Komatsu PC18MR-3, Operation & Maintenance Manual

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MAINTENANCE PROCEDURES
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4.9.1.d DRAINING THE FUEL TANK
WARNING
q
When draining the fuel tank, avoid spilling fuel, since this may cause fires.
q
If some fuel is accidentally spilled, clean the dirty area immediately, in order to prevent it from getting
slippery and to avoid fires.
1. Swing the revolving frame so that the drain valve (1) is
positioned between the tracks.
2. Open the radiator cover. For details, see paragraph "3.2.7
RADIATOR COVER".
3. Open the drain valve (1) and drain the sediments and water
collected at the bottom together with the fuel.
Collect fuel and sediments into a container with suitable
capacity.
4. When clean fuel flows out, close the drain valve (1).
IMPORTANT
q
The tank must be drained before starting the engine, with
temperatures exceeding 0°C; when the temperature is be-
low 0°C, the tank must be drained at the end of work or in
any case with the machine at operating temperature, in or-
der to prevent the condensate from freezing.
q
The condensate and the impurities that may have accumu-
lated inside the tank must be drained before refuelling.
q
Never use trichloroethylene to wash the inside of the tank.
Use exclusively diesel oil.
4.9.1.e CHECKING AND ADJUSTING THE STEEL TRACK TENSION
The pins and bushings of the undercarriage wear out to different degrees, depending on the work conditions and
on the characteristics of the surface on which the machine works. Therefore it is necessary to check the track ten-
sion frequently and to adjust it when necessary.
IMPORTANT
q
To carry out the check and the corresponding maintenance operation, stop the machine on firm and lev-
el ground. Check both tracks.
CHECK
1. With the engine idling, move the machine forward of a
distance corresponding to the length of the track on the
ground, then lower the equipment to the ground and stop the
engine.
2. Choose a perfectly flat rod (3) long enough to cover the
distance between the idler roller (1) and the track sliding plate
(2), then position it on the track.
3. Measure the maximum deflection between the upper surface
of the track and the lower surface of the rod.
q
Standard deflection
The deflection value “ a “ should be included between 5 and
15 mm.
If the track tension does not correspond to the standard value, ad-
just it by proceeding as indicated below.