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TM 5-4210-233-14&P-1
5-26. POWER STEERING PUMP - Continued
b.
Inspection.
(1) Inspect hoses and pump body. Damaged or deteriorating parts must be replaced.
(2) Inspect reusable hardware. Items with stripped or damaged threads must be replaced.
(3) Clean pump fittings thoroughly and inspect for damage including stripped threads. Replace as
required.
c.
Repair.
(1) Control Valve Repair.
CAUTION
Do not repair control valve (4). If faulty, the control valve must
be replaced. Valve malfunction and potential pump destruction
may occur if disassembly is attempted.
NOTE
Control valve may be replaced without removing steering pump
from truck.
(a) Remove two plugs (2) and spring (3).
(b) Insert a suitable tool through the bore where plugs (2) are removed and push control valve (5) out of
valve cover.
NOTE
Retaining ring (6) can remain in flow control cover unless it is
damaged. If removed, be careful not to scratch valve bore.
(c) Inspect flow control cover (5) bore. If scratched or otherwise damaged, replace the cover. Do not
attempt to repair.
NOTE
During handling and shipping of new control valve, burrs may be
raised on sharp edges. Be sure to remove these burrs before
installing valve.
(d) Coat the new control valve (4) with lubricating oil (item 10, Appendix E) and install it in the cover, small
land first.
(e) Check that valve slides smoothly in the valve bore and install spring (3).
(f)
Apply pipe sealant (Item 2, Appendix E) to plugs (2) and install plugs in flow control cover.
5-175
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