ASSEMBLY - TM-55-1905-223-24-70151

TM 55-1905-223-24-7

g. Remove two hexagon head cap screws (57) and flat washers (56) projected into the liquid pump housing (55)

flange. Spring pressure from helical compression spring (40) will force the liquid pump housing (55) up and off the

hexagon head cap screws (57).

h. Lift liquid pump housing (55) up and off of cylinder housing (28). This will leave items (43) through (51) intact on

shouldered shaft (50

Replace preformed packings (41 and 52) with new ones.

REPAIR

Repair of the axial pistons pump hydraulic end is by replacement of preformed packings (23, 38, 34, 41, and 52).

ASSEMBLY

a. Install shouldered shaft (50) with items (43) through (51) intact on to cylinder housing (28) with housing (45) facing

down and shouldered shaft (50) keyway facing up.

b. Install liquid pump housing (55) on cylinder housing (28) aligning shouldered shaft (50). Keyway through shaft

opening on pump housing.

Install two flat washers (56) and hexagon head capscrews (57) into liquid pump housing (55) flange and secure

housing to cylinder housing (28). Pressure may be required to overcome helical compression springs (40)

tension.

d. Remove cellophane tape from shaft keyway.

e. Turn axial pistons pump over on shaft end.

Wipe cylinder housing (28) face with clean rag.

g. Wipe valve plate (21) hydraulic end side with clean rag.

h. Install valve plate (21) on pump.

Wipe valve plate (21) plumbing end face with clean rag.

Install manifold (13) with preformed gaskets (14 and 15) onto pump.

Install six plain hexagon nuts (7), twelve flat washers (8), six machine bolts (9), and secure manifold (13) to liquid

pump housing (55) flange.

Check oil that was drained. If oil is not milky, does not contain water, and if 500 hours (on time totalizer) have not

elapsed since last oil change, oil can be used again.

m. Install oil fill pipe cap (4) on metallic pipe (5) and pipe elbow (6) and secure.

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