| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Part Description | Qty |
| A | 4C-9540 | Recoil Spring Bench | 1 |
| B | 223-3506 | Hydraulic Cylinder and Lines Gp | 1 |
| C | 8S-9971 | Adapter | 1 |
| D | - | See Recoil Socket chart. | - |
Start By:
- Remove the front idler and the recoil spring.
- Prior to disassembling the recoil spring assembly, make sure that Tooling (A) is on a level surface.
- Thoroughly clean the outside surface of the recoil spring assembly prior to disassembly.
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Illustration 1 g00483426 - Install Tooling (C) on Tooling (B), as shown.
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Illustration 2 g00494710 Show/hide table
Illustration 3 g00483437 Show/hide table
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.
Note: Adjustable supports (1), reaction plate (2), and movable plate (3) are part of Tooling (A).
- Adjust the spacing between reaction plate (2) and movable plate (3) so that the spacing is approximately the same length as the recoil spring assembly. Also, make sure that adjustable supports (1) are positioned between the reaction plate and the movable plate, as shown. The free length of the recoil spring assembly is
1020 mm (40.2 inch) . The compressed length of the recoil spring assembly is870 mm (34.3 inch) . - Level the supports.
Note: The recoil spring assembly may be installed in Tooling (A) from the end. In this case, reaction plate (2) must be removed. Then reinstall the reaction plate after the recoil spring assembly is in place on two adjustable supports (1).
Show/hide tableNOTICE Do not remove the hoist from the recoil spring assembly until the unit is leveled, centered and locked in the specified tooling.
- Attach a suitable lifting device to the recoil spring assembly. The weight of the recoil spring assembly is approximately
225 kg (495 lb) . - Put the recoil spring assembly in position on adjustable supports (1) in Tooling (A).
- Adjust the adjustable supports in order to align the centerline of the recoil spring assembly with the centerline of Tooling (A).
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Illustration 4 g00498760 Show/hide table
Illustration 5 g00498781 Show/hide tablePersonal 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.
Note: The suitable lifting device has been removed from the recoil spring assembly in order to provide a better illustration of level gauge (4).
- Put a level gauge (4) on the recoil spring assembly.
- Reposition the recoil spring assembly until the recoil spring assembly is level. Reposition the recoil spring assembly until the retaining rod and nut (6) are centered in the hole in reaction plate (2).
- The recoil spring assembly is leveled by moving adjustable supports (1) higher or lower. Refer to Illustration 2. After the recoil spring assembly is leveled and centered, install two pins (5) on the back side of reaction plate (2), as shown.
- Operate Tooling (B) enough to hold the recoil spring assembly in position between reaction plate (2) and movable plate (3). Refer to Illustration 3. Again, check and make sure that the recoil spring assembly is level and centered.
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Illustration 6 g00498784 Show/hide table
Illustration 7 g02126533 Show/hide tableSeveral tons of force are required to compress the recoil spring during assembly.
Do not compress the spring assembly until the covers on the tooling have been closed.
It is possible for the recoil spring to twist under load and come out of the tooling resulting in injury or death.
- Close covers (7) on Tooling (A).
- Use Tooling (B) to compress the recoil spring assembly slightly.
- Through the opening in the end of Tooling (A), remove bolts (14) and strip (12) from the end of rod (8) for the recoil spring.
- Remove nut (6) with Tooling (D).
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Table 2 Recoil Spring Socket Model Socket 312E 386-3318 318C 386-3319 320C 386-3319 320D 142-4216 320E 142-4216 321C 386-3319 321D 142-4216 322C 142-4216 325C 386-3313 - Remove washer (11) that is behind nut (6).
- Release the force on the recoil spring assembly.
- Open the covers on Tooling (A).
- Fasten a suitable lifting device to the recoil spring assembly, and remove the recoil spring assembly from Tooling (A).
- Separate the components of the recoil spring assembly.
- Remove rod (8), support (13), and spring (10) from support assembly (9).
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The spring of the recoil spring assembly is compressed under several tons of force. Do not attempt to compress or release the tension of the spring with the nut on the end of the retaining rod. Damaged threads on the retaining rod or nut can cause the assembly to come apart with force, resulting in injury or death. |
