MV Agusta | F4 750 | SECTION F - MV Agusta Club Russia

Suspension and wheels
F
SECTION
Revision 1
-1-
F
Suspension and wheels
SUMMARY
FRONT WHEEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 3
FRONT FORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 10
STEERING ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 23
REAR SUSPENSION AND FORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 31
REAR WHEEL HUB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 46
MOTORCYCLE SET-UP ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 58
WHEELS - CHECK AND BALANCING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE 62
F
-2-
Suspension and wheels
FRONT WHEEL
F
G
A
F
E
B
D
C
B
A
Torque
pressure
N·m
Kg·m
ft·lb
A
20 ÷ 22
B
C
D
E
40 ÷ 44
F
G
H
I
L
Operation
Description
FRONT WHEEL
Material
Dimensions
FRONT TYRE
Dimensions
Brand and type
Front tyre pressure
F4 750 ORO
F4 750 S
F4 750 S (1+1)
Magnesium alloy
3,50” x 17”
Aluminium alloy
3,50” x 17”
Aluminium alloy
3,50” x 17”
120/65-ZR 17
PIRELLI - Dragon Evo
MTR21 Corsa
METZELER - MEZ3 Racing
MICHELIN - Pilot Sport
DUNLOP - Sport Max D 207
Race Replica
120/65-ZR 17
PIRELLI - Dragon Evo
MTR21 Corsa
METZELER - MEZ3 Racing
MICHELIN - Pilot Sport
DUNLOP - Sport Max D 207
Race Replica
120/65-ZR 17
PIRELLI - Dragon Evo
MTR21 Corsa
METZELER - MEZ3 Racing
MICHELIN - Pilot Sport
DUNLOP - Sport Max D 207
Race Replica
PIRELLI-METZELER 2.5 bar (36 psi), MICHELIN 2.2 bar (32 psi), DUNLOP 2.3 bar (33 psi)
-3-
Suspension and wheels
Before proceeding with the removal and overhaul of
the components relative to the front suspension, it is
advisable to remove beforehand the front mudguard,
the under-engine fairing, the right and left fairing side
panels, the nose fairing, the air compartment conduits
and the relative side pieces as described in detail in
chapter C “Bodywork”.
Place the motorcycle on the rear stand.
Special tool: N. 800092642
FRONT WHEEL REMOVAL
F
Front brake caliper removal
Unscrew the two fixing screws of both front calipers
and remove the calipers.
Protect the disassembled calipers with protective material thereby avoiding possible
damage to the wheel rim.
Lift the motorcycle up at the front end.
Mount the special tool that is supplied with a pin on the
lower part of the steering base as shown in the figure.
Lift the motorcycle up.
Special tool No. 800095807 and
800095808
N.B.
No.
To facilitate the removal of the wheel it is
advisable to tape the brake tubing to the
special tool.
-4-
Suspension and wheels
Remove the screw on both front wheel/fork attachments.
During this operation, it is necessary to support the wheel.
Front wheel bearing check
With the wheel spindle still mounted to the wheel,
rotate the wheel to check that the bearings are not pitted and rotate with a smooth action. Check also for
axial (A) and/or radial (B) movement. If either condition
is verified, substitute the bearings.
F
B
A
Front wheel bearing substitution
Remove the wheel spindle utilising the special tool as
shown in the figure.
Special tool No. 800092872
-5-
Suspension and wheels
Utilise the special tool to extract the bearings. To
assemble the tool, it is necessary to remove the screw
(19 and extract the wheel spindle (2). Remove the nut
(3) and then the flange (4).
Before substituting the bearings as indicated
above it is advisable to remove the brake
discs as indicated in chapter H “Brakes” to
avoid damaging them.
Special tool No. 800092862
F
Introduce the extractor until the internal ring of the
bearing is hooked up. Introduce the wheel spindle and
screw and manually block them.
Mount the flange, spacer ring and nut utilising a 14 mm
spanner and a 27 mm spanner and extract the bearing
as shown in the figure.
N.B.
Operate in the same way on both bearings.
-6-
1
2
3
4
Suspension and wheels
Check that the ends of the aluminium spacer and the
seats of the bearings on the wheels are not scored or
marked.
Reassembly – front wheel bearings
Before proceeding with the reassembly, accurately
clean the bearing seats in the wheel hub.
Mount a bearing onto the special tool
Special tool No. 800092868
Introduce the stem of the tool into the wheel hub. Turn
the wheel upside down and insert the aluminium spacer.
-7-
F
Suspension and wheels
Assemble the other bearing and the guide.
F
Insert the guide spacer and utilising a press, squeeze
down the bearings.
Proceed as illustrated in the figure.
Attention: the wheel bearings should be
mounted with little interference but should
the action of the press be blocked in any way,
release the press.
Having completed the assembly, check that the aluminium spacer does not have axial play.
Assemble the wheel spindle and carry out again the
rolling check by rotating the wheel.
-8-
Suspension and wheels
Wheel spindle check
Place the wheel spindle on two v-prisms on a flat surface.
Utilising a dial gauge, check that the
eccentricity in the central part does not
exceed 0.05 mm.
Wheel assembly
F
If the front tyre is substituted, before assembling the wheel it is necessary to balance the
wheel following the indications in page 62.
After having carried out the check on the parts of the
front wheel, accurately clean the wheel spindle and
assemble it from right to left. Tighten the screw ring of
the wheel spindle to the torque prescribed utilising the
special tool. Ensure that when the wheel is mounted
into place, the screw ring of the wheel spindle must be
on the left side of the motorcycle.
