Chain ACURA CSX 2006 Service User Guide

ÎK20Z2 engine
6-4Cylinder Head
Component Location Index (cont’d)
CAM CHAIN GUIDE B
INTAKE CAMSHAFT VTC ACTUATOR
EXHAUST CAMSHAFT
SPROCKET EXHAUST CAMSHAFT
ROCKER ARM ASSEMBLY
CAMSHAFT HOLDERS
DOWEL PINS
CAMSHAFT POSITION
(CMP) SENSOR A
(INTAKE) O-RING
DOWEL PINS
O-RING
CMP PULSE PLATE B
CMP PULSE PLATE A
CAMSHAFT POSITION
(CMP) SENSOR B
(EXHAUST) Inspection, page 6-50
Inspection, page 6-11
Replacement,page 6-42
Replacement, page 6-42 Inspection, page 6-50
VTEC Rocker Arm Test, page 6-8
Rocker Arm Assembly Removal, page 6-43
Rocker Arm and Shaft Disassembly/
Reassembly, page 6-46
Rocker Arm and Shaft Inspection, page 6-48
Rocker Arm Assembly Installation, page 6-60
Replacement,
page 6-41
Replacement, page 6-41
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ÎK20Z3 engine
6-5
CAM CHAIN GUIDE B
EXHAUST CAMSHAFT
SPROCKET
EXHAUST CAMSHAFT
CAMSHAFT HOLDERS
DOWEL PINS
CAMSHAFT POSITION
(CMP) SENSOR A
(INTAKE)
CMP SENSOR B
(EXHAUST)
O-RING
DOWEL PINS
O-RING
CMP PULSE PLATE A INTAKE CAMSHAFT
VTC ACTUATOR
CMP PULSE PLATE B 6 x 32 mm FLANGE BOLT
(Not on all engines)
ROCKER ARM ASSEMBLY
(cont’d)
Replacement,page 6-42
Inspection, page 6-52
Replacement,
page 6-41 Inspection, page 6-52
Inspection,page 6-11
Replacement, page 6-42
Replacement,
page 6-41
VTEC Rocker Arm Test,page 6-9
Rocker Arm Assembly Removal, page 6-44
Rocker Arm and Shaft Disassembly/ Reassembly, page 6-47
Rocker Arm and Shaft Inspection, page 6-49
Rocker Arm Assembly Installation, page 6-61
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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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 M/T model
A/T model
6-18
Cylinder Head
Cam Chain Removal
C
A
B
B
A
C A
A
NOTE: Keep the cam chain away from magnetic fields. 1. Remove the front wheels.
2. Remove the splash shield (see step 25 on page 5-5).
3. Remove the drive belt (see page 4-31).
4. Remove the cylinder head cover (see page 6-36).
5. 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.
6. Disconnect the crankshaft position (CKP) sensor connector (A) and the VTC oil control solenoid
valve connector (B), and remove the harness
clamps (C). 7. Remove the VTC oil control solenoid valve
(see page 11-294).
8. Remove the crankshaft pulley (see page 6-16).
9. Support the engine with a jack and a wood block under the oil pan.
10. Remove the upper torque rod (A).
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6-19
A
B A
B
11. Remove the ground cable (A), then remove the side
engine mount bracket (B).
12. Remove the side engine mount bracket. 13. Remove the cam chain case (A), then remove the
CKP pulse plate (B).
14. Loosely install the crankshaft pulley.
15. Turn the crankshaft counterclockwise to compress the auto-tensioner.
(cont’d)
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6-20Cylinder Head
Cam Chain Removal (cont’d)
A
BC
A
B
16. Align the holes on the lock (A) and the auto- tensioner (B), then insert a 1.2 mm (0.05 in.)
diameter pin or lock pin (P/N 14511-PNA-003) (C)
into the holes. Turn the crankshaft clockwise to
secure the pin.
NOTE: Check the auto-tensioner cam position. If the
position is not aligned, set the first cam to the first
edge of the rack (see step 8 on page 6-22).
17. Remove the auto-tensioner, then remove the crankshaft pulley. 18. Remove cam chain guide B.
19. Remove cam chain guide A and the tensioner
arm (B).
