Lexus SC300 / Lexus SC400. Service manual — part 641

OIL PUMP

COMPONENTS FOR REMOVAL AND
INSTALLATION

LU–8

–

LUBRICATION SYSTEM

Oil Pump

REMOVAL OF OIL PUMP

(See Components on page

LU–8

)

HINT: When repairing the oil pump, the oil pan and strainer
should be removed and cleaned.

1.

REMOVE ENGINE WITH TRANSMISSION
(See pages

EM–118

to 128)

2.

SEPARATE ENGINE AND TRANSMISSION
(See pages

EM–129

to 130)

3.

INSTALL ENGINE TO ENGINE STAND FOR REMOVAL

4.

REMOVE TIMING BELT
(See steps 8 to 35 on pages

EM–36

to 43)

5. REMOVE NO.2 IDLER PULLEY, NO.1 IDLER PULLEY

AND CRANKSHAFT TIMING PULLEY
(See steps 36 to 38 on page

EM–44

)

6.

REMOVE OIL DIPSTICK AND GUIDE
(a) Remove the mounting bolt.
(b) Pull out the dipstick guide together with dipstick guide.
(c) Remove the O–ring from the dipstick guide.

7. REMOVE BRACKET OF MAIN OXYGEN SENSOR

CONNECTOR FROM NO.1 OIL PAN
Remove the bolt, and disconnect the connector bracket.

8.

REMOVE OIL LEVEL SENSOR
(a) Disconnect the level sensor connector.
(b) Remove the four mounting bolts, and disconnect the

engine wire bracket.

(c) Remove the level sensor.
(d) Remove the gasket from the level sensor.

9.

REMOVE NO.2 OIL PAN
(a) Remove the twelve mounting bolts and two nuts.

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LUBRICATION SYSTEM

Oil Pump

LU–9

(b) Insert the blade of SST between the No.1 and No.2 oil

pan, cut off applied sealer and remove the No.1 oil pan.

SST 09032–00100
NOTICE:

•

Be careful not to damage the No.2 oil pan contact surface

of the No.1 oil pan.

•

Be careful not to damage the oil pan flange.

10. REMOVE OIL PAN BAFFLE PLATE

Remove the six bolts, two nuts and baffle plate.

11. REMOVE NO.1 OIL PAN

(a) Remove the sixteen mounting bolts and two nuts.

(b) Remove the No.1 oil pan by prying the portions (A)

between the cylinder block and No.1 oil pan with a
screwdriver.

NOTICE: Be careful not to damage the contact surfaces
of the cylinder block and No.1 oil pan.

LU–10

–

LUBRICATION SYSTEM

Oil Pump

12. REMOVE OIL STRAINER

Remove the two bolts, two nuts, oil strainer and gasket.

13. REMOVE OIL FILTER BRACKET

(a) Disconnect the oil pressure switch connector.
(b) Remove the two bolts, stud bolt, the filter bracket and oil

filter assembly.

(c) Remove the gasket from the filter bracket.

14. REMOVE ENGINE SPEED SENSOR

(a) Disconnect the speed sensor connector.
(b) Remove the bolt and speed sensor.

15. REMOVE OIL PUMP

(a) Remove the eight mounting bolts.

(b) Remove

the oil pump by prying the portions between the

cylinder block and oil pump with a screwdriver.

NOTICE: Be careful not to damage the contact surfaces
of the cylinder block and oil pump.
(c) Remove the O–ring from the cylinder block.

–

LUBRICATION SYSTEM

Oil Pump

LU–11