Usage:
Challenger 65C (2ZJ),
Challenger 70C (2YL),
Challenger 75C (4KK) Agricultural Tractors
- SUPPLEMENT: 08\19\96
Service Magazine; July 31, 1995; Page 2; "New Hitch Control Retains Engine Speed And Eliminates Hitch Ratcheting" for Challenger 65C (2ZJ), Challenger 70C (2YL), and Challenger 75C (4KK) Agricultural Tractors.
This service magazine article should also include Challenger 65 (7YC), Challenger 65B (7YC), and Challenger 75 (4CJ Agricultural Tractors.
In superscript 1 for both charts, replace the word "drift" with "draft". Also in superscript 1 on both charts replace the word "hand" with"handle".
Item 5 on both charts has an incorrect part number. The part number stated is 8T-9346. The correct part number is 8T-9364.
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Description of Change: A new hitch control group is used to replace two former control groups. For machines with draft control, the new control group has improved software that retains the engine speed setting, that was set by the operator, when the machine is turned off. This eliminates the need to reset the desired engine speed each time the machine is restarted.
When the machine is operated at high ambient temperatures, the new control group has internal changes that eliminate a possible problem of the hitch ratcheting (jerking) while being raised.
Adaptable To: The new 111-0530 Control Group replaces the former 7T-7938 Control Group or the 102-9857 Control Group. The new control is effective with 65C (2ZJ1744), 70C (2YL1291), 75C (4KK1984) Agricultural Tractors. To adapt this change to earlier machines, use the appropriate parts list that follows.
When replacing a 7T-7938 Control Group with the new 111-0530 Control Group, drill out the weld nuts previously used for mounting the 7T-7938 Control Group.
