California Air Tools 3010 Service Manual download pdf (Page 287)

100

101

FINAL DRIVE 12-17

Front Final Gear Case

If the preload is out of the specified range, replace the

collar and/or shim(s).

○

To increase preload, decrease the size of the shim(s)

or collar. To decrease preload, increase the size of the

shim(s) or collar.

○

Change the thickness a little at a time.

•

Recheck the bearing preload, and readjust as necessary.

•

Measure the bearing preload using a spring scale.

Using S p r in g Scale

Pinion Gear Bearing Pre lo ad:

1.5 ∼ 3.0 N (0.15 ∼ 0.31 kgf, 0.34 ∼ 0.67 lb)

○

Hook the spring scale [A] on the handle at a point 200

mm (7.87 in.) [B] apart from the center of the gear shaft.

Hold the bearing housing in a vise so that the gear shaft

is vertical.

○

Apply force to the handle horizontally and at a right angle

to it.

Special Tool - Pinion Gear Holder [C]: 57001-1281

•

Measure the bearing preload using a torque wrench [A].

Using Torque Wrench

Pinion Gear Bearing Preload Torque:

0.3 ∼ 0.6 N·m (0.0 3 ∼ 0.06 kgf·m, 2.6 ∼ 5.2 in·lb)

Special Tool - Pinion Gear Holder [B]: 57001-1281

Backlash Adjustment

•

Check and adjust the gear backlash when any of the

backlash-related parts are replaced with new ones.

•

Clean any dirt and oil off the bevel gear teeth.

•

Assemble the front final gear case (see Front Final Gear

Case Assembly). Do not install the O-rings during adjust-

ment.

○

Check the backlash during tightening of the ring gear

cover bolts and stop tightening them immediately if the

backlash disappears. Then, change the ring gear shim

to a thinner one.

•

Set up a dial gauge against a ring gear tooth to check gear

backlash s hown.

•

To measure the backlash, move the left front axle (ring

gear side) back and forth while holding the pinion gear

steady. The difference between the highest and the low-

est gauge reading is the amount of backlash.

If the backlash is not within the limit, replace the ring gear

shims. To increase backlash, decrease the thickness of

the s him(s). To decrease backlash, increase the thick-

ness of the shim(s).

○

Change the thickness a little at a time.

•

Recheck the backlash, and readjust as necessary.

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California Air Tools 3010 Service Manual Page 287

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