How to Assemble Recoil Spring for Caterpillar 320C Excavator

This instruction show you guide on how to assemble recoil spring for Caterpillar 320C Excavator.

Procedures:
1. Check the condition of the threads on rod (11) and nut (6). If the threads are worn or
damaged, use new parts for replacement. 2022 CAT ET
2. Assemble the recoil spring assembly loosely. Position spring (10) onto support (9). Install rod (11) into support (9). Position support (12).


3. Install Tooling (C) on Tooling (B).

Note: Two adjustable supports (1), reaction plate (2), and movable plate (3) are part of
Tooling (A).
4. 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 two adjustable supports (1) are positioned between the reaction plate and the movable plate, as shown. Level the two 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).
5. The combined weight of the recoil spring assembly is approximately 116 kg (255 lb)
6. Fasten a suitable lifting device to the recoil spring assembly. Position the recoil spring assembly on two adjustable supports (1) in Tooling (A). CAT SIS 2021
7. Adjust the two adjustable supports in order to align the centerline of the recoil spring assembly with the centerline of Tooling (A).

8. Operate Tooling (B) and guide the end of the recoil spring assembly through the hole in reaction plate (2). Put a level gauge (4) on the recoil spring assembly. Make sure that the recoil spring assembly is level and centered in Tooling (A). Remove the suitable lifting device from the recoil spring assembly.

9. Close covers (7) on Tooling (A). Compress the recoil spring assembly with Tooling (B).

10. Open the covers on Tooling (A). Measure the assembled length of the recoil spring. The Compressed Length (X) must be set per chart below.Caterpillar Flash Files
 

11. If the assembled length is not correct, close covers (7) on Tooling (A), and adjust the spring length with Tooling (B). If the assembled length is correct, the assembly of the recoil spring assembly can be completed.
12. Apply a rust inhibitor to the threads on the end of the retaining rod for the recoil spring. Install nut (6). Tighten nut (6) with Tooling (D).
13. Put Tooling (E) on the threads of the socket head bolts that hold strip (8) in place. Install the strip and the socket head bolts that hold the strip.
14. Fasten a suitable lifting device to the recoil spring assembly, and remove the recoil spring assembly from Tooling (A). The combined weight of the recoil spring assembly is approximately 116 kg (255 lb).www.car-auto-repair.com

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