Torque pressure: 40 ÷ 44 N·m
40÷44 N•m
Special tool No. 800092872
Mount the wheel, complete with wheel spindle onto the
wheel attachments of the front forks.
Ensure that the attachments do not sit on
the external face of the hexagon.
Tighten the two screws to the torque pressure prescribed.
Mount the two brake calipers as described in chapter H
“Brakes”.
Torque pressure: 20 ÷ 22 N·m
During this phase it is necessary to support
the front wheel to avoid snagging the two
screws.
-9-
20÷22 N•m
Suspension and wheels
FRONT FORK
M
L
N
I
H
G
F
A
F
B
A
E
B
D
C
E
C
D
A
Torque
pressure
N·m
Kg·m
ft·lb
B
C
D
30 ÷ 40
E
F
G
30 ÷ 40
H
I
L
M
8 ÷ 9 16 ÷ 18 22 ÷ 24
N
8 ÷ 10
Operation
Description
FRONT SUSPENSION
Type
Ø stems (mm)
Telescopic movement (mm)
F4 750 ORO
F4 750 S
F4 750 S (1+1)
Hydraulic telescopic forks with the stems positioned upside down, equipped with a system
of external adjustment for extension, compression and spring preload
49
49
49
118
118
118
- 10 -
Suspension and wheels
FRONT FORK OVERHAUL
Remove the front wheel as described previously in this
chapter.
Remove the left clip-on handlebar by unscrewing the
screws shown in the figure. Protect the clip-on handlebar with protective material.
Utilise the same procedure for the right clip-on handlebar.
The protection of the clip-on handlebars is
necessary to stop scratching painted parts of
the motorcycle.
Stem removal
Slacken the screw (1) of the steering head and the
three screws (2) of the steering base.
During this phase, support the stem.
Slide out the stem, supporting it with both hands and
operating with caution so as not to drop it.
Proceed with the same operation for both stems.
1
F
2
Fork tube overhaul
Remove the spring clip (1) of the spring preload
adjuster.
1
- 11 -
Suspension and wheels
Slacken the preload spring adjuster (2) until the nut
comes level with the central part of the cap, as indicated in the figure.
In this position there are seven marks showing on the
preload spring adjuster (see figure).
2
Slacken the fork cap.
F
Completely unscrew the cap and lower the stem into
the position shown in the figure.
This operation must be carried out keeping the stem in
a vertical position.
- 12 -
Suspension and wheels
Mount the special tool on the upper holes of the springpush spacer as shown in the figure.
Lower the spacer (3) and insert the thin plate between
spacer and the locknut (4).
4
Special tool No. 800094919
3
Utilising two spanners slacken the locknut and
unscrew the cap of the pump rod.
Press again on the special tool and remove the thin
plate.
Remove the spring-push spacer and the spring.
Turn the stem upside down and completely pour out
the oil into a suitable container.
F
Special tool No. 800094919
Recover the oil in an appropriate container.
Do not dispose of the used oil in the environment.
Pump the rod a few times to facilitate the removal of all
the oil.
Remove the internal rod (5), the lower pin and the
spring.
5
- 13 -
Suspension and wheels
Unscrew the lower central screw (6) that fixes the
pump unit.
Be careful to collect the seal washer underneath.
6
Extract the pump unit (7) and the lower cap (8).
F
8
7
Lower the anti-dust seal (9).
Remove the retaining ring (10) with a screwdriver, taking care to not scratch the stem.
9
10
- 14 -
Suspension and wheels
Extract the sleeve from the stem by repeated blows at
the end.
Disassemble the hydraulic braking adjuster (11) under
compression.
F
11
Fork assembly check
Check that the sleeve does not have marks on the
external part that could have repercussions inside the
assembly. Ensure that the inside is completely smooth,
without any scratches.
If necessary, substitute with a new part.
- 15 -
Suspension and wheels
Check for marks or scratches on all surfaces of the
stem and check the condition of the chroming.
Check the length of the spring (240 mm minimum).
Manually widen the upper bush and extract it.
Remove the lower bush, the washer, the oil seal, the
stop ring and the anti-dust seal (see figure).
F
Assembly oil seal and anti-dust seal
After having carefully checked all components, substitute those damaged and/or deteriorated.
Grease the lips of the new anti-dust seal and the new
oil seal with the appropriate grease.
Apply a "sleeve" of nylon to the upper part of the stem
(see figure), to protect the oil seal and the anti-dust
seal from any sharp edges on the lips of the stem during assembly.
Recommended grease: MOLYKOTE 55 M
Visually check for scratches and marks on the pump
rod and check that it slides smoothly inside the pump
unit without chamfering.
Substitute if necessary.
- 16 -
Suspension and wheels
Assemble the stem into the sleeve, placing the ferrules
into their seats with the respective washers. Utilise the
special tool
Using the same technique, assemble the oil seal and
its stop ring and then manually assemble the anti-dust
seal.
Special tool No. 800094918
Assemble the pump unit complete with cap inside the
stem.
The pump unit must be aligned with the hole of the
stem and carefully pushed into its seat.
Insert the lower screw, mounting a new seal washer
and tighten the screw to the prescribed torque pressure.
F
Torque pressure: 30 ÷ 40 N·m
30÷40 N•m
Reassemble the hydraulic brake adjuster under compression into its seat by utilising a new O-ring seal.
- 17 -
Suspension and wheels
Insert the lower pin (1) complete with spring, into the
pump rod and then slide in the internal rod (2).
2
1
Recommended suspension oil: SHOWA SS08
Check that the oil level is at 105 mm from the upper
edge of the sleeve including the upper edge as well.
