TRACK ADJUSTER & RECOIL GP 2487117 - Caterpillar

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Install Tooling (D) and Tooling (B) without the hydraulic cylinder. Move the handle downward to compress the valve spring (1).
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Do not remove or install the spring locks with your fingers. If the spring should move, personal injury may result.
Use a magnet to remove the spring locks (2).
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Remove the four rotocoil assemblies (3).
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Remove the four outer springs (4) and the four inner springs (5).
Inspect the outer valve spring (4) and the inner valve spring (5) for damage.
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Remove the valve spring guides (6).
The cylinder head should be turned 180 degrees on Tooling (A). Remove Tooling (B).
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Put identification marks on each valve for proper installation.
Remove each valve (7).
Use Tooling (E) to remove the valve seats (8).
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Ensure that the tool is up against the bottom of the seat. Hand tighten the nut on the puller to hold the tooling against the bottom of the seat.Note: Replace the valve seat and the valve if the valve seat and the valve are damaged.
Illustration 8 g00572774Note: The hydraulic hose coupling must be down when the cylinder is installed.Note: Be careful not to strike the highly finished surface of the cylinder head with the hammer at any time.
Attach Tooling (C) to the cylinder of Tooling (E). Operate Tooling (C) to move the valve seat (8) out of the cylinder head. Do not allow Tooling (E) to fall as the valve seat (8) leaves the cylinder head.
The cylinder head should be turned 180 degrees on Tooling (A).
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Inspect the valve guides (10).
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Use Tooling (F) to remove the valve guide (10).
Illustration 11 g00572779Note: Use the hydraulic cylinder only in the position that is shown in Illustration 11.
The hydraulic cylinder is capable of applying more force than the threaded removal tool can withstand. Using this tooling without the safety retainer group in place could result in serious injury or death.
Inspect the bridge dowels (10). If the dowels need to be replaced, use Tooling (G) to remove the dowels. Do not allow Tooling (G) to fall as the bridge dowels (10) leave the cylinder head.
Operate Tooling (C) to pull the bridge dowels out of the plugs in the cylinder head.
Inspect the dowels in the cylinder head. If a replacement is necessary, remove the dowels.
Thoroughly clean the cylinder head.
Inspect the water jacket of the cylinder head.