Rear Drive System

Rear Drive System
IM
A NO
HYP
ER
G
m
4 0 0 kg /c
CK
LO
AN
. PA
T 4268
25
9
Rear derailleur
H
J AP
SP40
S
A
The groove is wide
at one place only.
ac -14T
Outer casing
11T
ab
- C
In order to realize the best performance, we recommend that the
following combination be used.
The 6 sprockets are secured by
means of rivets.
Sprocket spacers
(1.0mm)
• To replace the
sprockets, use the
special tool (TL-HG16)
and TL-SR20 to remove
the lock ring.
Tool
(TL-SR20)
Lock ring
TL-HG16
U mark
Disassembly
SGS
Freehub
FH-MC18 / FH-R080
Gears
Turn the low adjustment screw
so that the guide pulley moves
to a position directly in line with
the largest sprocket.
Guide pulley
1
2
Lock ring
RD-MC18
Type
Largest sprocket
Tightening torque:
30 - 50 Nm {261 - 434 in. lbs.}
DE
L I
Before use, read these instructions carefully, and follow them for correct use.
ST-EF28-8
• For installation of the sprockets,
use the special tool (TL-HG16) to tighten
the lock ring.
For each sprocket, the
surface that has the group
mark should face outward
and be positioned so that
the triangle (U) mark on
each sprocket and the A
part (where the groove width
is wide) of the freewheel
body are aligned.
Rear Drive System
EZ-fire Plus
3. Low adjustment
Installation of the sprockets
.S
SI-R611A
U
SERVICE INSTRUCTIONS
Installation of the rear derailleur
Adjustment
4. How to use the B-tension
adjustment screw
Mount the chain on the smallest
chainring and the largest sprocket, and
turn the crank arm
backward. Then turn the
B-tension adjustment screw to adjust
the guide pulley as close to the
sprocket as possible but not so close
that it touches. Next, set the chain to
the smallest sprocket and repeat the
above to make sure that the pulley
does not touch the sprocket.
2
Low adjustment
screw
1
Largest
sprocket
Smallest
sprocket
2
2
1
1
2
B-tension
ajustment screw
1
8
Cassette sprocket
When installing, be careful that deformation is not caused by the B-tension
adjustment screw coming into contact with the dropout tab.
CS-HG50-8I
Chain
CN-IG51 / CN-IG31
Bottom bracket cable guide SM-SP17 / SM-BT17 / SM-SP18 / SM-BT18
Bracket spindle tightening torque:
8 - 10 Nm {70 - 86 in. lbs.}
5 mm Allen key
1. Top adjustment
Outer line of
smallest sprocket
Turn the top adjustment screw to
adjust so that the guide pulley is in
line with the outer line of the
smallest sprocket when looking
from the rear.
1
1
B-tension adjustment
screw
Specifications
2
2
Guide pulley
Top adjustment
screw
Rear Derailleur
Model number
8
39T
Largest sprocket
30T
Smallest sprocket
11T
Front chainwheel tooth difference
Dropout tab
Chain length
Add 2 links (with the chain on both the
largest sprocket and the largest chainring)
20T
Applicable front chainwheel
(chainring tooth configuration)
FC-MC18
(42T-32T-22T)
Largest sprocket
Set the indicator to position "8", and
then assemble so that the indicator
pins fit into the reel unit holes.
Cassette sprocket tooth combination
an
11, 13, 15, 17, 20, 23, 26, 30T
5
Checking the chain connection
For IG, chains, insert the chain gauge
(TL-CN24) into the inner link which is next
to the chain connecting pin to check that
the inner link width is correct.
Check that the connecting pin pro-trudes
past the outer link by the same amount on
both sides, and that the amount of
protrusion is 0.2 mm or more.
Freehub
FH-MC18 / FH-R080
8
No. of spoke holes
36 / 32
6 7 8
Indicator fixing screws
SH
IM
Outer link
Lever (B)
Tightening torque:
0.3 - 0.5 Nm {3 - 4 in. lbs.}
Correct
Connect the cable to the rear derailleur and, after taking up the initial slack in
the cable, re-secure to the front derailleur as shown in the illustration.
Note: Be sure to secure the inner
cable as shown in the
illustration below.
Incorrect
Tightening torque:
35 - 50 Nm {305 - 434 in. lbs.}
Note:
Do not attempt to disassemble the
freewheel body, because it may result
in a malfunction.
Special grease is used inside the
freewheel body.
Do not lubricate the freewheel body
with ordinary grease or oil, as this may
cause problems with the operation of
the clutch mechanism.
Tightening torque:
150 Nm {1300 in. lbs.}
Tightening torque:
6 - 8 Nm {53 - 69 in. lbs.}
Inner cable
Pull
Replacement of the freewheel body
After removing the hub axle, remove
the freewheel body fixing bolt
(inside the freewheel body), and
then replace the freewheel body.
