Lexus RX300 (MCU15). Service manual - part 451

EM0BG–04

A14994

Knock Sensor Connector

Engine Wire Band

Engine Wire

Knock Sensor

Water Inlet Housing
(With Water Inlet)

No.2 Idler Pulley Bracket

Water Seal Plate

Engine Coolant
Drain Union

Oil Filter Union

Oil Filter

z Gasket

Water Pump

z Crankshaft
    Front Oil Seal

Crankshaft
Position Sensor
Connector

L Oil Pressure Switch

Oil Pressure Switch
Connector

A/C Compressor
Housing Bracket

No.1 Oil Pan

x 17

Oil Pump

z Gasket

z Gasket

Engine Wire

Alternator

Drain Plug

x 10

No. 2 Oil Pan

Oil Strainer

z Non–reusable part

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

Precoated part

L

8 (80, 69 in.·lbf)

8.0 (80, 69 in.·lbf)

10 mm Head 8 (80, 69 in.·lbf)
12 mm Head 19.5 (200, 14)

10 mm Head 8.0 (80, 69 in.·lbf)
12 mm Head 19.5 (200, 14)

45 (460, 33)

8.0 (80, 69 in.·lbf)

9.0 (90, 78 in.·lbf)

x 8

8.0 (80, 69 in.·lbf)

28 (290, 21)

L

18 (180, 13)

25 (250, 18)

39 (400, 29)

No. 2 Water 
Temperature 
Connector

z O–Ring

x 9

L Engine Coolant
    Drain Union

EM–88

–

ENGINE MECHANICAL

CYLINDER BLOCK

LEXUS RX300   (RM785E)

CYLINDER BLOCK

COMPONENTS

Z18551

No. 1 Piston Ring

Oil Ring (Expander)

Piston

z Snap Ring

Connecting Rod

Connecting Rod Bearing

Connecting Rod Cap

Oil Ring (Side Rail)

Piston Pin

No. 2 Piston Ring

z Snap Ring

z Connecting Rod Bushing

z Crankshaft
    Rear Oil Seal

z Seal Washer

Rear Oil Seal
Retainer

Cylinder Block

Upper Main Bearing

Upper Crankshaft
Thrust Washer

Crankshaft

Lower Crankshaft
Thrust Washer

Lower Main Bearing

Main Bearing Cap

z Seal Washer

z Non–reusable part

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

27 (275, 20)

x 6

See Page EM–108
1st   24.5 (250, 18)
2nd  Turn 90°

See Page EM–108
1st   22 (225, 16)
2nd  Turn 90°

8.0 (80, 69 in.·lbf)

–

ENGINE MECHANICAL

CYLINDER BLOCK

EM–89

LEXUS RX300   (RM785E)

EM1KU–01

A05415

A05251

A05252

P18761

P12389

SST

EM–90

–

ENGINE MECHANICAL

CYLINDER BLOCK

LEXUS RX300   (RM785E)

DISASSEMBLY

1.

REMOVE DRIVE PLATE

Remove the 8 bolts, rear plate, drive plate and front spacer.
2.

INSTALL ENGINE TO ENGINE STAND FOR
DISASSEMBLY

3.

REMOVE TIMING BELT AND PULLEYS
(See page EM–16)

4.

REMOVE CYLINDER HEAD
(See page EM–33)

5.

DISCONNECT CRANKSHAFT POSITION SENSOR
CONNECTOR

6.

DISCONNECT OIL PRESSURE SWITCH CONNECTOR

7.

REMOVE ALTERNATOR, ADJUSTING BAR AND
BRACKET ASSEMBLY

(a)

Disconnect the 2 wire clamps from the wire brackets.

(b)

Remove the 3 nuts, the alternator, adjusting bar and
bracket assembly.

8.

REMOVE OIL PRESSURE SWITCH
(See page LU–1)

9.

REMOVE A/C COMPRESSOR HOUSING BRACKET

Remove the 2 bolts and compressor housing bracket.

10.

REMOVE NO. 2 IDLER PULLEY BRACKET

Remove the 2 bolts and idler pulley bracket.

11.

REMOVE KNOCK SENSORS

(a)

Disconnect the 2 knock sensor connectors.

(b)

Using SST, remove the 2 knock sensors.
SST

09816–30010

A05253

P18763

Water
Seal
Plate

Oil Filter
Union

12 mm
Hexagon
Wrench

Coolant
Drain
Union

P12508

–

ENGINE MECHANICAL

CYLINDER BLOCK

EM–91

LEXUS RX300   (RM785E)

12.

REMOVE WATER INLET HOUSING

(a)

Remove the engine wire band.

(b)

Disconnect the engine wire clamp from the bracket.

(c)

Disconnect the No. 2 water temperature switch connec-
tor.

(d)

Disconnect the engine wire clamp from the water inlet.

(e)

Remove the 8 bolts, 2 nuts and water inlet housing.

13.

REMOVE WATER PUMP
(See page CO–7)

14.

REMOVE NO. 2 OIL PAN
(See page LU–10)

15.

REMOVE OIL STRAINER
(See page LU–10)

16.

REMOVE NO. 1 OIL PAN
(See page LU–10)

17.

REMOVE OIL PUMP
(See page LU–10)

18.

REMOVE OIL FILTER
(See page LU–3)

19.

REMOVE OIL FILTER UNION

Using a 12 mm hexagon wrench, remove the oil filter union.
20.

REMOVE WATER SEAL PLATE

Remove the 2 nuts and seal plate.
21.

REMOVE ENGINE COOLANT DRAIN UNION(S)

22.

REMOVE REAR OIL SEAL RETAINER

(a)

Remove the 6 bolts.

(b)

Using a screwdriver, remove the oil seal retainer by prying
the portions between the oil seal retainer and main bear-
ing cap.