TM-9-2320-273-34

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1980

TM-9-2320-273-34 - Page 435 of 801

TM 9-2320-273-34

e. Install Differential and Gear Assembly.

(1)

Pre-lubricate the differential bearings and

CUPS

with gear lube (item 30, App B).

(2)

Place the cups over the bearings and position the assembly in the carrier housing.

(3)

Insert the bearing adjusting nuts and turn hand-tight against bearing cups.

CAUTIO N

If bearing caps do not position properly,

adjusting nuts might be cross-threaded.

Remove caps and reposition the adjusting

nuts. Forcing the caps into position will

result in irreparable damage to the carrier

housing or bearing caps.

(4)

Install the bearing caps in the correct location as marked and tap lightly into position.

(5)

Install the carrier leg capscrews and washers and torque to 290-350 Ib-ft (393-475 N·m).

f. Adjust the Differential Bearing Preload.

(1)

Using a dial indicator at the backface of the gear (fig. 10-25), loosen the bearing adjusting

nut on

the side opposite gear on/y

sufficient to notice end play on the indicator.

(2)

Tighten the same adjusting nut only sufficient to obtain 0.000 end play.

(3)

Check the gear for run-out. If run-out exceeds 0.008 in. (0.203 mm), remove the differen-

tial and check for cause.

(4)

Starting with 0.000 end play, tighten each adjusting nut one notch. This will properly

preload the differential bearings.

g. Check Gear Back/ash.

If the drive gear was not replaced, the established backlash recorded

before disassembly should be used. For new gears the new backlash should be initially set at 0.010 in.

(0.254 mm). Adjust backlash (fig. 10-26) by moving the gear only. This is done by backing off one

adjusting ring and advancing the opposite ring the same amount.

10-27