Page 776 of 1399
EC0GB−01
EC3069
Gasket
Check Valve (V acuum Valve)
EC−6
−
EMISSION CONTROL EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
INSPECTION
1. VISUALLY INSPECT LINES AND CONNECTIONS
Look for loose connections, sharp bends or damage.
2. VISUALLY INSPECT FUEL TANK
Look for deformation, cracks or fuel leakage.
3. VISUALLY INSPECT FUEL TANK CAP
Check if the cap and/or gasket are deformed or damaged.
If necessary, repair or replace the cap.
4. INSPECT TVV OPERATION WITH COLD ENGINE
(a) The engine coolant temperature should be below 45 °C
(113 °F).
(b) Disconnect the EVAP hose from the union pipe.
(c) Start the engine.
(d) Gradually increase the engine speed from idle to 3,000 rpm and check that air suction is not felt at the union pipe.
5. INSPECT OPERATION OF VCV WITH HOT ENGINE
(a) Warm up the engine.
(b) With the engine idling, check that air suction is not felt at union pipe.
(c) Gradually increase the engine speed to 3,000 rpm and check that there is air suction at the union pipe.
(d) Reconnect the EVAP hose to the union pipe.
If no problem is found with this inspection, system is normal;
otherwise inspect each part.
6. REMOVE CHARCOAL CANISTER WITH BRACKET
7. REMOVE CHARCOAL CANISTER FROM BRACKET
8. REMOVE CAP FROM CHARCOAL CANISTER
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−
EMISSION CONTROL EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
EC−7
1996 LAND CRUISER (RM451U)
9. VISUALLY INSPECT CHARCOAL CANISTER
Look for cracks or damage.
10. INSPECT FOR CLOGGED FILTER AND STUCK VALVE
(a) Using low pressure compressed air (7.26 kPa, 74 gf/cm
2,
1.05 psi), blow into tank pipe and check that air flows with-
out resistance from the other pipes.
(b) While holding drain pipe closed, blow air (1.96 kPa, 20 gf/
cm
2, 0.28 psi) into purge pipe and check that air flow with-
out resistance from tank pipe.
If a problem is found, replace the charcoal canister.
11. CLEAN FILTER IN CANISTER
Clean the filter by blowing 294 kPa (3 kgf/cm
2, 43 psi) of com-
pressed air into tank pipe while holding purge pipe closed.
NOTICE:
Do not attempt to wash the canister.No activated carbon
should come out.
12. REINSTALL CAP TO CHARCOAL CANISTER
13. REINSTALL CHARCOAL CANISTER TO BRACKET Torque: 14 N·m (145 kgf·cm, 10 ft·lbf)
14. REINSTALL CHARCOAL CANISTER WITH BRACKET Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)
15. DRAIN ENGINE COOLANT
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EC−8
−
EMISSION CONTROL EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
16. REMOVE TVV FROM CYLINDER HEAD
(a) Disconnect the 2 vacuum hoses.
(b) Remove the TVV.
17. INSPECT TVV OPERATION
(a) Cool the TVV to below 45° C (113°F) with cool water.
(b) Check that air flows from pipe J to the air filter.
(c) Heat the TVV to above 64° C (147°F) with hot water.
(d) Check that air flows from pipe J to pipe K.
If operation is not as specified, replace the TVV.
18. REINSTALL TVV
(a) Apply adhesive to 2 or 3 threads of the TVV, and install it.
Adhesive:
Part No. 08833 −00070, THREE BOND 1324
or equivalent
Torque: 29 N·m (300 kgf·cm, 22 ft·lbf)
(b) Reconnect 2 vacuum hoses.
19. REFILL WITH ENGINE COOLANT
20. REMOVE INTAKE MANIFOLD STAY
21. REMOVE VCV
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EC0JT−01
−
EMISSION CONTROL EXHAUST GAS RECIRCULATION (EGR) SYSTEM
EC−11
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT AND CLEAN FILTER IN EGR V ACUUM MOD-
ULATOR
(a) Remove the cap and filter.
(b) Check the filter for contamination or damage.
(c) Using compressed air, clean the filter.
(d) Reinstall the filter and cap.
HINT:
Install the filter with the coarser surface facing the atmospheric
side (outward).
2. INSTALL VACUUM GAUGE
Using a 3 −way connector, connect a vacuum gauge to the hose
between the EGR valve and EGR vacuum modulator.
3. INSPECT SEATING OF EGR VALVE
Start the engine and check that the engine starts and runs at
idle.
4. CONNECT TOYOTA HAND− HELD TESTER OR OBD II
SCAN TOOL (See page EM−10)
5. INSPECT VSV OPERATION WITH COLD ENGINE
(a) The engine coolant temperature should be below 47 °C
(117 °F).
(b) Check that the vacuum gauge indicates zero at 2,500 rpm.
(c) Check that the EGR pipe is not hot.
6. INSPECT OPERATION OF VSV AND EGR VACUUM
MODULATOR WITH HOT ENGINE
(a) Warm up the engine to above 53° C (127°F).
(b) Check that the vacuum gauge indicates low vacuum at 2,500 rpm.
(c) Disconnect the vacuum hose port R of the EGR vacuum modulator and connect port R directly to the air intake
chamber with another hose.
