1999/08/30 Caterpillar

Integrated Power Beyond Configuration Now Available {5050}

Usage:

Challenger 35 (8DN, 8RD, ADK),
Challenger 45 (1DR, ABF, 3BK),
Challenger 55 (7DM, 6NN, AEN) Agricultural Tractors

SUPPLEMENT: NOVEMBER 1, 1999

Service Magazine SEPD0486, Article 7, Page 4, August 30, 1999; "Integrated Power Beyond Configuration Now Available".

The machines listed in the subtitle in this article are incorrect. The correct list of machines is shown below.

Challenger 35 (8DN, 8RD, ADK)

Challenger 45 (1DR, ABF, 3BK)

Challenger 55 (7DM, 6NN, AEN) Agricultural Tractors

--------------- END SUPPLEMENT ---------------

Reference: Service Magazine, SEPD0456; February 1, 1999; Page 2; "Low Pressure Return/Case Drain Couplers Available".

Description of Change: Integrated power beyond is now available. The new design contains an internal resolver and has connections for signal and supply directly in the endcover.

Adaptable To: The integrated power beyond configuration described in this article is adaptable to machines equipped with either "priority" or "parallel" flow. "Priority" flow valves were in production in Challenger 35 (8DN1-983), Challenger 45 (1DR1-2037), and Challenger 55 (7DM1-1494) Agricultural Tractors. "Parallel" flow went into production, effective with Challenger 35 (8DN984), Challenger 45 (1DR2038), and Challenger 55 (7DM1495) Agricultural Tractors.

See Table 1 and Illustration 1 and 2 for the necessary parts for machines equipped with "priority" flow. See Table 2 and Illustration 3 for the necessary parts for machines equipped with "parallel" flow. For return oil fittings, refer to the reference article listed above.

NOTE: The valve assembly (endcover) is different, depending on whether you have a machine equipped with or without a three-point hitch.