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 TM 5-1940-277-20
TM 1940-20/2
INSTALL:
NOTE
This procedure covers three different types of thermostats used
on different engines. Steps one through ten apply to the MK1 and
MK2 w/Sabre engine. Steps eleven through eighteen apply to the
MK2 w/Cummins engine.
1.
Clean mating surfaces of outlet and inlet thermostat housings and apply silicone sealant
(Item 3, App. C).
2.
Install gasket (14) on inlet thermostat housing (10) and O-ring (12) on outlet housing (13).
3.
Install new thermostat element (11). Make sure element is firmly seated in inlet thermostat
housing (10).
4.
Align bolt holes in inlet and outlet thermostat housings. On MK2, aline holes of mounting
bracket (7) with holes in thermostat housings. Install washers (9) and bolts (8).
5.
Tighten bolts using wrench.
6.
Install thermostat housing assembly (4).
7.
Connect three hoses and hose clamps (1,2 and 3).
8.
Tighten hose clamps (1,2 and 3) using screwdriver.
9.
On MK2 w/Sabre, secure thermostat mounting bracket (7) to engine with washer (6) and bolt (5).
Tighten using socket.
10.
Refill fresh water cooling system on MK1 (refer to paragraph 3-68). Refill primary and secondary
pooling systems on MK2 (refer to paragraph 3-69).
NOTE
Step eleven through eighteen apply to the MK2 w/Cummins
engine.
11.
Install engine lifting bracket (19), new O-ring (18), thermostat (17), and thermostat housing (16) on
engine (20) with three screws (15).
12.
Tighten screws (15).
13.
Install alternator (refer to paragraph 3-92.1).
14.
Install drivebelt (refer to paragraph 3-119.1).
15.
Fill engine cooling system with antifreeze (refer to paragraph 3-69.1).
16.
Install battery ground cable (refer to paragraph 3-90).
17.
Start engine and check for coolant leaks (TM 5-1940-322-10).
18.
Close and secure engine hatches (TM 5-1940-322-10).
3-160.1
Change 2
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