APPENDIX C. TOP AND BOTTOM BEAM AND HYDRAULIC LIFT CYLINDER REMOVAL / INSTALLATION

MWO 9-2330-390-35-1

APPENDIX C:

TOP AND BOTTOM BEAM AND HYDRAULIC LIFT

CYLINDER REMOVAL / INSTALLATION

a. REMOVAL

WARNING

DO NOT disconnect hydraulic lines and fittings while engine is running or before

hydraulic system pressure has been released. When engine is running, hydraulic

system is under pressure. Dolly set must be fully lowered on to the blocks and

the engine must be shut down before lines and fittings are disconnected. A line

or fitting disconnected under pressure will explode with great force and cause

serious injury or death to personnel.

Escaping hydraulic fluid under pressure can penetrate the skin, causing serious

injury to personnel. Relieve pressure before disconnecting hydraulic lines and

fittings. Tighten all connections before applying pressure. Keep hands and body

away from pinholes and nozzles that eject hydraulic fluid under high pressure.

Use a piece of cardboard or paper to search for leaks. If any hydraulic fluid is

injected into the skin, it MUST be surgically removed within a few hours by a

doctor familiar with this type of injury or gangrene may result.

NOTE

Procedures are the same for front and rear dollies. Rear dolly is illustrated.

1. Disconnect two hose assemblies (6) from straight connectors (5) at positioning cylinders

(2) inside bottom beam (3).

2. Remove two straight connectors (5) and preformed packings (4) from positioning

cylinders (2). Discard preformed packings.

3. Attach a suitable lifting device to top beam (1) and adjust so that weight of top beam is

on the lifting device.

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