Usage:
TH62 (3LN1-749, 4TM1-1234) TH63 (3NN1-783, 5WM1-1587) TH82 (3JN1-578, 3KN1-438) TH83 (3RN1-1071) TH103 (3PN1-529) Telehandlers
Requests have been received from the field for a way to move the differential lock switch from its current location under the steering column to the dash panel. Positions one and six in the dash are often available.
Illustration 1.
Possible Switch Positions
The differential lock switch can be moved from its current location to the dash panel on machines that have an open or blank position on the dash panel. The procedure is written as if there is an open position on the dash panel.
The 141-8048 Differential Lock Switch Assembly will fit into any of the numbered positions shown in Illustrations 1 above. The type of configuration used in the manufacturing of the machine will determine which dash panel space is available.
Installation Procedure
1. Park the machine on level ground. Lower the boom. Set the parking brake. Turn the machine to OFF.
2. Locate the open position on the dash panel. Remove the blanking plate for that location.
3. Remove the existing differential lock switch. Remove the yellow number 165 and the blue number 324 wires from the back of the differential lock switch.
4. Remove the dash panel mounting screws. Carefully lift up the top dash panel.
5. Locate the wire harness for the differential lock switch. Carefully pull it up through the dash panel.
6. Measure the wire harness to be sure there is enough wire to reach the new location. It may be necessary to splice additional yellow 16 gauge wire (F) and blue 16 gauge wire (G) to reach the new location. If additional wire is needed, splice each wire with one 8S-4626 Wire Splice (E) and tape each splice.
7. Measure from the new switch location to an accessible ground stud. Cut a piece of black 16 gauge wire (H) to this length.
8. Measure the distance from the nearest switch to the new differential lock switch position. Cut another piece of 16 gauge yellow wire (F) to this length for a jumper wire.
9. Crimp one 6U-6339 Female Terminal (D) to the end of each of these wires:
A. The 165 yellow wire from the differential lock switch removed in Step 3.
B. The 324 blue wire from the differential lock switch removed in Step 3.
C. The black 16 gauge ground wire (H) cut in Step 7.
D. The yellow 16 gauge jumper wire (F) cut in Step 8. Crimp one 2L-8067 Terminal (C) to the other end of the black ground wire cut in Step 7. Connect the 2L-8067 Terminal to the ground stud located in Step 7.
Illustration 2.
Terminal Positions
10. Remove 111-7898 Connector from the nearest switch in the dash panel. Carefully remove the yellow 308 wire and terminal from that connector, Position 8. See Illustration 2 above for terminal positions. Remove the terminal from this wire. Splice the new yellow jumper wire cut in Step 8 to this wire with a new 6U-6339 Female Terminal (D). Return this terminal to its original socket. Install the connector to its original location.
11. Install the crimped terminal of the number 324 blue wire in the Number 3 socket of connector (B). See Illustration 2 for socket/terminal positions. Install the 165 yellow wire terminal in the Number 2 socket of connector (B). Install the number 308 yellow jumper wire in the Number 8 socket of connector (B). Install the number 200 black wire terminal in the Number 7 socket of terminal (B).
12. Install the new 141-8048 Differential Lock Switch Assembly (A) in the new location in the dash panel. Install 111-7898 Connector (B) and wires to the differential lock switch. Return the wire harness to its original position.
13. Replace the dash panel and screws.
Illustration 3.
Possible Switch Positions
Illustration 4.
OM&M Wording & Graphic
14. After relocation of this switch, it is recommended that the operation and maintenance manual should be modified to reflect this change. Use Illustration 1 and Illustration 3 to note the new location of the Differential Lock Switch Assembly. The included graphic and wording in Illustration 4 can be glued in the machine's OM&M.