TM-5-3895-372-20

CONCRETE-MOBILE MIXER BODY M919, MODEL 8CM-24/F

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL

AUGUST 1980

TM-5-3895-372-20 - Page 494 of 694

TM 5-3895-372-20

HYDRAULIC SYSTEM.

10-10.

RELIEF VALVE ADJUSTMENT (Continued).

LOCATION/ITEM

ACTION

REMARKS

A TEST PRESSURE (Continued).

3.

Mixer-auger.

Hold with auger stop tool,

turn

slowly until wrench lodges

against side of trough.

Do not

allow auger to turn while you

test hydraulic pressure.

4.

Mixer body.

Start up and engage PTO.

(Re-

fer to TM 9-2320-273-10.)

5.

Hand throttle,

tachometer.

Adjust throttle until tacho-

Maintain this pump speed

meter reads 1250.

throughout test.

WARNING

Do not open valve quickly or wrench will be thrown free.

Turn valve slowly until completely open.

6.

Hydraulic control valve.

Open as if starting hydraulic

motor.

7.

Bypass valve.

Close slowly.

Continue until valve is com-

pletely closed.

8.

Pressure gage.

Read.

Pressure should be

a.

If pressure is correct,

go to

1900C2000 psi (13,10

Part C.

13,800 kPa).

b.

If pressure needs adjust-

ment,

go to Part B.

Do not lose copper gasket.

B.

ADJUSTMENT.

9.

Acorn nut (1) and

Remove.

copper gasket (3).

10. Jam nut (4).

Loosen.

11. Adjusting screw (2).

Turn until pressure reaches

Turn clockwise to increase

1950 (13,450 kPa).

pressure.

10-24