314D CR Hydraulic Excavator Machine Systems Recoil Spring - Assemble Caterpillar

Assembly Procedure

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Illustration 1	g00860242

1. Check the condition of the threads on retaining rod (12) and nut (8). If any of the threads are worn or damaged, install new parts.
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   Personal injury or death can result from recoil spring force. Recoil spring force, if not relieved, can result in personal injury or death. Relieve spring force before removing threaded retainer, performing repairs on recoil spring housing, or removing recoil spring. See Service Manual for disassembly instructions. Maximum pressure is 20 700 kPa (3,000 psi).

2. Loosely assemble the recoil spring assembly. Install retaining rod (12) in plate (11), in spring (10) and in support (9).
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   Illustration 2	g00483426

3. Install Tooling (C) on Tooling (B), as shown.
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   Illustration 3	g00561928

   Note: Two adjustable supports (1), reaction plate (2) and movable plate (3) are part of Tooling (A).

4. Position two supports (1) of Tooling (A) in order to support the recoil spring assembly. Make sure that the two supports are level.

5. 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.
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   Illustration 4	g00561991

   Note: Do not remove the lifting device from the recoil spring assembly until the unit is leveled, centered and locked in Tooling (A).

   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).

6. The recoil spring assembly weighs approximately 53 kg (117 lb). Put the recoil spring assembly in position on two adjustable supports (1) in Tooling (A). Adjust the two adjustable supports until the centerline of the recoil spring assembly and the centerline of Tooling (A) are aligned.
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   Illustration 5	g00370415
   The lifting device is removed for photographic purposes.

7. 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 for the recoil spring and the nut for the recoil spring assembly are centered in the hole in reaction plate (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). Make sure that the recoil spring assembly is level and centered.
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   Illustration 6	g00562007

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   Personal injury or death can result from recoil spring force. Recoil spring force, if not relieved, can result in personal injury or death. Relieve spring force before removing threaded retainer, performing repairs on recoil spring housing, or removing recoil spring. See Service Manual for disassembly instructions. Maximum pressure is 20 700 kPa (3,000 psi).

8. Close covers (6) on Tooling (A). Use Tooling (B) to compress the recoil spring assembly slightly.
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   Illustration 7	g00860287

9. Open the covers (6) on Tooling (A). Measure Dimension (X). The compressed length of Dimension (X) measures 377 mm (15 inch). If the compressed length of Dimension (X) is not correct, close covers (6) on Tooling (A) and adjust the length with Tooling (B). Adjust the length of Dimension (X) until the compressed length of Dimension (X) is correct.

10. Apply a rust inhibitor to the threads of rod (12). Install the washer and nut (8). Tighten nut (8) until there is sufficient clearance in order to install cotter pin (7).

11. Fasten a suitable lifting device to the recoil spring assembly. The recoil spring assembly weighs approximately 53 kg (117 lb). Remove the recoil spring assembly from Tooling (A).

End By:

1. Install the front idler and the recoil spring. Refer to Disassembly and Assembly, "Front Idler and Recoil Spring - Install" in this manual.