Injector Supply Lines (High Pressure) (006-051)
B3.9 and B5.9 Series Engines
Section 6 - Injectors and Fuel Lines - Group 06
Bosch In-Line Pump
Remove the pressure relief valve and sealing washer.
When using solvents, acids, or alkaline materials for
cleaning, follow the manufacturer's recommendations
for use. Wear goggles and protective clothing to avoid
Thoroughly flush the high-pressure relief valve with clean-
Do not use the center cap as a vent. This will cause
damage to the overflow valve.
10 mm, 19 mm
Install the high-pressure relief valve assembly in the re-
verse order of removal.
Injector Supply Lines (High Pressure)
The high-pressure lines must be clamped securely and
routed so they do not contact each other or any other
The high-pressure fuel lines are designed and manufac-
tured to deliver fuel at injection pressure to the injectors.
The high-pressure pulses will cause the lines to expand
and contract during the injection cycle.
Shown here are the high-pressure fuel lines for the
distributor-type injection pump.