Testing Oil Pressure; To Install The Oil Sentry Switch - Kohler Courage SV470 Service Manual

Section 6
Lubrication System
applications, the pressure switch can be used to
ground the ignition module to stop the engine.
NOTE: Oil Sentry ™ is not a substitute for checking
the oil level BEFORE EACH USE. Make sure
the oil level is maintained up to the ''F'' mark
on the dipstick. See Figure 6-5.
Installation
The pressure switch is installed into the center oil
Based on the application an elbow adapter may also
be used. See Figure 6-9. On engines not equipped with
™
Oil Sentry
plug or completely sealed.
Oil Sentry
™
(External)
Figure 6-9. Oil Sentry Pressure Switch Locations.
™
To install the Oil Sentry
™
1. Remove and discard the pipe plug from the
2. Apply
it to the intended position. Do not over tighten or
damage the adapter.
passage. Torque the switch to 4.5-5.0 N·m
(40-45 in. lb.).
5. Connect the lead to the terminal on the Oil
™
Sentry switch.
6.4
Oil Sentry (Behind
™
Blower Housing)
switch:
® ®
No.
™ switch.
™
Testing the Oil Sentry
The Oil Sentry ™ pressure monitor is a normally closed
decreasing pressure within the range of 2.0/5.0 psi.
Compressed air, a pressure regulator, pressure gauge,
and a continuity tester are required to test the switch.
1. Connect the continuity tester across the blade
terminal and the metal case of the switch. With
0 psi pressure applied to the switch, the tester
should indicate continuity (switch closed).
2. Gradually increase the pressure to the switch. The
tester should indicate a change to no continuity
(switch open) as the pressure increases through
the range of 2.0/5.0 psi.
The switch should remain open as the pressure is
increased to 90 psi maximum.
3. Gradually decrease the pressure to the switch.
The tester should indicate a change to continuity
(switch closed) as the pressure decreases through
the range of 2.0/5.0 psi; approaching
0 psi.
replace the switch.

Testing Oil Pressure

On some models the engine oil pressure can be tested
using an oil pressure tester. Follow the instructions
included with the tester. The pressure can be tested by
on the mounting pad, or by removing the Oil Sentry
hose directly into the mounting hole. See Figure 6-10.
Figure 6-10. Tester Locations (Some Models).
Switch
Locations
For Tester
™