TM 5-4930-244-14
(24)
Grip trip rod (17) at shoulder with wrench. Remove the bottom trip-rod nut (49). Slip off piston retainer (44).
(25)
Unscrew and remove adapter (50) from cylinder head and plug assembly (20). Remove washer (51) and bushing
(52) from adapter (50).
(26)
Remove two hex head cap screws (53) from cylinder head and plug assembly (20).
(27)
Remove from bottom of packing retainer (41), gasket (58), washer (59), second gasket (58), and spacer (60).
(28)
Remove washer (61), seal (62), lantern ring (63), seal (64), spacer (65) and o-ring (66) through bottom of packing
retainer (41). Discard seal (62), seal (64), and o-ring (66).
(29)
Grab upper coupling (56) and push upward until contents of cylinder (55) is removed.
(30)
Unthread and remove upper coupling (56) from rod (67).
(31)
Disengage two lower spring clips (68) from lower coupler (69). Unscrew rod (67) from coupler (69) and coupler
(69) from piston (70).
(32)
Remove primer body (71) from pump tube adapter (72). Remove elastic stop nut (73) and plate (74) Use drift pin
in 5/32" hole in primer rod (75).
(33)
Remove gasket (76), valve seat (77) and second gasket (78). Remove valve body (79) from pump tube adapter
(72). Discard gasket (77).
(34)
Unscrew packing nut (80) from valve body (79) removing two nylon washers (81), seal (82), from primer rod (75).
Remove guide washer (83) from primer rod (75).
(35)
Pull primer rod (75) with piston (70) still attached through bottom of adapter (72) to expose roll pin (84). Drive roll
pin (84) out of primer rod (75) and insert assembly (85) with drift pin.
(36)
Unscrew adapter (72) from (55). Remove piston (70) from adapter (72) and insert assembly (85), and remove
ball (86), gasket (87), spring (88), retainer (89) and barrel assembly (90).
NOTE
Inspect piston for excessive wear. If worn or scored, it will be necessary to be
replaced
(m)
Pull barrel assembly (90) from piston (70) and remove two gaskets (91). Remove steel spacer (92), bearing (93),
seal (94) and wear ring (95) from barrel assembly (90). Discard gaskets (91) and seal (94)
b.
Repair.
WARNING
Dry cleaning solvent Is flammable. Do not use near open flame or non-ventilated
places Keep solvent away from open flames or sparks Avoid inhaling solvent
fumes Avoid contact with skin. Flash point of solvent is 100° F to 138° F (38° C to
59° C).
(1) Clean all parts with dry cleaning solvent.
(2) Discard and replace all packings and gaskets.
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