VALVE INSTALLATION

INSPECTION. Proceed as follows:

(6) Lubricate a new cap-to-worm packing (92)

(1) Inspect the sleeve bearing (41) in the side

with SAE 10 engine oil, and install in valve assembly.

cover (42) for excessive wear or scoring. If badly worn

(7) If during the assembly of the valve, the

or scored, replace the side cover and bearing as an

stub shaft and cap assembly is allowed to slip out of

assembly.

engagement with the valve body pin, the spool may

(2) Check the sector gearshaft teeth and the

enter the valve body too far. The dampener packing will

bearing and seal surfaces. If badly worn, pitted, or

expand into the valve body oil grooves, preventing

scored, replace the gearshaft assembly.

withdrawal of the spool. Attempt to withdraw the spool

(3) Check the needle bearing (94) in the

with slight pulling and much rotary motion. If this does

housing.

not free the spool after several tries, make sure spool is

free to rotate, place valve body on flat surface with

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SECTOR GEARSHAFT AND SIDE COVER

notched end up, and tap spool with wooden or plastic

ASSEMBLY. Proceed as follows:

rod until packing is cut and spool can be removed.

(1) Assemble new needle bearing (94) into

Replace packing and proceed with assembly as before.

the gear housing (97) bore from seal bore end, pressing

against stamped Identification end.

Press in until

6-153.

VALVE INSTALLATION. Proceed as follows:

bearing clears shoulder in gear housing 0.030 inch

(1) Align valve body drive pin in the worm

maximum.

(71) with the narrow pin slot on the valve body (87).

(2) Lubricate new gearshaft seals in SAE 10

Insert the valve assembly into the gear housing (97).

engine oil. Install the single lip seal (54) first, then a

Do not push against stub shaft as this may cause stub

back-up washer (52). Drive the seal and washer in far

shaft and cap to pull out tilt the valve body, allowing

enough to provide clearance for the other seal, and

spool seal to slip into valve body oil grooves. Valve

back-up washer, and retaining ring. Seal must not

assembly should be pushed in by pressing against valve

bottom on end of counterbore. Install double lip seal

body with finger tips. Be sure valve is properly seated

(53) and second back-up washer. Drive seal and back-

before assembling adjuster plug assembly. Return hole

up washer in only far enough to provide clearance for

in gear housing should be fully visible at this time.

the retaining ring. Install sector gearshaft retaining ring

(2) lnstall adjuster plug (65) assembly as

(51), making certain that the ring is seated properly.

outlined in paragraph 6 148.

(3) Assemble side cover (42) and bearing

(41) assembly on the sector gearshaft assembly. Screw

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SECTOR GEARSHAFT AND SIDE COVER

the lash adjuster (47) through the side cover until the

REMOVAL. Proceed as follows:

side cover bottoms on the gearshaft, and back off 1/2

(1) Rotate stub shaft (88) until sector

turn.

gearshaft (49) is in cover position and remove side

cover retaining screws (39). Tap the end of gearshaft

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SECTOR GEARSHAFT AND SIDE COVER

with soft mallet and slide gearshaft out of housing.

INSTALLATION. Proceed as follows:

(2) Remove side cover packing (43) from

(1) Lubricate the new side cover packing (43)

side cover and discard.

and install in the groove in the face of the side cover

(42).

6-155.

SECTOR GEARSHAFT AND SIDE COVER

(2) Turn the stub shaft (88) as necessary until

DISASSEMBLY. Proceed as follows:

the middle rack groove is aligned with the center of the

(1) Hold lash adjuster (47) with a hex key

gearshaft needle bearing (94).

wrench and remove the lash adjuster nut (44) and

(3) Install the gearshaft (49) so that the center

discard. Screw lash adjuster out of side cover (42).

tooth in the sector meshes with the center groove of the

(2) Remove the sector gearshaft seal

rack on the ball nut (77). Make sure that the side cover

retaining ring (51), and then remove the outer back-up

packing is in place before pushing the side cover down

washer (52). Tap a screwdriver between the outer seal

on the gear housing.

and the inner back-up washer and pry out the seal. Tap

(4) Install the side cover screws (39) and

the screwdriver between the inner seal and the shoulder

tighten to 30 to 35 foot pounds.

in the gear housing and pry out the seal. Be careful not

(5) Install lash adjuster nut (44) on lash

to damage the seal bore. Discard seals.

adjuster without tightening. Adjust gearshaft (refer to

(3) Remove needle bearing (94) from gear

paragraph 6-168). Hold lash adjuster from rotating with

housing bore by

pressing on

the

stamped

a hex key wrench and tighten lash adjuster nut to 20 to

identification end of the bearing. Discard bearing.

30 foot pounds.

6-156.

SECTOR GEARSHAFT AND SIDE COVER

6-39