CYLINDER GP-BLADE 2659256 - Caterpillar

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Inspect the front frame centershift. The vertical welds on both ends of the front and rear fish plates (both sides of the frame) should be inspected for cracks. Inspect all welds around the front and rear centershift plates, again on both sides of the frame. If cracks are found, inspect the adjacent parent material for any signs of cracking to include the frame top and bottom plates. Additional details for inspection and repair procedures for the front frame centershift can be found in Special Instruction REHS8792 "Inspection and Rework Procedure for the 16M Motor Grader Front Frame Centershift".
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Inspect vertical weld on the front frame side plate as well as the adjacent top and bottom plate welds in the vicinity of the vertical weld for any signs of cracking. Inspect the side plate to bottom plate weld where the frame curves down toward the bolster. Examine the transition area at the rear side of the bolster (reference circled area in below image) for signs of cracking. Both sides of the frame should be inspected. Repair using general weld procedures, SEBD0512. Be sure to blend grind/sand and repairs into the adjacent material.
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Inspect the front frame above the link bar. Damage to the frame in this area indicates possible link bar issues or damage to the front axle oscillation stops. Inspect these areas/components and make repairs as needed. Inspect the bolster pins for signs of movement; there should be no relative motion between the bolster pins and the front frame. The pin retainer bolts should be snug and U-shaped plates that retain the pins welded firmly in place. If the bolster pins are moving in the frame bores, retainer plates may need to be rewelded/repaired, pins inspected, and possibly the bolster pin bores in the front frame repaired/line bored. Refer to Reuse and Salvage Guidelines, SEBF8401, "Dimensions for Articulated Joints and Steering Cylinder Bores for Motor Graders" for proper bore specifications.
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Inspect the front axle weldment where the front gussets connect to the main axle body. Inspect the welds that wrap around the main axle body for signs of cracks (see welds indicated by dashed lines in image). Use general weld procedures (SPED0512) to repair welds and apply Special Instruction REHS8761, "Procedure to Install Gussets on the Front Axle Assembly on Certain 16M Motor Graders" if repairs to the gusset welds are required. Inspect all motion joints on the front axle for presence of grease. Apply a force to the tie rod ends in an upward/downward motion; no play should be noticed in this joint. Ensure tie rod boots are present and undamaged.
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Inspect inboard steering cylinder mounts and pins for any signs of damage. Pin retention bolts should be tight. Inspect the spherical bearings for any cracking in the bearing cages or other damage. If the spherical bearings are damaged, inspect the bores in the axle body where they are installed for any signs of yielding or damage. If damage is present, reference Special Instruction REHS8757, "Instructions for Installing the Bracket Assembly