PLATE 0962223 - Caterpillar

Track-Type Tractor:
D11R (S/N: AAF1-UP; 9TR1-UP; 9XR1-UP; 7PZ1-UP)
D11T (S/N: GEB1-UP; TPB1-UP)
Description of Change: The bearing that is used on the joint that is located at the rear of the push arm has been improved for the D11R and D11T. The improved bearing has a larger interior diameter so that less heat will be required in order to install the bearing. These improvements will allow improved service life for the bearing.Adaptable To: The Internal diameter of the 197-5943 Spherical Sleeve Bearing on the 209-7713 Trunnion has been increased from 152.08 mm (5.987 inch) to 152.12 mm (5.989 inch).The following procedure should be used in order to install the 197-5943 Spherical Sleeve Bearing onto the 209-7713 Trunnion .Note: The preferred method of lowering the temperature of the trunnion is a freezer. If a freezer is not available, dry ice can be used in order to cool a mixture of 52% (by volume) of Ethylene Glycol antifreeze and water. This solution forms a slurry at −46 °C (−50 °F) and can be lowered to a temperature of −52 °C (−62 °F) where the solution becomes solid.Note: When using dry ice, proper ventilation and personal protective equipment are required.Note: Liquid nitrogen should not be used in order to lower the temperature of a part due to the detrimental effects on a parts metallurgical properties.Raise the temperature of the 197-5943 Spherical Sleeve Bearing to 165° 5°C (329° 10 °F) for a minimum of eight hours. Lower the temperature of the 209-7713 Trunnion to −48° 5°C (−55° 10 °F) for a minimum of six hours.Use a 100 ton press with a 150 mm (6 inch) minimum stroke in order to install the 197-5943 Spherical Sleeve Bearing completely on the 209-7714 Trunnion. Install the 197-5943 Spherical Sleeve Bearing on the 209-7714 Trunnion immediately after removing the parts from the oven and the freezer.The improved bearing is effective with the following machines:
D11R (S/N: 7PZ1530-UP; AAF278-UP)The improved bearing is adaptable to the following machines:
D11R (S/N: 7PZ1-1529; 9TR1-UP; 9XR1-UP; AAF1-277)
D11T (S/N: GEB1-UP; TPB1-UP)