SkyTrak 8042 Service Manual - Manual (Page 333)

Engine: Cummins 4BT3.9 and 4BTA3.9
7A.10 Model 8042, 10042, 10054 Legacy Rev. 10/03
Note: Drain approximately two quarts (2 liters) of
coolant.
5. Slowly turn the radiator cap (1) to the first stop and
allow any pressure to escape. Remove the radiator
cap. Place a funnel at the base of the radiator to
channel the drained coolant into a container. Open
the radiator petcock (2), and allow the coolant to
drain into the funnel. Transfer the coolant into a
properly labeled container. Dispose of properly. Close
the radiator petcock.
6. This engine is equipped with an automatic belt
tensioner pulley (3). Insert a 1/2" drive ratchet into
the square hole (4) in the tensioner housing, and
remove the tension from fan belt (5).
7. While lifting the automatic belt tensioner pulley (3)
away from the belt, remove the fan drive belt (5).
8. Loosen the lower alternator bracket capscrew (6) on
the bottom of the alternator (7). Remove the upper
alternator mounting capscrew (8), and lower the
alternator.
9. Remove the three capscrews (9) securing the
thermostat housing (10) to the engine.
MH4230
1
2
MT1840
3
4
5
MA61902
6
7
8