300SDL (126.125) L6-3.0L DSL Turbo (603.961) (1987)
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.