G 30 1 Ton Van V8-379 6.2L DSL VIN J FI (1984)
Positive Crankcase Ventilation Valve: Technical Service Bulletins
Engine - New Crankcase Depression Regulator Valve
Number:
85-178
Section:
6A
Date:
FEB., 1986
Subject:
CRANKCASE DEPRESSION REGULATOR VALVE, PART NUMBER 25095184
Model and Year: 1982-85 G VAN AND P MODELS 20-30 SERIES
W/6.2L DIESEL ENGINES
TO:
ALL CHEVROLET DEALERS
A new crankcase depression regulator (CDR) valve is now available which aids in condensate drainback to the engine crankcase. The
new CDR valve is designed so that the vent hose forms an angle towards the front of the engine.
This new valve, P/N 25095184, used in conjunction with the 1985 G and P model's oil fill cap, P/N 25060118, prevents oil loss due to
crankcase pressurization. The former valve and the vent hose could collect condensate and freeze at low ambient temperatures. This
could cause the crankcase to pressurize, and a subsequent loss of engine oil.
The new CDR valve is available from WDDGM. This valve is interchangeable with the former one and is installed in the same
location.