(d) Check that the vacuum gauge indicates high vacuum at 2,500 rpm.
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EM1Q4−01
P05120A16078
1 Dot Mark
EM−4
−
ENGINE MECHANICAL VALVE CLEARANCE
507
Author: Date:
1996 LAND CRUISER (RM451U)
VALVE CLEARANCE
INSPECTION
HINT:
Inspect and adjust the valve clearance when the engine is cold.
1. DRAIN ENGINE COOLANT
2. REMOVE THROTTLE BODY (See page SF−45)
3. DISCONNECT ENGINE WIRE AND HEATER VALVE FROM COWL PANEL
(a) Remove the 2 bolts and disc onnect the ground strap and
engine wire.
(b) Remove the 2 bolts and disconnect the heater valve.
4. DISCONNECT HIGH −TENSION CORDS FROM SPARK
PLUGS (See page IG−1 )
5. REMOVE CYLINDER HEAD COVER
Remove the 13 bolts, cylinder head cover and gasket.
6. SET NO. 1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley, and align its groove with the timing mark ”0” of the timing chain cover.
(b) Check that the timing marks (1 and 2 dots) of the camshaft
drive and driven gears are in straight line on the cylinder
head surface as shown in the illustration.If not, turn the
crankshaft 1 revolution (360 °) and align the marks as
above.
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EM0494
−
ENGINE MECHANICAL VALVE CLEARANCE
EM−7
510
Author: Date:
1996 LAND CRUISER (RM451U)
9. Rear valves of No. 6 cylinder
ADJUST VALVE CLEARANCE
(a) Remove the distributor (See page IG−10).
(b) Remove the camshafts (See page EM−28).
(c) Remove the adjusting shim with a small screwdriver.
(d) Determine the replacement adjusting shim size by follow- ing the Formula or Charts:
Using a micrometer, measure the thickness of the
removed shim.
Calculate the thickness of a new shim so that the
valve clearance comes within specified value.
T ....... Thickness of removed shim
A ....... Measured valve clearance
N ....... Thickness of new shim
Intake: N = T + (A − 0.20 mm (0.008 in.))
Exhaust: N = T + (A − 0.30 mm (0.012 in.))
Select a new shim with a thickness as close as pos-
sible to the calculated value.
HINT:
Shims are available in 17 sized in increments of 0.05 mm
(0.0020 in.), from 2.50 mm (0.0984 in.) to 3.30 mm (0.1299 in.).
(e) Place a new adjusting shim on the valve lifters.
(f) Install the camshafts (See page EM−54 ).
(g) Recheck the valve clearance.
(h) Install the distributor (See page IG−11 ).
10. REINSTALL CYLINDER HEAD COVER
(a) Install the gasket to the cylinder head cover.
(b) Install the cylinder head cover with the 13 bolts.
11. RECONNECT HIGH −TENSION CORDS TO SPARK
PLUGS (See page IG−1 )
12. RECONNECT HEA TER VALVE AND ENGINE WIRE TO
COWL PANEL
(a) Connect the heater valve with the 2 bolts.
(b) Connect the ground strap and engine wire with the 2 bolts.
13. REINSTALL THROTTLE BODY (See page SF−48 )
14. REFILL RADIATOR WITH ENGINE COOLANT
15. CHECK AND ADJUST IGNITION TIMING (See page EM−10 )
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EM1E9−01
−
ENGINE MECHANICAL TIMING CHAIN
EM−13
1996 LAND CRUISER (RM451U)
REMOVAL
1. DRAIN ENGINE OIL
2. DRAIN ENGINE COOLANT
3. REMOVE ENGINE UNDER COVER
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 )
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EM1E3−01
EM−28
−
ENGINE MECHANICAL CYLINDER HEAD
1996 LAND CRUISER (RM451U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE BATTERY AND BATTERY TRAY
(a) Disconnect the battery cables.
(b) Remove the nuts, hold −down clamp and battery.
(c) Remove the bolt and disconnect the ground strap.
(d) Remove the 5 bolts and battery tray.
3. REMOVE AIR CLEANER HOSE AND CAP
4. DISCONNECT CRUISE CONTROL ACTUATOR CABLE FROM THROTTLE BODY
5. DISCONNECT ACCELERATOR CABLE FROM
THROTTLE BODY
6. DISCONNECT THROTTLE CABLE FROM THROTTLE BODY
7. DISCONNECT ENGINE GROUND STRAPS
(a) Disconnect the ground strap from the No. 1 engine hang-
er.
(b) Disconnect the ground strap from the air intake chamber.
8. DISCONNECT CONNECTOR ON INTAKE MANIFOLD FROM LH FENDER APRON
9. DISCONNECT BRAKE BOOSTER VACUUM HOSE
10. DISCONNECT EVAP HOSE
11. DISCONNECT FUEL RETURN HOSE
12. DISCONNECT HEATER HOSES
13. DISCONNECT ENGINE WIRE AND HEATER VALVE FROM COWL PANEL
(a) Remove the 2 bolts and disconnect the engine wire and
ground strap.
(b) Remove the 2 bolts and disconnect the heater valve.
14. REMOVE NO. 2 AND NO. 3 CYLINDER HEAD COVERS
Remove the 4 bolts and head covers.
15. REMOVE DISTRIBUTOR (See page IG−10 )
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