Lexus SC300 / Lexus SC400. Manual - part 534

REPLACEMENT OF CRANKSHAFT
FRONT OIL SEAL

(See page 

EM–152

)

ASSEMBLY OF OIL PUMP

(See Components on page 

LU–12

)

1. 

INSTALL DRIVE AND DRIVEN ROTORS
(a) Place 

the drive and driven rotors into oil pump body with

the mark facing upward.

(b)  Install the pump body cover with the nine screws.

Torque: 10 N

⋅

m (105 kgf

⋅

cm, 8 ft

⋅

lbf)

2. 

INSTALL RELIEF VALVE
(a)  Insert the following parts into the oil pump body hole:

(1) Relief 

valve

(2) Compression 

spring

(3) Retainer

(b)  Using snap ring pliers, install the snap ring.

LU–14

–

LUBRICATION SYSTEM

Oil Pump

INSTALLATION OF OIL PUMP

(See Components on page 

LU–8

)

1. 

INSTALL OIL PUMP
(a)  Remove any old packing (FIPG) material and be careful

not to drop any oil on the contact surfaces of the oil
pump cylinder block.

•

Using a razor blade and gasket scraper, remove all
the old packing (FIPG) material from the gasket
surfaces and sealing groove.

•

Thoroughly clean all components to remove all the
loose material.

•

Using a non–residue solvent, clean both sealing
surfaces.

NOTICE: Do not use a solvent which will affect the
painted surfaces.
(b)  Apply seal packing to the oil pump as shown in the

illustration.

Seal packing: Part No. 08826–00080 or equivalent

•

Install a nozzle that has been cut to a 2–3 mm
(0.08–0.12 in.) opening.

HINT: Avoid applying an excessive amount to the surface. Be
particularly careful near oil passages.

•

Parts must be assembled within 5 minutes of
application. Otherwise the material must be
removed and reapplied.

•

Immediately remove nozzle from the tube and
reinstall cap.

(c)  Place a new gasket in position on the cylinder block.

(d)  Engage the spline teeth of the oil pump drive rotor with

the large teeth of the crankshaft, and slide the oil pump.

–

LUBRICATION SYSTEM

Oil Pump

LU–15

(e)  Install the oil pump with the eight bolts.

Torque:

12 mm head 16 N

⋅

m (160 kgf

⋅

cm, 12 ft

⋅

lbf)

14 mm head 30 N

⋅

m (310 kgf

⋅

cm, 22 ft

⋅

lbf)

HINT: Each bolt length is indicated in the illustration.
Bolt length:

A 50 mm (1.97 in.) for 12 mm head
B 106 mm (4.17 in.) for 12 mm head
C 30 mm (1.18 in.) for 12 mm head
D 40 mm (1.57 in.) for 14 mm head

2. 

INSTALL ENGINE SPEED SENSOR
(a)  Install the speed sensor with the bolt.

Torque: 6.4 N

⋅

m (65 kgf

⋅

cm, 56 in.

⋅

lbf)

(b)  Connect the speed sensor connector.

3. 

INSTALL OIL FILTER BRACKET
(a)  Place a new gasket in position on the oil filter bracket.

(b)  Install the oil filter bracket with the two bolts and stud

bolt.

Torque: 18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf)

(c)  Connect the oil pressure switch connector.

4. 

INSTALL OIL STRAINER
Install a new gasket and the oil strainer with the two bolts and
two nuts.

Torque: 7.8 N

⋅

m (80 kgf

⋅

cm, 69 in.

⋅

lbf)

LU–16

–

LUBRICATION SYSTEM

Oil Pump

5. 

INSTALL NO.1 OIL PAN
(a)  Remove any old packing (FIPG) material and be careful

not to drop any oil on the contact surfaces of the No.1
oil pan and cylinder block.

•

Using a razor blade and gasket scraper, remove all
the old packing (FIPG) material from the gasket
surfaces and sealing groove.

•

Thoroughly clean all components to remove all the
loose material.

•

Using a non–residue solvent, clean both sealing
surfaces.

NOTICE: Do not use a solvent which will affect the
painted surfaces.
(b)  Apply seal packing to the No.1 oil pan as shown in the

illustration.

Seal packing: Part No. 08826–00080 or equivalent

•

Install a nozzle that has been cut to a 2–3 mm
(0.08–0.12 in.) opening.

HINT: Avoid applying an excessive amount to the surface.

•

Parts must be assembled within 5 minutes of
application. Otherwise the material must be
removed and reapplied.

•

Immediately remove nozzle from the tube and
reinstall cap.

(c) Temporarily 

install the No.1 oil pan with the sixteen bolts

and two nuts.

HINT: Each bolt length is indicated in the illustration.
Bolt length:

A 20 mm (0.78 in.) for 10 mm head
B 35 mm (1.38 in.) for 10 mm head
C 55 mm (2.17 in.) for 12 mm head

(d)  Set the No.1 oil pan as shown in the illustration.
NOTICE: Make sure the clearance between the rear ends
of the oil pan and cylinder block is 0.2 mm (0.008 in.) or
less. If the clearance is more than 0.2 mm (0.008 in.), the
oil pan will be stretched.
(e)  Tighten the sixteen bolts and two nuts.

Torque:

10 mm head 7.8 N

⋅

m (80 kgf

⋅

cm, 69 in.

⋅

lbf)

12 mm head 18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf)

–

LUBRICATION SYSTEM

Oil Pump

LU–17