1996 ACURA RL KA9 Service Repair Manual

Rocker Ar m Assembl y
Removal
NOTE:
• T o preven t damag e t o th e valve s o r rocke r ar m assem -
bly , unscre w th e camshaf t holde r bolt s tw o turn s a t a
tim e i n a crisscros s pattern .
• Whe n removin g th e rocke r ar m assembly , d o no t
remov e th e camshaf t holde r bolts . Th e bolt s wil l kee p
the camshaf t holders , th e spring s an d th e rocke r arm s
o n th e shafts .
CAMSHAF T HOLDE R BOLT S LOOSENIN G SEQUENCE :
NOTE: Refe r t o pag e 6-3 6 whe n installing .
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Camshaft

Inspection

NOTE:

• Do not rotate the camshaft during inspection.

• Remove the rocker arms and rocker shafts.

1. Put the camshaft and the camshaft holders on the

cylinder head, then tighten the bolts to the specified

torque.

Specified torque:

8 mm bolts: 22 N-m (2.2 kgf-m, 16 Ibf-ft)

6 mm bolts: 12 N-m (1.2 kgf-m, 8.7 Ibf-ft)

8 mm bolts:

2. Seat the camshaft by pushing it toward the rear of

the cylinder head.

3. Zero the dial indicator against the rear of the cam-

shaft. Push the camshaft back and forth, and read

the end play.

Camshaft End Play:

Standard (New): 0.05 - 0.15 mm

(0.002 - 0.006 in)

Service Limit: 0.15 mm (0.006 in)

CAMSHAFTProCarManuals.com

4. Remove the bolts, then remove the camshaft hold-

ers from the cylinder head.

5. Lift the camshaft out of the cylinder head, wipe it

clean, then inspect the lift ramps. Replace the

camshaft if any lobes are pitted, scored, or excessively

worn.

6. Clean the camshaft bearing surfaces in the cylinder

head, then set the camshaft back in place.

7. Place a plastigage strip across each journal.

8. Install the camshaft holders, then tighten the bolts

to the specified torque shown on the previous page.

9. Remove the camshaft holders. Measure the widest

portion of plastigage on each journal.

PLASTIGAGE STRIP
If camshaft-to-holder oil clearance is out of toler-

ance:

And the camshaft has already been replaced,

you must replace the cylinder head.

If the camshaft has not been replaced, first check

the total runout with the camshaft supported on

V-blocks.

Rotate camshaft

while measuring.

If the total runout of the camshaft is within toler-

ance, replace the cylinder head.

If the total runout is out of tolerance, replace the

camshaft and recheck. If the oil clearance is still

out of tolerance, replace the cylinder head.

11. Check cam lobe height wear.

Check this area for wear.
Cam Lobe Height Standard (New):

INTAKE 40.175 mm (1.5817 in)

EXHAUST 37.878 mm (1.4913 in)
Camshaft Total Runout:

Standard (New): 0.03 mm (0.001 in) max.

Service Limit: 0.04 mm (0.002 in)

Camshaft-to-Holder Oil Clearance:

Standard (New): 0.050 - 0.089 mm

(0.0020 - 0.0035 in)

Service Limit: 0.10 mm (0.004 in)ProCarManuals.com