Toyota Supra 1990 Operating manual

MAINTENANCE
Page
MAINTENANCE SCHEDULE
................................ MA-2
MAINTENANCE OPERATIONS
............................. MA-6
GENERAL MAINTENANCE
.................................. MA-1 4
GENERAL NOTES:
The maintenance schedule for thevehicle consists of separate
A and
B schedules which are applicable depending on howthe
vehicle isused. Confirm the vehicle's usage conditions, select
the appropriate schedule and service the vehicle accordingly.
Everyservice iteminthe periodic maintenancelist be performed.
Failure to do even one itemcan cause the engine to run poorly
and increase exhaust emissions.

MAINTENANCE SCHEDULE
SCHEDULE A
CONDITION
Maintenance operation:
A = Check and adjust if necessary;
R = Replace, change or lubricate;
I = Inspect and correct or replace if necessary
Towing a trailer, using a camper or car top carrier.
Repeated short trips of less than 5 miles 18 km) and outside temperatures remain below freezing.
a Extensive idling and/or low speed driving for long distances such as police, taxi or door-to-door delivery use.
Operating on dusty, rough, muddy or salt spread roads.
System
gNGINE
beyond 60,000 miles (96,000 km) should be performed at the same intervals shown in each
Drive belts I: First period, 60,000 miles (96,000 km) or 72 months
I: After that, every 7,500 miles
(1 2,000 km)or 12 months MA-6 (item 2)
I1
Engine oil*
Engine oil filter
*
Engine coolant
7M-GEengine
7M-GTEengine
7M-GE engine
7M-GTEenaine R: First period, 45,000 miles (72,000 km) or 36 months
R: After that, every 30,000 miles (48,000 km) or 24 months MA-7 (item 7)
7M-GE engine I:
months
I 1 I 1 I 1
/ R: Every 36 months
Air filter* (2) I: Every 5,000 miles (8,000 km)
or 6 months
7M-GTE
engine
R: Everv 30.000 miles (48.000 km) or 36 months
MA-7
(item 4, 5)
MA-7 (item
4, 5)
--
Fuel lines and connections (3)
Fuel tank cap gasket
Spark plugs
Charcoal canister
Exhaust pipes and mountings I I I
MA-7 (item 6)
MA-7 (item 6)
R I R I R 1 R I R I R I R I R I R I R I R I R I RLR I R I R I R: Every 6months
R: Every 2,500 miles (4,000 km) or 3 months
I I I I: Every 24
I
R
I R 1 R: Every 6 months
I
R: Everv 5,000 miles (8,000 km) or 6 months
R
/ R 1 R 1 R
R
I
R
R
I
R
I R R I R I R I R
R
I R
I: Every 36 months
R: Every 72 months
R: Every 72 months
I: Every 72 months
R
MA-8 (item 10)
MA-8 (item 9)
MA-7 (item 3)
--
MA-8 (item 8)

SCHEDULE A (Cont'd)
Automatic transmission, manual
transmission and differential oil
R R R I: Every 24 months MA-1 1 (item 21)
Steering gear housing oil
(5) I I I I I: Every 24months MA-1 0 (item 18)
-
Bolts and nuts on chassis and body (6) I I I I I I I I I: Every 12 months MA-12 (item 22)
* Mark indicates maintenance which is part of the warranty conditions for the engine controi system. The warranty period is in accordance with the owner's
guide or the warranty booklet.
(* :
California specification vehicles.)
NOTE:
(1 )
Applicable tovehicles operated under conditions of extensive idling and /or lowspeed driving for longdistances such as police, taxi or door-to-door delivery use.
(2) Applicable when operating mainly on dusty roads.
(3)
Includes inspection of vapor vent system.
(4) Also applicable to lining drum for parking brake.
(5)
Check for oil leaks from steering gear box.
(6) Applicable only when operating mainly on rough, muddy roads. The applicable parts are listed below. For other usage conditions, refer to SCHEDULE
B.
Front and rear suspension member to cross body.
Bolts for sheet installation.

