Usage:
5230 (7LL) Excavators
A section has been removed from the swing frame to prevent cracking on the 5230 Excavators. Field experience has shown that the swing frame may crack at the swing frame top rail to front casting weld.
Rework Procedure
| NOTICE |
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Do not cut top rail of swing frame.
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Use the following illustrations, photographs and charts to rework the swing frame.
NOTE:
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- * All dimensions given are minimums.
- * All corners should have 3 mm (.12 in) radii.
- * All surfaces in the reworked regions should be ground smooth.
- * No welding is permitted away from the existing weld region.
- * If necessary, dressing of the existing weld is permitted.
- * Welds call for 7018 low Hydrogen electrode or equivalent.
- * All dimensions given are minimums.
Illustration 1. Outside view of a swing frame. The following photograph shows the section that needs to be removed.
Section that need to be removed from the "outside" of the swing frame as shown in photo.
Illustration 2. Inside view of a swing frame. The following photograph shows the section that needs to be removed.
Section that need to be removed from the "inside" of the swing frame as shown in photo.
