Date: May 7, 2003
Order No.: P-B-20.10/23
Supersedes:
Group: 20
2000 Mercedes Benz CLK 320 (208.365) V6-3.2L (112.940) Page 100
SUBJECT:
All Models with 112 or 113 Engine
Water Pump Leaking
If you receive customer reports of the water pump leaking on any 112 or 113 engine vehicle, replace the water pump only if it is clearly visible that
coolant drips continuously from the vent hole.
Traces of coolant residue and wetness (formation of droplets) at the vent hole of the water pump are normal and therefore are not considered
"leakage". Water pump replacements under such conditions are therefore not justified.
A small amount of coolant in the groove of the pump seal is required for lubrication of the pump. Coolant droplets forming at the vent hole dry up
and leave a distinct residue due to the high content of solid matter in the coolant (6g/100cc). This is particularly obvious on vehicles used for short
distance driving with the engine being started and stopped frequently.
Water pumps returned for leaking coolant will be checked very carefully and warranty claims might be debited if a pump is found to be in acceptable
working order.
Parts Information
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