HYDRAULIC PUMP - TM-55-1740-200-140166

TM 55-1740-200-14

on retainer (33). Install retainer (33) and retaining ring

(3). Install lever (5) with cotter pin (3) and washer (4).

(28) in cylinder (39).

Secure lever end of assembled valve with cotter pin (1)

and pin (2).

c. Secure cover (25) to retainer (33) with four screws

(26) and washers (27). Attach clamp (21) to tube assem-

4-496. INSTALLATION. See figure 4-8 and install the

bly with one screw (22) washer (23) and nut (24).

rear cam and valve assembly as follows:

d. Assemble one retainer (19), spring (18), two seats

a. Install cam and valve assembly (105) and secure

(17) and one plug (16) in housing (20). Install socket

with two screws (106), washers (107) and nuts (108).

(15). Assemble one retainer (13), spring (12), two seats

Install washer (93) and nut (92).

(11), and one plug (10) in housing (14).

b. Secure shield (101) with two screws (102), washers

e. Attach two clamps (6) to housing (20 and 14) with

(103) and nuts (104). Install four hose assemblies (28, 30,

two screws (7), washers (8), and nuts (9). Install two

65 and 66) and clamp (33).

lubrication fittings (4). Screw two housing assemblies on

threaded rod (34) and socket (15) and tighten two screws

4-497. HYDRAULIC PUMP.

(7). Install two packings (3), bushings (2), and elbows (l).

4-498. REASSEMBLY. See figure 4-13 and reassemble

4-502. INSTALLATION. See figure 4-14 and install

the hydraulic pump as follows:

the front and rear booster cylinders as follows:

a. Install bearing (17), seal (16), drive shaft (15),

a. Install socket assemblies of both cylinders on ball

bearing (13) and ring (12) in pump body (18). Insert key

studs. Adjust plugs (10 and 16) in socket assemblies.

(14) in shaft (15). Secure bracket (10) to pump body

Install cotter pin (5) in each socket assembly.

(18) with two bolts (11).

b. Install inlet and outlet hose assemblies.

b. Install two alinement pins (6) and packing (3) in

rotor ring (7). Insert ten vanes (8) in rotor (9). Install

4-503. STEERING GEAR.

packing (3) in pump cover (1). Assemble rotor ring (7),

rotor (9), plate (5), spring (4), and pump cover (1) to

4-504. REASSEMBLY. See figure 4-15 and reassemble

pump body (18) and secure with four screws (2).

the steering gear as follows:

a. Place cover (43), two bearings (42), and seal (41) in

4-499. INSTALLATION. See figure 4-8 and install the

housing (44).

hydraulic pump as follows:

b. Place 28 balls (38) in two rings (37). Secure cup

a. Attach hydraulic pump (21) to bracket with four

(37) on cam (39) with retaining rings (36). Slide cam

screws (22), washers (23), washers (24), and nuts (25).

assembly into housing (44):

Install pulley adapter (17) on pump (21) and secure with

two setscrews (18).

c. Install shims (32, 33 and 34) and cover (31) on

housing (44) and secure with four screws and washers.

b. Attach pulley (14) to adapter (17) with three

screws (15) and washers (16). Install and adjust drive belt

d. Insert two bearings (24) in levershaft (25) and

(13), Tighten four screws (22). Install pipe nipple (19),

install levershaft. Assemble setscrew (19), nut (18) and

elbow (20) and hose (1) on pump (21).

cover (20). Install gasket (21) and cover (20) and secure

with ten screws (15 and 16) and washers (17).

4-500. BOOSTER CYLINDER.

e. Assemble tubes (30 and 40) and bearing (29).

4-501. REASSEMBLY. See figure 4-14 and reassemble

Install spring seat (28), spring (27), and steering wheel

the booster cylinders as follows:

(13). Secure wheel with nut (35).

a. Install two rings (37) on piston (38). Secure piston

f. Assemble washer (12), spring (11), plate (9), ferrule

to rod (34) with cotter pin (35), nut (36).

(8) and terminal (6) on cable (7). Insert cable assembly in

steering wheel (13) and secure with three screws (10).

b. Insert rod and piston assembly into cylinder (39).

Assemble backup ring (32) and packings (29, 30, and 31)

4-114