315B Excavator Excavator Systems Caterpillar

Recoil Spring - Assemble

Usage:

Assembly Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	4C-9540	Recoil Spring Bench	1
B	146-2457	Hydraulic Power Supply Gp	1
B	223-3506	Hydraulic Cylinder and Lines Gp	1
D	142-4212	Spanner Socket	1
E	9S-3263	Thread Lock Compound	1

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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).

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Illustration 1	g00370540

Check the inside of support (9) . Make sure that the support is clean and free of dirt and debris.

Assemble the recoil spring assembly loosely. Install the hydraulic track adjuster (12) in plate (11) , spring (10) , and support (9) .

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Illustration 2	g00483435

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Illustration 3	g00483437

Note: Two 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. Make sure that two adjustable supports (1) are positioned between the reaction plate and the movable plate, as shown. Level the two supports.

Note: Do not remove the suitable 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) .

The combined weight of the recoil spring assembly and the hydraulic track adjuster is approximately 95 kg (210 lb). Fasten a suitable lifting device to the recoil spring assembly. 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.

Operate Tooling (B) and guide the end of the recoil spring assembly through the hole in reaction plate (2) . Make sure that the recoil spring assembly is leveled and centered in Tooling (A) . Remove the suitable lifting device from the recoil spring assembly.

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Illustration 4	g00483438

Close covers (6) on Tooling (A) . Compress the recoil spring assembly with Tooling (B) . Open the covers on Tooling (A) and measure the assembled length of the recoil spring. The compressed spring length must be 388.0 ± 0.7 mm (15.28 ± 0.03 inch). If the assembled length is not correct, close covers (6) 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.

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Illustration 5	g00370539

Apply a rust inhibitor to the threads on the end of the retaining rod for the recoil spring. Install the washer and nut (8) . Tighten nut (8) with Tooling (D) .

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Illustration 6	g00370538

Fasten a suitable lifting device to the recoil spring assembly, and remove the recoil spring assembly from Tooling (A) . Put Tooling (E) on the threads of the two socket head bolts that hold strip (7) in place. Install the strip and the two socket head bolts that hold the strip.

End By: Install the front idler, the recoil spring and the hydraulic track adjuster. Refer to Disassembly and Assembly, "Front Idler, Recoil Spring and Hydraulic Track Adjuster - Remove and Install".