Figure 4-10. Hydraulic Motor Assembly.

TM55-1730-228-13&P

4-12. HYDRAULIC MOTOR, BRAKE AND DRIVE HUB ASSEMBLY- REPAIR (Continued)

4-12

a. HYDRAULIC MOTOR:

(1) Disassembly:

(a) Secure motor, brake and hub assembly in a bench vise with soft jaws.

(b) Remove two capscrews (1, Figure 4-9) and washers (2) securing motor (3) to brake (4) and drive hub (5).

Tap lightly with a mallet to break loose and separate.

Figure 4-10. Hydraulic Motor Assembly.

(d) Scribe the motor case for ease of reassembly.

(e) Remove four bolts (1, Figure 4-10).

(f) Mount motor in vise with shaft up.

(g) Slide off bearing housing (2) and press the shaft and bearing assembly (3) from the housing.

(h) Remove preformed packing (4) and seals (5 and 6) and discard.

(i) Remove the wear plate (7) and drive shaft (8).

(j) Remove and discard seal (9) and preformed packings (10 and 11).

(k) Remove the geroler assembly (12) being careful not to upset the rotor or rollers within.

(l) Remove valve plate (13) and drive (14).

(m) Remove and discard preformed packings (15, 16 and 17).

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