SEAL-O-RING 7D9014 - Caterpillar

Introduction
The information in this section is a supplement to the Checks and Tests of the previous sections. This material is much more descriptive and detailed for the user who is less familiar with these systems. The Troubleshooting Section makes constant references to this section when more detailed information is necessary to complete a test.Service Procedure Index
Procedure A
Wiring Diagram For 8290 Speed Control
8290 Speed Control Refer to these notes when using Wiring Diagram for 8290 Speed Control.Note 1: Shielded wires to be twisted pairs or twisted three conductor, grounded at one end only.Note 2: No. 12 AWG or No. 14 AWG stranded wire. Must be as short as possible (see maximum length in "Wire Length Chart"). Note 3: 20 to 32 VDC (7 Amp) continuous.Note 4: Open for minimum fuel. Do not use either the minimum fuel option, disconnect the actuator leads or disconnect the power to the control as part of any emergency stop sequence.Note 5: For positive ground systems, switch and fuse to be located in series with battery (-) and terminal 2. Positive terminal becomes chassis ground. Leads from battery to terminals 1 and 2 must be direct and not pass through distribution points. Use 10A fuse and switch.Note 6: Approximate speed change with trim potentiometer: 2.5 percent using a 1K ohm potentiometer. 5.0 percent using a 2K ohm potentiometer.Note 7: Use a 10A fuse (3 AG or GBB type).Note 8: Polarity not important.Note 9: Connect control wires only at battery posts, not at other connector points.Note 10: Approximate one second ramp time per 50 micro Farad. Capacitor specification: 200 micro Farad maximum, 15 VDC minimum, less than 30 micro Amp DC leakage current over temperature range.Procedure B
Linkage Calibration
1. Verify that the levers on actuator and fuel control linkage are the correct length.
Rod End2. Inspect the rod ends. Rod end replacement should be made when side to side movement of ball (due to wear) will let ball face become flush with body sides.3. Install levers to actuator and fuel linkage at the correct angle. Fuel linkage must not bind at any position in travel range.4. Make adjustment of linkage to fit levers. Verify that linkage will now move to shutoff and maximum fuel positions. Rod ends should be adjusted to provide equal thread engagement in both rod ends.1724 Actuator
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.