Honda GL1800 Service Manual page 382

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Install the case cover and tighten the bolts in several

steps until the cover evenly touches the gear case.

Then, while rotating the pinion gear, tighten the

bolts to the specified torque in a crisscross pattern

in several steps.

TORQUE: 10 mm bolt: 62 N·m (6.3 kgf·m, 46 lbf·ft)

8 mm bolt: 25 N·m (2.6 kgf·m, 19 lbf·ft)

Remove the oil filler cap.

Rotate the ring gear several times in both directions

of rotation.

Check the gear tooth contact pattern through the oil

filler hole.

The pattern is indicated by the Prussian Blue

applied to the pinion gear.

Contact is normal if the Prussian Blue is transferred

to the approximate center of each tooth and slightly

towards the face.

If the patterns are not correct, remove and change

the pinion shim with a suitable one.

Replace the pinion gear shim with a thicker one if

the contact pattern is too high, toward the face.

Replace the pinion gear shim with a thinner one if

the contact pattern is too low, toward the flank.

• Seven different shim thicknesses (from A to G)

are available in increments of 0.06 mm (0.002 in).

PINION SHIMS:

A (thinnest): 1.32 mm (0.052 in)

D (standard): 1.50 mm (0.059 in)

G (thickest): 1.68 mm (0.066 in)

For pinion gear shim replacement, see page 12-14.

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