SOFTWARE GP-ELECTRONIC 4981583 - Caterpillar

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Right = piston assembled, Left = piston unscrewed
Remove piston (HEX size 65 mm).
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(B) Rod end snubber sleeve
Remove rod end snubber sleeve (B).
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(1) 498-8413 Rod As
Assemble new 498-8413 Rod As (1).Note: Confirm new rod assembly by making sure that the end of the rod is wider.
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Ensure that the chamfer is pointing toward the rod end
Assemble rod end snubber.
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Parts are in the rework kit that comes along with the new rod assembly
Assemble snubber seal on new rod.
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Parts are in the rework kit that comes along with the new rod assembly
Slide the snubber to the back and add retaining rings
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Parts are in the rework kit that comes along with the new rod assembly
Slide snubber to the front, over the retaining ring. Assemble back ring.
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Assemble piston and torque to 2600 50 N m (1918 37 lb ft)e.
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Assemble ball and set screw and torque to 31.5 N m (23 lb ft).
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Assemble reworked rod assembly to cylinder. Torque cap to 500 N m (370 lb ft).
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"X" out old part number 498-8415. Stamp new part number "532-6118".
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(C) 474–5875 Pin as (150mm)
(D) 474–5878 Pin as (124mm)
Install one shim on the bottom of the cylinder eye. With the cylinder retracted, ensue minimum gap of 1.5 mm (0.06 inch) exists between the cylinder eye and upper boss. If the gap is less than 1.5 mm (0.06 inch), remove the shim. Record the serial number of head if no shim is used.Note: When filing a claim, if the gap was less than 1.5 mm (0.06 inch), add a note stating that no shims were used during reassembly. Contact product support for further instructions.When reinstalling cylinders to the felling head make sure that pins are in correct location. 474–5875 Pin as (150mm) (C) must be installed in the base end of the grab arm cylinder and the rod end of the bunching finger cylinder. The shorter 474–5878 Pin as (124mm) (D) must be installed to the rod end of the grab arm and base end of the bunching finger cylinder.