1997/05/19 Caterpillar

Torque Specified For Piston Rod Nut In Steering Cylinder Group{4303}

Usage:

824G (4SN) Wheel Tractors;
825G (6RN),
826G (7LN) Compactors

Description of Change: The torque specification for piston retaining nut in the steering cylinder group is 3000 ± 300 N·m (2205 ± 220 lb ft).

Adaptable To: This change was effective with 117-5151 Steering Cylinder Group (Eng. Chg. 03) and is adaptable to 117-5151 Steering Cylinder groups (Chgs. 00-02).

NOTE: An engineering change number (Eng. Chg.) indicates effectivity of this improvement or adaptability to previous cylinder groups. The cylinder group part number, engineering change number, and date of manufacture are found on the cylinder group tag.

117-5151 Steering Cylinder Group
(A) Piston nut.

NOTE: Lubricate threads with clean grease and tighten to 3000 ± 300 N·m (2205 ± 220 lb ft).

Caterpillar Information System:

1997/05/19 New Differential Pinion Bearing Setting Tool And Procedure Available{3258}

1997/05/19 New Electronic Transmission Control Group Used{3032,3100}

1997/05/19 Improved Speed Sensor Group Used{1907}

1997/05/19 Installation Of Transmission Oil Distributor Sleeves{5208,3002,3159,3176}

1997/05/19 Torques For Wheel Nuts And Bolts Are Incorrect In The Operation And Maintenance Manual{4201,4202}

1997/05/19 Dimensions For Installing Attachment Tailgate Mounting Hardware On Articulated Truck Dump Bodies{7271,7258}

1997/05/19 Improvements Made To Prevent Alternator Terminal Breakage{1405}

1997/05/19 Cylinder Rod For Suspension Cylinder Groups Has Larger Diameter Bolts For Piston Retention{7201}

1997/05/19 Improved Crankcase Breather Group Is Available{1317}

1997/05/19 Improved Components For Air Lines Groups{1058,1063}

1997/05/19 New Engine Software Available For 3412E Engines In 24H Motor Graders{1920}

1997/05/12 New Cylinder Groups Use Piston For Internal Stop {7562,5101,5102,5104}

1997/05/19 New Antirotation Bearing Pins And Bearing Lubrication Lines Used On Rear Suspension Cylinder Bearings To Increase Service Life{7218,7213,7201,7200}

1997/05/19 Backup Alarms Improved{7406}

1997/05/26 Foam Filled Oil Saver Tanks Used In Off-Highway Truck Rear Axle Groups To Increase Bearing Life{3260}

1997/05/26 New Brake Group Available For Thicker Front Wheel Casting{4006,4251,4201}

1997/05/26 Improved Drum Pad Provides Increased Service Life{6605}

1997/05/26 New Custom Product Support Literature Is Available For 776D Tractors And 769D, 771D,773D, 775D, 777D Off-Highway Trucks Equipped With Power Converter Arrangement{0374,1421}

1997/05/26 New Custom Product Support Literature Is Available For 784B Tractors And 785B Trucks Equipped With Crankcase Guard{0374,7151}

1997/05/26 New Custom Product Support Literature Is Available For 776D Tractors And 777D Trucks Equipped With Rubber Step Group{0374,7254}

1997/05/26 New Custom Product Support Literature Is Available For 784B Tractors And 785B, 789B, And 793C Trucks Equipped With Roller Visor Group{0374,7165}

1997/05/26 Variable Speed Fan Drives{1359}

1997/05/26 New VIMS Message Center Display Available{7601}

1997/05/26 New VIMS-PC Customer Site License And Annual Subscription{7601}