Adjustment -706880905

TM 5-4210-233-14&P-1

5-39. STEERING GEAR-Continued

(52)

Pack the area around the input shaft with high temperature grease (Item 15, Appendix E) and

install the dirt and water seal (40), using seal driving tool or suitable blunt-ended drift.

(53)

Apply more of the high temperature grease to the cupped side of the new seal protector (33) and

assemble it, cupped side in, on to the worm shaft/input shaft (1) and into the serration relief groove.

(54)

Install manual bleed screw (62) into the gear housing (18) and torque it to 27-33 in. Ib. (3.1-3.7

N.m).

d. Adjustment.

(1) To center the steering gear, rotate worm shaft/input shaft (1) until the timing mark on the end of

sector shaft (2) is perpendicular to the worm shaft/input shaft.

NOTE

Initial worm preload adjustment was accomplished in step (43)

before assembly of sector shaft (2).

(2) Tighten sector shaft adjusting screw (8) to provide 25 to 30 in. Ibs. (2.8 to 3.4 N.m) of torque

required to rotate the worm shaft/input shaft (1) through 1800 each side of center. Note this alue.

NOTE

This procedure will properly mesh and seat the rack piston teeth

and sector shaft teeth for final adjustments.

(3) Loosen sector shaft adjusting screw (8) one turn and note maximum torque required to rotate the

worm shaft/input shaft (1) through 180' each side of center.

(4) Adjust sector shaft adjusting screw (8) to increase maximum torque in step (3) by 2 to 4 in. Ibs.

(.23 to .45 N.m). Torque jam nut (7) using a 3/4 inch socket, to 40 to 45 ft. Ibs. (54 to 61 N.m) and

check worm shaft/input shaft torque again. Re-adjust if worm shaft/input shaft torque exceeds 20

in. Ibs. (2.3 N.m).

(5) Adjust worm shaft/input shaft adjusting screw (26), a 5/16 inch Allen wrench or screwdriver

required, to increase maximum worm shaft/input shaft (1) torque in step (3) by 10 to 15 in. Ibs. (1 1

to 1.7 N.m). Torque sealing nut (25) to 70-80 ft. Ibs. (95-108 N.m) using a 1-1/16 inch socket and

check worm shaft/input shaft torque again. Readjust if worm shaft/input shaft rogue exceeds 35 in.

Ibs. (4.0 N.m).

e. Follow-on Maintenance.

(1) Install steering gear (see para 4-161).

(2) Connect batteries (see para 4-114).

5-235