105
F
Maintain the sleeve in a vertical position. Introduce 648
cc of suspension oil (SHOWA SS08).
Press the pump rod up and down (see figure) until a
perfect fluidity of movement is obtained.
- 18 -
Suspension and wheels
Manually screw in the locknut until it reaches the end
of the thread. Introduce the spring.
Mount the aluminium spacer (3), utilising the appropriate special tool and then press down the spring and
insert the thin plate (4).
Reassemble the complete cap with a new O-ring.
Tighten the complete cap of the locknut to the prescribed torque pressure.
30÷40 N•m
4
Special tool No. 800094919
Torque pressure: 30 ÷ 40 N·m
3
Reassemble the cap (5) on the stem, tightening it to the
prescribed torque pressure.
5
Torque pressure: 40 ÷ 50 N·m
40÷50 N•m
- 19 -
F
Suspension and wheels
Adjust the spring preload to the fifth mark by regulating
the adjuster (6).
Insert the retaining ring (7).
7
6
F
Left stem assembly
Reassemble the stem taking care to pass the electrical
wiring and the clutch tube inside the stem (between the
stem and the steering head).
Lift up the stem until the third mark is in line with upper
surface of the steering arm on the inside (see figure).
Screw in and tighten the three screws at the base of
the steering.
Carry out this assembly correctly. A casual or
inexact assembly could compromise the stability and steering of the motorcycle.
Right stem assembly
Reassemble the stem taking care to pass the electrical
wiring and the accelerator controls inside the stem
(between the stem and the steering head). Leave the
brake tubing on the outside of the stem (see figure).
Lift up the stem until the third mark is in line with upper
surface of the steering arm on the inside (see figure).
Carry out this assembly correctly. A casual or
inexact assembly could compromise the stability and steering of the motorcycle.
- 20 -
Suspension and wheels
Tighten the three screws (1) at the base of the steering. Effectuate the operation several times until the
torque wrench does not turn the screw any more.
This operation must be carried for both stems.
8÷9 N•m
Torque pressure: 8 ÷ 9 N·m
1
Ensure that the steering head is sitting perfectly in its
seat.
Tighten the two screws (2) of the steering head/stems
to the prescribed torque pressure and successively
tighten the central screw (3).
Torque pressure steering head (2):
16 ÷ 18 N·m
Torque pressure central screw (3):
22 ÷ 24 N·m
22÷24 N•m
16÷18 N•m
3
This check is necessary for the correct
positioning of the stems even if the steering
head has not been removed. This check
guarantees the standard set-up of the
motorcycle.
2
Assembly clip-on handlebars
Position the electrical wiring as shown in the figure.
Ensure that the Seeger retaining ring (1) of the clamp
pin is in good condition and in position.
1
- 21 -
F
Suspension and wheels
Assemble the clip-on handlebar slotting the clamp pin
into position on the steering head (see figure).
F
Tighten the screws (1) to the prescribed torque pressure.
After having carried out the assembly of the right clipon handlebar, check that the accelerator handgrip
rotates freely and smoothly.
Torque pressure: 8 ÷ 10 N·m
8÷10 N•m
Front suspension adjustment
After having correctly reassembled the entire fork
assembly, it is necessary to re-establish the adjustments shown in the table to guarantee the best set-up
of the motorcycle.
Carry out the same identical adjustments on
both stems of the fork.
Type of set-up
Soft
Standard
Hard
Spring preload
6 marks 5 marks 4 marks
Braking in extension
7 clicks 5 clicks 3 clicks
Braking under compression 7 clicks 5 clicks 3 clicks
- 22 -
Spring preload
Rebound damper
Compression damper
Suspension and wheels
STEERING ASSEMBLY
I
F
E
H
G
D
A
C
B
F
D
Torque
pressure
N·m
Kg·m
ft·lb
A
95 ÷ 100
B
C
18 ÷ 20
D
E
8 ÷ 10
270
Operation
- 23 -
F
8 ÷ 10
G
5÷7
243
H
8 ÷ 10
270
I
8 ÷ 10
L
Suspension and wheels
STEERING ASSEMBLY OVERHAUL
Steering head removal
After having previously removed the two stems of the
fork assembly as previously described, remove the two
fixing screws (1) of the steering shock absorber to the
frame and successively the screw (2) that fixes the
steering head to the steering pin.
2
1
F
Extract the steering base complete with shock
absorber.
Steering base removal
Utilising the special tool, slacken the screw ring of the
steering pin.
Support the motorcycle sufficiently enough so that the
front stand can be removed. Ensure that the brake pincers are securely placed.
Special tool No. 800091645
- 24 -
Suspension and wheels
Remove the screw ring previously slackened and
remove the steering base complete with the pin.
Remove the anti-dust seal, the internal bearing ring
and the ball bearing ring.
Disassembly of the frame head steering sleeve
Utilising the special tool, remove the steering screw
ring
Special tool No. 800092857
Attention! During this operation press the
centre of the tool with the palm of the hand
and at the same time supporting the motorcycle.
Remove the adjustment screw of the frame head steering sleeve, sustaining the frame head steering sleeve
at the lower part.
- 25 -
F
Suspension and wheels
Reassembly of the frame head steering sleeve
Clean the parts accurately so that a visual check can
be made of the tube and the seats.
There should not be marks or lines in the bearing
seats. If so, substitute the parts as necessary.
F
Lightly grease the contact area of the frame head
steering sleeve (see figure) and the threaded part with
Agip Grease 30.
Accurately clean the bearing seats on the frame head
steering sleeve.
