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 835 of 926
TM 9-2320-283-20-1
COOLING SYSTEM.
3-59.
THERMOSTAT AND THERMOSTAT HOUSING REPLACEMENT (Continued).
LOCATION/ITEM
ACTION
REMARKS
B.
DISASSEMBLY (Continued).
8.
Seal (4)
Pry out of item (5)
Be careful not to damage
item (5) Discard item
(4).
9.
Two screws (8),
Remove from item (5)
Discard item (6).
connection (7),
and gasket (6).
10.
Nipple (14)
Remove from item (5).
C.
CLEANING AND INSPECTION.
11.
All parts
Clean and inspect
Refer to paragraph 3-4
and 3-5 Be sure to
clean all gasket
material off items (1),
(5), and (7).
D.
TESTING.
12.
Thermostat (3)
a.
Check that it is closed at
Replace item (3) if it
room temperature
is open at room tempera-
ture.
b.
Put item (3) and a ther-
Use a device to hold
mometer into a suitable
item (3) and thermom-
container of water
eter so that they do
not touch the container.
c.
Heat the water and observe
Replace item (3) if it
item (3)
does not begin to open
at 180°F.
d.
Continue to heat the
Item (3) must be fully
water until thermostat
open at this tempera-
reads 195'-200'F
ture.
Replace item (3)
if there is not at least
a 0.375 inch space be-
tween seal sleeve and
the brass part of item
(3).
3-318
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