Infiniti I30 (A33). Manual — part 477
SEM919E
30. Remove internal chain guide.
31. Remove upper chain guide.
32. Remove timing chain tensioner and slack side chain guide.
SEM966F
I
Remove timing chain tensioner. (Push piston and insert a suit-
able pin into pinhole.)
SEM004G
33. Remove RH & LH camshaft sprocket 1ST bolts.
34. Remove camshaft sprockets 1ST on both sides, crankshaft
sprocket and timing chain.
I
Apply paint to timing chain and camshaft sprockets 1ST
for alignment during installation.
GI
MA
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TIMING CHAIN
Removal (Cont’d)
EM-27
SEM927EA
35. Attach a suitable stopper pin to RH and LH camshaft chain
tensioners.
SEM922E
36. Remove exhaust camshaft sprocket 2ND bolts on both sides.
I
Apply paint to timing chain and camshaft sprockets 2ND
for alignment during installation.
SEM160F
37. Remove exhaust camshaft sprockets 2ND, intake camshaft
sprockets 2ND and camshaft chains on both sides.
SEM924E
38. Remove lower chain guide.
TIMING CHAIN
Removal (Cont’d)
EM-28
SEM925E
39. Use a scraper to remove all traces of liquid gasket from front
timing chain case.
SEM161F
I
Remove old liquid gasket from the bolt hole and thread.
SEM926E
40. Use a scraper to remove all traces of liquid gasket from water
pump cover.
SEM928E
Inspection
NHEM0013
Check for cracks and excessive wear at roller links. Replace
chain if necessary.
SEM929E
Installation
NHEM0014
1.
Install crankshaft sprocket on crankshaft.
I
Make sure that mating marks on crankshaft sprocket face
front of engine.
GI
MA
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TIMING CHAIN
Removal (Cont’d)
EM-29
SEM930E
2.
Position crankshaft so that No. 1 piston is set at TDC on com-
pression stroke.
SEM931E
3.
Install lower chain guide on dowel pin, with front mark on the
guide facing upside.
SEM162F
4.
Align the marks on RH and LH intake camshaft sprockets 2ND,
exhaust camshaft sprockets 2ND and camshaft chain, as
shown.
5.
Put LH camshaft dowel pin into camshaft sprocket dowel
groove and install these on camshaft. Tighten LH exhaust
camshaft sprocket 2ND bolt.
6.
Put RH camshaft dowel pin in camshaft sprocket dowel groove
and install sprocket on camshaft.
7.
Tighten RH exhaust camshaft sprocket 2ND bolt.
I
Make sure that the timing marks on RH and LH intake
camshaft sprockets 2ND are aligned with the camshaft
chain mark.
I
Lubricate threads and seat surfaces of camshaft sprocket
bolts with new engine oil.
SEM932E
I
Be careful not to confuse intake and exhaust camshaft
sprockets 2ND (their thicknesses are different).
TIMING CHAIN
Installation (Cont’d)
EM-30
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