DIFFERENTIAL CARRIER ASSEMBLY - TM-9-2320-303-24-20268

TM 9-2320-303-24-2

REAR-REAR AXLE DIFFERENTIAL CARRIER REPAIR - CONTINUED

0259 00

DIFFERENTIAL CARRIER ASSEMBLY

Assemble Pinion and Cage.

CAUTION

Take care not to damage the bearing rib in the cage.

(1)

Coat the bearings (27 and 39) with gear lube (Item 33, WP 0312 00) and if new cups are to be installed,

press firmly against the pinion cage (26) shoulders.

(2)

Press the rear (inner) bearing (39) firmly against the pinion shaft (25) shoulder with a suitable sleeve that

will bear only on the bearing inner race.

(3)

Insert the pinion shaft (25) and bearing (39) assembly in the pinion cage (26) and position the spacer (36)

or spacer combination over the pinion shaft.

(4)

Press the front (outer) bearing (27) and washer (35) firmly against the spacer (36).

(5)

Rotate the cage (26) several revolutions to assure normal bearing contact.

(6)

While in the press, under pressure, check the bearing preload torque. Wrap a soft wire around the cage (26)

and pull on a horizontal line with a pound scale.

(7)

If a press is not available, the pinion nut (30) may be tightened to the correct torque and the preload

checked. The correct pressures and torque for checking the pinion bearing preload are as follows:

REQUIRED PRESSURE

REQUIRED NUT

TO OBTAIN CORRECT

TORQUE TO OBTAIN

PINION SHAFT

PRELOAD

CORRECT PRELOAD

THREAD SIZE

1 1/4 inch x 12

700-900 lb-ft

11 tons

(949-1220 Nm)

(10 metric tons)

NOTE

Use rotating torque, not starting torque.

(8)

If rotating torque is not within 20-45 lb-in (2.3-5.1 Nm) for new bearings, or 10-22 lb-in (1. 1-3.4 Nm) for

reused bearings, use a thinner spacer (36) to increase or a thicker spacer to decrease the preload.

(9)

Press the yoke (29) against the forward bearing (27) and install the pinion shaft washer (31) and nut (30).

(10)

Place the pinion and cage assembly in the carrier (15) and secure with capscrews (37) and washers (38).

Hold the flange and torque the pinion shaft nut (30) to 700-900 lb-ft (949-1220 Nm). The yoke (29) must

be held with a suitable tool or fixture to tighten the nut.

(11)

Recheck the pinion bearing preload torque. If rotating torque is not within 15-25 lb-in (1.7-3.8 Nm), repeat

the foregoing procedure.

(12)

Hold the yoke (29) and remove the pinion shaft nut (30) and washer (31). Remove the yoke.

(13)

Lubricate the oil seal (33) and coat the outer edge of the seal retainer (34) with a non-hardening sealing

compound (Item 14, WP 0312 00). Press the seal and retainer against the shoulder of the pinion cage (26)

with a seal driver.

(14)

Install slinger (28) and wiper (32).

(15)

Press the yoke (29) and washer (35) against the forward bearing (27) and install the washer (31) and pinion

shaft nut (30). Torque to 700-900 lb-ft (949-1220 Nm).

0259 00-4