Engine lubrication system – Generac Power Systems 53187 User Manual
Page 87
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PART 3- ENGINE
LUBRICATION & COOLING SYSTEM
1
SECTION 3.1
ENGINE LUBRICATION SYSTEM
Section 3.1
ENGINE LUBRICATION SYSTEM
on Pump Removal
See
“OilPum p’
on Page 2.4-9 (Part 2, Section 2.4).
Oil Pump Inspection & Reassembly
See "0)7
Pum p"
on Page 2.4-10 (Part 2, Section
2.4).
Idler Gear & oil Pump Installation
Refer to
"Idler Gear and Oil Pum p'
on Page 2.5-3
(Part 2, Section 2.5).
Oil Filter
The cartridge type oil filter is equipped with a
SAFETY VALVE. Should the filter become clogged, the
safety valve will open and allow unfiltered oil to flow to
all parts of the engine.
See Figure 1. Oil enters the filter at "A", flows
through the filtering element, then exits the filter at "B”.
Low Oil Pressure Shutdown
The diesel engine is equipped with a normally-
closed low oil pressure switch (Figure 2). The switch is
held open by engine oil pressure during engine crank
ing, startup and running operations. Should oil pressure
drop below approximately 15 psi, the switch contacts
will close to effect an automatic engine shutdown.
To test the low oil pressure shutdown feature, start
the engine and let it run at NO-LOAD (electrical loads
turned off). Remove the wire from the switch terminal.
Hold the wire terminal end against a clean frame
ground and the engine should shut down.
Figure 2. Low Oil Pressure Shutdown Switch
Figure 1. Oil Filter
PAGE 3.1-1