420SEL (126.035) V8-4.2L (116.965) (1986)
Heater Core: Service and Repair
Without A/C
Removal
1
Remove heater unit
2
Remove clamps (see arrow) on cover (6) for air outlet center with a screwdriver and lift off cover (46) of heater unit.
3
Remove rubber seal (47) at water pipes.
4
Detach Bowden cable (48) for leg room flaps and open legroom flaps.