Recommended grease Agip Grease 30
Reassemble the frame head steering sleeve aligning
the slot on the frame head steering sleeve with the
threaded hole on the frame head (see figure).
When the slot is in correspondence with the threaded
hole of the frame head screw in the grub screw (1),
without tightening. Just enough to keep the steering
head in its seat.
The tightening of the grub screw (1) at this
stage would compromise the set-up of the
steering head in its frame seat.
1
- 26 -
Suspension and wheels
Screw ring assembly
After having accurately cleaned the screw ring and the
seats of the steering head on the frame, grease the
screw ring and screw it in manually onto the relative
seat.
Recommended grease Agip Grease 30
Utilising the special tool, tighten the screw ring (1) to
the prescribed torque pressure.
95÷100 N•m
Special tool No. 800092857
Torque pressure: 95 ÷ 100 N·m
During this tightening operation, press down with force
onto the head of the special tool.
1
Tighten the grub screw of the steering head.
Torque pressure: 18 ÷ 20 N·m
Assembly steering base
Accurately clean all the parts and check the general
condition.
Before reassembly, grease the ball bearing ring and
place it onto the steering pin.
Recommended grease: Agip Grease 30
- 27 -
F
Suspension and wheels
Assemble the steering base to the frame.
Assemble the upper ball bearing ring already greased.
Assemble the internal ring of the bearing, the anti-dust
seal and the upper screw ring.
F
Steering pin tightening
Screw down, without tightening, the screw ring of the
steering pin.
This operation must be done manually.
Ensure that the steering base is turned as far as possible to the right.
Utilising the special tool, tighten the screw ring (1) by
rotating it 10° (see figure, calculable as one-third distance between the two holes of the steering head
screw ring (2).
10°
2
Special tool No. 800091645
1
Removal steering shock absorber connecting rod
Remove the screw (1) that connects the connecting
rod to the steering shock absorber.
Remove the two screws (2) of the steering lock block.
Remove the locknut of the screw (3) that connects the
connecting rod to the steering head.
Check that the connecting rod is in good condition and
that play is not present on the two bearings.
If play is found, substitute the worn parts with new
ones.
- 28 -
1
3
2
Suspension and wheels
Reassembly connecting rod
Apply Loctite 270 on the screw (1) that fixes the connecting rod to the steering head. Tighten the screw (1)
to the prescribed torque pressure.
Torque pressure: 8 ÷ 10 N·m
1
8÷10 N•m
Apply Loctite medium 243 thread locking fluid on the
two screws (2) of the steering lock block.
Tighten the two screws on the steering head to the prescribed torque pressure.
5÷7 N•m
Torque pressure: 5 ÷ 7 N·m
2
Assemble the shock absorber to the steering head.
Utilise Loctite strong 270 thread-locking fluid to the
screw (3).
Tighten the screw to the prescribed torque pressure.
8÷10 N•m
Torque pressure: 8 ÷ 10 N·m
3
- 29 -
F
Suspension and wheels
Assembly steering head
Position the steering head in its seat.
Fix the two fixings (1) of the steering shock absorber.
Reposition the fork stems as described previously in
this chapter.
Torque pressure: 8 ÷ 10 N·m
Check the exact position of the fork stems.
F
- 30 -
8÷10 N•m
1
Suspension and wheels
REAR SUSPENSION AND FORK
E
B
F
D
C
C
A
Torque
pressure
N·m
Kg·m
ft·lb
Operation
Description
REAR SUSPENSION
Type
Mono-arm fork
Wheel travel (mm)
A
40 ÷ 44
B
40 ÷ 44
C
40 ÷ 44
D
50 ÷ 55
E
70 ÷ 75
F
G
H
I
L
243
F4 750 ORO
F4 750 S
F4 750 S (1+1)
Progressive with mono-arm fork and mono-shock absorber
adjustable for extension, compression and spring preload
Magnesium alloy
Aluminium alloy
Aluminium alloy
120
120
120
During the disassembly and check of the rear suspension assembly, it is advisable to disassemble the underengine fairing, fairing side panels, tail unit and fuel tank as described in chapter C "Bodywork".
- 31 -
Suspension and wheels
Disassembly rear shock absorber
Remove the tail unit as described in chapter C
"Bodywork".
Remove the fuel tank as described in chapter B
"Maintenance".
1
Lift up the rear part of the motorcycle (utilising a lift and
safety straps) high enough to take the load off the
shock absorber.
Slacken the upper screw of the shock absorber (1).
F
Slacken the central screw (2) of the rear wheel compensator assembly.
2
Slacken the lower screw of the shock absorber (3).
3
- 32 -
Suspension and wheels
Raise up or lower the motorcycle utilising the lift so that
the previously slackened screws are freed.
Remove the pin (4) of the compensator assembly (5).
Remove the upper screw of the shock absorber. (6).
5
6
4
Slacken the central fixing pin of the engine (7).
Slacken the rear fork pin (8).
These operations are necessary to free the compensator assembly.
Lift up the compensator assembly.
Remove the upper screw of the shock absorber that
was previously slackened.
Extract the rear shock absorber.
F
8
7
Rear shock absorber test
Check that the lower and upper bolt holes do not have
axial (A) and radial (B) play.
B
A
- 33 -
Suspension and wheels
Check the length of the rear shock absorber spring.
Standard spring adjustment (A):
154 mm
F4 ORO / F4 S (to frame registration number 004145):
F4 S 1+1 / F4 S (from frame registration number 004146): 152 mm
Check the functioning of the adjusters.
The shock absorber contains high-pressure
gas. Do not touch the valve of the shock
absorber tank. Do not try to disassemble the
shock absorber.
