Valve Clearance: Adjustments
VALVE CLEARANCE (1NZ-FXE)ADJUSTMENT
1. REMOVE REAR FLOOR BOARD NO.2
2. REMOVE DECK FLOOR BOX REAR
3. REMOVE REAR FLOOR BOARD NO.3
4. DISCONNECT BATTERY NEGATIVE TERMINAL
5. REMOVE ENGINE UNDER COVER RH
6. REMOVE WINDSHIELD WIPER LINK ASSY
7. REMOVE COWL TOP PANEL SUB-ASSY OUTER FRONT
8. REMOVE RADIATOR SUPPORT OPENING COVER
9. REMOVE AIR CLEANER ASSY
10. SUSPEND BRAKE MASTER CYLINDER RESERVOIR SUB-ASSY
11. REMOVE RESERVOIR BRACKET
12. REMOVE CYLINDER HEAD COVER SUB-ASSY
13. INSPECT VALVE CLEARANCE
a. Set the No. 1 cylinder to the TDC/compression.
1. Turn the crankshaft damper clockwise, then align its timing mark notch with the timing mark "0".
2. Check that the timing marks of the camshaft timing gear are located as illustrated.
HINT: If not, turn the crankshaft to align the marks.
b. Inspect the valve clearance indicated in the illustration.
1. Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
Valve clearance (Cold):
Intake 0.17 to 0.23 mm (0.007 to 0.009 inch)
Exhaust 0.27 to 0.33 mm (0.011 to 0.013 inch)
If the clearance is not as specified, record the out-of-specification measurement, then adjust the valve clearance.
c. Turn the crankshaft clockwise by 1 complete revolution (360°) and set the No. 4 cylinder to the TDC/compression.
d. Inspect the valve clearance indicated in the illustration.
1. Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
Valve clearance (Cold):
Intake 0.17 to 0.23 mm (0.007 to 0.009 inch)
Exhaust 0.27 to 0.33 mm (0.011 to 0.013 inch)
If the clearance is not as specified, record the out-of-specification measurement, then adjust the valve clearance.
14. ADJUST VALVE CLEARANCE
a. Set the No. 1 cylinder to the TDC/compression.
1. Turn the crankshaft damper clockwise, then align its timing mark notch with the timing mark "0".
2. Check that the timing marks of the camshaft timing gear are located as illustrated.
HINT: If not, turn the crankshaft to align the marks.
3. Put the paint marks on the timing chain plates which align with timing marks of the camshaft timing gear.
b. Using 8 mm socket hexagon wrench, remove the service hole screw plug.
c. Insert a screwdriver into the service hole of the chain tensioner to hold the stopper plate of the chain tensioner upward.
HINT: Lifting up the stopper plate of the chain tensioner unlocks the plunger.
d. Keeping the stopper plate of the chain tensioner lifted, slightly rotate the hexagonal lobe of the camshaft No. 2 to the right with an adjustable wrench so the plunger of the chain tensioner is pushed.
HINT: When the camshaft No. 2 is slightly rotated to the right, the plunger is pushed.
e. Keeping the adjustable wrench installed, remove the screwdriver with the plunger pushed.
NOTICE: Do not move the adjustable wrench.
HINT: Removing the screwdriver lifts down the stopper plate and locks the plunger.
f. Insert a 3.0 mm (0.118 inch) diameter bar into the hole of the stopper plate with the stopper plate of the chain tensioner lifted down and locked.
HINT: If a 3.0 mm (0.118 inch) diameter bar cannot be inserted into the hole of the stopper plate, rotate the camshaft No. 2 slightly to the left and right. Then a 3.0 mm (0.118 inch) diameter bar can be inserted easily.
g. Secure the 3.0 mm (0.118 inch) diameter tear with tape.
h. Hold the hexagonal lobe of the camshaft No. 2 with the adjustable wrench.
i. Using SST, loosen the bolt.
SST 09023-38400
j. Remove the camshaft bearing caps No. 1 and No. 2 in the sequence shown in the illustration.
NOTICE: Uniformly loosen the bolts keeping the camshaft No. 2 level.
k. Remove the bolt when the camshaft No. 2 is lifted slightly, then remove the camshaft No. 2 and camshaft timing gear.
l. Remove the camshaft bearing caps No. 2 in the sequence shown in the illustration.
