TM-5-3805-254-20-1

TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL VOLUME 1 OF 2

JANUARY 1988
TM-5-3805-254-20-1

  TM-5-3805-254-20-1 - Page 58 of 790

TM 5-3805-254-20-1
ELECTRICAL SYSTEM - CONTINUED
COMPRESSION BRAKE THROTTLE SWITCH
Current supplied through COMPRESSION BRAKE-JACOBS ENGINE BRAKE/OFF switch.
Circuit completion is
accomplished by releasing accelerator to allow fuel pump throttle control to contact compression brake throttle switch to
energize compression brake.
ENGINE OIL PRESSURE SAFETY SWITCH
Current supplied through KEY SWITCH when turned on.
When oil pressure drops below a preset pressure, contact points
close to complete circuit.
This energizes engine shutdown bell and fuel shutoff to shut down engine.
1-43


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