Page 153 of 2893

Specified Air Pressure:
290 kPa (3.0 kgf/cm , 42 psi)
2
6-10 Cylinder Head
VTEC Rocker Arm Test (cont’d)
D
07ZAJ-PNAA300
B
07ZAJ-PNAA200 C
07ZAJ-PNAA101
A
E
07AAJ-PNAA101
CA
B
8. Remove the sealing bolt (A) from the relief hole,
and install the VTEC air stopper (B).
9. Remove the No. 3 camshaft holder bolts, and install the VTEC air adapters (C) finger-tight.
10. Connect the air joint adapter (D) and the air pressure regulator (E).
11. Loosen the valve on the air pressure regulator, and apply the specified air pressure.
NOTE: If the rocker arm piston does not move after
applying air pressure, move the rocker arm up and
down manually by rotating the crankshaft
clockwise. 12. With the specified air pressure applied, move the
secondary rocker arm (A) for the No. 1 cylinder.
The mid rocker arm (B), primary rocker arm (C),
and secondary rocker arm should move together.
If the mid, primary, and secondary rocker arms move together, go to step 13.
If the mid and primary rocker arms do not move together with the secondary rocker arm, remove
the mid, primary, and secondary rocker arms as
an assembly, and check that the pistons in the
rocker arms move smoothly. If any rocker arm
needs replacing, replace the mid, primary, and
secondary rocker arms as an assembly, then
retest.
13. Repeat step 12 on the remaining secondary rocker arms with each piston at TDC. When all the
secondary rocker arms pass the test, go to step 14.
14. Remove the air pressure regulator, air joint adapter, and the VTEC air stopper and VTEC air adapters.
15. Tighten the camshaft holder mounting bolts to 22 N·m (2.2 kgf·m, 16 lbf·ft).
16. Tighten the sealing bolt to 20 N·m (2.0 kgf·m, 14 lbf·ft).
17. Install the cylinder head cover (see page 6-37).
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Page 154 of 2893

(#'
")
6-11
VTC Actuator Inspection
A B
1. Remove the cam chain (see page 6-18).
2. Loosen the rocker arm adjusting screws: K20Z2 engine (see step 2 on page 6-43)
K20Z3 engine (see step 2 on page 6-44)
3. Remove the camshaft holder: K20Z2 engine (see step 3 on page 6-43)
K20Z3 engine (see step 3 on page 6-44)
4. Remove the intake camshaft.
5. Check that the variable valve timing control (VTC) actuator is locked by turning the VTC actuator
counterclockwise. If not locked, turn the VTC
actuator clockwise until it stops, then recheck it. If it
is still not locked, replace the VTC actuator.
6. Seal the advance holes (A) and the retard holes (B) in the No. 1 camshaft journal with tape.
7. Punch a hole in the tape over one of the advance holes.
8. Apply air to the advance hole to release the lock. 9. Check that the VTC actuator moves smoothly. If the
VTC actuator does not move smoothly, replace the
VTC actuator.
10. Remove the tape and adhesive residue from the No. 1 camshaft journal.
11. Make sure the punch marks on the VTC actuator and the exhaust camshaft sprocket are facing up,
then set the camshafts in the rocker shaft holder:
K20Z2 engine (see step 6 on page 6-61)
K20Z3 engine (see step 6 on page 6-62)
12. Set the camshaft holders and cam chain guide B in place:
K20Z2 engine (see step 7 on page 6-61)
K20Z3 engine (see step 7 on page 6-62)
13. Tighten the camshaft holder bolts to the specified torque:
K20Z2 engine (see step 8 on page 6-61)
K20Z3 engine (see step 8 on page 6-62)
14. Hold the camshaft, and turn the VTC actuator clockwise until you hear it click. Make sure to lock
the VTC actuator by turning it.
15. Install the cam chain (see page 6-21).
16. Adjust the valve clearance: K20Z2 engine (see page 6-12)
K20Z3 engine (see page 6-14)
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Page 155 of 2893

(#'
") µµ
µµ
Special Tools Required
Valve Clearance
Intake: 0.21 0.25 mm (0.008 0.010 in.)
Exhaust: 0.28 0.32 mm (0.011 0.013 in.)
K20Z2 engine
6-12Cylinder Head
Valve Clearance Adjustment
A
B
C No. 1
No. 2
No. 3No. 4
No. 1 No. 2 No. 3 No. 4
EXHAUST
INTAKE
AB
Locknut wrench 07MAA-PR70120
Adjuster 07MAA-PR70110
NOTE: Connector the Honda Diagnostic System (HDS)
to the data link connector (DLC) (see step 2 on page
11-3), and monitor the engine coolant temperature
(ECT) sensor 1 with the HDS. Adjust the valve clearance
only when the engine coolant temperature is less than
38 °C (100 °F). 1. Remove the cylinder head cover (see page 6-36).
2. Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the variable valve timing control
(VTC) actuator and the punch mark (B) on the
exhaust camshaft sprocket should be at the top.
Align the TDC marks (C) on the VTC actuator and
the exhaust camshaft sprocket. 3. Select the correct feeler gauge for the valve
clearance you are going to check.
4. Insert the feeler gauge (A) between the adjusting screw (B) and the end of the valve stem, then slide
it back and forth, you should feel a slight amount of
drag.
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Page 156 of 2893
Specified Torque
Intake:
7x0.75mm
20 N·m (2.0 kgf·m, 14 lbf·ft)
Apply new engine oil to the nut threads.
Exhaust:
7x0.75mm
14 N·m (1.4 kgf·m, 10 lbf·ft)
Apply new engine oil to the nut threads.
6-13
07MAA-PR70110
07MAA-PR70120
5. If you feel too much or too little drag, loosen the locknut with the locknut wrench and the adjuster,
andturntheadjustingscrewuntilthedragonthe
feeler gauge is correct.
6. Tighten the locknut to the specified torque, and recheck the clearance. Repeat the adjustment if
necessary. 7. Rotate the crankshaft 180 ° clockwise (camshaft
pulley turns 90 °).
8. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.
9. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
10. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
(cont’d)
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Page 157 of 2893

