Operational and Maintenance Manual G11 Series
7.4 Checking and Adjustment of Valve
clearance
Adjust the valve clearance when engine is in cold
condition. Adjust the clearance with piston at top
dead center and ensure that both valves are
closed. Clearance is 0.4 mm. for both inlet and
exhaust valves.
Fig.68 Checking and adjustment of Valve Clearance
7.5 Flywheel Run out
Flywheel run out on face to be maintained as 0.2
mm. Flywheel coupling mounting bore run out wrt.
Crank shaft axis 0.10 mm max
Fig. 69 Flywheel Run outs
7.6 Timing Gear
Except water pump and oil pump gear, all other
gears in the gear train has timing markings, which
need to be aligned to get correct fuel injection and
valve timing. FIP gear has kidney slots and it is
mounted on coupling flange on FIP shaft with four
bolts. The finer adjustment of injection timing can
be made by loosening these bolts and turning FIP
shaft as required in any desired direction.
Idler gear matching with crank gear, match idler
gear ‘0’ and matching with crank gear ‘0’.
Locate cam gear in dowel & ensure matching of
mark ‘1’ mark on cam gear matching with ‘1-1’
marking of idler gear.
Fig.70 Engine gear train
7.7 Maintenance of cooling system
The engine cooling system contains gear driven
water pump, cooling passages on the engine and
cylinder head, water manifold, thermostat, radiator,
fan and lube oil cooler (which is cooled by engine
water)
The water used should be clean, free from dirt or
dust, floating matter, colorless, without smell. Add
Greaves supplied coolant in correct proportion for
efficient cooling of the system. Bad water can
cause severe corrosion. These corrosion products
can block cooling system and severely damage the
engine.
Hard water can completely chock up the cooling
system with scale formation, salts, sulfates and
other compounds. This can cause engine seizure.
Never use concentrated acidic compounds or soda
lime to clean up the cooling system.
7.8 Battery Checking Instructions
The battery is of lead acid type. After 150 hours of
running it should receive the attention as follows:
1.
Brush the dirt from the battery.
2.
Remove the vent plugs.
3.
Check the level of Acid.
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