1994/02/28 Caterpillar

New Shroud Assembly Now Available for Power Take Off {1165}

Usage:

Challenger 65, 65B (7YC),
Challenger 65C (2ZJ1-284),
Challenger 75 (4CJ),
Challenger 75C (4KK1-255) Agricultural Tractors

Reference: Service Manual Module; Disassembly and Assembly; SENR4973 for Challenger 65B and 75 Tractors, and SENR5263 for Challenger 65C and 75C Tractors.

Description of Change: A new shroud assembly is now available for the power take off gear. The new shroud assembly, during periods of prolonged or continuous usage prevents excessive oil churning and heat buildup.

Adaptable To: The new 9U2699 Shroud Assembly and related parts are adaptable to the machines listed above. See chart.

Disassembly:

1. Refer to service manual module that corresponds to your machine to drain oil and remove carrier from the power take off.

Machining:

Illustration 1 (A) 5.2 mm (.20 in) diameter, 25.0 mm (.98 in) deep. (B) 1/4-20-2B thread, 13 mm (.5 in) deep. (C) Centerline. (D) 65.10 mm (2.563 in). (E) 65.00 mm (2.559 in).

Illustration 2 (F) 18.0 ± 1.0 mm (.71 ± .04 in) diameter spot face, 4.4 ± 0.5 mm (.17 ± .02 in) deep.

2. Drill, spot face and tap two holes in carrier (1) to dimensions (A), (B), (D), (E) and (F) shown in Illustrations 1 and 2.

Assembly:

Illustration 3

3. Assemble shroud assembly (3) to carrier (1) around gear (2) with two bolts (4), four washers (5) and two spacers (6).

NOTE: Use washers (5) as required to ensure proper clearance between shroud assembly (3) and gear (2).

Caterpillar Information System:

1994/02/21 Servicing Lighted Rocker Switches {1435}

1994/02/21 Performance Of Rotor Axle Seal Depends On Correct Shimming Procedure {5634}

1994/02/21 Direction Of Drum Rotation Can Be Changed; Chain Case Hub Must Be Shimmed Correctly {5634}

1994/02/21 Usage of Transmission Hand Controls {3168}

1994/02/21 Improved Screen Used In The Brake Oil Cooler {1366,4295}

1994/02/21 New Suspension Cylinder Rod Seals For Arctic Region Applications {7201,7213}

1994/02/21 Replaceable Sleeve Bearings Can Be Installed In The Circle Assembly And Moldboard Rail Brackets {6154,6157}

1994/02/21 Frame Reinforcement For Challengers With Gel-Filled Front Idlers and Front Counterweights {7050}

1994/02/21 Improved Hydraulic Coupler Has Plated Parts To Resist Corrosion {6129,5057}

1994/02/21 Right Hand Console Reinforcement {5258}

1994/02/21 New Parts Service Friction Disc Available For Machines With Shift Harshness Complaints {3150,3155}

1994/02/14 Improved Mounting Method For Hydraulic Quick Hitch Pins{5133}

1994/02/28 Fuel Sump Tank Drain Valve Protection Available {1279}

1994/02/28 Implement Status Switch Harness Modifications {1408,7490}

1994/02/28 New Resistor Provides Higher Intermediate Speed of Air Conditioner Fan {7320,7337}

1994/02/28 6G-2943 Circle Assembly Can Be Reinforced To Improve Service Life In Severe Applications {6154,6157}

1994/02/28 New Guard And Skirting Added To Cutter Box To Protect Tail Pulley And Lower Portion Of First Stage Conveyor {6635}

1994/02/28 Improved Lubrication Of Attachment Coupler Bushing {5133}

1994/02/28 Soldering Iron Available For Field Use {0709,1400}

1994/02/28 New Retaining Compound Is Available {0649}

1994/02/28 A New Gauge Group Is Now Used To Prevent Fogging {7450}

1994/02/28 Identification Plate For Starting/Charging Diagnostic Connector {1450,7557,7569}

1994/02/28 New Turbocharger Models Have Left-Hand Threads On Compressor Nut And Turbine Shaft {1053,1052}

1994/02/28 Remove Internal Components From 4P-8454 Cover Assembly {1309}