Optional Oil Filter; Low Oil Pressure System - Generac Power Systems GN190H Service And Repair Manual

SECTION 12: LUBRICATION
Figure 12.10 — Location of Oil Pump Drive Pins
12. Carefully install the crankcase cover. Align the cover with
dowel pins on the crankshaft flange, as well as with the
crankshaft and camshaft. Make sure the cover gasket is on.
Rotate the crankshaft to align the oil pump inner and
outer rotors. The cover should fall easily into place — DO
NOT FORCE.
13. Install the crankcase cover bolts and tighten (see Figure
12.11).
TORQUE SPECIFICATION
CRANKCASE COVER BOLTS
GN-190
TORQUE = 8 foot-pounds or 100 inch-pounds
TORQUE SPECIFICATION
CRANKCASE COVER BOLTS
GN-191 and GN-220
TORQUE = 18 foot-pounds or 216 inch-pounds
Figure 12.11 — Crankcase Cover Bolt Tightening Sequence
14. After tightening the crankcase cover bolts, make sure the
crankshaft turns freely.

OPTIONAL OIL FILTER

The optional oil filter is a "spin-on" type. An oil filter
adapter is bolted to the oil filter pad. When installing the oil
filter, coat the filter seal with engine oil. Then install the filter
and tighten until its seal contacts the filter adapter. After the
filter seal contacts the adapter, tighten 3/4 to 1 turn more.
(See Figure 12.12)
OIL FILTER
PAD
Section 12.12 — Optional Oil Filter

LOW OIL PRESSURE SYSTEM

Some engine applications may be equipped with a low oil
pressure switch. (See Section 12.10) The switch is a normally
closed type, but is held open by engine oil pressure during
cranking and running. Should engine oil pressure drop below
approximately 10 psi for any reason, the switch contacts will
close. With the switch contacts closed, the following will occur:
• A low oil pressure indicator will turn on and glow as power
is available for its operation.
• Switch contacts closure will connect the primary ignition
circuit to ground, ignition will terminate, and the engine
will shut down.
NOTE: Some differences may exist between low oil
pressure systems.
schematic/wiring diagram in the Owners Manual for the
specific application using this engine.
50
OIL FILTER
ADAPTER
GASKET
OIL FILTER
ADAPTER
OIL FILTER
OIL FILTER
ADAPTER
BOLT
Refer to the electrical