SUSPENSION GP-FRONT 2997982 - Caterpillar

Do not remove the hoist from the recoil spring assembly until the unit is leveled, centered and locked in the specified tooling.
The combined weight of the recoil spring assembly is approximately 116 kg (255 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 to align the centerline of the recoil spring assembly with the centerline of Tooling (A).
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The hoist has been removed from the recoil spring assembly to provide a better illustration of level gauge (4).
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.
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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.
Close covers (7) on Tooling (A). Compress the recoil spring assembly with Tooling (B).
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(X) Compressed length of the spring
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Open the covers on Tooling (A). Measure the compressed length of the recoil spring. The compressed length is Dimension (X). Refer to Table 3 for the correct compressed spring length.
Table 3
Recoil Spring Compressed Length
Model Dimension (X)
315D 448.0 mm (17.64 inch)
319D 550.0 mm (21.65 inch)
320D 550.0 mm (21.65 inch)
323D 550.0 mm (21.65 inch)
686.0 mm (27.01 inch)(1)
324D 606.0 mm (23.86 inch)
325C 551.0 mm (21.69 inch)
325D 686.0 mm (27.01 inch)
845.0 mm (33.27 inch)(2)
326D L 606.0 mm (23.86 inch)
328D 644.0 mm (25.35 inch)
329D 686.0 mm (27.01 inch)
330D 644.0 mm (25.35 inch)
785.0 mm (30.91 inch)(3)
336D 644.0 mm (25.35 inch)
785 mm (30.91inch)(4)
(1) This Dimension is for (S/N: DKW1-Up; SED1-Up; NES1-Up)
(2) This Dimension is for (S/N: GBR1-Up; MCL1-Up)
(3) This Dimension is for (S/N: ERN1-Up)
(4) This Dimension is for (S/N: DTS1-Up; LMG1-Up; JWR1-Up)
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, then assembly of the recoil spring assembly can be completed.
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Apply a rust inhibitor to the threads on the end of the retaining rod for the recoil spring. Install nut (6). Tighten nut (6). Refer to Table2 for the correct socket part number.
Apply 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.
Attach a suitable lifting device to the recoil spring assembly, and remove the recoil spring assembly from Tooling (A). The weight of the recoil spring assembly is approximately 116 kg (255 lb).End By:
Install the front idler and the recoil spring.