CHAPTER 4 REPAIR OF HYDRAULIC SYSTEM

TM 10-3930-632-34

CHAPTER 4

REPAIR OF HYDRAULIC SYSTEM

Section I. GENERAL DESCRIPTION

mounted on a plate at the fan end of the engine and

4-1. General

which is gear-driven by the engine. The reservoir, from

which the hydraulic fluid is supplied, is built into the truck

The main hydraulic system uses a hydraulic lift cylinder

frame. The flow of hydraulic fluid is controlled by a lever

mounted on the mast assembly to raise the loads being

operated hydraulic control valve. A brief description of

handled by the lift truck. Two hydraulic tilt cylinders,

each component is provided as an introduction to the

mounted between the mast and the truck frame, tilt the

paragraph covering that component.

mast to the required attitude.

Hydraulic power is

supplied by a vane-type hydraulic pump which is

Section II. LIFT CYLINDER

4-2. General

4-3. Removal

The lift cylinder is a single-acting, two-stage hydraulic

Remove the lift cylinder (para 2-6).

cylinder. It provides power to lift. It is lowered by the

weight of the carriage or mast. When the limit of the first

4-4. Disassembly

stage of the hydraulic cylinder is reached, the second

stage operates to continue the lifting effort.

Refer to figure 4-1 and disassemble the lift cylinder.

Note the following:

4-1