TM-9-2320-273-20

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE

NOVEMBER 1980

TM-9-2320-273-20 - Page 392 of 1500

TM 9-2320-273-20

COOLING SYSTEM.

4-50. HEATER CONTROL VALVE MAINTENANCE (Continued).

LOCATION/lTEM

ACTION

REMARKS

B. INSTALLATION.

4. Valve (6).

5. Heater tube (3) and

rubber hose (4).

a.

b.

a.

b.

Coat threads with

liquid teflon.

Screw into adapter

manifold (7).

Connect to valve (6).

Tighten clamps (5),

If you removed clamp

(1), put it back on and

tighten capscrew (2).

C. BLEEDING HEATER.

6.

7.

8.

9.

Cab/heater outlet hose.

Engine.

Cab/heater knob,

heater outlet hose.

Valve (6).

NOTE

Before removing outlet hose, place clean

container under heater openings to catch

coolant.

Loosen clamp and dis-

connect hose (para 11-27).

Start up (see TM 9-2320-

273-10).

a. Pull knob (see TM 9-

2320-273-10).

b. When coolant flows from

heater, push knob back in.

c. Immediately connect hose

to heater. Tighten clamp.

d. Pull knob out again.

a. With engine running, check

for leaks.

4-200