LUBRICATING OIL PUMP, OIL FILTERS & COOLER
If leakage Is found in areas "a" thru "c" of Step 9,
the pick-up pipe should be replaced with a pre-
If leakage is found in areas "d" or "e", remove
the assembly and investigate the cause. (i.e.
bad or missing gasket, manifold machine marks,
flaws in the seal surface or flat face nut).
NOTE: If the manifold sealing surface Is found
defective, replace the complete oil pick-up tube
Clean the Oil Filter Components as follows:
Discard filter elements.
Disassemble by-pass valve, plug and spring in
Wash all parts in diesel fuel.
Dry all parts with compressed air.
Inspect the 011 Filter Components as follows:
Visually inspect the inlet and outlet passages in
the filter base for restrictions.
Visually inspect the by-pass valve for wear or
damage. Replace if necessary.
Check by-pass valve spring using a valve spring
load testor. Free length of 52.71 mm (2.075 in.)
and a test length of 23.55 mm (0.927 in.) under
27.2 Nm (6.12 Ibf-ft) should be maintained.
Replace if necessary.
Clean the Oil Cooler as follows:
Immerse the cooler into a cleaning solvent such
as Stoddard or equivalent to loosen any sludge
on foreign matter.
NOTE: DO NOT use caustic solution of any kind.
Assemble and Install the Lubricating Oil Pump as
Press a new oil seal into the pump housing.
Refer to Section 7 for procedure.
Install a new seal washer (2, Fig. 7) with the
larger diameter facing out (toward pulley), onto
NOTE: New seal washer should also be Installed to
engines not equipped.
Install the pump as follows:
Install a new "O" ring (3, Fig. 6) into the
groove in the crankcase front cover; then
install the plate.
Install the inner and outer rotors onto the
Using the new "O" ring (4, Fig. 4) in the
groove in the housing (5), position the outer
rotor (6) in the housing and install the
housing onto the crankcase front cover.
Secure the housing to the cover.
Install the vibration damper as described in
NOTE: Inspect the wear sleeves on the damper hub
for wear or damage. Replace if necessary. Refer to
Section 7 for detailed information.
Assemble and Install the Lubricating Oil Filters as
Install the valve and spring into the bore of the
filter base. Install the plug and tighten to 50 lbs.
Using a new gasket, install the filter base onto
the crankcase. Secure in place with the
hardware previously removed.
Connect the Turbocharger oil-supply line to the
base (if equipped).
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