Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

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6A2-62 ENGINE MECHANICAL (H25 ENGINE)
INSTALLATION
1) Before installing valve lash adjuster to cylinder head (1), fill
oil passage of cylinder head with engine oil according to fol-
lowing procedure.
Pour engine oil through oil holes (2) and check that oil comes
out from oil holes in sliding part of valve lash adjuster.
Perform this check on both intake and exhaust sides.
2) Valve lash adjuster (1) to cylinder head (2).
Apply engine oil around valve lash adjuster and then install it
to cylinder head.
CAUTION:
• Don’t turn camshafts or start engine (i.e., valves
should not be operated) for about half an hour after
reinstalling hydraulic valve lash adjusters and cam-
shafts. As it takes time for valves to settle in place,
operating engine within half an hour after their installa-
tion may cause interference to occur between valves
themselves or valves and piston.
• If air is trapped in valve lash adjuster, valve may make
tapping sound when engine is operated after valve
lash adjuster is installed. In such a case, run engine for
about half an hour at about 2,000 – 3,000 r/min., and
then air will be purged and tapping sound will cease.
Should tapping sound not cease, it is possible that
valve lash adjuster is defective. Replace it if defective.
If defective adjuster can’t be located by hearing among
24 of them, check as follows.
– Stop engine and remove cylinder head cover.
– Push adjuster downward by hand (with less than 20
kg or 44 lbs force) when cam crest is not on adjuster
to be checked and check if clearance exists between
cam and adjuster. If it does, adjuster is defective and
needs replacement.