EG-15
PRECAUTIONS FOR WORK
PRECAUTIONS FOR WORK
Precautions for Draining Coolant
Drain the coolant after its temperature lowers sufficiently.
Precautions for Separating Fuel Piping
• Work in a place where there is nothing to start a fire.
• Release the fuel pressure in advance.
• After separating the fuel piping, plug it to prevent the fuel from
flowing out.
Precautions for Removal and Disassembly
• If specified, use correct special tools and pay attention. Do not
apply an excessive force.
• Take extreme care not to lower the accuracy of the mating
faces, sliding faces, etc.
• If necessary, cover the openings with tapes, etc. to prevent
foreign matter from entering the engine.
• Make marks on the removed parts and arrange them for secure
troubleshooting and assembly.
• As a rule, loosen the bolts and nuts from outside in the diagonal
direction. If the loosening order is specified, observe it.
Precautions for Checking, Repairing, and
Replacing Parts
Before repairing or replacing parts, check them sufficiently according
to the check procedure. Check the new parts similarly and replace
them if necessary.
Precautions for Assembling and Installing
Parts
• When tightening the bolts and nuts, be sure to use torque
wrenches.
• As a rule, tighten the bolts and nuts from inside to outside in the
diagonal direction in 2 – 3 times. If the tightening order is
specified, observe it.
• Replace the gaskets, packings, oil seal, and O-rings with new
ones.
• Clean each part and dry it by blowing compressed air against it.
In particular, take care that the oil passages and coolant
passages will not be clogged.
• Take care not to damage the sliding surfaces and mating faces,
and remove all dirt, lint, etc. from them. Apply sufficient oil to the
sliding surface before assembling.
• If the coolant is drained, bleed air from the coolant system.
• After repairing, run the engine at high speed and check for
leakage of the coolant, fuel, oil, grease, and exhaust gas.
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