TOYOTA CAMRY V20 1986 Service Information

4. JACK UP VEHICLE So THAT ALL FOUR WHEELS CAN
ROTATE
The wheels will be rotating fast, so make sure the vehicle is
firmly supported on stands.
7. PLACE WHEEL TO BE BALANCED ON WHEEL
BALANCER
Follow the procedure specified by the wheel balancer
manufacturer.
8. START ENGINE
9. PUT TRANSMISSION IN ºDº RANGE, THEN
GRADUALLY INCREASE SPEED TO TEST SPEED 6. MAKE SURE THAT BRAKES ARE NOT DRAGGING
ON ANY OF FOUR WHEELS 5. RELEASE PARKING BRAKE FULLY
± INTRODUCTIONPrecautions When Servicing Full±Time 4WD VehiclesIN±24

10. ROTATE WHEELS USING BOTH THE ENGINE'S
DRIVING FORCE AND DRIVING FORCE OF WHEEL
BALANCER AND CHECK WHEEL BALANCE
HINT:
1. When doing this be careful of the other wheel which will ro-
tate at the same time.
2. Completely the measurement quickly, within a short time.
11. AFTER FINISHING WHEEL BALANCING, RETURN
MODE SELECT LEVER TO ºFREE (NORMAL)º MODE
POSITION AND LOCK IT SECURELY WITH BOLT
12. SET CENTER DIFFERENTIAL CONTROL SWITCH TO
AUTO
± INTRODUCTIONPrecautions When Servicing Full±Time 4WD VehiclesIN±25

PRECAUTIONS WHEN TOWING
FULL±TIME 4WD VEHICLES
1. Use one of the methods shown below to tow the vehicle.
2. When there is trouble with the chassis and drivetrain, use
method [1] (flat bed truck) or method T (sling type tow
truck with doilies)
3. Recommended Methods: No. [1], [2], or [3]
Emergency Method: No. [4]
During towing with this towing method, there is a danger of the drivetrain
heating up and causing breakdown, or of the front wheels flying off the dolly.
HINT: Do not use any towing methods other than those shown above.
For example, the towing method shown below is dangerous, so do not use it
HINT: Do not tow the vehicle at a speed
faster than 18 mph (30 km/h) or a distance
greater than 50 miles (80 km). Free or
Lock
Center
Differential
Control
Switch
ºONº or
ªOFFªFree
(Normal
Driving)
No
Special
Operation
Necessary
Free
Center
Differential
Control
Switch
ªOFFº Free
Center
Differential
Control
Switch
ºOFFºMode
Select
Lever on
Transaxle T/M Shift
Lever
PositionT/M Shift
Lever
PositionCenter
Diff.
Control
Switch Automatic Transaxle Type of Transaxle
ºAUTOº
or
ºOFFº Manual Transaxle
Towing MethodParking
BrakeParking
Brake Center
Diff.
ºNº range ºNº range ºPº range
Released1 st Gear
Released
ReleasedApplied Applied
Release
Neutral NeutralºOFFº
ºOFFº
± INTRODUCTIONPrecautions When Servicing Full±Time 4WD VehiclesIN±26

JACK POSITION
Front . . . Center of engine mounting center member
Rear . . . . Jack up support of rear suspension member
PANTOGRAPH JACK POSITION
SUPPORT POSITION
Safety stand........................................................................
VEHICLE LIFT AND SUPPORT LOCATIONS
± INTRODUCTIONVehicle Lift and Support LocationsIN±27

ABBREVIATIONS USED IN THIS
MANUAL
A.B.S. Anti±Lock Brake System
A/C Air Conditioner
ALR Automatic Locking Retractor
Approx. Approximation
A/T, ATM Automatic Transaxle
ATF Automatic Transmission Fluid
B
0 Overdrive Brake
B
1 Second Coast Brake
B
2 Second Brake
B
3 First and Reverse Brake
BDC Bottom Dead Center
BTDC Before Top Dead Center
BVSV Bimetal Vacuum Switching Valve
C
0 Overdrive Clutch
C
1 Forward Clutch
C
2 Direct Clutch
CB Circuit Breaker
DP Dash Pot
CRS Child Restraint System
ECT Electronic Controlled Transaxle
ECU Electronic Controlled Unit
EFI Electronic Fuel Injection
E/G Engine
EGR Exhaust Gas Recirculation
ELR Emergency Locking Retractor
ESA Electronic Spark Advance
EVAP Evaporative (Emission Control)
EX Exhaust (manifold, valve)
Ex. Except
F
0 Overdrive One±Way Clutch
F
1 No. 1 One±Way Clutch
F
2 No. 2 One±Way Clutch
FIPG Formed in Place Gasket
FL Fusible Link
Fr Front
IG Ignition
IN Intake (manifold, valve)
ISC Idle Speed Control
LED Light Emitting Diode
LH Left±Hand
LSPV Load Sensing Proportioning Valve
Max. Maximum
Min. Minimum
MP Multipurpose
M/T, MTM Manual Transaxle
O/D, OD Overdrive
O/S Oversize
PCV Positive Crankcase Ventilation
PKB Parking Brake
± INTRODUCTIONAbbreviations Used in This ManualIN±28

