BODY AS-PISTON 3629350 - Caterpillar

Remove bolts (1) and rocker shaft assembly (2).
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Install Tooling (A) into the hole for the electronic unit injector. Refer to the Tool Operating Manual, NEHS1205.
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Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Install the plate of Tooling (A) onto the valve springs. Install the nut onto the stud. Tighten the nut to compress valve springs (2). Remove retainer locks (1).
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Remove Tooling (A). Remove rotocoil (3), outer spring (4), and inner spring (5).
Repeat Step 5 for the remaining valve springs.Removal Procedure - Cylinder Head Off Engine
Table 2
Required Tools
Tool Part Number Part Description Qty
A 333-0758 Valve Spring Compressor 1 Start By:
Remove the cylinder head.
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Install Tooling (A) into the hole for the electronic unit injector. Refer to Illustration 7.
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Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Install the plate of Tooling (A) onto the valve springs. Install the nut onto the stud. Tighten the nut to compress valve springs (2). Remove retainer locks (1).
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Remove Tooling (A). Remove rotocoil (3), outer spring (4), and inner spring (5).
Repeat Step 3 for the remaining valve springs.Installation Procedure
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Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Install inner spring (5), outer spring (4), and rotocoil (3).
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Use Tooling (A) to compress valve springs (2). Install retainer locks (1). Release the tension on valve springs (2). Remove Tooling (A).
Repeat Steps 1 through 2 for the remaining valve springs.End By:
Install the cylinder head.