TM 55-1930-208-10
3-10. HAND PUMP, HYDRAULIC START SYSTEM- Continued.
c. Cleaning.
(1) Remove all build up of dirt or oil on all parts by wiping with a soft cloth (item 2, Appendix D).
WARNING
Do not breathe cleaning solvent vapors for long periods of time or use solvent near open flames. To avoid
illness, explosion, or fire, only use solvent in well ventilated areas away from open flames.
(2) Clean all metal parts using a clean, soft cloth (item 2, Appendix D) or a medium bristle brush (item 3,
(3) Allow all parts to dry.
d. Inspection.
(1) Inspect housing (30) for cracks or other visible damage. Bore of cylinder must be smooth with no pitting or
scoring.
(2) Inspect inlet fitting (20) check valve seat for nicks or scratches.
(3) Inspect inlet fitting (20) check valve ball (24) and spring (25) for damage.
(4) Inspect plunger (8) for scoring on large diameter and on plunger shank where it rides in plunger gland (9).
(5) Inspect all threaded components for damaged threads.
e. Repair. Repair is limited to replacement of any components found defective during inspection. Discard all seal,
O-rings, and back-up rings.
f. Reassembly. (Refer to figure 3-7).
NOTE
Make sure all parts are clean before assembly. To facilitate assembly, apply a coat of light oil on O-rings
and back-up rings.
(1) Install plug (29) and ball (28) into housing (30). Position O-ring (27) on bleeder screw (26). Install bleeder
screw (26) into housing (30).
(2) Install spring (25) and ball (24) into housing (30). Position O-rings (23 and 21) and back-up ring (22) on inlet
fitting (20). Install inlet fitting (20) into housing (30). Tighten fitting securely, being sure ball (24) seats properly
in end of inlet fitting (20).
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