TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Coolant Thermostat (008-013)
Section 8 - Cooling System - Group 08
Page 8-11
With the jiggle pins sealing the openings, the flow to the
radiator is controlled by the thermostat opening in response
to the engine coolant temperature.
Preparatory (008-013-000)
Drain the coolant. Refer to Procedure 008-018.
Disconnect the upper radiator hose. Refer to Pro-
cedure 008-045.
Remove (008-013-002)
13 mm, 16 mm
Remove the alternator mounting capscrew, loosen the al-
ternator link capscrew, and lower the alternator.
Refer to Procedure 013-001.
10 mm
Remove three capscrews, the thermostat housing, lifting
bracket, thermostat, and thermostat seal.
L-1067