Toyota Avalon (XX50): Oil Pump

*1

CLUTCH DRUM OIL SEAL RING

*2

FRONT OIL PUMP BODY

*3

FRONT OIL PUMP DRIVE GEAR

*4

FRONT OIL PUMP DRIVEN GEAR

*5

OIL STRAINER ASSEMBLY

*6

RING PIN

*7

STATOR SHAFT ASSEMBLY

*8

FRONT OIL PUMP COVER SUB-ASSEMBLY

Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf)

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Non-reusable part

Toyota Genuine ATF WS

MP grease

(a) Remove the 4 clutch drum oil seal rings from the stator shaft assembly.

(a) Using a T30 "TORX" socket wrench, remove the 2 bolts and oil strainer assembly from the front oil pump cover sub-assembly.

(a) Remove the 5 bolts and stator shaft assembly from the front oil pump body.

(a) Remove the front oil pump drive gear from the front oil pump body.

(a) Remove the front oil pump driven gear from the front oil pump body.

(a) Remove the front oil pump body from the front oil pump cover sub-assembly.

(a) Remove the 2 ring pins from the front oil pump cover sub-assembly.

(a) Install the oil pump drive shaft sub-assembly to the front oil pump assembly.

NOTICE:

• To avoid damaging the bush of the front oil pump assembly, install the oil pump drive shaft sub-assembly perpendicularly relative to the front oil pump assembly.
• Align the cutout of the oil pump drive shaft sub-assembly and the cutout of the front oil pump drive gear, and install the parts.

(a) Using a caliper gauge, measure the inside diameter of the bushing of the stator shaft assembly (for torque converter assembly).

Standard Inside Diameter:

25.201 to 25.227 mm (0.992 to 0.993 in.)

Maximum Inside Diameter:

25.227 mm (0.993 in.)

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

(b) Using a caliper gauge, measure the inside diameter of the bushing of the stator shaft assembly (for oil pump drive shaft sub-assembly).

Standard Inside Diameter:

12.020 to 12.035 mm (0.473 to 0.474 in.)

Maximum Inside Diameter:

12.035 mm (0.474 in.)

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

(a) Using a caliper gauge, measure the inside diameter of the bushing of the front oil pump cover sub-assembly.

Standard Inside Diameter:

8.02 to 8.035 mm (0.31575 to 0.31634 in.)

Maximum Inside Diameter:

8.035 mm (0.31634 in.)

If the inside diameter is more than the maximum, replace the front oil pump cover sub-assembly.

(a) Using a feeler gauge, measure the body clearance between the front oil pump driven gear and front oil pump body.

Standard Body Clearance:

0.135 to 0.175 mm (0.00531 to 0.00689 in.)

Maximum Body Clearance:

0.175 mm (0.00689 in.)

If the body clearance is more than the maximum, replace the front oil pump body and front oil pump driven gear.

(b) Using a straightedge and feeler gauge, measure the side clearance of both gears.

Standard Side Clearance:

0.015 to 0.034 mm (0.000591 to 0.00134 in.)

Maximum Side Clearance:

0.034 mm (0.00134 in.)

If the side clearance is more than the maximum, replace the front oil pump body, front oil pump drive gear, front oil pump driven gear and stator shaft assembly.

(a) Install the 2 ring pins to the front oil pump cover sub-assembly.

(a) Install the front oil pump body to the front oil pump cover sub-assembly.

(a) Coat the front oil pump driven gear with Toyota Genuine ATF WS and install it to the front oil pump body.

(a) Install the stator shaft assembly to the front oil pump body with the 5 bolts.

Torque:

9.1 N·m {93 kgf·cm, 81 in·lbf}

Bolt Length:

(a) Using a T30 "TORX" socket wrench, install a new oil strainer assembly to the front oil pump cover sub-assembly with the 2 bolts.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

(a) Apply a small amount of MP grease to the entire circumference of the clutch drum oil seal ring installation groove portion.

HINT:

By applying MP grease, the wobble within the clutch drum oil seal ring installation groove will be eliminated, preventing damage to the clutch drum oil seal ring at the time of front oil pump assembly installation.