Usage:
D25C, D30C, D35C, D350C, D35HP, D400 Trucks
Description of Change: A new switch is used to operate the back-up alarm on the above trucks. The mounting and actuation have been changed to accommodate the new switch.
Adaptable To: The new switch and associated parts are effective as follows.
...D25C 9YC657, including 9YC655
...D30C 7ZC203
...D35C 2GD97
...D350C 8XC261
...D35HP 3FD77
...D400 1MD134
The new switch and associated parts, all used together, can be installed as a replacement for the former 6U204 switch. See chart.
Installation Procedure
1. Fabricate two bosses per Illustration 1.
Illustration 1. Boss dimensions.
2. Remove former switch and its bracket.
3. Carefully remove the cab side wall insulation, and weld the two bosses in the positions shown in Illustration 2.
Illustration 2. Locations for two bosses on the side of the cab.
4. Cut away the insulation as necessary to clear the bosses and re-install.
5. Install the new parts as shown in either Illustration 3 or 4. Use the new, short harness to connect the existing harness to the new switch.
NOTE: Some 2U2512 Brackets used on D25C, D30C, D35C, and D350C Trucks may need a small modification. It may be necessary to enlarge the mounting holes with a file to allow enough movement to adjust the new switch.
Illustration 3. New parts installed on D25C, D30C, D35C, or D350C Trucks.
Illustration 4. New parts installed on D35HP and D400 Trucks.
6. From a 25 mm × 25 mm × 3 mm thick angle (1.0" × 1.0" × .12" thick), cut off a piece 20 mm (.8") long.
7. Weld the angle to the gear shift lever so it operates the switch in reverse gear. See applicable illustration.