Engine Lubricating System
Page 9B-10
Base
Engine Components
DODGETurbo Diesel
The seal is designed to provide increased sealing as the
pump
case
pressure increases. Pressure forces the lip (1)
tighter
around the shaft.
A worn seal is more apt to leak during start up and shut down
when
case
pressure is low.
Caution: A worn seal can not be detected by pressurizing
the
pump
with
normal operating pressure. By Increasing
the pressure In the pump, the sealing force
will
also be
increased.
The bushing (2) in the Bosch VE
pump
can
cause
a
seal
leak.
If the bushing is loose in the housing it
will
move
toward
the
seal
raising the lip (1) and providing a leak
path
for fuel.
To check for such a leak (Bosch VE only), remove the
fuel
drain
manifold
connection (1) at the
pump
and install a plug
(2).
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