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
