6.5
Section 6
Lubrication System
6
Installation
The Oil Sentry™ pressure switch is installed in the
closure plate pressure port. See Figure 6-12. On
engines not equipped with Oil Sentry™ the
installation hole is sealed with a 1/8-27 N.P.T.F. pipe
plug.
To install the switch, follow these steps:
1. Apply pipe sealant with Teflon
®
(Loctite
®
No.
59241 or equivalent) to the threads of the switch.
2. Install the switch into the tapped hole in the
closure plate. See Figure 6-12.
3. Torque the switch to 10.1 N·m (90 in. lb.).
Testing
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. As
the pressure increases through the range of
7-11 psi the tester should indicate a change to no
continuity (switch open). The switch should
remain open as the pressure is increased to 90 psi
maximum.
3. Gradually decrease the pressure through the
range of 7-11 psi. The tester should indicate a
change to continuity (switch closed) down to
0 psi.
4. Replace the switch if it does not operate as
specified.
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