1986 TOYOTA SUPRA Service Repair Manual

CRANKSHAFT OIL SEALS
REPLACEMENT
HINT: There are 2 methods A and B to replace the oil seal as
follows:
1. REPLACE CRANKSHAFT FRONT OIL SEAL
A. If oil pump is removed from cylinder block:
(a) Using a screwdriver, pry out the oil seal.
(b) Using SST and a hammer, tap in a new oil seal until its surface
is flush with the oil pump body edge.
SST 09316±60010 (09316±00010)
(c) Apply MP grease to the oil seal lip.
B. If oil pump is installed on cylinder block:
(a) Using a knife, cut off the oil seal lip.
(b) Using a screwdriver, pry out the oil seal.
NOTICE: Be careful not to damage the crankshaft. Tape the
screwdriver tip.
(c) Apply MP grease to a new oil seal lip.
(d) Using SST and a hammer, tap in the oil seal until its surface
is flush with the oil pump body edge.
SST 09316±60010 (09316±00010)
2. REPLACE CRANKSHAFT REAR OIL SEAL
A. If rear oil seal retainer is removed from cylinder block:
(a) Using a screwdriver and hammer, tap out the oil seal. EG±114
± ENGINEENGINE MECHANICAL

(b) Using SST and a hammer, tap in a new oil seal until its surface
is flush with the rear oil seal retainer edge.
SST 09223±15030, 09608±30022 (09608±05010)
(c) Apply MP grease to the oil seal lip.
B. If rear oil seal retainer is installed on cylinder block:
(a) Using a knife, cut off the oil seal lip.
(b) Using a screwdriver, pry out the oil seal.
NOTICE: Be careful not to damage the crankshaft. Tape the
screwdriver tip.
(c) Apply MP grease to a new oil seal lip.
(d) Using SST and a hammer, tap in the oil seal until its surface
is flush with the rear oil seal retainer edge.
SST 09223±15030, 09608±30022 (09608±05010)
PISTON AND CONNECTING ROD
ASSEMBLY
1. ASSEMBLE PISTON AND CONNECTING ROD
(a) Install a new snap ring at one end of the piston pin hole.
HINT: Be sure that end gap of the snap ring is not aligned with
the pin hole cutout portion of the piston.
(b) Gradually heat the piston to about 80°C (176°F).
± ENGINEENGINE MECHANICALEG±115

(c) Coat the piston pin with engine oil.
(d) Align the front marks of the piston and connecting rod, and
push in the piston pin with your thumb.
(e) Install a new snap ring at the other end of the piston pin hole.
HINT: Be sure that end gap of the snap ring is not aligned with
the pin hole cutout portion of the piston.
2. INSTALL PISTON RINGS
(a) Install the oil ring expander and 2 side rails by hand.
(b) Using a piston ring expander, install the 2 compression rings
with the code mark facing up.
Code mark:
2JZ±GE
No.1 1T
No.2 2T
2JZ±GTE
No.1 1N
No.2 2N
(c) Position the piston rings so that the ring ends are as shown.
NOTICE: Do not align the piston ring ends.
3. INSTALL BEARINGS
(a) Align the bearing claw with the groove of the connecting rod
and connecting cap.
(b) Install the bearings in the connecting rod and connecting rod
cap. EG±116
± ENGINEENGINE MECHANICAL

CYLINDER BLOCK ASSEMBLY
HINT:
wThoroughly clean all parts to be assembled.
wBefore installing the parts, apply new engine oil to all
sliding and rotating surfaces.
wReplace all gaskets, O±rings and oil seals with new
parts.
NOTICE: Apply a generous amount of oil on the sliding surface
of the bearing, and not on the back of it or on the surface to
which it is installed.
1. 2JZ±GTE:
INSTALL OIL NOZZLES (WITH RELIEF VALVES)
Using a 5 mm hexagon wrench, install the oil nozzle with the
bolt. Install the 6 oil nozzles.
Torque: 8.8 NVm (90 kgfVcm, 78 in.Vlbf)
2. INSTALL MAIN BEARINGS
HINT:
wMain bearings come in widths of 20.0 mm (0.787 in.) and
23.0 mm (0.906 in.). Install the 23.0 mm bearings in the
No.1 cylinder block journal position with the main
bearing cap. Install the 20.0 mm bearings in the other
positions.
wUpper bearings have an oil groove and oil holes; lower
bearings do not.
(a) Align the bearing claw with the claw groove of the main
bearing cap or cylinder block.
NOTICE: Install the bearing with the oil hole in the cylinder
block.
(b) Install the bearings in the cylinder block and main bearing
caps.
± ENGINEENGINE MECHANICALEG±117