A
Adjustments in extension and under compression of
the rear shock absorber:
F
Type of set-up
Soft
Standard
Hard
Braking in extension
18 clicks 16 clicks 14 clicks
Braking under compression 16 clicks 14 clicks 12 clicks
F4 ORO / F4 S
(up to
frame reg. No. 004145)
Type of
frame reg. No. 004146)
Soft
Freno in estensione
20 clicks
Braking under compression 22 clicks
F4 S1+1 / F4 S
(after
set-up (only rider)
Standard
Hard
18 clicks 12 clicks
20 clicks 15 clicks
Type of set-up (with passenger)
Soft
Standard
Hard
Braking in extension
14 clicks 12 clicks 9 clicks
Braking under compression 17 clicks 15 clicks 12 clicks
F4 S1+1
N.B.
Rebound damper
Compression damper
This operation must be carried out with
the shock absorber assembled to the
motorcycle.
Compensator assembly removal
Remove the special screw (1) that fixes the compensator assembly of the rear suspension to the monoarm fork.
Extract the complete compensator assembly.
1
- 34 -
Suspension and wheels
Compensator assembly overhaul
Remove the anti-dust seal (1).
Check the condition of the roller bearings and if it is
necessary to substitute them, utilise an extractor as
shown in the figure.
1
Check for eventual axial play of the bolt holes of the
connecting rod (2).
Substitute if worn.
F
2
Rear shock absorber support plate removal
Remove the three screw (1) indicated in the figure and
remove the support plate (2).
1
2
- 35 -
Suspension and wheels
When reassembling, it is necessary to apply Loctite
242 to the three screws and lightly screw them in.
Tighten the central screw first and then the other two to
the prescribed torque pressure.
Special product: Loctite 242
Torque pressure: 40 ÷ 44 N·m
40÷44 N•m
F
Upper chain guide removal
Remove the two screws (1) and the relative plates.
Lift up the front part of the chain guide to remove it
from the mono-arm fork (see figure).
1
Repeat the operation on the rear part, where the screw
seat is situated in the mono-arm fork.
- 36 -
Suspension and wheels
Slide out in a forward position as shown in the figure.
When reassembling, proceed in the reverse order of
removal ensuring the correct positioning of the front
reference peg.
Reassembly compensator assembly
Reassemble the compensator assembly after having
cleaned and greased the seat of the special screw situated on the mono-arm fork.
Screw in the screw without tightening it.
Recommended grease : Agip Grease 30
Assembly rear shock absorber
Accurately clean all parts. Grease the screws with Agip
Grease 30 before reassembly.
Insert the shock absorber from above and lightly screw
in the lower screw of the shock absorber.
Centralise the compensator assembly and replace the
pin. Screw on the nut of the pin without tightening it.
Insert the shock absorber into the compensator
assembly and lightly screw in the screw.
Lower the motorcycle to the ground, remove
the lift and safety straps.
This operation is necessary to recover the
play between the shock absorber/compensator assembly/mono-arm fork.
Recommended grease: Agip Grease 30
- 37 -
F
Suspension and wheels
Tighten up the whole assembly:
Tighten the screws of the connecting rod
Tighten the lower and upper screw of the shock
absorber.
Tighten the screw of the compensator assembly (1).
Tighten the frame pin (2).
Tighten the mono-arm fork pin (3).
Apply Agip Grease 30 only to the threads of
the screws.
Connecting rod torque pressure: 40 ÷ 44 N·m
Shock absorber torque pressure: 40 ÷ 44 N·m
Compensator assembly
torque pressure:
50 ÷ 55 N·m
Frame pin torque pressure:
55 ÷ 60 N·m
Mono-arm fork torque pressure: 70 ÷ 75 N·m
50÷55 N•m
1
2
3
Recommended grease: Agip Grease 30
F
MONO-ARM FORK REMOVAL AND OVERHAUL
55÷60 N•m
70÷75 N•m
1
Remove the rear shock absorber and connecting rod.
Rear wheel removal
Remove the safety spring clip (1) and unscrew the
screw ring of the wheel.
Attention! The screw ring has a left-handed
thread.
Footrest removal
Unscrew the two screws (1) of both footrest supports
and remove them.
1
1
- 38 -
Suspension and wheels
SILENCERS
REMOVAL
AND
EXHAUST
GROUP
Right passenger footrest removal
It is necessary to remove the right passenger footrest
on all rider + passenger motorcycles to carry out the
removal of the silencers and the exhaust group.
Remove the right passenger footrest by unscrewing
the two relative screws.
Lower chain guard removal
Remove the two socket head screws (1) of the lower
chain guard.
F
1
Anti-heat protection removal
Remove the two screws (1) that fix the protection onto
the exhaust group.
1
- 39 -
Suspension and wheels
Removal silencers
Unhook the two connecting springs between the
silencers and the exhaust group.
Unhook the two connecting springs between the primary exhaust tubes and the exhaust group.
This operation must be carried out utilising
and adequate tool to avoid the spring from
bouncing dangerously.
F
Remove the lower connecting plate of the exhausts by
unscrewing the two screws (1).
1
Remove the two lateral screws (see figure) that fix the
exhausts and remove the two silencers.
- 40 -
Suspension and wheels
Exhaust group removal
Remove the two screws (1) as shown in the figure and
remove the exhaust group (2).
1
2
1
Lower chain guide removal
Remove the three screws of the chain guide.
Remove the chain guide (1) complete with the two rear
brake tube guide plates.
F
1
Upper chain guard removal
Remove the screw complete with ferrule.
