Komatsu Utility WB97S-5, Operation & Maintenance Manual

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MAINTENANCE PROCEDURES
197
4.8.3 CHECKS TO BE CARRIED OUT BEFORE STARTING THE ENGINE
4.8.3.a VARIOUS CHECKS
WARNING
q
Dirt, oil and fuel in the engine compartment near hot parts may damage the machine and even cause
fires.
Check frequently and eliminate any leakage; if leakages occur repeatedly, contact your Komatsu Dealer.
Before starting the engine, proceed as follows:
1. Check for loose screws or nuts.
2. Check for oil, fuel or coolant leakages.
3. Check for unusual wear, deformation or cracks.
4. Check the condition of the rims and the condition and wear of the tyres.
5. Make sure that instruments, lights, work lights and direction indicators work correctly.
The other general checks concern safety:
6. Check the soundness of the safety belt.
7. Check the soundness and legibility of the warning plates.
8. Make sure that the ladders and handles used to reach the driver’s seat and the inside of the cab are clean.
4.8.3.b CHECKING THE COOLANT LEVEL
WARNING
q
Do not remove the radiator cap; the coolant level must be
checked with cold engine, through the expansion tank.
The coolant level must be checked on the expansion tank (1),
when the engine is cold, and must be included between the MIN.
and MAX. reference marks. Check the level through the hole
positioned on the right side of the engine hood: the coolant level
must exceed the MIN. reference mark.
If the level is near the MIN. mark, fill the tank with coolant, and if
the level decreases considerably and constantly, check the
radiator-engine seals and the radiator body for leaks and check
the fluid level in the radiator (see "4.8.6.b CHECKING THE FLUID
LEVEL IN THE RADIATOR").
The expansion tank (1) can be reached after opening the engine
hood (see "3.5.1 ENGINE HOOD").
RKAB6420
RKAB3790
1
MAX.
MIN.
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