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 d. Assembly. Using new seals and packings,
(6) Remove capscrews (4) and lockwashers (8)
that attach upper cover (5) to housing and
reverse procedure in b above, making following
slide upper cover from steering shaft
adjustments during assembly:
assembly (24).
(1) When installing nut (b(14) above), tighten
(7) Remove seal (1) from upper cover
against thrust bearing to 10 foot-pounds
assembly.
torque; then back off 10to 20 which is
(8) Remove washer (8), roller bearing (7), and
approximately the width of one lug. Bend
bearing sleeve (6) from cover (5).
lug to secure nut.
(9) Slide steering shaft assembly (24) from
(2) Adjust backlash between steering shaft and
housing.
pitman shaft by first centering pitman shaft
(10) Remove seal (25) from top of housing.
on steering shaft, then tighten setscrew (54,
(11) Remove bearings (26 and 88) from
housing.
(24) until shifting shaft is tight against
(12) Remove rings (27 and 39) from housing
pitman shaft. Back off setscrew until only a
(18) Remove sleeve bearings (88) and seal (32)
slight drag is felt when steering shaft is
from housing.
turned by steering wheel.
(14) Straighten tang on washer (12) and remove
(3) Tighten nut (10) to 50 foot-pounds torque.
nut (11), washer (12), flat washer (18),
e. Installation. With steering wheels in straight
thrust washer (14), thrust bearing (15), and
ahead position and steering wheel in center position,
bearing race (16) from shaft assembly (24).
reverse procedure in a above.
(15) Remove preformed packing (17) and seal
(18) from bearing race (16).
55. Steering Hydraulic Pump
(16) Slide valve body (19) from shaft assembly
a. Removal.
(24).
(1) Disconnect inlet and outlet lines at pump.
(17) Slide bearing race (22) from shaft
(2) Remove nut and lockwasher from bottom
assembly.
mounting stud.
(18) Remove preformed packing (21) and seal
(3) Remove nut, washer, and bolt that secure
(20) from bearing race (22).
pump and adapter to engine and remove
(19) Slide thrust bearing (23) from shaft
pump and adapter through hole in frame.
assembly.
b. Disassembly.
c.
Cleaning, Inspection, and Repair.
(1) Unscrew and remove elbow and pipe (26,
(1) Wash all parts in SD.
(2) Inspect all bearings for scoring or pitted
(2) Remove elbow (27) from body (19).
conditions.
(3) Remove elbow fitting (17) from body (19).
(3) Check shaft assembly (47, fig. 87) for
(4) Press pump gear (1) from drive gear (29).
twisted or damaged splines and wear on
Remove adapter (4), bearing (3), and ring
surfaces of sleeve bearings (3388).
(2).
(4) Inspect shaft groove for chipping, scoring,
(5) Remove key (6) from drive gear (29).
and wear. Copper plating may be worn off
(6) Remove nuts (8), washers (9), washers
but this in itself is not reason for replacing.
(20), and screws (21) from body (19) and
(5) Check valve body (19) for freedom of
separate body (19) from cover (10) by
movement of plungers and springs.
gently tapping with rawhide mallet.
(6) Replace all unserviceable parts.
103
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