Fluid Pump: Service and Repair

DISASSEMBLY





1. CHECK PUMP DRIVE GEAR ROTATION
Turn the drive gear with 2 screwdrivers, and make sure it rotates smoothly.

NOTICE: Be careful not to damage the oil seal lip.





2. REMOVE 2 OIL SEAL RINGS

NOTICE:
^ Be careful not to damage the oil seal ring.
^ This prevents the oil seal ring from being deformed.





3. REMOVE STATOR SHAFT
Using a torx socket T30, remove the 1 bolts and stator shaft.
Keep the gears in assembling order.





4. REMOVE OIL PUMP DRIVE GEAR AND DRIVEN GEAR





5. REMOVE OIL SEAL
a. Mount oil pump in a soft jaw vise.
b. Using SST, remove oil seal from the oil pump body.
SST 09308-00010

INSPECTION





1. CHECK BODY CLEARANCE OF DRIVEN GEAR
Push the driven gear to one side of the body. Using a feeler gauge, measure the clearance.
Standard body clearance: 0.100 - 0.170 mm (0.00394 - 0.00669 inch)
Maximum body clearance: 0.100 mm (0.0067 inch)
If the body clearance is greater than the maximum, replace the oil pump body sub-assembly.





2. CHECK TIP CLEARANCE OF DRIVEN GEAR
Measure the tip clearance between the driven gear teeth and drive gear teeth.
Standard tip clearance: 0.070 - 0.150 mm (0.00276 - 0.00591 inch)
Maximum tip clearance: 0.100 mm (0.0059 inch)
If the tip clearance is greater than the maximum, replace the oil pump body sub-assembly.





3. CHECK SIDE CLEARANCE OF BOTH GEAR
Using a steel straight edge and feeler gauge, measure the side clearance of both gears.
Standard side clearance: 0.02 - 0.05 mm (0.0008 - 0.0020 inch)
Maximum side clearance: 0.05 mm (0.0020 inch)





4. CHECK OIL PUMP BODY BUSHING
Using a dial indicator, measure the inside diameter of the oil pump body bushing.
Standard inside diameter: 38.11 - 38.14 mm (1.5004 - 1.501 inch)
Maximum inside diameter: 38.21 mm (1.5043 inch)
If the inside diameter is greater than the maximum, replace the oil pump body sub-assembly.





5. CHECK STATOR SHAFT BUSHING
Using a dial indicator, measure the inside diameter of the stator shaft bushings.
Standard inside diameter: 21.50 - 21.52 mm (0.8465 - 0.8472 inch)
Maximum inside diameter: 21.57 (0.8492 inch)
If the inside diameter is greater than the maximum, replace the stator shaft.

REASSEMBLY





1. INSTALL OIL SEAL
a. Using SST, install a new oil seal to the oil pump.
SST 09309-37010

HINT: The seal end should be flush with the outer edge of the oil pump.

b. Coat the lip of the oil seal with petroleum jelly.





2. INSTALL OIL PUMP DRIVE GEAR AND DRIVEN GEAR





3. INSTALL STATOR SHAFT
a. Set the stator shaft by aligning each bolt hole.
b. Using a torx socket T30, install the 1 bolts.
Torque: 9.8 Nm (100 kgf-cm, 7 inch lbs.)





4. INSTALL 2 OIL SEAL RINGS

NOTICE: Do not expand the ring ends excessively.





5. CHECK PUMP DRIVE GEAR ROTATION
Turn the drive gear with 2 screwdrivers and make sure it rotates smoothly.

NOTICE: Be careful not to damage the oil seal lip.