Note:
Do not attempt to disassemble the
freewheel body, because it may
result in a malfunction.
Installation of the brake lever
5 mm Allen key
FH-MC18
Freewheel body Freewheel body fixing bolt
Disassembly
Assembly
10 mm Allen key (TL-WR37)
Tightening torque:
5 - 7 Nm {44 - 60 in. lbs.}
Disassembly
Assembly
Freewheel body washer
10 mm Allen key
(TL-WR37)
Both lever (A) and lever (B) always return to the initial position when they are
released after shifting. When operating one of the levers, always be sure to turn
the crank arm at the same time.
Inserting the inner cable
Insert the inner cable into the outer casing from
the end with the marking on it. Apply grease
from the end with the marking in order to
maintain cable operating efficiency.
FH-R080
Freewheel body
Gear shifting operation
Cutting the outer casing
When cutting the outer casing, cut the opposite end
to the end with the marking. After cutting the outer
casing, make the end round so that the inside of the
hole has a uniform diameter.
Attach the same outer end
cap to the cut end of the
outer casing.
To shift from a small sprocket to a larger sprocket
Marking
To shift one step only, press lever (A) to the (1)
position. To shift two steps at one time, press to the (2)
position. A maximum three-step shift can be made in
this manner.
5
6 7 8
2
Lever (A) initial
position
To shift from a large sprocket to a smaller sprocket
Outer end cap
1 2 3 4
O
AN
HYPERGL I DE - C
This service instruction explains how to use and maintain the Shimano
bicycle parts which have been used on your new bicycle.
For any questions regarding your bicycle or other matters which are not
related to Shimano parts, please contact the place of purchase or the
bicycle manufacturer.
77 Oimatsu-cho 3-cho Sakai Osaka 590-8577 Japan Phone 0722-23-3243
Outer casing
adjustment barrel
Use a handlebar grip with a maximum
outer diameter of 32 mm.
Freewheel body washer
Please note: specifications are subject to change for improvement without notice. (English)
© Oct. 1998 by Shimano Inc. XBC SZK Printed in Malaysia
Clockwise ➁
For the best SIS performance, periodically lubricate
all power-transmission parts.
13
T
Industrieweg 24 NL-8071 CT Nunspeet Holland Phone 31-341-272222
Counterclockwise ➀
Reel unit hole
Inner link
SHIMANO JAPAN
CHAIN GAUGE
Connecting pin
6 7 8
Inner cable
SHIMANO JAPAN
CHAIN GAUGE
* Always be sure to use the sprocket set
Group marks
bearing the same group marks. Never use in
combination with a sprocket bearing a different
group mark.
ag - 18T
ag -15
T
ag
* Because the high cable resistance of a frame
with internal cable routing would impair the
SIS function, this type of frame should not be
used.
* Use an outer casing which still has some
length to spare even when the handlebars are
turned all the way to both sides. Furthermore,
check that the shifting lever does not touch the
bicycle frame when the handlebars are turned all the way.
* Grease the inner cable and the inside of the outer casing before use to
ensure that they slide properly.
* For any questions regarding methods of installation, adjustment,
maintenance or operation, please contact a professional bicycle dealer.
These service instructions are
printed on recycled paper and
can be recycled again
gear, increase the inner cable
tension ➀ while turning the
crank arm forward. Stop turning
the outer casing adjustment
barrel just before the chain
makes noise against the 3rd
gear.
This completes the adjustment.
2.38mm
B
A, B Q 0.2mm
®
➁
(2) Next with the chain on the 2nd
5
Indicator
Connecting pin
1=2.38mm
TL-CN24
Note
Chain gauge
TL-CN24
1=2.38mm
TL-CN24
A
One Holland Irvine CA 92618 U.S.A. Phone 949-951-5003
Outer casing
adjustment barrel
4
8
1=2.38mm
TL-CN24
Tooth combination
SHIMANO JAPAN
CHAIN GAUGE
Group name
Gears
chain from the top gear to the 2nd gear.
* If the chain will not move to the 2nd
gear, turn the outer casing adjustment
barrel to increase the tension ----- ➀
(counter clockwise)
* If the chain moves past the 2nd gear,
decrease the tension --- ➁ (clockwise)
➀
Chain
Gears
Model number
Largest chainring
Remove the two indicator fixing screws which are
securing the indicator, and then remove the indicator unit
as shown in the illustration.
Operate lever (B) 8 or more times to set the lever to the
highest position. Pass the inner cable through the lever
hole and hook it onto the lever, and then secure the
indicator unit with the two indicator fixing screws.
4
Total capacity
3rd 2nd Top
2. Connection and securing of the cable
RD-MC18
Gears
5. SIS Adjustment
(1) Operate the shifting lever to move the
Press lever (B) once to shift one step from a larger to a
smaller sprocket.
1
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