HARNESS AS 5429452 - Caterpillar

Start By:
Remove the hammer from the housing. Refer to the Service Manual, "Hydraulic Hammer - Remove".
Remove the accumulator. Refer to the Service Manual, "Hydraulic Accumulator - Remove". Note: Upon removal of the control valve, check the following items for cracks: tie rods, tie rod nuts and lock plates. Repair the cracks, as needed.
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Remove rubber ring (1) and lock plate (2) from each tie rod (3). The lock plates may need to be pried from the tie rod.
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Remove O-ring seal (5) from plug (4) in order to prevent damage to the O-ring. The plug is located on the seal carrier.
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Use two bolts for the accumulator to install Tooling (A) to control valve (6). You may need to use some spacers. Proceed to Step 4 after the tooling has been installed. Do not attempt to loosen the tie rods at this time.
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Refer to Illustration 5 for the sequence of heating the tie rods and removing the tie rods.
Heat the exposed center portions of the tie rods with a propane flame or equivalent. Perform this process in order to obtain the turning angles of the tie rod. Direct the flame away from the cylinder of the hammer. Do not heat in one spot. Do not heat tie rods to a temperature that is greater than 300 °C (572 °F).
During the heating process, determine when the tie rod can be loosened. Use a standard ratchet. Do not use an extension for extra leverage on the torque multiplier. Note: Tie rods may still be hot.
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Attach an eyebolt, lifting chains, and a hoist to tie rod (3). Lift the tie rod from the work tool. Refer to Table 2 for the weights of the tie rods. Repeat Step 4 through Step 7 for the remaining tie rods.
Table 2
Weight of the Tie Rods
H140Cs 31 kg (68 lb)
H160Cs 33 kg (73 lb) Note: The tie rod and tie rod nuts are matched pairs. Each part is numbered.Note: Replace all broken tie rods and the nuts. Replace the tie rods and the nuts that are opposite of a broken tie rod. The opposite tie rod may have received excessive stress due to the broken tie rod.Note: If identification does not exist on the tie rod nuts before removal, make an upward arrow on each of the tie rod nuts for assembly purposes.
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Remove four tie rod nuts (7).
Clean the tie rods and the tie rod nuts. Inspect the tie rods and the tie rod nuts. Remove any fretting or galling on the contact surface of the nuts with an emery cloth or with sanding equipment.
Use inspecting equipment in order to detect cracks on the tie rods or on the tie rod nuts.
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Install Tooling (C), lifting chains, and a hoist to control valve (6). Refer to Table 3 for the weights of the control valves.
Table 3
Weight of the Control Valve
H140Cs 160 kg (353 lb)
H160Cs 219 kg (483 lb)
Lift the control valve from the work tool. Place the