Longer Nipple Prevents Mud From Covering Rear Axle Housing Breather{3260}
Usage:
768B, 768C Tractors;
769B, 769C Trucks
Description of Change: A longer nipple is used for the breather on the rear axle housing. This prevents mud from covering the breather.
Adaptable To: The new 3B7743 Nipple is a direct replacement for the former 4F0186 Nipple in the rear axle housing groups.
Location of nipple.
Caterpillar Information System:
1990/02/12 Use Correct Method When Installing Center Bonded Mounts{1273,5056}
1990/02/12 Improved 2U0259 Rubber Cover For Hoist Valves Is More Resistant To Heat And Contaminants{5136}
1990/02/12 New Mounting Bracket Improves Operation Of Hoist Cable{5136}
1990/02/12 Heavy-Duty Wiper Motor Used{7305}
1990/02/12 New Pressure Switch Used In Suspension Inhibit Circuit{7200}
1990/02/12 Move The Grease Fitting To Improve Lubricant Penetration To Suspension Frame Bearings
1990/02/12 Invert A-Frame Mounting Bolts To Obtain Correct Torque{3268,7200}
1990/02/12 Seals Can Be Added To Suspension Cylinder Bearings{7213}
1990/02/05 Serviceable Parts Now Available For Cutter Clutch {5606}
1990/02/05 New Hose Clamps Have Constant Torque {5057,7554}
1990/02/05 New Hardware Improves Hydraulic And Transmission Tank Group {5056,3177}
1990/02/05 Check Differential Pinion Bearing Retainer Bolts Whenever Transmission Is Removed {3254,3269}
1990/02/12 Rework Procedures For The Hydraulic Pump Bias Piston{5070}
1990/02/12 New Components Used In Positioner And Kickout Group{6107,5109,5112}
1990/02/12 New Mounting And Cylinder Group, Quick Coupler Group And Lines Group Improve Visibility{5133,5057,6129}
1990/02/12 New Mounting Bolts And Washers Used For Propel Motor{4351,7553}
1990/02/12 New Oil Cooler Gasket Has Bead On Only One Side{1378}
1990/02/12 New Exhaust Manifold Stud Available{1059}
1990/02/12 Identification Of Turbocharger And Fuel System Components{1250,1700,1052}
1990/02/12 Procedure To Charge Air Conditioner Using Receiver Dryer Sight Glass{7320,7322}
1990/02/12 Contaminated Refrigerant Can Cause Air Conditioner Failures{7320,1802,1805,7322}
1990/02/12 New Air Conditioner Thermostat Switches Used{7320}
1990/02/19 New Spider Assembly Used In Suction Fan Group{1356}
1990/02/19 New Turbocharger Guard Assembly Resists Vibration Better{1073}