S 65 AMG (220.179) V12-6.0L Turbo (275.981) (2006)
Auxiliary Cabin Heater Control Module: Service and Repair
AR83.70-P-5935C Remove/Install Control Module/Heat Exchanger Unit
- with CODE (228) Stationary heater
Remove
1
Remove burner element
2
Remove screws (1)
3
Disconnect burner housing (2) from the heat exchanger (4)
NOTE: The heat exchanger (4) and STH control module or heater booster (A6n1) form a unit.
4
Pull the vent hose (5) out of the vent drill hole (6) on the heat exchanger (4)
NOTE: If installed.
5
Remove sealing rings (3) from the heat exchanger (4) housing
6
Remove sealant from the heat exchanger (4) and the burner housing
Install
7
Insert sealing rings (3) into the seats on the heat exchanger (4) housing
NOTE: Use new seal rings.
8
Coat sealing surfaces on the heat exchanger (4) housing and on the burner housing (2) with sealant
9
Position burner housing (2) on heat exchanger (4) and insert screws (1)
CAUTION: Use new bolts. Coat the screw threads with locking compound.
10
Guide the vent hose (5) through the vent drill hole (6) into the heat exchanger (4).
NOTE: If present.
11
Tighten screws (1)
-
Stationary heater burner housing screw: 4 N.m
12
Remove sealant which has escaped from the area of the joint
13
Install burner element
14
Check emission level, adjust if necessary.