TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 773 of 926
TM 9-2320-283-20-1
COOLING SYSTEM.
3-52.
COOLING SYSTEM SERVICE (Continued).
LOCATION/ITEM
ACTION
REMARKS
D.
SIGHT GLASS REPLACEMENT.
10.
Sight glass (14).
Unscrew from item (3).
11.
0-ring (1).
Remove from item (14).
Discard item (1).
12.
Sight glass (14).
Clean and inspect.
Refer to paragraphs 3-4
and 3-5.
13.
New 0-ring (1).
Install on item (14).
14.
Sight glass (14).
Install in item (3).
E.
FILLING.
15.
Draincock (5).
Open.
16.
Radiator (3).
Add coolant until it over-
Refer to TM 750-254
flows out of item (5).
(Cooling Systems:
Tac-
tical Vehicles) for
proper antifreeze mix-
ture.
Never use more
than a 60 percent anti-
freeze solution.
Use
arctic antifreeze for
subzero temperatures.
17.
Draincock (5).
Close.
18.
Radiator (3).
Add coolant until item (1)
is filled.
F.
OPERATIONAL CHECKS.
19.
Engine.
Start.
20.
Cooling system.
Check for leaks.
Refer to TM 9-2320-283-
10.
Make sure heater
control valve is open.
3-256
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