3. INSTALL UPPER THRUST WASHERS
Install the 2 thrust washers under the No.4 main journal posi-
tion of the cylinder block with the oil grooves facing outward.
4. PLACE CRANKSHAFT ON CYLINDER BLOCK
5. INSTALL MAIN BEARING CAP AND LOWER THRUST
WASHERS
A. Place main bearing cap and lower thrust washers on cyl-
inder block
(a) Install the lower thrust washers on the No.4 main bearing with
the grooves facing outward.
(b) Install the main bearing caps in numerical order with the
arrows facing forward.
B. Install main bearing cap bolts
HINT:
wThe main bearing cap bolts are tightened in 2
progressive steps (steps (b) and (d)).
wIf any of the main bearing bolts break or deform, replace
them.
(a) Apply a light coat of engine oil on the threads and under the
heads of the main bearing cap bolts.
(b) Install and uniformly tighten the 14 main bearing cap bolts,
in several passes, in the sequence shown.
Torque: 44 NVm (450 kgfVcm, 33 ftVlbf)
If any one of the main bearing cap bolts does not meet the
torque specification, replace the main bearing cap bolt. EG±118
± ENGINEENGINE MECHANICAL

(c) Mark the front of the main bearing cap bolt head with paint.
(d) Retighten the main bearing cap bolts 90° in the numerical
order shown above.
(e) Check that the painted mark is now at a 90° angle to the front.
(f) Check that the crankshaft turns smoothly.
6. CHECK CRANKSHAFT THRUST CLEARANCE
(See step 5 in cylinder block disassembly)
7. INSTALL PISTON AND CONNECTING ROD ASSEMBLIES
Using a piston ring compressor, push the correctly numbered
piston and connecting rod assemblies into each cylinder with
the front mark of the piston facing forward.
8. INSTALL CONNECTING ROD CAPS
A. Place connecting rod cap on connecting rod
(a) Match the numbered connecting rod cap with the connecting
rod.
(b) Install the connecting rod cap with by aligning the dowel pin
to the corrosponding hole.
B. Install connecting rod cap bolts
HINT:
wThe connecting rod cap bolts are tightened in 2
progressive steps (steps (b) and (d)).
wIf any of the connecting rod bolts break or deform,
replace them.
(a) Apply a light coat of engine oil on the threads and under the
heads of the connecting rod cap bolts.
(b) A t first, in sta ll an d alte rn a te ly tig h te n th e bo lts of th e
connecting rod cap in several passes.
Torque: 29 NVm (300 kgfVcm, 22 ftVlbf)
If any one of the connecting rod cap bolts does not meet the
torque specification, replace the cap bolt.
± ENGINEENGINE MECHANICALEG±119

(c) Mark the front of the connecting rod cap bolt with paint.
(d) Retighten the connecting rod cap bolts 90° in the numerical
order shown.
(e) Check that the painted mark is now at a 90° angle to the front.
(f) Check that the crankshaft turns smoothly.
9. CHECK CONNECTING ROD THRUST CLEARANCE
(See step 2 in cylinder block disassembly)
10. INSTALL REAR OIL SEAL RETAINER
(a) Remove any old packing (FIPG) material and be careful not
to drop any oil on the contact surfaces of the retainer and
cylinder block.
wUsing a razor blade and gasket scraper, remove all the
old packing (FIPG) material from the gasket surfaces
and sealing groove.
wThoroughly clean all components to remove all debris.
wUsing a non±residue solvent, clean both sealing
surfaces.
(b) Apply seal packing to the retainer as shown in the illustration.
Seal packing:
Part No. 08826±00080 or equivalent
wInstall a nozzle that has been cut to a 2±3 mm
(0.08±0.12 in.) opening.
wParts must be assembled within 3 minutes of
application. Otherwise the material must be removed
and reapplied.
wImmediately remove nozzle from the tube and reinstall
cap.
(c) Install the retainer with the 6 bolts.
Torque: 5.9 NVm (60 kgfVcm, 52 in.Vlbf)
EG±120± ENGINEENGINE MECHANICAL

AFTER ASSEMBLY
1. INSTALL OIL PUMP
(See oil pump installation in Lubrication System)
2. INSTALL WATER PUMP
(See water pump installation in Cooling System)
3. 2JZ±GTE:
INSTALL CRANKSHAFT POSITION SENSOR
Torque: 8.8 NVm (90 kgfVcm, 78 in.Vlbf)
4. INSTALL RH ENGINE MOUNTING BRACKET AND
INSULATOR ASSEMBLY
HINT: The RH mounting bracket is marked ºA u EXº.
Torque: 58 NVm (590 kgfVcm, 43 ftVlbf)
5. INSTALL ENGINE COOLANT DRAIN PLUG
Torque: 29 NVm (300 kgfVcm, 22 ftVlbf)
6. 2JZ±GTE:
INSTALL UNION FOR OIL COOLER HOSE
(a) Apply adhesive to 2 or 3 threads of the union.
Adhesive:
Part No. 08833±00070, THREE BOND 1324, or
equivalent
(b) Install the union.
Torque: 39 NVm (400 kgfVcm, 29 ftVlbf)
7. INSTALL KNOCK SENSORS AND OIL PRESSURE
SWITCH
(a) Apply adhesive to 2 or 3 threads of the oil pressure switch.
Adhesive:
Part No. 08833±00080, THREE BOND 1344, LOCTITE
242 or equivalent
(b) Using SST, install the 2 knock sensors and oil pressure
switch.
SST 09816±30010
Torque:
Knock sensor
44 NVm (450 kgfVcm, 33 ftVlbf)
Oil pressure switch
14 NVm (150 kgfVcm, 11 ftVlbf)
± ENGINEENGINE MECHANICALEG±121