Fiat Kobelco EX355 Tier2, Technical Manual

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EX355 W5-2-5
MAINTENANCE
COOLING SYSTEM
Fan Belt Inspection
Check the drive belt tension. Depress the drive belt
mid-portion with a 100 N (10kg/22 lb) force.
Drive Belt Deflection: 8 - 11 mm (0.31 - 0.43 in)
Check the drive belts for cracking and other damage.
SM7026
Alternator
Water pump
Crankshaft
VALVE CLEARANCE ADJUSTMENT
The following instructions assume that valve clear-
ance is adjusted beginning with the No. 1 piston at top
dead center (TDC) on the compression stroke.
Check the alignment timing mark between the timing
advancer and the mark line on the injection pump
body. If the timing marks are aligned, the No. 1 piston
is at TDC on the compression stroke.
Valve clearance must be adjusted when the engine is
cold.
When removing the head cover, wipe off spilled oil
with a rag.
1. Bring the piston in the No. 1 or No. 6 cylinder to the
top dead center on the compression stroke by
turning the crankshaft until the T.D.C. line on the
damper is aligned with the timing pointer on the
front cover.
Check the rocker arm shaft bracket nuts for loose-
ness and retighten as necessary before adjusting
the valve clearance.
SM7027
2. Check that the No. 1 intake and exhaust rocker
arms have play. If they have play, it indicates that
the No. 1 piston is at TDC (Top Dead Center) on
the compression stroke. If the No. 1 exhaust
valves are depressed, the No. 6 piston is at TDC
on the compression stroke.
3. Adjust valve clearances for the No. 1 or No. 6
cylinder which its piston is at TDC on compression
stroke.
a. Loosen each adjusting screw on the bridge and
rocker arm.
SM7023
Pointer