MODULE GP-SPEEDOMETER & TACH 1090598 - Caterpillar

(1) Clearance between flywheel gear tooth and end of magnetic pickup when installed ... .022 to .030 in.(0.56 to 0.76 mm) Turn the magnetic pickup in until it has contact with the flywheel, then turn it out 1/2 turn. This gives approximately the correct clearance.(2) With the wires from the magnetic pickup disconnected from the electronic speed switch and the engine running at 1500 rpm, the minimum voltage between the wires from the magnetic pickup is ... 10 V AC(2) With the wires from the magnetic pickup disconnected from the electronic speed switch and the engine stopped, the correct resistance between the wires is ... 180 to 220 ohms(3) Torque for lock nut ... 50 10 lb. ft.(70 14 N m)