Usage:
772B (64W),
776 (14H),
776B (6JC),
776C (2TK),
784B (5RK) Tractors;
775B (7XJ) Quarry Trucks;
773B (63W),
777 (84A),
777B (4YC),
777C (4XJ),
785 (8GB),
785B (6HK),
789 (9ZC),
789B (7EK),
793 (3SJ),
793B (1HL) Off-Highway Trucks
Description of Change:
Reference: Service Magazine, June 23, 1997; Page 17, "New Brake Valve Group Prevents Brake Drag".
NOTE: This article replaces Service Magazine; SEPD0403; February 9, 1998; Page 27, "Additional Brake Studs Are Required To Increase Brake Pressure On Certain Off-Highway Trucks."
Improved brake groups are available for certain Off-Highway Trucks. An increased ratio of inner to outer parking brake housing studs are required to allow the use of higher pressure brake relief valves.
Adaptable To: Listed parts are direct replacements for original truck brake groups. Refer to "Service & Parking Brake Groups" chart.