G 20 3/4 Ton Van V8-379 6.2L DSL VIN C FI (1984)
Positive Crankcase Ventilation Valve: Technical Service Bulletins
Crankcase Depression Regulator Valve - Revised
NUMBER:
86-B-34
GROUP:
6A - Diesel Engine
DATE:
January, 1986
SUBJECT:
CRANKCASE DEPRESSION REGULATOR VALVE, PART NUMBER 25095184
MODELS:
1982-1985 G, P-2, 3 WITH 6.2L DIESEL ENGINES
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.