MOTOR GP-GEAR 3597527 - Caterpillar

2. Remove the four screws (4) from the PC board, and also remove the locknuts from the two front panel switches (5) and (6). 3. Carefully lift front panel (2) from PC (printed circuit) board (7). 4. To remove either display unit, (A) or (B), remove four screws (8) and carefully remove the unit from its position in the PC board.Replacement of 6V4179 Digital Voltmeter Integrated Circuit
If one or more segments of either 8T1005 Display Unit, [RPM at location (A) or DEG at location (B)] do not work, refer to the topic entitled Replacement of 8T1005 Display Unit, in this instruction. After a display unit has been checked and/or a replacement installed and there is still a problem, or, if one display unit is completely blank while the other one works normally, the problem can be with a 6V4179 Digital Voltmeter (DVM) Integrated Circuit. There are two 6V4179 DVM Integrated Circuits in each 8T5250 Engine Timing Indicator. 1. Remove six screws (1), then remove panel (2) from case (3). 2. Use the hook end of 5P1720 Seal Pick (4) and carefully remove DVM integrated circuit, (5) or (6), as shown. [Use the notch at end (C) of the DVM as a reference mark to be used at time of installation.] At installation of a DVM, put the reference mark as given in Step 2, in the correct location. Also, be sure that the pins on the DVM are in alignment with the holes in the socket.Parts and Repair Service Information
When one of the parts used with the timing indicator group is to be returned for a repair or warranty service, always give the following information: * Description of the problem.* Where to send part after repair (shipping address).* Serial number (if applicable).* Name of the person designated to receive the part after it is repaired.* Billing address if different than shipping address.8T5300 Engine Timing Indicator Group
Units less than one year old will be repaired under warranty (except for abuse). The cost of out-of-warranty repairs will be charged to the owner.Contact Caterpillar Service Technology Group for details.Use the following list to direct troubleshooting questions and/or information on service and warranty. Telephone-Toll Free NumbersOutside Illinois 1-800-542-8665Inside Illinois 1-800-541-8665Canada 1-800-523-8665Outside of North America use Telex Number 404435 U.S.MailCaterpillar Inc.Attn: Caterpillar Service Technology Group600 W. Washington St., LD180East Peoria, IL 61602 United Parcel Service, Emery, etc.Caterpillar Inc.Attn: Caterpillar Service Technology Group330 S.W. Adams St. LD180Peoria IL 61602TDC Magnetic Transducer
The TDC Magnetic Transducer can not be repaired. For warranty purposes only, send the transducer to:Electro Corporation1845 57th StreetSarasota, FL 33580 U.S.A.6V7910 Injection Transducer
The 6V7910 Injection Transducer can not be repaired, but it can be returned for warranty. Before returning the transducer, write to or call, Viatran Corp. for a return authorization number. Do not send the transducer without the return authorization number.After receipt of the return authorization number, send the transducer to the address that follows:Viatran Corp.300 Industrial DriveGrand Island, N.Y. 14072 U.S.A.Telephone: (716) 773-1700If it is suspected