ARIA

ENGINE

•

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.