Extract the chain guard by pulling it out from the back
part of the wheel (see figure) so that it is freed from its
position on the mono-arm fork.
- 41 -
Suspension and wheels
Chain removal
Remove the chain utilising the special tool.
Special tool no. 800095389.
Identify the connecting link.
N.B.
A
The tool has two functions:
• As a chain cutter: with a punch mounted aligned at A.
• As an anvil: with a raised punch
aligned at B.
F
B
Pre-assemble the tool as shown in the figure.
Align a pin with the central hole of the tool.
Mount the tool onto the chain as shown in the figure
and align the punch on «A».
Operate as shown in the figure.
A
B
- 42 -
Suspension and wheels
To reassemble the chain, operate in the reverse order
of removal, mounting the tool with the punch as shown
in the figure, aligned with «A».
Utilise only new links.
Mono-arm fork pin removal
Remove the screw (1) on the right side of the motorcycle.
Remove the washer and push out the pin manually.
Support the mono-arm fork so that it does not drop to
the ground.
F
1
Bearings overhaul
If it is necessary to substitute the bearings of the monoarm because of excessive play, operate as follows:
Remove the right and left spacer.
Remove the Seeger retaining ring on the right side of
the mono-arm.
Remove the anti-dust seal on the left side.
Utilising the special tool, remove the two roller bearing
units.
Special tool no. 800092860 LEFT SIDE
Mount the tool so that both roller bearings are
removed.
- 43 -
Suspension and wheels
Utilising the special tool press on both ball bearings
and extract them.
Operate in the same way for the bearings on the left
side.
Special tool no. 800092860 RIGHT SIDE
Extract the spacer from the right side.
F
Check the condition of both bearing seats and the seat
of the spacer.
If the spacer is in good condition, reinsert it onto the
fork from the right side.
Assembly of the roller bearings and the roller bearing units
Pre-assemble the two roller bearing units on the left
side and the two ball bearings on the right hand side
utilising the special tool (no. 800092866) as shown in
the figure. Use new parts.
Special tool no. 800092866
- 44 -
Suspension and wheels
Utilising a press fit the bearings and the roller bearing
units (see figure).
F
- 45 -
Suspension and wheels
REAR WHEEL HUB
L
H
I
C
F
D
G
E
B
A
F
A
Torque
pressure
N·m
Kg·m
ft·lb
Operation
Description
REAR WHEEL
Material
Dimensions
REAR TYRE
Dimensions
Brand and type
Rear tyre
pressure
B
30 ÷ 35
C
20 ÷ 22
D
45 ÷ 50
E
200÷220
F
28÷32
G
220 ÷ 240
270
270
H
100
I
25
L
8
270
F4 750 ORO
F4 750 S
F4 750 S (1+1)
Magnesium alloy
Standard
Optional
6,00” x 17”
5,75” x 17”
Aluminium alloy
Aluminium alloy
6,00” x 17”
6,00” x 17”
190/50-ZR 17 or 180/55-ZR 17 190/50-ZR 17 or 180/55-ZR 17 190/50-ZR 17 or 180/55-ZR 17
PIRELLI - Dragon Evo
PIRELLI - Dragon Evo
PIRELLI - Dragon Evo
MTR22 Corsa
MTR22 Corsa
MTR22 Corsa
METZELER - MEZ3 Racing METZELER - MEZ3 Racing METZELER - MEZ3 Racing
MICHELIN - Pilot Sport
MICHELIN - Pilot Sport
MICHELIN - Pilot Sport
DUNLOP - Sport Max D 207 DUNLOP - Sport Max D 207 DUNLOP - Sport Max D 207
Race Replica
Race Replica
Race Replica
PIRELLI-METZELER 2.3 bar (33 psi), MICHELIN 2.4 bar (35 psi), DUNLOP 2.3 bar (33 psi)
- 46 -
Suspension and wheels
Before checking and overhauling the rear wheel hub
assembly it is necessary to carry out the following preliminary operations:
Place the motorcycle on the rear stand.
Special tool no. 800092642
Remove the rear wheel by removing the polygonal nut.
Utilise the following tools:
• Torque wrench
• 55 mm polygonal spanner
The polygonal fixing nut of the rear wheel
has a left hand thread. To effectuate the
removal it is therefore necessary to turn the
torque wrench in a clockwise direction as
shown in the figure.
After having effectuated the rear wheel removal, support the motorcycle with a lift as shown in the figure.
Remove the rear stand.
Remove the safety ring of the crown flange-fixing nut.
- 47 -
F
Suspension and wheels
Slacken the nut of the flange by rotating it in an anticlockwise direction as shown in the figure. Utilise the
following tools:
• Torque wrench
• 55 mm polygonal spanner
Remove the brake caliper (see chapter H "Brakes").
Slacken the fixings (1) of the wheel hub.
F
1
With the special spanner mounted on the extension
tube, pull forward the eccentric adjuster and release
the chain from the crown wheel.
Special tool:
Eccentric adjuster spanner
Spanner extension
no. 800092854
no. 800092855
- 48 -
Suspension and wheels
Crown wheel assembly removal
Remove the retaining ring (1).
Remove the wheel spindle nut (2) previously slackened. Remove the crown wheel assembly (3) and the
spacer ring (4) underneath.
3
4
Wheel spindle removal
Remove the wheel spindle complete with the brake
disc, extracting it from the right side of the motorcycle
as shown in the figure.
F
Pincer carrier flange removal
Remove the Seeger retaining ring (1), the spacer ring
(2), the flange (3) and the spacer ring underneath.
1
3
2
- 49 -
Suspension and wheels
Wheel hub disassembly
Extract the wheel hub from the left side of the fork.
