HYDRAULIC LIFT SYSTEM (cont)

TM 10-3930-638-24&P

clogged, HYDRAULIC FILTER indicator on instrument

1-25. HYDRAULIC LIFT SYSTEM (cont)

panel illuminates. Equipped with automatic bypass; opens

at not less than 2 PSI and permits full flow at 3.5 PSI.

10. HYDRAULIC SCREEN. Located at bottom of

Includes fitting at top for bleeding air from system.

hydraulic reservoir in hydradic pump suction line. Filters

6. ROTATION CYLINDER. One used. Activated by

hydraulic oil before it reaches hydraulic pump.

control valve. Rotates forks 10 degrees minimum clockwise

11. LIFTING FORKS. Two used; 40 inch forks.

and counterclockwise from horizontal position.

Constructed of heavy-duty steel.

7. HYDRAULIC RESERVOIR. Integral part of rear

12. LIFT CHAINS. Two used; connected at one end to

chassis; capacity is approximately 40 quarts. Located to

inner mast, reeved over chain rollers and connected at

rear of operator's seat; return oil filtered by 10 micron

other end to carriage. Chains raise carriage.

filter. Breather and oil tiller located at top of reservoir;

13. MAST ASSEMBLY. Raises and lowers carriage by

oil screen located at bottom of reservoir in oil suction line.

means of lift chains. Free lift height (height of forks

8. HYDRAULIC PUMP. Mounted on rear of, and

without increased mast height) is not less than 48 inches.

driven by, transmission; also provides hydraulic power for

Consists of outer and inner mast. Includes mast latch

steering system and service brakes. 11.4 gallon-per-minute

pin used to latch outer and inner mast between zero to

capacity. 2500 PSI relief valve provided in hydraulic

system to limit pump.

12 inches height of lifting forks; disengages at over 12 inches

height of lifting forks. Ensures free lift travel of not less

9. HYDRAULIC FILTER. Ten micron filter; filters

return oil. Located at rear of hydraulic reservoir. When

than 48 inches.

1-14