C 10 1/2 Ton Pickup 2WD V8-379 6.2L DSL VIN C FI (1982)
Diesel MFI Pump: All Technical Service Bulletins
Diesel Engine - California Engine Timing
Number:
83-I-40
Section:
VI
Date:
FEB., 1983
Subject:
6.2L DIESEL CALIFORNIA ENGINE TIMING - 1982-83 "C-K" WITH 6.2L CALIFORNIA ONLY LIGHT DUTY LH6 ENGINE
ONLY
TO:
ALL CHEVROLET DEALERS
Any service on the 6.2L Light Duty Diesel Engine (built to California specifications) which necessitates removal or replacement of the
injection pump, requires a different static timing procedure.
Light Duty engines built to California specifications have been timed with a microwave process. After timing with the microwave, an
additional mark "O" is stamped over the pump flange/housing interface.
When viewing the California timed engine, the two (2) timing marks (as on Federal engines) will be visible. These may or may not be
lined up. In addition, an "O" will be visible, stamped on the flange interface. The "O" should be round. Any deviation of the timing will
result in two
(2)
half circles not matching.
If a pump is removed for service and is replaced on the same engine, be sure to match the "O" for correct timing setting.
If a new pump or a pump that was not previously on the engine is installed, do not use any "O" marks. Instead, use the normal timing
marks and align according to the information which is detailed in Service Bulletin 82-T-79.
