Assembly-continued -706880898

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

5-39. STEERING GEAR-Continued

NOTE

To ease the later assembly of the sector shaft (2),

rotate the rack piston worm shaft assembly in the

housing so that the rack piston teeth are exposed in

the sector shaft cavity of the housing.

(12)

If disassembled, assemble a new worm shaft input shaft adjusting screw sealing nut (25) onto the

solid (nonslotted) end of the worm shaft preload adjusting screw (26), so that the seal on the

sealing nut will face the end cover (31). Assemble one N W poppet valve adjusting screw sealing

nut (27) onto the poppet valve adjusting screw (28) and assemble the other NEW poppet valve

adjusting screw sealing nut (27) onto the other poppet valve adjusting screw (34) in the same

manner as described for parts (25) and (26).

CAUTION

If the screws are of unequal length, you must install the shorter

screw into end cover. Otherwise, the poppet assembly may

break and cause the steering gear to lockup.

(13)

Assemble poppet adjusting screw (28) and nut (2 ) assembly into end cover (31) a few turns.

NOTE

The poppet valve adjusting screws may or may not be of the

same length. If not the same length, assemble the shorter

adjusting screw (28), 2.25 in. (57 mm) long, into the end cover

(31).

(14)

Assemble the worm shaft preload adjusting screw (26) and nut (25) assembly into the end cover

(31) a few turns.

(15)

Apply clean grease to the end cover seal ring groove on the end cover (31). Install the new end

cover seal ring (32) into the end cover seal ring groove.

NOTE

When installed, the end cover seal ring should extend slightly

above the machined surface of the end cover.

CAUTION

When performing step (1 6), make sure that the rack piston (46)

teeth are fully visible in the sector shaft cavity of the housing.

This is necessary to insure proper location of the poppets, and to

insure that the poppet adjusting screw will contact the poppets.

5-228