Acura RSX Honda Integra. Manual — part 48

０１

Ｓ６Ｍ６Ａ００Ａ１４６６６３０００００ＭＦＡＴ００

K20A3 engine (2002 model):

6-36

Cylinder Head

Rocker Arm and Shaft Disassembly/Reassembly

EXHAUST ROCKER
SHAFT

EXHAUST ROCKER ARM

WASHER

No. 1 CAMSHAFT
HOLDER

RUBBER
BAND

No. 2
CAMSHAFT
HOLDER

No. 3
CAMSHAFT
HOLDER

No. 4
CAMSHAFT
HOLDER

INTAKE ROCKER
ARM ASSEMBLY

No. 5 CAMSHAFT
HOLDER

INTAKE ROCKER SHAFT

NOTE:

• Identify parts as they are removed to ensure reinstallation in their original location.
• Inspect the rocker shafts and rocker arms (see page 6-39).
• The rocker arms must be installed in the same positions if reused.
• When removing or installing the rocker arm assembly, do not remove the camshaft holder bolts. The bolts will keep

the holders, springs, and rocker arms on the shaft.

• Prior to reassembling, clean all the parts in solvent, dry them, and apply new engine oil to any contact points.
• Bundle the rocker arms with rubber bands to keep them together as a set.
• When replacing the VTEC rocker arm assembly, remove the fastening hardware from the new VTEC rocker arm

assembly.

０１

K20A3 engine (2003-2006 models):

6-37

EXHAUST ROCKER
SHAFT

EXHAUST ROCKER ARM

No. 1 CAMSHAFT
HOLDER

RUBBER
BAND

No. 2
CAMSHAFT
HOLDER

No. 3
CAMSHAFT
HOLDER

No. 4
CAMSHAFT
HOLDER

INTAKE ROCKER
ARM ASSEMBLY

No. 5 CAMSHAFT
HOLDER

INTAKE ROCKER SHAFT

(cont’d)

０２

K20A2, K20Z1 engines:

6-38

Cylinder Head

Rocker Arm and Shaft Disassembly/Reassembly (cont’d)

EXHAUST ROCKER
SHAFT

EXHAUST ROCKER
ARM ASSEMBLY

No. 1 CAMSHAFT
HOLDER

RUBBER
BAND

No. 2
CAMSHAFT
HOLDER

No. 3
CAMSHAFT
HOLDER

No. 4
CAMSHAFT
HOLDER

INTAKE ROCKER
ARM ASSEMBLY

No. 5 CAMSHAFT
HOLDER

INTAKE ROCKER SHAFT

RUBBER
BAND

０１

０２

０３

Ｓ６Ｍ６Ａ００Ａ１４６６６３５１５１１ＭＡＡＴ００

−

−

−

−

−

−

Rocker Arm-to-Shaft Clearance
K20A3 Engine:
Standard (New):
Intake:

0.025

0.052 mm

(0.0010

0.0020 in.)

Exhaust:

0.018

0.056 mm

(0.0007

0.0022 in.)

Service Limit:

0.08 mm (0.003 in.)

K20A2, K20Z1 Engines:
Standard (New): 0.025

0.052 mm

(0.0010

0.0020 in.)

Service Limit:

0.08 mm (0.03 in.)

6-39

Rocker Arm and Shaft Inspection

A

1. Remove the rocker arm assembly (see page 6-35),

then disassemble the rocker arm assembly
(see page 6-36).

2. Measure the diameter of the shaft at the first rocker

location.

3. Zero the gauge (A) to the shaft diameter.

4. Measure the inside diameter of the rocker arm, and

check it for an out-of-round condition.

5. Repeat for all rocker arms and both shafts. If the

clearance is over the limit, replace the rocker shaft
and all overtolerance rocker arms. If any VTEC
rocker arm needs replacement, replace rocker arms
(primary and secondary, or primary, mid, and
secondary) as a set.

(cont’d)