TM-9-2320-260-34-2

TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME 2 OF 2

JULY 1994

TM-9-2320-260-34-2 - Page 730 of 863

TM 9-2320-260-34-2

17-12. ENGINE COOLANT HEATER TESTING (Contd)

NOTE

Coolant container must be vented and raised above the test

apparatus in order for thermosyphon circulation to occur.

Fuel pump, fuel filter, heater, wiring harness, fuel tubing,

control box, and coolant must be the same type used on vehicle.

1.

2.

3.

4.

5.

6.

7.

8.

9.

KEY TO TEST EQUIPMENT ARRANGEMENT

Electric fuel pump

10. Coolant inlet hose

Fuel tubing

11. Power source lead

Fuel filter

12. 24-volt DC power source

Fuel flowmeter

13. Multimeter

Fuel shutoff valve

14. Coolant

Coolant outlet hose

15. Wiring harness

Thermometer

16. Control box

Coolant container

17.

Fuel container

Coolant shutoff valve

17-29