TM-9-2320-272-24-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4

JUNE 1998

TM-9-2320-272-24-1 - Page 836 of 1015

TM 9-2320-272-24-1

3-170. UPPER AND LOWER TORQUE ROD MAINTENANCE (Contd)

NOTE

Ball and bushing must be pressed in on chamber side only.

Using arbor press, press balls and bushings (1) into torque rod (2) at chamber side (3).

1.

Position upper spring bracket (8) over upper spring bracket dowel (9).

NOTE

2.

Perform step 2 for all models except M936/A1/A2 model vehicles.

Raise rear axle (10) until 6 in. (15.24 cm) is obtained between bottom of frame rail (7) and top of

spring bracket (8).

NOTE

3.

Perform step 3 for M936/A1/A2 model vehicles only.

Raise rear axle (10) until 7-1/4 in. (18.4 cm) is obtained between bottom of frame rail (7) and top of

spring bracket (8).

4.

5.

Place ball shaft (4) on upper torque rod (5) in upper torque rod bracket (6) and install with new

slotted nut (12). Finger-tighten slotted nut (12).

Place upper torque rod (5) and upper torque rod bracket (6) over dowel (11) on rear axle (10) and

position torque rod ball shaft (4) in spring bracket (8).

NOTE

6.

7.

Ensure upper torque rod bracket is seated over dowel pin and ball

shaft is in spring seat bracket before alignment is made.

Scribe an alignment mark from upper torque rod bracket (6) to torque rod (5).

Remove upper torque rod (5) and upper torque rod bracket (6) from rear axle (10) and spring

bracket (8).

8.

Place upper torque rod bracket (6) in vise with alignment marks aligned.

9.

Tighten slotted nut (12) 350-400 lb-ft (475-542 N•m) and install new cotter pin (13).

3-472