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ENGINE
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Oil pressure switch / indicator for proper func-
tioning.
•
Functioning of pressure relief valve on oil pump.
•
Oil pumps performance using a suitable pres-
sure gauge. If low oil pressure is not on account
of above factors, wear of journals/bearings is in-
dicated for which overhaul of engine may be
considered.
•
Leakage through oil pumps back plate.
4. MECHANICAL FAILURES
Defective water pump, idler tensioner, air lock in
HLA, damaged turbocharger, engine mounts or al-
ternator can be a source of mechanical noise. Defect
can be located by replacing alternator, water pump,
engine mounts, and idler tensioner with a new one.
Metallic knocking sound from an engine may be due
to faulty injection, excessive clearance in main and
big end bearings, small end bush, tappets, piston
slap, seizing of piston rings, scored cylinder bore or
breakage of any moving parts. Overhauling of fuel
system will set right Diesel Knock. Dismantling of
engine may be considered if still noise occurs even
after attending all above mentioned problems. Check
for EMS problems if any.
2.1.2.2 REGULAR MAINTENANCE
NOTE
None of the procedures should be performed with
ENGINE RUNNING, unless specified in the proce-
dure.
A. ENGINE OIL REPLACEMENT.
!! WARNING
•
New and used engine oil can be hazardous.
•
Used oil filter and oil to be disposed as per local
regulation.
NOTE
Before draining engine oil, check engine for any oil
leakage. If any leakage is found, make a note of it
and repair or replace the defective part before refill-
ing the engine oil.
1. Position the vehicle in a 2 poster lift.
2. Open the Engine oil filling cap.
3. Remove the stone guard
(For procedure refer
stone guard removal in body section)
4. Position a suitable container for collecting the
drained Engine oil below the oil Sump drain plug.
5. Loosen and remove the Engine oil sump drain
plug (1).
6. Drain Engine oil in the container placed in step 3.
7. After draining the oil completely, wipe the drain
plug and reinstall the drain plug.
NOTE
When replacing the Engine Oil, allow the oil to drain
completely and then refill it with new oil after ensur-
ing that drain plug is reinstalled and tightened to a
torque of 5±1 kg-m with new sealing washer.