Impulse L4-2254cc 2.3L SOHC (1988)
Crankshaft Main Bearing Seal: Technical Service Bulletins
Crankshaft Rear Oil Seal - Leakage Diagnosis
BULLETIN NUMBER
SB92-01-002
ISSUE DATE
March 26, 1992
GROUP
ENGINE
REAR OIL SEAL LEAKAGE
AFFECTED VEHICLES
All Isuzu models.
SERVICE INFORMATION
Diagnosing engine oil leakage requires careful detection of the exact source of the leak. A "Crankshaft Seal Leak Diagnosis and Installation Procedure"
job aid, provided by Federal-Mogul. It describes procedures for diagnosing engine oil leaks and replacing the rear crankshaft oil seal. To ensure proper
diagnosis, these procedures should be followed to determine crankshaft seal effectiveness.
DIAGNOSIS ENGINE OIL LEAK
