SHAFT AS- 1452409 - Caterpillar

tandem housing for signs of obvious damage. Inspect the lower horizontal welds on the tandem case for any cracks; oil seepage along these weld seams would indicate a crack is present. Inspect the two seams on each tandem on both sides of the machine (a total of four locations). If rear fenders are mounted to the machine, inspect the front and rear fender mounts for cracking or damage; updated fender mounts are shown for reference. Weld repair any damage using general weld procedures; reference SEBD0512.
Inspect rear frame. Starting at the rear, examine the welds between the rear rails and the bumper for sings of cracking. If possible inspect all four sides of the joint, both sides of the frame; this will be difficult with the ripper installed. Inspect the tandem oscillation stops for signs of damage or weld cracking. If any problems are noted, inspect the corresponding blocks on the tandems. Repair using general weld procedures; reference SEBD0512.
Inspect the rear frame welds between the rear rails and cast rails on both sides of the frame as shown. General weld procedures can be used to repair these welds; reference SEBD0512. Examine the rearmost pocket in the casting for any signs of cracks, again both sides of the frame. Inspect the top articulation pin retainer bolts for any signs of loosening or sheared or missing bolts. Problems with this bolted joint can indicate articulation hitch/bearing wear or damage to the top frame plate.
Inspect the weld toes on the wrapper plates adjacent to the top frame plate (see illustration) on both side of the frame. Use general weld procedures (reference SEBD0512) to make repairs. Be sure to blend grind/sand welds into the adjacent material to remove any discontiunities; finished welds should look uniform in appearance. If possible, TIG dress the weld toes at the end of the wrapper plate. Inspect the lower bushing in the upper hitch pin joint for any signs of movement in the lower plate of the upper joint. If the bushing is walking out, the hitch must be repaired using line bore procedures. Refer to Reuse and Salvage Guidelines, SEBF8401, "Dimensions for Articulated Joints and Steering Cylinder Bores for Motor Graders" for proper bore specifications. Inspect the lower pin bottom pin retainer for any signs of loose or missing bolts. Re-tighten the bolts to the proper torque as required.
Inspect the articulation lock pin bores for signs of damage. Holes should allow for proper fit of the locking pin without excessive movement. The bores should not be elongated and no deformation or damage to the plates should be present. Inspect the front frame lower side plate to bottom plate weld toes for any signs of cracking. Repair using general weld procedures; reference SEBD0512. Be sure to blend grind/sand welds to blend into adjacent material. If possible, TIG dress weld toes at the rear of the side plate.
Inspect the side plate to top plate welds at the rear of the front frame (both sides of frame). If any cracks