Acura RSX Honda Integra. Manual — part 41
03
04
S6M6A10A14666351511FEAT00
Specified Air Pressure:
290 kPa (3.0 kgf/cm , 42 psi)
2
K20A2, K20Z1 Engines
6-8
6-8
Cylinder Head
VTEC Rocker Arm Test (cont’d)
B
A
A
B
11. Loosen the valve on the regulator, and apply the
specified air pressure.
NOTE: If the synchronizing piston does not move
after applying air pressure; move the primary or
secondary rocker arm up and down manually by
rotating the crankshaft clockwise.
12. With the specified air pressure applied, move the
intake primary rocker arm (A) for the No. 1 cylinder.
The primary rocker arm and secondary rocker arm
(B) should move together.
• If the intake secondary rocker arm does not move,
remove the primary and secondary rocker arms
as an assembly, and check that the pistons in the
primary and secondary rocker arms move
smoothly. If any rocker arm needs replacing,
replace the primary and secondary rocker arms
as an assembly, and test.
13. Remove the special tools.
14. Tighten the camshaft holder mounting bolts to
22 N·m (2.2 kgf·m, 16 lbf·ft).
15. Tighten the sealing bolt to 20 N·m (2.0 kgf·m,
14 lbf·ft).
16. Install the cylinder head cover (see page 6-29).
1. Start the engine and let it run for 5 minutes, then
turn the ignition switch OFF.
2. Remove the cylinder head cover (see page 6-28).
3. Set the No. 1 piston at TDC (see step 1 on page
6-14).
4. Move the secondary rocker arm (A) for No. 1
cylinder. The secondary rocker arm should move
independently of the mid rocker arm (B).
• If the secondary rocker arm does not move,
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, and
test.
• If the secondary rocker arm moves freely, go to
step 4.
5. Repeat step 3 on the remaining secondary rocker
arms with each piston at TDC. When all the
secondary rocker arms pass the test, go to step 5.
6. Check that the air pressure on the shop air
compressor gauge indicates over 400 kPa
(4.0 kgf/cm , 57 psi).
7. Inspect the valve clearance (see page 6-11).
2
05
06
Specified Air Pressure:
290 kPa (3.0 kgf/cm , 42 psi)
2
6-9
E
07AAJ-PNAA100
D
07ZAJ-PNAA300
B
07ZAJ-PNAA200
C
07ZAJ-PNAA100
A
C
A
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 air pressure
regulator (E).
11. Loosen the valve on the regulator, and apply the
specified air pressure.
NOTE: If the synchronizing piston does not move
after applying air pressure; move the rocker arm up
and down manually by rotating the crankshaft.
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 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, and
retest.
13. Remove the special tools.
14. Tighten the camshaft holder mounting bolts to
22 N·m (2.2 kgf·m, 16 lbf·ft).
15. Tighten the sealing bolt to 20 N·m (2.0 kgf·m,
14 lbf·ft).
16. Install the cylinder head cover (see page 6-29).
01
02
03
S6M6A00A14680463351MAAT00
6-10
Cylinder Head
VTC Actuator Inspection
A
B
1. Remove the cam chain (see page 6-14).
2. Loosen the rocker arm adjusting screws (see step 2
on page 6-35).
3. Remove the camshaft holder (see step 3 on page
6-35).
4. Remove the intake camshaft.
5. Check that the variable valve timing control (VTC)
actuator is locked by turning the VTC actuator
clockwise and counterclockwise. If the VTC actuator
is not locked, replace the VTC actuator.
6. Seal the advance holes (A) and retard holes (B) in
the No. 1 camshaft journal with the 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. Make sure the punch marks on the VTC actuator
and exhaust camshaft sprocket are facing up, then
set the camshafts in the rocker shaft holder (see
step 6 on page 6-50).
11. Set the camshaft holders and chain guide B in place
(see step 7 on page 6-50).
12. Tighten the camshaft holder bolts to the specified
torque (see step 8 on page 6-50).
13. 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.
14. Install the cam chain (see page 6-17).
15. Adjust the valve clearance (see page 6-11).
02
01
02
S6M6A00A14680200000MBAT00
−
−
−
−
−
−
−
−
Special Tools Required
Valve Clearance
K20A3 Engine:
Intake:
0.21
0.25 mm (0.008
0.010 in.)
Exhaust:
0.28
0.32 mm (0.011
0.013 in.)
K20A2, K20Z1 Engines:
Intake:
0.21
0.25 mm (0.008
0.010 in.)
Exhaust:
0.25
0.29 mm (0.010
0.011 in.)
6-11
Valve Clearance Adjustment
A
C
B
No. 1
No. 2
No. 3
No. 4
No. 1
No. 2
No. 3
No. 4
EXHAUST
INTAKE
A
B
• Tappet adjust wrench set 07MAA-PR70100
NOTE: Adjust the valves only when the cylinder head
temperature is less than 100 °F (38 °C).
1. Remove the cylinder head cover (see page 6-28).
2. Set the No. 1 piston at TDC. The punch mark (A)
marked with an arrow 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
exhaust camshaft sprocket.
3. Select the correct thickness feeler gauge for the
valves you’re going to check.
4. Insert the feeler gauge (A) between the adjusting
screw (B) and the end of the valve stem, and slide it
back and forth; you should feel a slight amount of
drag.
(cont’d)
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