DCE80-100E
Technical Handbook
Engine TWD731VE
Description
11
P.Group 30
TDCE01
04GB
Reducing valve – located just before the filter. The valve will
open if the lubricating oil pressure is too high and will return
excess oil back to the sump.
Oil filter – of full-flow type, with a filter element of pleated filter
paper. To protect the engine against insufficient lubricating oil, a
by-pass valve is fitted in the oil filter bracket. The valve will open
if the lubricating oil pressure should rise above a certain pressure
due to clogging of the filter. When the valve is open, unfiltered oil
will flow to the engine. The filter is of disposable type and should
be scrapped after use.
By-pass filter – approx. 5% of the oil passes through the by-pass
filter with very low speed. The low speed allows very small parti-
cles to be separated. The filter insert is of the disposable type.
Crankcase ventilation – prevents pressurising of the crank-
case and collects fuel vapour, steam and other gaseous products
of combustion. Crankcase ventilation is provided by a pipe con-
nected to the crankcase inspection cover on the right-hand side
of the engine, between the starter motor and the oil filter.
1. Piston cooling valve
2. By-pass valve (safety valve)
3. Reducer valve
4. Oil cooler
5. Full-flow filter
6. By-pass filter
7. Oil pump
8. Suction strainer
9. Oil sump
Lubrication system
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