Auxiliary Drive
Usage:
7L6987 and 3N925 Drive:
Left front upper and lower. Upper drive specifications same as 7L6988. Lower drive specifications same as 7L6989.
7L6989 and 3N924 Drive:
Left front lower drive.
Speed ratio to crankshaft speed ... 1.78 : 1
Capacity ... 30 hp
7L6988, 3N923 and 2N9030 Drives:
Left front upper drive.
Speed ratio to crankshaft speed ... 1.16 : 1
Capacity ... 25 hp
Caterpillar Information System:
D348 INDUSTRIAL & MARINE ENGINES Mechanical Overspeed Shutoff
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D348 INDUSTRIAL & MARINE ENGINES Oil Pressure Contactor Switches
D348 INDUSTRIAL & MARINE ENGINES Governor Air Actuator Linkage
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D348 INDUSTRIAL & MARINE ENGINES Testing And Adjusting
D348 INDUSTRIAL & MARINE ENGINES General Instructions Disassembly And Assembly
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D348 INDUSTRIAL & MARINE ENGINES Turbochargers