Cherokee 2WD L4-126 2.1L DSL Turbo VIN B FI (1986)
Oil Cooler: Technical Service Bulletins
Oil Cooler - Vibration/Noise
38E354
1985 - 1987 CHEROKEE/ WAGONEER MODELS WITH 2.1L TURBO-DIESEL
SEPTEMBER 1987
ENGINE
Attention: Workshop, Parts Department
OIL COOLER NOISE
Some 1985-87 Cherokee-Wagoneer models with 2.1L turbo-diesel engine may have an audible vibration between 1700 and 2000 RPM. This noise may
be caused by the engine oil cooler assembly. New flexible oil cooler lines and a new by-pass valve check ball assembly entered production starting with
VIN 1JXXXXXXXXX105643.
Service correction involves replacing the oil cooler lines and the check ball as described in the following procedure.
PROCEDURE
Removal
1.
Raise the hood.
2.
Disconnect the battery negative cable.
FIGURE 1
3.
Remove hose (A-Fig. 1) from the air cleaner and turbocharger. Remove hose (B-Fig. 1) from intake manifold and intercooler.