(#'
")
Special Tools Required
K20Z3 engine
6-146-14 Cylinder Head
Valve Clearance Adjustment (cont’d)
B
A
C
11. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
12. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.
13. Install the cylinder head cover (see page 6-37). Locknut wrench 07MAA-PR70120
Adjuster 07MAA-PR70110
NOTE: Connect the Honda Diagnostic System (HDS) to
the data link connector (DLC) (see step 2 on page 11-3),
and monitor the engine coolant temperature (ECT)
sensor 1 with the HDS. Adjust the valve clearance only
when the engine coolant temperature is less than 38 °C
(100 °F).
1. Remove the cylinder head cover (see page 6-36).
2. Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the variable valve timing control
(VTC) actuator and the punch mark (B) on the
exhaust camshaft sprocket should be at the top.
Align the TDC marks (C) on the VTC actuator and
the exhaust camshaft sprocket.
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DYNOMITE -2009-
Page 158 of 2893

µµ
µµ
Valve Clearance
Intake: 0.21 0.25 mm (0.008 0.010 in.)
Exhaust: 0.25 0.29 mm (0.010 0.011 in.)
Specified Torque
7x0.75mm
20 N·m (2.0 kgf·m, 14 lbf·ft)
Apply new engine oil to the nut threads.
6-15
No. 1No. 2 No. 3 No. 4
No. 1 No. 2
No. 3 No. 4
EXHAUST
INTAKE
AB 07MAA-PR70110
07MAA-PR70120
3. Select the correct feeler gauge for the valve clearance you are going to check.
4. Insert the feeler gauge (A) between the adjusting screw (B) and the end of the valve stem, then slide
it back and forth, you should feel a slight amount of
drag. 5. If you feel too much or too little drag, loosen the
locknut with the locknut wrench and the adjuster,
andturntheadjustingscrewuntilthedragonthe
feeler gauge is correct.
6. Tighten the locknut to specified torque, and recheck the clearance. Repeat the adjustment if necessary.
7. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
8. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.
(cont’d)
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Page 159 of 2893

(#'
) Special Tools Required
Removal
6-166-16 Cylinder Head
Valve Clearance Adjustment
(cont’d)
Crankshaft Pulley Removal and
Installation
A
07JAB-001020A B
07NAB-001040A
C
07JAA-001020A
(or commercially
available)
9. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
10. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
11. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
12. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.
13. Install the cylinder head cover (see page 6-37). Holder handle 07JAB-001020A
Holder Attachment, 50 mm 07NAB-001040A
Socket, 19 mm 07JAA-001020A or a commercially
available19mmsocket
1. Remove the right front wheels.
2. Remove the splash shield (see step 25 on page 5-5).
3. Remove the drive belt (see page 4-31).
4. Hold the crankshaft pulley with holder handle (A) and holder attachment (B).
5. Remove the bolt with a socket, 19 mm (C) and a breaker bar, then remove the crankshaft pulley.
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Page 160 of 2893

(#'
) Special Tools Required
Removal
6-166-16 Cylinder Head
Valve Clearance Adjustment
(cont’d)
Crankshaft Pulley Removal and
Installation
A
07JAB-001020A B
07NAB-001040A
C
07JAA-001020A
(or commercially
available)
9. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
10. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
11. Rotate the crankshaft 180 ° clockwise (camshaft pulley turns 90 °).
12. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.
13. Install the cylinder head cover (see page 6-37). Holder handle 07JAB-001020A
Holder Attachment, 50 mm 07NAB-001040A
Socket, 19 mm 07JAA-001020A or a commercially
available19mmsocket
1. Remove the right front wheels.
2. Remove the splash shield (see step 25 on page 5-5).
3. Remove the drive belt (see page 4-31).
4. Hold the crankshaft pulley with holder handle (A) and holder attachment (B).
5. Remove the bolt with a socket, 19 mm (C) and a breaker bar, then remove the crankshaft pulley.
08/08/21 14:26:32 61SNR030_060_0016
ProCarManuals.com
DYNOMITE -2009-