TM 5-4310-335-14
(a) Assemble a plug and retainer to the outlet end of piston (6). Slowly apply a proof pressure of
4500 psi (316.350 kgs per sq cm) and hold for 1/2 minute. No failure or permanent set is acceptable. Relieve
the proof pressure and remove the plug.
(b) Back off locknut (9, fig. 7-7) and adjust cap (2) until the valve passes a full flow of 18 cfm,
when a pressure of 3900 psi (274.1700 kgs per sq cm) maximum is applied. Cycle valve 10 times from full
open to zero inlet pressure. Hold cap (2) securely in place while locking with locknut (9).
(c) Check for leakage by applying 3900 psi (274.1700 kgs per sq cm) pressure and adjusting the
inlet pressure to 3450 psi (242.5350 kgs per sq cm). Hold pressure for 1 minute to stabilize. Leakage shall not
exceed 5 cc per minute.
(d) Lockwire the valve and assemble seal (1) to lockwire.
(e) Recheck the full flow and reseat pressures after lockwiring to insure settings have not altered.
Section II. FRAME ASSEMBLY
7-2. Frame
a. Disassembly.
(1) Remove hexagon locknuts (1, fig. 7-8), flatwashers (2 and 3), machine bolts (4) and top support (5).
(2) Remove hexagon locknuts (6), flatwashers (7), tie down supports (8) and cart tie downs (9).
(3) Remove hexagon locknuts (10), flatwashers (11), machine bolts (12), flatwashers (13) and sphere
mounting plate (14).
(4) Remove hexagon locknuts (15), flatwashers (16), machine bolts (17), flatwashers (18) and bottom
support bracket (19).
(5) Remove hexagon locknuts (20), flatwashers (21), machine bolts (22), flatwashers (23) and top
support bracket (24).
(6) Remove hexagon locknuts (25), flatwashers (26), machine bolts (27), flatwashers (28), handle clamps
(29), protection caps (30) and cart handle (31).
(7) Remove hexagon locknuts (32), flatwashers (33), machine bolts (34), flatwashers (35), cotter pin
(36), spread tube (37), flatwasher (38), chain hook (39), chain (40), chain hook (41), quick release pin (42) and
towbar mounting bracket (43).
(8) Remove cart towbar (44) and pad (45).
(9) Remove covers (46), hexagon locknuts (47), flatwashers (48), hexagon head machine bolts (49),
flatwashers (50), lifting ring straps (51), pads (52) and lifting rings (53) leaving frame (54).
WARNING
Dry cleaning solvent, P-D-680, used to clean parts is potentially dangerous to
personnel and property. Do not use near open flame or excessive heat. Flash
point of solvent is 100 138 . (38 to 59 ).
F
F
C
C
c. Cleaning. Clean all parts of the frame assembly using cleaning solvent Fed. Spec. P-D-680.
d. Inspection.
(1) Inspect metal parts for dents, scratches, cracks, breaks, rough edges or thread damage.
(2) Inspect chain fop broken links.
(3) Inspect pad hose and pads for cracking and deterioration.
e. Repair.
(1) Remove dents and scratches on metal parts; weld cracks and minor breaks.
(2) Replace other defective parts as necessary.
f. Assembly.
(1)Install covers (46, fig. 7-8), hexagon locknuts (47), flatwasher (48), hexagon head machine bolts (49),
flatwashers (50), lifting ring straps (51), pads (52) and lifting rings (53) to frame (54).
(2) Install cart towbar (44) and pad (45).
(3) Install hexagon locknuts (32), flatwashers (33), machine bolts (34), flatwasher (35), cotter pin (36),
spread tube (37), flatwasher (38), chain hook (39), chain (40), chain hook (41), quick release pin (42) and
towbar mounting brackets (43).
(4) Install hexagon locknuts (25), flatwashers (26), machine bolts (27), flatwashers (28), handle clamps
(29), protection caps (30)and cart handle (31).
(5) Install hexagon locknuts (20), flat
7-9