Carefully wash all parts.
Check the condition of the roller bearing and the ball
bearing
If there is excessive play, even in only one of the bearings, substitute the wheel hub, complete with bearings
with a new unit.
If only one bearing is worn, substitute the
complete unit. Never substitute one bearing
only.
F
For normal maintenance, remove the two internal
spacers (wheel spindle seat), wash the roller bearing
units, dry them and grease them.
Check the condition of the ball bearings.
Recommended grease:
– Agip GR MU3 (F4 ORO)
– Molykote BR2 PLUS (F4 S - S 1+1)
Caliper holder pin
N.B. Unscrew the caliper holder pin only if it is damaged.
When reassembling, apply Loctite 242 as prescribed
and tighten to the correct torque pressure.
Recommended thread-locking fluid: Loctite
242
Torque pressure: 30 ÷ 35 N·m
- 50 -
30÷35 N•m
Suspension and wheels
Wheel spindle unit check
Check the condition of the wheel drive engagement
splines.
If it is worn, substitute as follows.
After having heated them, remove the four brake disc
carrier flange fixing screws (1) mounted with Loctite
270.
Remove the flange.
F
1
Recommended thread-locking fluid: Loctite
270
1
Check the extra-smooth parts of the wheel spindle for
wear (2).
2
2
- 51 -
Suspension and wheels
Utilising a press with an adequate punch for both the
removal and assembly of the pins of the wheel drive
engagement.
When assembling, apply force on the crown of the peg
not on the point. (see figure).
Assemble the brake disc carrier plate by tightening the
screws to the prescribed torque pressure and then
apply Loctite 270.
Recommended thread-locking fluid: Loctite 270
Torque pressure: 20 ÷ 22 N·m
20÷22 N•m
F
Check
Evaluate the wear condition of the crown wheel. If it is
badly worn, effectuate a substitution with a new part.
Slacken the five Silentblock and if necessary substitute
them.
When reassembling, grease the area that comes into
contact between the flange and the crown.
Do not apply grease to the threads of the
pins.
Tighten the five nuts to the prescribed torque as shown
in the figure.
Torque pressure: 45 ÷ 50 N.m.
- 52 -
Suspension and wheels
Reassembly wheel hub
Lightly grease the wheel hub.
Introduce the hub to the fork from the left side of the
motorcycle and push it in.
Screw in the two screws without tightening.
Recommended grease: Agip Grease 30
Assemble the brake caliper-carrying flange.
Grease the O-rings and insert them into their respective seats on the flange.
Assemble the rear spacer ring, then the brake calipercarrying flange, the second spacer ring and the Seeger
retaining ring (1).
It is important to ensure that the Seeger retaining ring
is inserted around the whole circumference of the seat.
F
1
Introduce the first spacer.
Grease and insert the roller bearing unit.
Assemble the second spacer.
Recommended grease: Agip GR SM
(If the recommended grease cannot be
found, it is possible to use a product having
the following characteristics:
- Lithium grease and molybdenum disulphide
- NLGI consistency: 2
- Dropping point: ASTM: 190°C
- Base oil viscosity at 40°C: 160 cSt)
- 53 -
Suspension and wheels
Reassembly rear wheel pin
Grease the wheel pin and introduce it carefully into the
hub.
F
Insert the spacer ring illustrated in the figure onto the
wheel pin.
Insert the crown wheel assembly, the second spacer
ring and the wheel pin fixing nut.
Tighten the nut to the prescribed torque.
Torque pressure: 200 ÷ 220 N·m
Assemble the retaining ring.
200÷220 N•m
Chain assembly
Utilising the special tool, screw the eccentric adjuster
forward so that the chain can be inserted.
Mount the chain onto the crown wheel and adjust the
eccentric adjuster until the chain is taught but not tight
(see the information printed on the chain adjustment
nameplate).
- 54 -
Suspension and wheels
Tighten the hub screws to the prescribed torque pressure. Do not go past this limit.
28÷32 N•m
WARNING
Exceeding the prescribed tightening torque
may seriously damage the rear wheel hub
and endanger the driver’s safety.
Torque pressure: 28 ÷ 32 N·m
Wheel assembly
F
In the case of substitution of the rear tyre it
will be necessary to effectuate the balancing
of the wheel before assembling it. Follow the
instructions indicated in page 62.
Insert 1st gear.
Reassemble the rear wheel.
Tighten the wheel axis nut to the prescribed torque
pressure.
Torque pressure: 220 ÷ 240 N·m
Insert the retaining ring.
220÷240 N•m
Pinion wheel removal
Remove the two rubber bands and disconnect the
speed sensor connector (1).
1
- 55 -
Suspension and wheels
Remove the screw (1) of the clutch control cylinder and
the three screws (2) of the pinion wheel cover.
2
1
F
Remove the cover being careful to not extract the
clutch control rod (it must remain inserted in the
engine) and be careful to not lose the two centralising
bushes indicated in the figure.
Straighten the metal tongue with a flat-head drift and
hammer.
Unscrew the pinion wheel retaining nut.
Be careful to not hit the timing wheel situated
on the extremity of the pinion shaft during
this operation.
- 56 -
Suspension and wheels
Slacken the chain (see page 48), bring it forward and
slide it off the pinion wheel.
Effectuate this operation only if the pinion wheel has to
be substituted.
If the pinion wheel and crown wheel assembly have to
be substituted, it is advisable to operate by cutting the
chain (see page 42) to facilitate the operation.
For reassembly, insert the pinion wheel with the chain
already attached.
