RAM 3500 Truck 2WD L6-359 5.9L DSL Turbo VIN D FI (1998)
Fuel Supply Line: All Technical Service Bulletins
High Pressure Fuel Line - Service Precautions
NO: 14-01-98
GROUP: Vehicle Performance
DATE: Mar. 6, 1998
SUBJECT:
High Pressure Fuel Line Service
MODELS:
1998 (BR/BE) Ram Truck
NOTE:
THIS INFORMATION APPLIES TO THE 5.9L CUMMINS ELECTRONICALLY INJECTED 24 VALVE ENCORE DIESEL.
DISCUSSION:
It has been found that the interference fit between the high pressure fuel line and injector connector tube will only seal properly the first time it is torqued
to specification (Figure 1). Whenever any of these high pressure fittings are disconnected, the connector p/n 5011422AA and "O" ring p/n 05011885AA
will require replacement to prevent a high pressure fuel leak.
The torque for these connections is 40 N.m (30 ft. lbs.). Using a higher torque than specified will cause damage to the injector or connector tube. If the
injector or connector tube is damage/deformed, a high pressure fuel leak will result inside the cylinder head. This leak will cause an engine miss and low
power.
POLICY: Information Only
