BLEEDING-continued

MWO 9-2330-390-35-1

APPENDIX D: HYDRAULIC SYSTEM BLEEDING (Con't).

NOTE

If bleeding hydraulic system of a dolly set with side lift kit, when ONLY side lift

positioning cylinders were replaced, top beams must be supported by a suitable

lifting device capable of raising 16 ft (4.9 m) above the floor. A sling with minimum

capacity of 5000 lb (2270 kg) must be used.

2. Support top beam (1) with a lifting device

as required.

3. Start engine.

4. Fill hydraulic reservoir.

NOTE

During extension, maintain slack in

hoist sling as top beam is raised.

5. Operate hydraulic control valve to extend

lift cylinders (73) and positioning

cylinders (2) in turn. Keep top and

bottom beams (1 and 3) vertical as

cylinders are extended.

6. When full extension is reached, hold lift

cylinder levers (56) and positioning

cylinders lever (71) in extend position for

30 seconds.

NOTE

During retraction, maintain slack in

hoist sling as top beam is lowered.

7. Operate hydraulic control valve to

retract lift cylinders (73) and positioning

cylinders (2) in turn. Keep top and

bottom beams (1 and 3) vertical as

cylinders are retracted.

8. When full retraction is reached, hold lift

cylinder levers (56) and positioning

cylinders lever (71) in retract position for

30 seconds.

D-2