ARMY TM 9-6115-673-13&P
AIR FORCE TO 35C2-3-512-1
(3) Remove LOP switch and coupling by unscrewing coupling from diesel engine
block.
(4) Separate LOP switch and coupling.
c.
Installation.
(1) Apply thread sealant (Item 20, Appendix E) to threads of LOP switch (Figure 4-47).
Then assemble LOP switch and coupling.
(2) Apply thread sealant (Item 20, Appendix E) to threads of coupling. Then install
coupling in diesel engine block.
(3) Connect electrical lead.
(4) Use tie wraps to secure wiring to LOP shutdown cable as removed.
(5) Service diesel engine oil.
LOW OIL PRESSURE (LOP) SOLENOID ASSEMBLY.
a.
Testing.
(1) Shut down generator set
(2) Release instrument panel by turning fastener, open instrument panel slowly.
(3) Tag and disconnect electrical leads for LOP solenoid from terminals 2 and 4 of TB1
(MEP-531A) or terminals 3 and 5 of TB1 (MEP-501A).
(4) Apply 24 VDC power source to disconnected wires (positive lead to wire
disconnected from terminal 4 (MEP-531A) or terminal 5 (MEP-501A)). LOP
solenoid should activate.
(5) If LOP solenoid does not activate, replace solenoid.
(6) Connect electrical leads, remove tags, close and secure instrument panel.
b.
Removal.
(1) Shut down generator set.
(2) Release instrument panel by turning fastener, open instrument panel slowly.
(3) Tag and disconnect electrical leads for LOP solenoid from terminals 2 and 4 of TB1
(MEP-531A) or terminals 3 and 5 of TB1 (MEP-501A).
(4) Remove screws (Figure 4-49), lockwashers, washers, and LOP solenoid from
control panel.
(5) Loosen screw(s) attaching LOP engine shutdown cable to LOP solenoid plunger.
c.
Cleaning and Inspection.
(1) Remove LOP solenoid, refer to paragraph 4.49.b.