LUBRICATION SYSTEM
± LUBRICATION SYSTEMLU±1

DESCRIPTION
A fully pressurized, fully filtered lubrication system has been adopted for this engine.
± LUBRICATION SYSTEMDescriptionLU±2

± LUBRICATION SYSTEMDescriptionLU±3

A pressure feeding lubrication system has been adopted to supply oil to the moving parts of this engine.
The lubrication system consists of an oil pan, oil pump, oil filter and other external parts which supply oil
to the moving parts in the engine block The oil circuit is shown in the illustration at the top of the pre-
vious page. Oil from the oil pan is pumped up by the oil pump. After it passes through the oil filter, it is
fed through the various oil holes in the crankshaft and cylinder block. After passing through the cylinder
block and performing its lubricating function, the oil is returned by gravity to the oil pan. A dipstick on the
center left side of the cylinder block is provided to check the oil level.
OIL PUMP
The oil pump pumps up oil from the oil pan and sends it under pressure to the various parts of the en-
gine.
An oil strainer is mounted in front of the inlet to the oil pump. The oil pump itself is a trochoid±type
pump, inside of which is a drive rotor and a driven rotor. 'When the drive rotor rotates, the driven rotor
rotates in the same direction, and since the axis of the driven rotor shaft is different from the center of
the driven rotor, the space between the two rotors is changed as they rotate. Oil is drawn in when the
space is wide and is discharged when the space in narrow.
OIL PRESSURE REGULATOR (RELIEF VALVE)
At high engine speeds, the engine oil supplied by the oil pump exceeds the capacity of the engine to
utilize it.
For that reason, the oil pressure regulator works to prevent an oversupply of oil. During normal oil sup-
ply, a coil spring and valve keep the by±pass closed, but when too much oil is being fed, the pressure
become extremely high, overpowering the force of the spring and opening the valves. This allows the
excess oil to flow through the valve and return to the oil pan.
OIL FILTER
The oil filter is a full flow type filter with a built±in paper filter element, Particles of metal from wear, air-
born dirt, carbon and other impurities can get in the oil during use and could cause accelerated wear or
seizing if allowed to circulate through the engine. The oil filter, integrated into the oil line, removes these
impurities as the oil passes through it. The filter is mounted outside the engine to simplify replacement of
the filter element.
A relief valve is also included ahead of the filter element to relieve the high oil pressure in case the filter
element becomes clogged with impurities. The relief valve opens when the oil pressure overpowers the
force of the spring. Oil passing through the relief valve by±passes the oil filter and flows directly into the
main oil hole in the engine.
± LUBRICATION SYSTEMDescriptionLU±4

Oil leakage
Relief valve faulty
Oil pump faulty
Engine oil poor quality
Crankshaft bearing faulty
Connecting rod bearing faulty
Oil filter cloggedRepair as necessary
Repair relief valve
Repair oil pump
Replace engine oil
Replace bearing
Replace bearing
Replace oil filter Cylinder head; cylinder block or oil pump
body damaged or cracked
Oil seal faulty
LU±9,16
LU±9,16
LU±7
EM±116,
149
EM±114,
147
LU±7
TROUBLESHOOTING
Repair as necessary
Replace oil seal
EM±125,
160
LU±13
Relief valve faulty
Repair relief valve High oil pressureLow oil pressureReplace gasket Possible cause
Gasket faulty Oil leakageRemedy
LU±9, 16 Problem
Page
± LUBRICATION SYSTEMTroubleshootingLU±5