SCHEDULE B
CONDITION
Conditions other than those listed for SCHEDULE A.
System
ENGINE
FUEL
IGNITION
EVAP
BRAKES
Service interval Maintenance services beyond 60,000 miles (96,000 km) should continue to be performed at the same
(Use odometer reading or intervals shown for each maintenance schedule.
Maintenance items Months
\I km~1.000
/ 12 / 24 / 36 / 48 / 60 / 72 / 84 / 96 1
I
See Page
(item No.)
Drive belts
Valve clearance I: First period, 60,000 miles (96,000 km) or 72 months
I: After that. everv 7.500 miles (12.000 km) or 12 months
1 MA-6 (item 2)
I A
I A: Every 72 months I MA-8 (item 12)
Engine oil* 7M-GE engine
7M-GTE engine
Engine coolant
Engine oil filter*
R: First period, 45,000 miles (72,000 km) or 36 months
/ MA-7 (item 7)
R: After that. everv 30.000 miles (48.000 km) or 24 months
R
I R I R I R I R I R I R I R I R: Every 12 months
-
R: Everv 5,000 miles (8,000 km) or 6 months MA-7 (item 6)
7M-GE engine
7M-GTE engine
Fuel lines and connections (1)
I 1 I I I I I I I I II:Everv36months I MA-8 (item 10)
Exhaust pipes and mountings
Air filter*
R
I R I R I R I R I R I R I R I R: Every 12months
R: Every 10,000 miles (16,000 km) or 12 months
Charcoal canister
I I I I I I I I I II:Everv72months I MA-8 (item 8)
MA-7 (item 6)
I
R
Fuel tank cap gasket
Spark plugs
Brake line ~i~esand hoses
I I I I I I I I I I I I I I: Everv 24 months I MA-9 (item 13)
I
R
R
R
Brake linings and drums (2)
Brake
ads and discs
I: Every 36 months
R: Every 36 months
R: Every 72 months
R: Everv 72 months
I
I
MA-8 (item 11
)
MA-7 (item 5)
MA-8 (item 9)
MA-7 (item 3)
I
I I I I I
I: Every 24 months
I: Everv 24 months MA-9 (item 15) MA-9 (item 14)

SCHEDULE B (Cont'd)
See Page
(item No.)
System
Months
1 II
1 Maintenance items
I I I I I I I I
CHASSIS
Service interval
(Use odometer reading or
months, whichever comes first)
I
Automatic transmission, manual transmission
and differential (ex. LSD) oil
Limited slip differential (LSD)oil (3)
* Mark indicates maintenance which is part of the warranty conditions for the engine control system. The warranty period is in accordance with the owner's
guide or the warranty booklet.
(* :
California specification vehicles.)
Maintenance services beyond 60,000 miles (96,000 km) should continue to be performed at the same
intervals shown for each maintenance schedule.
Miles
x 1.000 1 7.5 1 15 1 22.5 1 30 1 37.5 1 45 1 52.5 1 60 1
km x 1,000 1 12
Steering linkage
SRS airbag
Ball joints and dust covers
Steering gear housing oil (4)
Bolts and nuts on chassis and body (5)
NOTE:
60
I
I
(1) Includes inspection of vapor vent system.
24
I
I
(2) Also applicable to lining drum for parking brake.
72
MA-10 (item 16)
MA-1
0 (item 17)
MA-11 (item 19)
11) 1 I I \I) 1 I 1 I: Every 24 months
I: First period, 10years
I: After that, every 2 years
I
R
(3) Check for oil leaks.
36
I
I
I
(4) Check for oil leaks from steering gear box.
84
48
I
I
(5) The applicable parts are listed below.
96
I
I
I
Front and rear suspension member to cross body.
I
Bolts for sheet installation.
I
I
I
I I I I: Every 24 months
I: Every 24 months
I: Every 24months
R: Everv 48 months
MA-11 (item 20)
MA-11 (item 20)
MA-11 (item 21
)
I: Every 24months
I: Every 24 months MA-10 (item 18)
MA-12 (item 22)

