Farm Power & Machinery

Troubles in lubrication system

• There are some problems which are commonly faced in lubrication system such as: Excessive oil goes to combustion, low oil pressure and excessive oil pressure.

1. Excessive oil consumption: The reasons for excessive oil consumption are :
(a) More oil goes to combustion chamber and gets burnt
(b) Some leakage occurs in some part of the line and
(c) Loss of oil in form of vapour through ventilating system.
Oil can enter the combustion chamber through rings and cylinder walls, worn piston rings and worn bearings.

2. Low oil pressure : Low oil pressure can result due to :
(a) Weak relief valve spring
(b) Worn oil pump
(c) Cracked oil line
(d) Obstruction in the oil lines
(e) Very thin oil and
(f) Worn out bearings
Care should be taken to remove these defects as far as possible to increase the oil pressure in the lubricating system. Sometimes defective oil pressure indicator shows low oil pressure. This should be checked.

3. Excessive oil pressure : Excessive oil pressure may result due to:
(a) stuck relief valve
(b) strong valve spring
(c) clogged oil line and
(d) very heavy oil
These defects should be removed to reduce the excessive oil pressure in the lubricating system. Sometimes defective oil pressure indicator records high oil pressure. Care should be taken to check this defect.