TM-5-2350-262-20-3

ARMORED COMBAT EARTHMOVER (ACE), M9

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL; VOLUME 3 OF 3; HYDRAULIC TROUBLESHOOTING TEST PROCEDURES

TM-5-2350-262-20-3 - Page 235 of 319

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TM5-2350-262-20-3

Valve bank hydraulic system is supplied by hydraulic ports 13L and 13R.

Pressure is controlled by relief valves

13L and 13R.

WARNING

High pressure is present in the M9 hydraulic system.

Do not disconnect any hydraulic

system component unless hydraulic system pressure has been relieved.

Ensure each

hydraulic control lever is moved several times through all positions and hydraulic tank

dipstick is slowly loosened to relieve pressure.

Failure to comply may result in severe

injury or death to personnel.

DRIVER CONTROL CIRCUIT

15

VEHICLE DOES NOT RESPOND TO DRIVER CONTROLS

NOTE

Perform this procedure when all driver controls are inoperative.

Refer to hydraulic

schematic in appendix E.

COMPONENTS:

1.

RETURN LINE FILTER

2.

MAIN ACCUMULATOR

3.

HIGH-PRESSURE FILTERS

4.

EJECTOR CYLINDER

5.

DIRECTIONAL CONTROL

VALVE BANK

6.

WINCH MOTOR

7.

SPRUNG/UNSPRUNG

VALVE

8.

APRON CYLINDER

9.

BILGE PUMP MOTOR

10. HYDRAULIC RESERVOIR

11. NO. 4 ACTUATOR, LEFT

HAND

12. NO. 3 ACTUATOR, LEFT

HAND

13. SUSPENSION RELIEF

VALVE (BEHIND)

14. NO. 2 ACTUATOR, LEFT

HAND

15. INTERMEDIATE WHEEL

VALVE

1

2

3

4

6

7

10

8

9

11

12

13

5

14

15

16

17

20

21

18

15

17

22

23

24

25

8

26

27

19