Operation - Kohler SFGLD480 Operation & Maintenance Manual

9

3. OPERATION

- Oil is drawn from the sump through the grille in the suction tube by means of the oil pump.
The pump supplies a specific flow of oil at a certain pressure. If the pressure exceeds 8 bar (116 psi), oil is
-
drained in the safety valve directly to the crankcase.
Oil flows from the pump to the thermostat valve unit, reaching first the lubricating oil pressure regulating valve.
-
This adjusts the oil flow to maintain a pressure of 4.5 to 5 bar in the gallery under normal working conditions.
- If the oil is cold (less than 75ºC), it flows through the thermostat valve, avoiding the cooler. Under normal
operating conditions (hot oil), it flows through the cooler.
Afterwards oil arrives at the filter access gallery where the clogged filter valve is to be found. If, for this reason
-
(filter clogging), the pressure exceeds 6 bar, oil will be diverted to the oil sump.
Once filtered, a small amount of oil flows to a distributor that lubricates the auxiliary water pump as well as:
-

the right injection pump , on diesel engines;

the turbocharger on HGM gas engines.
The other portion of oil flows to the main lubrication gallery and is distributed in parallel towards:
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The right camshaft, cylinder heads, rocker arms and injection pump drive.
Oil flows inside the camshaft, from end to end, along the longitudinal direction of the engine block. Also,
oil is distributed through individual passages to the bearings and the auxiliary rocker arm shaft. Holes in
the rocker arm shaft bushing allow oil to lubricate the camshaft rollers.
Part of the oil that flows through the camshaft flows into an external channel which is machined on the
engine block and cylinder head and conveys oil to the main rocker arm shaft. From this point, oil passes
PRODUCT INFORMATION
IC-C-D-25-005e
DESCRIPTION OF LUBRICATION SYSTEM
R
3
4
5 1
2
INDEX
C
FOR "V" ENGINES
8
1 Oil pump
2 Safety valve
3 Regulation valve
4 Thermostat valve
7
5 Oil cooler
6 Clogged filter valve
7 Oil filters
8 Jet pressure valve
9 Oil sump
2.3.4
DATE
Dep. 2
February 2012
O&M_2.002211.810_A_10_2016
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