K 30 1 Ton Pickup 4WD V8-379 6.2L DSL VIN J FI (1982)
Cylinder Head Gasket: Customer Interest
Engine - Head Gasket Coolant Leakage
Number:
82-T-126
Section:
VI
Date:
Nov., 1982
Subject:
6.2L DIESEL HEAD GASKET COOLANT LEAKAGE
TO:
ALL CHEVROLET DEALERS
To correct the early 1982 production head gasket coolant leakage condition, a new design head gasket entered production January 18, 1982.
For service, a revised service gasket is available.
Service
Part
Part Number
Cylinder Head Gasket
14061687
Cylinder Head Gasket Kit - Light
Duty (Code "C")
14063783
Cylinder Head Gasket Kit - Heavy
Duty (Code "J")
14063784
If a head gasket coolant leakage condition is encountered, check for the correct injection pump static timing setting as follows:
SERVICE INJECTION PUMP STATIC TIMING SETTING Any service on the 6.2L diesel engine which requires replacement of the injection pump
requires the static timing mark to be at the correct setting. During the 1982 model year, a change to the procedure for marking the pump was made.
Injection pumps built during
the first half of the 1982 model prior to the change, required the pump timing mark to be offset from the housing flange mark. To facilitate these setting,
a piece of tape was used which had offset lines. By lining up the tape lines, the correct setting was achieved. White tape was used on light duty engines
and yellow on heavy duty.