MA-6 MAINTENANCE - Maintenance Operations
MAINTENANCE OPERATIONS
ENGINE
Cold Engine Operations
1. REPLACE TIMING BELT
(a) Remove the timing belt.
(See pages EM-22 to 25)
(b) Install the timing belt.
(See pages EM-28 to 31
c+7N ippo;dq Borroughs
EC0003 EC0004 ECOOOl
CORRECT WRONG WRONG
2. INSPECT DRIVE BELTS
(a) Visually check the belt for excessive wear, frayed
cords etc.
If necessary, replace the drive belt.
HINT: Cracks onthe rib side of a belt are considered ac-
ceptable. If the belt has chunks missing from the ribs, it
should be replaced.
(b) Using a belt tension gauge, check the drive belt
tension.
Belt tension gauge:
Nippondenso BTG-20 (95506-00020)
Borroughs No. BT-33-73F
Drive belt tension:
Alternator Used belt
1 15 + 20 Ib
New belt
175 + 5 Ib
PS
pump Used belt 100 + 20 Ib
New belt
160 + 20 Ib
AIC Used belt
105 + 10 Ib
New belt
160 + 20 Ib
If necessary, adjust the drive belt tension.
HINT:
"New belt" refers to a belt which has been used less
than
5 minutes on a running engine.
"Used belt" refers to a belt which has been used on a
running engine for
5 minutes or more.
After replacing the drive belt, check that it fits properly
in the ribbed grooves, especially in the places difficult
to see.
After installing a new belt, run the engine for approx.
5 minutes and then recheck the tension.

MAINTENANCE - Maintenance Operations MA-7
Front
3. REPLACE SPARK PLUGS
(a) Disconnect the high-tensioncords at the boot.Do not
pull on the cords.
(b) Usingplugwrench
(1 6 mm),removethe spark plugs.
(c)
Check the gap on the new plugs.
Correct electrode gap
7M-GE 1
.I mm (0.043 in.)
7M-GTE 0.8 mm (0.031 in.)
Recommended spark plugs:
7M-GE ND PQ16R
NGK BCPR5EP11
7M-GTE ND PQ20R-P8
NGK BCPR6EP-N8
HINT: If adjusting the gap of a new plug, bend only the
base of the ground electrode. Donottouch the tip. Never
attempt to adjust the gap on a used plug.
4. INSPECT AIR FILTER
(a) Visually check that the air cleaner element is not ex-
cessively dirty, damaged or oily.
If necessary, replace the air cleaner element.
(b) Ciean the element with compressed air.
First blow from the back side thoroughly, then blow off
the front side of the element.
5. REPLACE AIR FILTER
Replace the air cleaner element with a new one.
6. REPLACE ENGINE OIL AND OIL FILTER
(See page LU-5)
Oil grade: API grade SG, multigrade, fuel-efficient and
recommended viscosity oil.
Engine oil capacity:
Drain and refill
wlo Oil filter change
4.1 liters (4.3 US qts, 3.6 Imp. qts)
wl Oil filter change
4.4 liters (4.7 US qts, 3.9 Imp. qts)
7. REPLACE ENGINE COOLANT
(See page CO-5)
Coolant capacity (wlHeater or air conditioner):
7M-GE MIT
8.1 liters (8.6 US qts, 7.1 Imp. qts)
AIT 8.0 liters (8.5 US qts, 7.0 Imp. qts)
7M-GTE MIT 8.2 liters (8.7 US qts, 7.2 Imp. qts)
AIT 8.1 liters (8.5 US qts, 7.1 Imp. qts)

MA-8 MAINTENANCE - Maintenance Operations
Air should flow through f;eely and
nocharcoal should come out.
~~3298
8. INSPECT CHARCOAL CANISTER
(a) Disconnectthe hosesfromthe charcoal canister. Label
the hoses for correct reinstallation.
(b) Plugpipe
A withyour finger and blow compressed air
(3 kg/cm2, 43 psi or
294 kPa) through pipe B (fuel
tank side).
Check that air comes out of the bottom pipe C
without resistance.
Check that no activated charcoal comes out.
I
If necessary, replace the charcoal canister.
HINT: Do not attempt to wash the charcoal.
(c)
Connect the hoses to the charcoal canister
21 9. REPLACE GASKET IN FUEL TANK CAP
(a) Removethe old gasket (O-ring)from thetank cap. Do
not damage the cap.
(b) Install the new gasket by hand.
(c)
Inspect the cap for damage or cracks.
(dl Install the cap and check the torque limiter.
10. INSPECT FUEL LINES AND CONNECTIONS
Visually inspect thefuel linesfor cracks, leakage, loose con-
nections, deformation or tank band looseness.
11. INSPECT EXHAUST PIPES AND MOUNTINGS
Visually inspect the pipes, hangers, and connections for
severe corrosion, leaks or damage.
12. ADJUST VALVE CLEARANCE
HINT: Check and adjust the valve clearance while the en-
gine is cold.
(a) Remove the cylinder head covers.
(b) Measure and adjust valve clearance.
(See page
EM-7)
Valve clearance (cold):
Intake 0.15
- 0.25 mm (0.006 - 0.010 in.)
Exhaust 0.20 - 0.30 mm (0.008 - 0.012 in.)
(c)
Reinstall the cylinder head covers.