Take a new washer, assemble it with the nut and tighten to the prescribed torque pressure utilising Loctite
thread-locking fluid.
Hammer the new washer down onto the two opposite
faces of the hexagon.
F
Torque pressure: 100 N·m
Recommended thread-locking fluid: Loctite 270
100 N•m
Reassemble the pinion wheel cover after having
cleaned the support base.
Screw in the four screws lightly and proceed with the
tightening, screwing down respectively on the three
screws M8 (1) and on the screw M6 (2).
Replace the rubber bands and reinsert the electrical
connector.
1
Torque pressure (M8 screws): 25 N·m
Torque pressure (M6 screw): 8 N·m
2
8 N•m
- 57 -
25 N•m
Suspension and wheels
MOTORCYCLE SET-UP ADJUSTMENT
Place the motorcycle on the rear stand.
Special tool no. 800092642
Insert the setting-up arm (1) of the rear suspension
(special tool) in its appropriate seats as shown in the
figure.
Special tool no. 800093347
1
F
Press down on the seat so that the shock absorber is
compressed and then let it go back into its resting position.
Measure the distance X1 between the upper extremity
of the rear stand tube and the point on the setting-up
arm indicated by the arrow in the figure.
X1
- 58 -
Suspension and wheels
Raise the rear part of the motorcycle until the full
extension of the rear shock absorber is reached.
Contemporaneously measure the distance X2 between
the upper extremity of the rear stand and the point on
the setting-up arm shown in the figure.
N.B.
Two persons must carry out this operation.
X2
Calculate the static slack ∆ according to this formula:
∆ = X2 – X1
The value of the static slack should be equal to:
∆ = 22 mm
If the static slack value is different from the indicated
value, it is necessary to effectuate the following adjustment to the shock absorber spring.
F
Slacken the upper lock ring of the rear shock absorber,
rotating it in the direction indicated in the figure by utilising a 75 mm key spanner.
Rotate the lower lock ring as shown in the figure, either
in a clockwise or anti-clockwise direction, according to
the static slack ∆ value calculated.
∆ < 22 mm: Rotate in an anti-clockwise direction
∆ > 22 mm: Rotate in a clock-wise direction
∆ < 22 mm
- 59 -
∆ > 22 mm
Suspension and wheels
At the end of the spring adjustment operation, tighten
the upper lock ring as shown in the figure. Re-measure
the distance X1 and X2 and check that the static slack
r coincides with the correct value. If not, repeat the
spring adjustment operation until the correct measurement is reached.
F
After making the rear shock absorber adjustment, it is
necessary to determine the value of the static set-up
quota X.
Press down on the seat so that the rear shock
absorber is compressed, after which allow the motorcycle to return to its rest position.
Measure the distance X between the upper extremity
of the rear stand and the point of the set-up arm indicated in the figure.
This distance represents the static set-up quota of the
motorcycle. It should be equal to the following value:
X
X = 190 mm
If the quota differs from the indicated value, it is necessary to carry out the following adjustment operation
on the connecting rod of the rear suspension.
- 60 -
Suspension and wheels
Slacken the fixing screws (2) of the semi-connecting
rods of the rear suspension.
2
Utilising a hexagonal spanner, vary the inter-axis
between the two semi-connecting rods by adjusting the
adjustment screw (3). Contemporaneously, measure
on the set-up rod the consequent variation of the static set-up X.
Continue the operation until the quota is equal to 190
mm.
F
3
Tighten the fixing screws of the semi-connecting rods
to the prescribed torque pressure.
Torque pressure: 8÷10 N•m
After having completed the adjustment of the motorcycle set-up, it is necessary to adjust the tension of the
chain.
Check also the orientation of the front headlight and if
necessary effectuate the necessary adjustments. Both
these operations are described in chapter B
“Maintenance”.
8÷10 N•m
- 61 -
Suspension and wheels
WHEEL BALANCE CHECK
If the tyres are substituted, it is necessary to effectuate
the following operations balancing and checking the
wheels.
Front wheel balancing
Mount the wheel onto an adequate support similar to
that shown in the figure, utilising a ground pin of 35 mm
diameter. Check the wheel utilising a micrometer
gauge and check the following tolerances:
Ovalization and maximum eccentricity must
not exceed 0.5 mm.
Flatness must not exceed 0.5 mm.
F
When effectuating balancing on certain
makes of tyres, it is necessary to refer to the
yellow mark (1) present on the side of the tyre
as shown in the figure. It indicates the lightest
point of balancing and must be situated close
to the tyre valve when the tyre is mounted
onto the wheel rim.
1
Rear wheel balancing
Before mounting the rear wheel on the appropriate
tool, insert the balancing tool into the central hole of the
wheel.
Special tool no. 800092865
- 62 -
Suspension and wheels
Insert the polygonal nut of the balancing tool from the
opposite side and screw it onto the threaded part of the
tool so that the tool can be fixed to the wheel.
Mount the wheel onto an adequate support similar to
that shown in the figure, utilising a ground pin of 35 mm
diameter. Check the wheel utilising a micrometer
gauge and check the following tolerances:
Ovalization and maximum eccentricity must
not exceed 0,5 mm.
Place the micrometer gauge as shown in the figure and
check the flatness.
Flatness must not exceed: 0,5 mm.
- 63 -
F
Suspension and wheels
When effectuating balancing on certain
makes of tyres, it is necessary to refer to the
yellow mark (1) present on the side of the tyre
as shown in the figure. It indicates the lightest
point of balancing and must be situated close
to the tyre valve when the tyre is mounted
onto the wheel rim.
1
F
- 64 -
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