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catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 2345
Experience:  Field service technician for CAT 19 years.
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Pin install instructions for the swing frame on a 1990 426

Customer Question

Pin install instructions for the swing frame on a 1990 426 cat backhoe. The swing frame part # is 9R6151. Mainly the torque on the bottom pin and the shiming instructions for the top pin.
Submitted: 10 months ago.
Category: Construction and Road Equipment
Expert:  catmastertech replied 10 months ago.


CAT does not have a shimming requirement for the swing tower. The bottom pin washer carries the weight and should provide the correct clearance for the top pin unless the tower is worn down too much. All that is needed is to center the upper pin in the tower to prevent interference.

Attached below is the full spec page for the backhoe including the nut torque.

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