T H E R M O S T A T , W A T E R O U T L E T , A N D C R O S S O V E R P I P E H O U S I NG
This task covers:
Both battery negative cables disconnected.
One thermostat gasket
(See paragraph 4-38)
Two crossover pipe gaskets
Cooling system drained.
One tie-down strap
(See paragraph 3-30)
(Item 44, Appendix C)
Antiseize tape (Item 46, Appendix C)
are 2 types of crossover pipes: standard crossover pipe (15)
has seatings for 2 nipples (5 and 7) and crossover pipe (6) on
trucks equipped with winterization kits which has a third nipple (12)
seated at a 90° angle.
If removing thermostat assembly (11) and water outlet (10), perform
steps 1 and 2.
Remove clamp (20) and radiator inlet hose (19) from water outlet (10).
Remove 2 bolts (9) at water outlet (10). Remove water outlet and gasket (8). Remove
thermostat assembly (11). Discard gasket.
Loosen right alternator belt (see
paragraph 4-2 or 4-3) and move
alternator to side.