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CLYMER VF500C 500F (1984-1985)
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Honda CLYMER VF500C 500F (1984-1985) [110/350] Chapter four

Honda CLYMER VF500C 500F (1984-1985) [110/350] Chapter four

102

CHAPTER FOUR

bearing clearance

by

performing

the

following

steps.

4. Install

the

piston/connecting

rod

assemblies

into

the correct

cylinders

as

described

in

this

chapter.

5. Place

a strip

of

Plastigage

material

over each

rod

bearing

journal

parallel

to the

crankshaft

(Figure

161).

Do not

place

the

Plastigage

material

over an

oil

hole in

the crankshaft.

NOTE

Do

not rotate

the cranlcshaft while

the

Plastigage

strips are in

place.

6.

Install

the

rod

cap onto

one

rod

and tighten

the

nuts

to the torque specification listed

in Table 2.

7. Remove

the

rod

cap and measure

the

width

of

the

flattened Plastigage

material

(Figure

162)

following

the

manufacturer's instructions.

Measure

both

ends of the

Plastigage

strip.

A

difference of

0.025

mm

(0.001

in.)

or more indicates

a tapered

journal.

Confirm

with

a micrometer. New

bearing

clearance and the service limit

are

listed

in Table 1.

Remove

all of the

Plastigage

material from

the

crankshaft

journals

and the connecting rods.

8.

If

the

rod

bearing

clearance

is

greater

than

specified, use the following

steps for new

bearing

selection.

9.

The

crankshaft

rod

journals

are

marked with

letters

66A"

or

'68"

(A,

Figure 163)

on

the

counterbalance

weights.

The

connecting

rod

and

cap are

marked with

numbers

"1"

or

"2"

(Figure

164).

10. Measure

the rod

journal

(A,

Figure

165) with

a

micrometer. If

the rod

journal

dimension

is within

the

tolerances stated

for

each letter

code

in Table

3

the bearing

can be simply

selected by color code.

Select

new

bearings

by cross-referencing the rod

journal

letters

(A,

Figure 163) in

the horizontal

column

of

Table

3 to the

rod

bearing

number

(Figure

164) in

the

vertical

column. Where

the

2

columns intersect,

the

new

bearing color

is

indicated. Table 4

gives

the

bearing insert

color

and thickness.

11. If

any

rod

bearing

journal

measurements

taken

during

inspection

do not fall within

the tolerance

range for

the stamped letter

codes, the

serviceability of the crankshaft

must

be

carefully

examined.

If

the

rod

bearing

journal

in

question

is

not

tapered, out-of-round

or scored, the crankshaft

may

be still used. However,

the bearing selection

will

have

to be made

based on the

measured

diameter of

the bearing

journal

and

not

by the

stamped letter

code.

Honda

recommends the

crankshaft be

replaced

whenever

a

rod

bearing

journal

dimension is

beyond the specified

range

of

the stamped letter

code.

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