REMOTE NORMAL SHUTOFF - TM-5-2815-232-140242

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START-UP OVERRIDE OF LOW ENGINE OIL PRESSURE

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TM-5-2815-232-14 Engine Diesel Caterpillar Model 3508 Manual

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HYDRAULIC CIRCUITS (LATER)

HYDRAMECHANICAL PROTECTIVE SYSTEM

SYSTEMS OPERATION

SCHEMATIC NO. 12 (REMOTE NORMAL SHUTOFF)

4. Diverter valve orifice. 7. Diverter valve. 8. Fuel shutoff actuator. 19. Remote normal shutoff valve.

REMOTE NORMAL SHUTOFF

Make Reference to Schematic No. 12.

The remote normal shutoff is an option that can

be used with the hydramechanical protective

system. An air or electric operated remote

normal shutoff valve ( 19) is installed in the

diverter valve return line. When remote normal

shutoff valve (19) is operated, the outlet of the

diverter valve is stopped. The oil pressure

becomes equal on both sides of diverter valve

orifice (4). Spring force will move the valve

spool of diverter valve (7) to make an alignment

of the oil passage with the oil line to fuel shutoff

actuator (8). Oil pressure can now activate fuel

shutoff actuator (8) which causes the governor to

move the fuel control linkage to the "SHUTOFF"

position and shutdown the engine.227

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