ENGINE ARRANGEMENT 5C5173 - Caterpillar

3208 Linkage
(A) Shutoff position. (B) 338.7 mm (13.33 in). (C) 35 5 degrees.
3304 Linkage
(A) Shutoff position. (B) 412.7 mm (16.25 in). (C) 20 5 degrees. (D) 30 5 degrees. (E) Maximum high idle. (F) Minimum low idle.
3306 Linkage-Arrangement A
(A) Shutoff position. (B) 268 mm (10.6 in). (C) 35 5 degrees. (D) Maximum high idle. (E) Minimum low idle.
3306 Linkage-Arrangement B
(A) 10 degrees. (B) 35 degrees. (C) 297 mm (11.7 in). (D) Minimum low idle. (E) Maximum high idle.
3406 Linkage
(A) Shutoff position. (B) 206.5 mm (8.13 in). (C) 20 5 degrees. (D) 35 5 degrees. (E) Minimum low idle. (F) Maximum high idle.524 Actuator
3304 Linkage
(A) 20 5 degrees. (B) Shutoff position. (C) 30 degrees. (D) Maximum high idle. (E) 358.1 mm (14.10 inches) (F) 52 5 degrees.
3306 Linkage-XQ Rental Gensets Only
(A) 22 degrees. (B) 30 degrees. (C) 427.0 mm (16.81 inches). (D) Maximum high idle. (E) Minimum low idle.
3306 Linkage
(A) 75 5 degrees. (B) Shutoff position. (C) 65 5 degrees. (D) 358.1 mm (14.10 in). (E) 30 5 degrees. (F) Maximum high idle.
3406 Linkage
(A) Shutoff position. (B) 75 5 degrees. (C) 65 5 degrees. (D) 32 5 degrees. (E) Maximum high idle.Procedure C
Magnetic Pickup
The magnetic pickup is used to sense engine speed. It is a single-pole, permanent-magnet generator made up of a coil of wire wound around a permanent magnet pole.
Schematic Of Magnetic PickupWhen the magnet is placed close to the flywheel ring gear teeth, an AC voltage is generated as the gear teeth cut through the magnetic field. This output is proportional to engine speed, and is sent to the 8290 Speed Control. The speed sensor in the control box is sensitive only to the frequency of the magnetic pickup input, so that the amount of the magnetic pickup voltage is important only in that the level is enough to activate the speed sensor circuits. When connected to the control, about 1 VAC is the minimum usable level. Voltages up to 50 volts at Rated speed are often generated, depending on the gap between the gear and magnetic pickup pole piece. This clearance is normally 0.56 to 0.85 mm (.022 to .033 in).For field installation, this gap may be set by turning pickup into threads until the magnet is against a gear tooth while the engine is stopped. Now back pickup out 1/2 turn 30 degrees, and tighten locknut to 70 14 N m (50 10 lb ft).Magnetic Pickup Check
Check for more than 1.0 Vrms maximum at Rated speed with magnetic pickup connected to 8290 Speed Control. Magnetic Pickup Voltage: 1.0 VAC rms minimum, including cranking.Troubleshooting The Magnetic Pickup
1. Disconnect the pickup leads and check the resistance between these leads (with an ohmmeter) for 150 to 250 ohms.2. Check between the pickup case and these leads with ohmmeter for almost infinite resistance.3. Start the engine and control the speed manually, or block the throttle. Check the pickup leads with a high