Lexus RX300 (MCU15). Service manual - part 578

AX0AK–05

D09204

N·m (kgf·cm, ft·lbf) : Specified torque

z Non–reusable part

z O–ring

Oil Pump Body

Oil Pump Driven Gear

z Oil Seal

Stator Shaft

x11

Oil Seal Ring

9.8 (100, 7)

Apply petroleum jelly

Oil Pump Drive Gear

–

AUTOMATIC TRANSAXLE

OIL PUMP

AX–55

U140F AX   (RM848E)

OIL PUMP

COMPONENTS

AX0AL–05

D03649

D03650

D03651

D09206

D03647

SST

AX–56

–

AUTOMATIC TRANSAXLE

OIL PUMP

U140F AX   (RM848E)

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

3.

REMOVE STATOR SHAFT

Using a torx socket T30, remove the 11 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

AX0AM–05

D03652

D09208

D03645

D03648

D03653

–

AUTOMATIC TRANSAXLE

OIL PUMP

AX–57

U140F AX   (RM848E)

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:
0.10 – 0.17 mm (0.0039 – 0.0066 in.)
Maximum body clearance: 0.17mm (0.0066 in.)

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
the drive gear teeth.

Standard tip clearance:
0.11 – 0.14 mm (0.0043 – 0.0055 in.)
Maximum tip clearance: 0.30 mm (0.0118 in.)

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 – 0.04 mm (0.0008 – 0.0016 in.)
Maximum side clearance: 0.05 mm (0.0020 in.)

4.

CHECK OIL PUMP BODY BUSHING

Using a dial indicator, measure the inside diameter of the oil
pump body bushing.

Standard inside diameter:
38.12 – 38.13 mm (1.5008 – 1.5012 in.)
Maximum inside diameter: 38.18 mm (1.5031 in.)

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 in.)
Maximum inside diameter: 21.57 (0.8492 in.)

If the inside diameter is greater than the maximum, replace the
stator shaft.

AX0AN–05

D03654

SST

D09206

D03651

D03655

D03649

AX–58

–

AUTOMATIC TRANSAXLE

OIL PUMP

U140F AX   (RM848E)

REASSEMBLY

1.

INSTALL OIL SEAL

(a)

Using SST and a hammer, install a new oil seal from oil
pump.
SST

09350–32014 (09351–32140)

HINT:
The seal end should be flat with the outer edge of the oil pump.
(b)

Coat the lip of oil seal with petroleum jelly.

2.

INSTALL OIL PUMP DRIVE GEAR AND DRIVEN GEAR

3.

INSTALL STATOR SHAFT

(a)

Align the stator shaft with each bolt hole.

(b)

Using a torx socket T30, install the 11 bolts.
Torque: 9.8 N·m (100 kgf·cm, 7 in.·lbf)

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.