POWER STEERING OIL PUMP DISASSEMBLY/ASSEMBLY [WLT-1, WLT-2, WL-3, WL-C, WE-C]

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Note

•  The following procedure is for replacement of the O‐ring and oil seal only. Replace the pump component if other repairs are necessary.

1.  Disassemble in the order indicated in the table.

2.  Assemble in the reverse order of disassembly.

3.  After installing the P/S pump. flush the power steering system according to the following procedures.

(1)  Add ATF until it reaches the MAX level of the P/S fluid tank.

(2)  Start the engine and turn the steering wheel fully to the left and right several times to circulate the ATF.

•  If the fluid level is dropped. add ATF

(3)  Drain the ATF.

(4)  Add the new ATF to the MAX level of the P/S fluid tank, and repeat Step (1) and (2) a few times.

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1	Stud (See Stud Disassembly Note.) (See Stud Assembly Note.)
2	Power steering oil pump component (See Power Steering Oil Pump Component Disassembly Note.)
3	Suction pipe
4	O‐ring
5	Connector
6	O‐ring
7	Control valve
8	Spring
9	Rear pump body (See Rear Pump Body Assembly Note.)
10	O‐ring
11	Cam ring (See Rotor, Cam Ring, Vane, Assembly Note.)
12	Rotor (See Rotor, Cam Ring, Vane, Assembly Note.)
13	Vane (See Rotor, Cam Ring, Vane, Assembly Note.)
14	Side plate (See Side Plate Assembly Note.)
15	O‐rings
16	Front pump body
17	Gear shaft component (See Gear Shaft Component Disassembly Note.) (See Gear Shaft Component Assembly Note.)
18	Oil seal (See Oil Seal Disassembly Note.) (See Oil Seal Assembly Note.)

Stud Disassembly Note

1.  Tighten 2 nuts against each other on the stud, and then remove it.

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Power Steering Oil Pump Component Disassembly Note

1.  Secure the power pressure oil pump using the SST.

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Caution

•  Use the SST to prevent damage to the pump when securing it in a vise.

Gear Shaft Component Disassembly Note

1.  Remove the snap ring to front body shown in the figure.

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2.  Tap the gear shaft from the shaft side using a plastic hammer to remove it.

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Oil Seal Disassembly Note

1.  Tap the oil seal out using a flathead screwdriver.

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Caution

•  To prevent damaging the power steering oil pump body when tapping it out, wrap a clean rag on the end of the flathead screwdriver. If the power steering oil pump body is damaged, replace it together with the power steering oil pump component.

Oil Seal Assembly Note

1.  Press fit the oil seal using a proper pipe.

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Caution

•  Install it so that the side with narrow groove points outwards.

Gear Shaft Component Assembly Note

1.  Set a proper pipe into the gear depression and press fit the gear shaft.

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2.  Install the snap ring to front body shown in the figure.

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Side Plate Assembly Note

1.  Install the side plate in the front pump body shown in the figure

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Rotor, Cam Ring, Vane, Assembly Note

1.  Install the rotor in the front pump body shown in the figure.

2.  Install the cam ring in the front pump body shown in the figure.

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3.  Install the vane in the rotor.

Rear Pump Body Assembly Note

1.  Install a new O-ring and the side plate to the front body.

2.  Position the side plate using the rear pump body.

3.  Install the rear body to the rear pump body.

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Stud Assembly Note

1.  Tighten 2 nuts against each other on the stud, and then install it so that the stud projection is within the following specification.

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