20. Remove the cam chain.
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Special Tools Required
6-21
Cam Chain Installation
A
B
C A
B B
D
C A
B A
Camshaft lock pin set 07AAB-RWCA120
NOTE: Keep the cam chain away from magnetic fields.
 Before doing this procedure, 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.
1. Set the crankshaft to top dead center (TDC). Align the TDC mark (A) on the crankshaft sprocket with
the pointer (B) on the engine block.
2. Set the camshafts to TDC. The punch mark (A) on the 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. To hold the intake camshaft, insert a camshaft lock
pin (07AAB-RWCA120) (A) into the maintenance
hole in camshaft position (CMP) pulse plate A (B)
and through No. 5 rocker shaft holder (C).
4. To hold the exhaust camshaft, insert a camshaft lock pin (A) into the maintenance hole in CMP pulse
plate B (D) and through No. 5 rocker shaft holder
(C).
5. Install the cam chain on the crankshaft sprocket with the colored link plate (A) aligned with the mark
(B) on the crankshaft sprocket.
(cont’d)
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6-22Cylinder Head
Cam Chain Installation (cont’d)
B
A A
B 6x1.0mm
12 N·m
(1.2 kgf·m,
8.7 lbf·ft)
8x1.25mm
22 N·m
(2.2 kgf·m,
16 lbf·ft) C
D B
A
E
F
8x1.25mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
6. Install the cam chain on the VTC actuator and theexhaust camshaft sprocket with the punch marks
(A) aligned with the two colored link plates (B).
7. Install cam chain guide A and the tensioner arm (B). 8. Compress the auto-tensioner when replacing the
cam chain. Remove the pin from the auto-tensioner.
Turn the plate (A) counterclockwise, to release the
lock, then press the rod (B), and set the first cam (C)
to the first edge of the rack (D). Insert the 1.2 mm
(0.05 in.) diameter pin (E) into the holes (F).
NOTE: If the chain tensioner is not set up as
described, the tensioner will be damaged.
9. Install cam chain guide B.
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6-23
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
10. Install the auto-tensioner.
11. Remove the pin or lock pin (P/N 14511-PNA-003) from the auto-tensioner. 12. Remove the camshaft lock pin set (07AAB-
RWCA120).
13. Install the crankshaft position (CKP) pulse plate.
14. Check the chain case oil seal for damage. If the oil seal is damaged, replace the chain case oil seal
(see page 6-31).
15. Remove all of the old liquid gasket from the chain case mating surfaces, bolts, and bolt holes.
(cont’d)
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6-24
Cylinder Head
Cam Chain Installation (cont’d)
A
B
B
A
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
A B
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft) D B
C
16. Clean, and dry the chain case mating surfaces.
17. Apply liquid gasket, P/N 08717-0004, 08718-0001, 08718-0003, or 08718-0009, evenly to the engine
block mating surface of the chain case, and to the
inside edge of the threaded bolt holes. Install the
component within 5 minutes of applying the liquid
gasket.
NOTE: If you apply liquid gasket P/N 08718-0012, the component must be installed within 4 minutes.
 If too much time has passed after applying the liquid gasket, remove the old liquid gasket and
residue, then reapply new liquid gasket.
18. Apply liquid gasket to the engine block upper surface contact areas (A) on the chain case and
lower block upper surface contact areas (B) on the
chain case.
19. Apply liquid gasket, P/N 08717-0004, 08718-0001, 08718-0003, or 08718-0009, evenly to the oil pan
mating surface of the chain case, and to the inside
edge of the threaded bolt holes. Install the
component within 5 minutes of applying the liquid
gasket.
NOTE: If you apply liquid gasket P/N 08718-0012, the component must be install within 4 minutes.
 If too much time has passed after applying the liquid gasket, remove the old liquid gasket and
residue, then reapply new liquid gasket. 20. Install the new O-ring (A) on the chain case. Set the
edge of the chain case (B) to the edge of the oil pan
(C), then install the chain case on the engine block
(D). Wipe off the excess liquid gasket on the oil pan
and chain case mating surface.
NOTE: When installing the chain case, do not slide the bottom surface onto the oil pan mounting surface.
 Wait at least 30 minutes before filling the engine with oil.
 Do not run the engine for at least 3 hours after installing the chain case.
Apply liquid gasket
along the broken line.
Apply liquid gasket
along the broken line.
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