1996 TOYOTA LAND CRUISER Workshop Manual

LU−4
−
LUBRICATION OIL PUMP
715
Author: Date:
1996 LAND CRUISER (RM451U)
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LU0KG−02
−
LUBRICATION OIL PUMP
LU−5
1996 LAND CRUISER (RM451U)
REMOVAL
HINT:
When repairing the oil pump, the oil pan and strainer should be
removed and cleaned.
1. DRAIN ENGINE OIL
2. REMOVE ENGINE UNDER COVER
3. DRAIN ENGINE COOLANT
4. REMOVE RADIATOR (See page CO−14 )
5. DISCONNECT A/C COMPRESSOR AND BRACKET
(a) Loosen the idler pulley nut and adjusting bolt, and remove
the drive belt.
(b) Remove the 4 mounting bolts, and disconnect the com- pressor from the bracket.
HINT:
Put aside the compressor, and suspend it.
(c) Remove the 5 bolts and A/C compressor bracket.
6. REMOVE RADIATOR PIPE
(a) Disconnect the No.2 radiator hose from the water inlet.
(b) Remove the 2 nuts and radiator pipe.
7. REMOVE WATER PUMP
Remove the 4 bolts, 2 nuts, water pump and gasket.
8. REMOVE CYLINDER HEAD (See page EM−28 )
9. DISCONNECT OIL COOLER PIPE BRACKET FROM NO.1 OIL PAN
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LU−6
−
LUBRICATION OIL PUMP
1996 LAND CRUISER (RM451U)
10. REMOVE OIL LEVEL SENSOR
(a) Remove the 4 bolts and level sensor.
(b) Remove the gasket from the level sensor.
11. REMOVE BOLTS HOLDING NO.1 OIL PAN TO TRANS-
MISSION HOUSING
Remove the 6 bolts.
12. REMOVE NO.2 OIL PAN
(a) Remove the 17 mounting bolts and 2 nuts.
(b) Insert the blade of SST between the No.1 and No.2 oil pans, cut off applied sealer and remove the No.2 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.
13. REMOVE NO.1 OIL PAN
(a) Remove the 21 mounting bolts and 2 nuts.
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P22576
−
LUBRICATION OIL PUMP
LU−7
1996 LAND CRUISER (RM451U)
(b) Remove the No.1 oil pan by prying the portions (A) be-
tween the cylinder block and No.1 oil pan with a screw-
driver.
NOTICE:
Be careful not to damage the contact surfaces of the cylin-
der block and No.1 oil pan.
14. REMOVE OIL PAN BAFFLE PLATE
Remove the bolt, 7 nuts and baffle plate.
15. REMOVE OIL STRAINER
Remove the bolt, 2 nuts, oil strainer and gasket.
16. REMOVE CRANKSHAFT PULLEY (See page EM−13 )
17. REMOVE DRIVE BELT IDLER PULLEY
Remove the bolt and idler pulley.
18. REMOVE OIL PUMP (TIMING CHAIN COVER) (See page EM−13 )
19. REMOVE TIMING CHAIN AND CAMSHAFT TIMING GEAR
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LU08R−03
LU−8
−
LUBRICATION OIL PUMP
1996 LAND CRUISER (RM451U)
DISASSEMBLY
1. REMOVE DRIVE AND DRIVEN ROTORS
Remove the 7 screws, pump cover, drive rotor, driven rotor and
gasket.
HINT:
At the time of installation, place a new gasket on the pump body.
2. REMOVE RELIEF VALVE
Remove the plug, gasket, spring and relief valve. Torque: 49 N·m (500 kgf·cm, 36 ft·lbf)
HINT:
At the time of installation, install a new gasket to the plug.
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Version 1.11 - 03/16/2010

LU0KH−01
−
LUBRICATION OIL PUMP
LU−9
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT RELIEF VALVE
Coat the valve with engine oil and check that it falls smoothly
into the valve hole by its own weight.
If it does not, replace the relief valve. If necessary, replace the
oil pump assembly.
2. INSPECT ROTOR BODY CLEARANCE
Using a thickness gauge, measure the clearance between the
driven rotor and body.
Standard body clearance:
0.100 − 0.170 mm (0.0039 − 0.0067 in.)
Maximum body clearance:
0.30 mm (0.0118 in.)
If the body clearance is greater than maximum, replace the ro-
tors as a set. If necessary, replace the oil pump assembly.
3. INSPECT ROTOR SIDE CLEARANCE
Using a thickness gauge and precision straight edge, measure
the clearance between the rotors and precision straight edge. Standard side clearance:
0.030 − 0.090 mm (0.0012 − 0.0035 in.)
Maximum side clearance:
0.15 mm (0.0059 in.)
If the side clearance is greater than maximum, replace the ro-
tors as a set. If necessary, replace the oil pump assembly.
4. INSPECT ROTOR TIP CLEARANCE
Using a thickness gauge, measure the clearance between the
drive and driven rotor tips. Standard tip clearance:
0.030 − 0.160 mm (0.0012 − 0.0063 in.)
Maximum tip clearance:
0.25 mm (0.0098 in.)
If the tip clearance is greater than maximum, replace the rotors
as a set.
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LU08T−03
LU−10
−
LUBRICATION OIL PUMP
1996 LAND CRUISER (RM451U)
REPLACEMENT
REPLACE CRANKSHAFT FRONT OIL SEAL (See page EM−99)
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LU0KJ−01
−
LUBRICATION OIL PUMP
LU−11
1996 LAND CRUISER (RM451U)
REASSEMBLY
Reassembly is in the reverse order of disassembly (See page LU−8 ).
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Version 1.11 - 03/16/2010