Acura 1994 Integra Service Manual page 82

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1 .
2 .
Camshafts
Inspection
Loosen the adjusting screws.
Remove the camshaft holders and the rocker arms
N O T E : M a r k t h e r o c k e r a r m s b e f o r e r e m o v i n g
t h e m .
R e i n s t a l l t h e c a m s h a f t a n d h o l d e r s . T i g h t e n t h e
camshaft holder bolts in a crisscross pattern, begin-
ning with the inner bolts.
9.8 N.m (1.0 kgf.m,7.2 lbf.ft)
Seat the camshafts by pushing them toward the dis-
tributor end of the head with a screwdriver.
Z e r o t h e d i a l i n d i c a t o r a g a i n s t t h e e n d o f t h e
camshaft. push the camshaft back and forth and
read the end play.
Camshalt End Play:
St.ndard lNow): 0.05 - 0.15 mm
(0.002 - 0.006 inl
Seivice Limit:
0.5 mm {0,02 in)
Remove the camshaft holder bolts from the cylinder
head.
N O T E : U n s c r e w t h e c a m s h a f t h o l d e r b o l t s t w o
turns at a time, in a crisscross pattern.
Lift the camshafts out ot the cylinder head. wipe
them clean, then inspect the lift ramps. Replace the
camshaft if any lobes are pitted, scored, or exces-
srvely worm
Clean the camshaft journal surfaces in the cylinder
head, then set the camshaft back in place. Insert a
plastigage strip across each iournal.
Install the camshaft holders and torque the bolts to
the values and in the sequence shown on page 6-30.
NOTE: Do not rotate camshafts during inspection.
6-21
1 0 . Remove the camshaft holders. Measure the widest
ponion of plastigage on each journa..
Camshaft-to Holder Oil Clearance:
Standard lNewl: 0.039 - 0.069 mm
(0.0015 - 0.0027 in)
Sarvico Limit
0.15 mm {0.006 inl
11. lf camshaft-to-holder oil clearance is out of toler
ance:
. And the camshaft has already been replaced,
vou must replace the cylinder head.
. lf the camshaft has not been replaced, first check
total runout with the camshaft supported on V-
blocks.
Clmshaft Total Runout:
StEndard {New): 0.03 mm (0.001 inl max'
Servico Limit:
o.Oil mm {0.002 inl
-
lf the total runout of the camshafts is within tol-
erance, replace the cylinder head.
-
lf the total runout is out of tolerance, replace the
camshafts and recheck. lf the oil clearance is still
out of tolerance. replace the cylinder head.
PLASTIGAGE