Fleetwood V8-368 6.0L VIN 9 FI (1982)
Thermostat Housing: Technical Service Bulletins
Engine - Thermostat Adapter Kit
Bulletin No.T 84-36A File In Group 6A
Number
52
Date
June '84
SUBJECT:
SERVICE HT4100 LOWER THERMOSTAT HOUSING TO INTAKE MANIFOLD ADAPTER PIPE
MODELS AFFECTED: 1982-1984 DEVILLES, BROUGHAMS, ELDORADOS AND SEVILLES
FIGURE 1 - Thermostat Housing Assembly
This bulletin supersedes Serviceman Bulletin 84-36, Group 6A, which should be destroyed.
A new thermostat adapter pipe kit (P/N 1628921) has been released for servicing the HT4100 engine. This kit, as illustrated in Figure 1, contains one
adapter pipe, one washer, one clip, and two "O" rings; and will: (1) provide an easier procedure for replacing a leaking adapter pipe and/or "O" ring;
and, (2) aid in the installation of the intake manifold in repairs when the water pump is not removed.
When replacing the adapter pipe to correct a coolant leak, follow steps 1 through 16 as listed below.
When installing the adapter to aid in installation of the intake manifold, follow steps 8 through 16 as listed below.
Thermostat Adapter Replacement Procedure
1.
Drain coolant to below thermostat level.
2.
Remove thermostat.
3.
Remove engine water temperature sensor.
4.
Remove vacuum hose from vacuum pump and move aside.
5.
Remove A/C compressor front adjustment brace from the lower thermostat housing.
6.
Cut adaptor pipe between intake manifold and thermostat housing into two pieces.
7.
Remove lower thermostat housing.
8.
Clean manifold "O" ring seat.
9.
Clean thermostat housing "O" ring seats.