NOTICE: Uniformly loosen the bolts keeping the camshaft level.
m. Hold the timing chain by hand, then remove the camshaft.
n. Tie the timing chain with a string or wire.
NOTICE: Prevent foreign objects from getting into the engine compartment with a shop rag.
o. Using a micrometer, measure the thickness of the removed valve lifter.
p. Calculate the thickness of the valve lifter so that the valve clearance comes within the specified value.
Specified value (Cold):
Intake A = B + (C - 0.20 mm (0.008 inch))
Exhaust A = B + (C - 0.30 mm (0.012 inch))
q. Select a new lifter with a thickness which is as close to the calculated value as possible.
HINT:
^ The lifters are available in 35 sizes in increments of 0.020 mm (0.0008 inch), from 5.060 mm (0.1992 inch) to 5.740 mm (0.2260 inch).
^ Refer to the New Lifter Thickness table on the next 2 pages.
Valve Lifter Selection Chart (Intake)
Valve Lifter Selection Chart (Exhaust)
r. Install the selected valve lifter.
s. Apply engine oil to the cam and cylinder head journal.
t. Hold the chain as illustrated, then install the camshaft and camshaft timing gear assembly so that the paint mark of the chain and the timing mark of the camshaft timing gear assembly are aligned.
u. Check the front marks and numbers on the bearing cap No. 2, then tighten the bolts uniformly in several steps in the sequence shown in the illustration.
Torque: 13 Nm (130 kgf-cm, 9.6 ft. lbs.)
NOTICE: Tighten the bolts uniformly keeping the camshaft level.
v. Hold the chain as illustrated, then install the camshaft No. 2 and camshaft timing gear so that the paint mark of the chain and the timing mark of the camshaft timing gear are aligned.
w. Align the knock pin of the camshaft No. 2 with the pin groove of the camshaft timing gear.
x. Temporarily tighten the camshaft timing chain with the bolt.
y. Check the front marks and numbers on the bearing caps No. 1 and No. 2, then tighten the bolts uniformly in several steps in the sequence shown in the illustration.
Torque:
23 Nm (235 kgf-cm, 17 ft. lbs.) for bearing cap No. 1
13 Nm (130 kgf-cm, 9.6 ft. lbs.) for bearing cap No. 2
z. Hold the hexagonal lobe of the camshaft No. 2 with the adjustable wrench.
aa. Using SST, tighten the bolt.
SST 10514, 09023-38400
Torque: 64 Nm (650 kgf-cm, 47 ft. lbs.)
ab. Remove the 3.0 mm (0.118 inch) diameter bar from the chain tensioner.
ac. Turn the crankshaft damper clockwise, then align its timing mark notch with the timing mark "0".
ad. Check that the timing marks are located as illustrated.
ae. Apply adhesive to the 2 or 3 threads of the service hole screw plug bolt end.
Adhesive: Part No. 08833-00070, THREE BOND 1324, or equivalent
NOTICE: Remove any oil from the bolts and bolt holes.
af. Using an 8 mm socket hexagon wrench, install the service hole screw plug.
Torque: 15 Nm (153 kgf-cm, 11 ft. lbs.)
15. INSTALL CYLINDER HEAD COVER SUB-ASSY
16. INSTALL RESERVOIR BRACKET
Torque: 8.5 Nm (87 kgf-cm, 75 inch lbs.)
17. INSTALL BRAKE MASTER CYLINDER RESERVOIR SUB-ASSY
Torque: 8.5 Nm (87 kgf-cm, 75 inch lbs.)
18. INSTALL AIR CLEANER ASSY
Torque:
7.0 Nm (71 kgf-cm, 62 inch lbs.) for bolt
3.0 Nm (31 kgf-cm, 27 inch lbs.) for clamp
19. INSTALL COWL TOP PANEL SUB-ASSY OUTER FRONT
20. INSTALL WINDSHIELD WIPER LINK ASSY
21. CHECK FOR ENGINE OIL LEAKS
22. INSTALL RADIATOR SUPPORT OPENING COVER
23. INSTALL ENGINE UNDER COVER RH
24. CONNECT BATTERY NEGATIVE TERMINAL
Torque: 6.0 Nm (61 kgf-cm, 53 inch lbs.)
25. INSTALL REAR FLOOR BOARD NO.3
26. INSTALL DECK FLOOR BOX REAR
27. INSTALL REAR FLOOR BOARD NO.2
28. POWER WINDOW CONTROL SYSTEM INITIALIZE