engine top end and exhaust system
CHAPTER FOUR
ENGINE TOP END AND EXHAUST SYSTEM
This chapter provides procedures for the engine top end
and exhaust system. Engine removal is required to service
all top end components.
Tables 1-3 are at the end of this chapter.
The V-Rod is liquid-cooled 60° V-twin engine with double overhead camshafts. The crankshaft is supported by
two main bearings and the camshafts are chain driven by
the timing sprocket on the right side of the crankshaft. The
camshafts operate directly on top of the valve tappets, while
shims under the valve tappets determine valve clearance.
The cylinders are an integral part of the upper crankcase.
Refer to Chapter Five for upper crankcase/cylinder block
procedures.
The lubrication system, covered in Chapter Five, is wet
sump with the oil supply contained in the lower crankcase.
The crankshaft driven oil pump delivers oil through the oil
filter and then to the oil cooler. These components are covered in Chapter Five.
ENGINE SERVICE
1. Review Chapter One, especially the Measuring Tools
and Service Methods sections. Accurate measurements are
critical to a successful engine rebuild.
2. Clean the entire engine and frame with degreaser before
removing engine components. A clean motorcycle is easier
to work on and helps prevent the possibility of debris falling into the engine.
3. Cover the drive belt before degreasing the engine. The
chemicals in the degreaser will damage the drive belt.
4. Have all the necessary tools and parts on hand before
starting the procedure(s). Store all parts in boxes, plastic
bags and various containers. Use masking tape and a permanent, waterproof marking pen to label parts. Record the
location, position and thickness of all shims and washers as
they are removed.
5. Engine service requires a number of special tools. These
tools and their part numbers are described in the procedures. For a complete list of the tools mentioned in this
manual, refer to Table 11 in Chapter One.
6. Use a box of assorted size and color vacuum hose identifiers for identifying hoses and fittings during engine services.
7. Throughout the text there are references to the left and
right side of the engine. This refers to the engine as it is
mounted in the frame, not how it may sit on the workbench
or in an engine stand.
8. When inspecting components described in this chapter,
compare the measurements to the service specifications in
Table 2. Replace any part that is out of specification, worn
to the service limit or damaged.
9. Always replace worn or damaged fasteners with those
of the same size, type and torque requirements. If a torque
specification for a specific fastener is not provided, refer to
the torque recommendation table in Chapter One.
10. Use a vise with protective jaws to hold parts.
4
178
CHAPTER FOUR
EXHAUST SYSTEM (ALL MODELS EXCEPT
VRSCR, VRSCD AND VRSCDX MODELS)
1
3
1
6
4
1
7
8
1
2
10
1
5
1
1
12
13
11
18
14
17
16
17
16
15
25 21
26
22
23
24
27
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Clamp
Heat shield–rear
Nut
Exhaust pipe–rear
Clamp
Gasket
Retaining ring
Exhaust pipe–front
Heat shield–front
Muffler–rear cylinder
Muffler–front cylinder
Clamp (all models except VRSCSE)
Clamp (all models except VRSCSE)
Clamp (VRSCSE models)
Clamp (VRSCSE models)
19
30
28
29
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
Washer (VRSCSE models)
Bolt (VRSCSE models)
Volume pipe
Heat shield–outer
Heat shield–inner
Screw
Lower mounting bracket
Washer
Bolt
Nut
Pin
Bracket
Lockwasher
Bolt
Rubber isolator
20
9
ENGINE TOP END AND EXHAUST SYSTEM
2
179
6
4
3
11. Use a press or special tools when force is required to
remove and install parts. Do not try to pry, hammer or otherwise force them on or off.
12. Replace all O-rings and seals with new ones during
assembly. Set aside old seals and O-rings so they can be
compared with the new ones if necessary. Apply a small
amount of grease to the inner lips of each new seal to prevent damage when the engine is first started.
EXHAUST SYSTEM (ALL MODELS EXCEPT
VRSCR, VRSCD AND VRSCDX)
Removal
Refer to Figure 1.
4
WARNING
Do not remove or service the exhaust system
when it is HOT.
NOTE
It is recommended to remove the exhaust
system as an assembly to maintain the alignment of all components. The mufflers can be
removed separately if needed.
5
1. Support the motorcycle on level ground on a swing arm
stand.
2. Block the front wheel so the motorcycle will not roll in
either direction while on the swing arm stand.
3. Remove the bolts securing the drive sprocket cover
(Figure 2) and remove it. This is necessary to reach the
rear cylinder left side flange nut.
4. Remove the clamps securing the heat shields (Figure
3). Remove all three heat shields to protect the finish. This
is also necessary to assist in moving the exhaust pipe flange
away from the cylinder head studs.
5. Remove the upper Allen bolt (Figure 4) securing the
muffler assembly to the rear portion of the mounting
bracket.
6. Remove the exhaust pipe flange nuts at the front cylinder head. Refer to Figure 5 and Figure 6.
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