MAINTENANCE - Maintenance Operations MA-9
Indicator
MA01 32 MA0317
BRAKES
13. INSPECT BRAKE LINE PIPES AND HOSES
HINT: lnspect ina well lighted area. lnspectthe entire cir-
cumference and length of the brake hoses using a mirror
as required. Turn the front wheels fully right or left before
inspecting the front brake.
(a) Check all brake lines and hoses for:
Damage Corrosion
Wear Leaks
Deformation Bends
Cracks Twists
(b) Check all clamps for tightness and connections for
leakage.
(c)
Check that the hoses and lines are clear of sharp
edges, moving parts and the exhaust system.
(dl Check that the lines installed in grommets pass
through the center of the grommets.
14. INSPECT FRONT AND REAR BRAKE PADS AND DISCS
(See pages BR-28, 36)
(a) Check the thickness of the disc brake pads and check
for irregular wear.
Minimum pad thickness: 1.0 mm (0.039 in.)
HINT: If a squealing or scraping noise comes from the
brake during driving, check the pad wear indicator. If there
are traces of the indicator contacting the disc rotor, the
disc pad should be replaced.
(b) Check the disc for wear or runout.
Minimum disc thickness:
Front 21.0 mm (0.827 in.)
Rear 17.0 mm (0.669 in.)
Maximum disc runout: 0.13 mm (0.0051 in.)
15. INSPECT PARKING BRAKE LININGS AND DRUMS
(See page BR-41)
(a) Check the lining-to-drumcontact condition and lining
wear.
Minimum lining thickness: 1.0 mm (0.039 in.)
(b) Check the brake drum for scoring or wear.
Maximum drum inside diameter: 191 mm (7.52 in.)
(c)
Clean the brake parts with a damp cloth.
HINT: Donot use compressedair toclean the brake parts.

MA-1 0
MAINTENANCE - Maintenance Operations
(d) Settle the parking brake shoes and drum. When per-
forming the road test in item
23, dothe following:
Drivethe vehicle at approx. 30mph (50kmlh)on
a safe, level and dry road.
With the parking brake release button pushed in,
pull on the lever with
9 kg (20Ib, 88 N) of force.
Drivethe vehicle for approx. 114 mile (400meters)
in this condition.
Repeat this procedure 2 or 3 times.
Check parking lever travel.
If necessary, adjust the parking brake.
CHASSIS
16. INSPECT STEERING LINKAGE
(a) Check the steering wheel freeplay.
Maximum steering wheel freeplay:
30 mm (1.I8in.)
Withthe vehicle stopped and pointedstraight ahead,
rock the steering wheel gently back and forth with
light finger pressure.
(b) Check the steering linkage for looseness or damage.
Check that:
Tie rod ends do not have excessive play.
Dust seals and boots are not damaged.
Boot clamps are not loose.
17. INSPECT SRS AIRBAG
Visually inspect the steering wheel pad (airbagand inflater).
Use the diagnosis check to check if there are abnor-
malities.
Check thatthere are no cuts, cracks or noticeable color
changes on the surface of the steering wheel pad or in
the center groove of the pad.
Remove the steering wheel pad from the vehicle and
check the wiring and steering wheel for damage and cor-
rosion due to rusting, etc.
If necessary, replace the steering wheel pad.
CAUTION:
For removal and replacement of the steering wheel pad,
see page SR-5 and be sure to perform the operation in
the correct order.
Before disposing of the steering wheel pad, the airbag
must first be deployed by using an SST,
(See page AB-82)
18. INSPECT STEERING GEAR HOUSING OIL
Check the steering gear housing for oil leakage.