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TM 5-4210-233-14&P-1
5-39. STEERING GEAR-Continued
NOTE
Valve sleeves are identified and matched to a right or
left hand lead of the worm screw. If the screw has a
right hand thread (that is, goes into the rack piston
when turned clockwise), the valve sleeve will have
the letter "R" stamped between the seal lands. For a
left hand worm lead (which will come out of the rack
piston when turned clock- wise) the mating valve
sleeve has no identifying letter or has the letter "L"
stamped between the seal lands.
(28)
Maintain pressure on the valve end of the valve housing (35) to insure continued engagement of
the drive lugs and thrust bearing package. While maintaining pressure, rotate the valve housing to
align the poppet adjusting screw (34) with the poppet (58) in the rack piston (46). Continue
pressure, and rotate the input shaft to bring the valve housing into contact with the gear housing
face.
(29)
Assemble four valve housing bolts (36), 2.125 in. (53.98 mm) long, into the housing (18) and
torque to 150-170 ft. Ibs (203-230 N.m) if dry or 108-128 ft Ibs. (146-174 N.m) if lubricated.
WARNING
Use care in securely staking the retainer (24) into the sector
shaft slots. A retainer that is broken or cracked during the
staking procedure must be replaced as it could result in the
sector shaft not being retained and the loss of manual and
power steering control.
(30)
If the adjusting screw (8) has been removed from the sector shaft (2), clamp the sector shaft into a
soft-faced vise by gripping the serrated end. Coat the expanded end of the new adjusting screw
with wheel bearing grease (Item 53, Appendix E) and insert into recess in end of sector shaft.
Thread a new sector shaft screw retainer (24) into the sector shaft and adjust to permit free
rotation of sector shaft adjusting screw by hand without perceptible end play [.000 to .002 in. (.05
mm) loose]. Stake the new retainer into the two slots provided using a suitable punch and again
check freedom of adjusting screw movement and end play.
CAUTION
Use only wheel bearing grease. This bearing is sealed and will
receive no lubrication from the hydraulic fluid in the gear.
Failure to use wheel bearing grease could result in premature
bearing wear.
(31)
Apply a generous amount of clean wheel bearing grease (Item 53, Appendix E) to the bearing race
or caged bearing assembly inside the side cover (15).
5-231
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