Usage:
789 (9ZC),
789B (7EK) Off-Highway Trucks
- SUPPLEMENT: DECEMBER 14, 1998
Service Magazine SEPD0444, Article 15, Page 19, November 16, 1998; "New Hoist And Brake Cooling Pumps Are Now Available For Certain Off-Highway Trucks ".
Disregard this article. A Service Magazine Article with correct information will be published at a later date.
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Description of Change: The new cast iron pumps will allow the hoist system pressure to be increased and will improve the service life of both pumps . The parts listed below must be ordered and installed together to produce the desired results.
Following the installation of the above parts, the hoist relief pressure can be adjusted to 2750 psi max by using the adjustment procedure in the 789 or 789C Service manual.
NOTE: Do not increase the hoist relief pressure to 2750 psi suing the 5T-3229 Pump Group. Adaptable To:
Adaptable To: 789 (9ZC1-Up)and 789B (7EK1-Up)