Section 9
Inspection and Reconditioning
9.12
Closure Plate Assembly
Inspection
Inspect the oil seal in the closure plate and remove it if
it is worn or damaged. Refer to Install Closure Plate
Oil Seal in Section 10 for new oil seal installation.
Inspect the main bearing surface for wear or damage
(refer to Section 1, Specifications, Tolerances, and
Special Torque Values). Replace the bearing or closure
plate assembly if required.
Oil Pump Assembly
Disassembly
1. Remove the three hex flange screws securing the
oil pump housing including the relief valve
baffle, and the single screw with clamp for the
pickup tube. See Figure 9-13.
2. Remove the oil pump housing and pickup tube
from the closure plate.
3. Remove the oil pump gerotor gears from the
closure plate recess.
4. Remove the oil pickup by pulling it free from the
oil pump body.
5. The relief valve is a one-piece style, staked to the
oil pump housing; removal should not be
attempted, nor is internal servicing possible. If a
problem with the relief valve is encountered, the
oil pump should be replaced. See Figure 9-15.
Inspection
Inspect the oil pump housing, gerotor gears, and
closure plate recess for nicks, burrs, wear, or any
visible damage. Inspect the inlet seal for the pickup
tube in the housing. If any parts are worn or
damaged, replace the seal, oil pump or closure plate
as required.
Reassembly
1. Make sure the recess in the closure plate for the
oil pump gerotor gears is clean.
2. Lubricate the oil pump gerotor gears with grease
(Lubriplate
®
100 or equivalent), and install into
the recess. See Figure 9-14.
Figure 9-13. Removing Oil Pump.
Figure 9-14. Installing and Lubricating Oil Pump
Gerotor Gears.
3. Lightly lubricate with oil and install the inlet
seal into the oil pump housing until it is fully
seated. See Figure 9-15.
Figure 9-15. Installing Inlet Seal in Oil Pump
Housing.
Mounting
Screws
Relief
Valve
Baffle
Oil
Pump
Pickup
Tube
Inlet
Seal
Relief
Valve