Oil System - Onan MJA Series Service Manual

3.5 Oil. System
All working parts of the engine are pressure lubricated. The oil sys ­
tem includes an oil intake cup, gear type oil pump,
by-pa9s.v~lve,
oil
pressure gauge. full-flow oil filter, and crankcase passages ana (irill­
ings. Oil is held in the oil base, drawn by the pump. and, delivered
through the
oil
filter. Lines to the rocker housing, drillingsin the
crankcase to crankshaft and camshaft bearings, crankshaft passages to
connecting rod bearings and connecting rod spray holes complete the
oil system plumbing.
-~,
Because it
helps to control oil consumption, the crankcas~ breather is
included in this system. :' .
Normal oil pressure should be
25 PI:;
operating temperature.
If
pressur~;
or governed speed,
insp~ct
the
oits,~"
.®O
tJJ
hen the engine is at
to
psi at half throttle
ul~
components.
FIG 3, 5.A - OIL SYSTEM
'I
\