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Cylinder Head
Camshaft Inspection
NOTE: Do not rotate the camshaft during inspection.
1. Remove the dipstick, positive crankcase ventilation
{PCV) hose and breather hose (see step 18 on page
6-28).
2. Remove the ignition coil cover,then removethe
ignition coils (see step 19 on page 6-28).
3. Remove the cylinder head cover (see step 21 on
page 6-29).
4, Loosen the rocker arm adjusting screws (see step
27 on page 6-30).
5. Remove the camshaft holders and camshafts.
6. Insert the bolts into the rocker shaft holder, then
remove the rocker arm assembly (see step 29 on
page 6-30).
7. Disassemble the rocker arm assembly.
8. Put the rocker shaft holders, camshafts and the
camshaft holders on the cylinder head, then tighten
the bolts to the specified torque.
Specified torque:
8 x 1.25 mm
22 N.m (2.2 kgt.m, 16lbf.ft)
Apply engine oilto the bolt threads.
9. Seat the camshafts by pushing them toward the
rear end of the cylinder head.
6-36
1 5 .
1 0 . 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, then push the camshaft back and forth
and read the end play. lf the end play is beyond the
service limit, replace the cylinder head and recheck.
lf it is still beyond the service limit, replace the
camshaft,
Camshaft End Play:
Standard (Newl: 0.05 0.15 mm
(0.002 0.006 in.)
Service Limit:
0.30 mm (0.012 in.)
11. U nscrew the camshaft holder bolts two turns at a
time, in a crisscross pattern. Then remove the
camshaft holders and the rocker shaft holders from
t h e c y l i n d e r h e a d .
12. Lift the camshafts out of the cylinder head, wipe
them clean, then inspect the lift ramps. Replace the
camshaft if any lobes are pitted, scored, or
excessrvely worn.
13. Remove the camshaft mounting bolts (A), dowel
pins (B) and camshaft plates (C) on both camshafts.
W i p e t h e m c l e a n a n d l u b r i c a t e t h e m o u n t i n g b o l t
threads with clean engine oil. Torque the bolts to
3 9 N . m ( 4 . 0 k g f m , 2 9 l b f . f t ) .
Clean the camshaftjournal surfaces in the cylinder
head, then set the camshafts back in place. Place a
p l a s t i g a g e s t r i p a c r o s s e a c h j o u r n a l .
Installthe camshaft holders, then tighten the bolts
to the specified torque as shown in step 7.
39 N.m
(4.0 kgf.m,
29 rbf.ft).
1 4 .
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Troubleshooting
