Lubricating System - Valtra 6000 Workshop Manual

21. Engine

Lubricating system

The engine has a pressure lubricating system in which the oil
pump (gear pump) is attached to the cylinder block lower
face. The oil is sucked up by the pump through a suction
strainer. After the pump the oil is led through an oilway to the
relief valve and to the oil filter. After the filter, the oil is led
through the main oil gallery from which oilways branch out.
The oil is led through the oilways in the main bearings and
through the crankshaft to the big ---end bearings.
The oil is further directed from the main gallery to the injection
pump, turbocharger, balancing unit (420) and to a possible
compressor. In addition, the idler gear bushing, the camshaft
bearing points and the valve mechanism get their lubrication
oil via the main oil gallery.
Model
1. 9. 1992
Lubricating system (620-- engines)
1. Lubricating oil pump
2. Pressure ---relief valve
3. Oil filter
4. Turbocharger (not 8000 and 8100 tractors)
5. Main oil gallery
6. Oil pressure sensor
The oil pressure relief valve is located under the oil filter on the
left hand side of the engine. The valve regulates the lubricat-
ing oil pressure so that it is kept constant, regardless of the
engine speed. Oil pressure is about 2,5 ---4 bar depending on
revs, oil quality and temperature, and at engine idling speed
the pressure is min 1,0 bar.
The oil filter is full---flow disposable type and is fitted on the
left---hand side of the engine. A by ---pass valve is located at
the base of the filter to ensure safe cold ---starting or to ensure
adequate lubrication in case the filter becomes blocked. In
addition, there is a non ---return valve which stops the filter
from being emptied of oil.
37
Code Page
6000-- 8750
210 15