Assembly Procedure for the Recoil Spring on CIPI Undercarriage Arrangements which are Based on 330 Track Type Excavators
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Table 1
| Required Tools |
| Tool |
Part Number |
Part Description |
Qty |
| A |
4C-9540 |
Bench Group |
1 |
| B |
146-2457 |
Hydraulic Power Supply Gp |
1 |
| 223-3506 |
Hydraulic Cylinder and Lines Gp |
1 |
| C |
8S-9971 |
Ram Adapter |
1 |
| D |
4C-4469 |
75 mm Socket |
1 |
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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. |
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Note: Prior to assembling the recoil spring assembly, make sure that Tooling (A) is on a level surface.
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| Illustration 1 | g00498786 |
- Check the condition of the threads on recoil spring retaining rod (12) and nut (6) . If the threads are worn or damaged, use new parts for replacement.
- Check the inside of support assembly (8) . Make sure that the support assembly is clean and free of dirt.
- Assemble the recoil spring assembly loosely. Install spring (9) in support assembly (8) . Install recoil spring retaining rod (12) and support (10) .
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| Illustration 2 | g00507842 |
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| Illustration 3 | g00498784 |
Note: The use of a pry bar might be necessary to line up support (10) with support assembly (8) . Place the pry bar between the recoil spring assembly and movable plate (3) of Tooling (A) to line up the support with the support assembly.
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| Illustration 4 | g00494710 |
- The weight of the recoil spring assembly is 175 kg (385 lb). Fasten a hoist 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 in order to align the centerline of the recoil spring assembly with the centerline of Tooling (A) .
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| Illustration 5 | g00498760 |
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| Illustration 6 | g00498781 |
Note: The hoist 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. After the recoil spring assembly is leveled and centered, install two pins (5) on the back side of reaction plate (2) , as shown.
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| Illustration 7 | g00494705 |
- Install Tool (D) on Tool (B) , as shown.
- Operate Tool (B) and guide the end of the recoil spring assembly through the hole in reaction plate (2) . Again, check and make sure that the recoil spring assembly is level and centered in Tooling (A) . Remove the hoist from the recoil spring assembly.
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| Illustration 8 | g01044516 |
- Close covers (7) on Tooling (A) . Compress the recoil spring assembly with Tool (B) . Open the covers on Tooling (A) , and measure the assembled length of the recoil spring assembly. Measure the distance from the end of the support assembly to the mark on support (10) , as shown. Dimension "X" is the assembled length of the recoil spring assembly. The assembled length must be 697 ± 2 mm (27.44 ± 0.05 inch). If the assembled length is not correct, close covers (7) on Tooling (A) , and adjust the spring length with Tool (B) . If the assembled length is correct, install washer (11) and nut (6) . Tighten nut (6) with Tool (E) .
- Fasten a hoist to the recoil spring assembly. Remove the recoil spring assembly from Tooling (A) . Put 9S-3263 Thread Lock Compound on the threads of the two socket head bolts that hold lock strip (13) in place. Install the lock strip and the two socket head bolts that secure the lock strip. Bend the tab on the lock strip over the flats on nut (6) .
End By:
Install the front idler and recoil spring assembly as a unit. Refer to Disassembly and Assembly, "Front Idler and Recoil Spring - Install" in this manual.
Assembly Procedure for the Recoil Spring on CIPI Undercarriage Arrangements which are Based on 330B Track Type Excavators
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Table 2
| Required Tools |
| Tool |
Part Number |
Part Description |
Qty |
| A |
4C-9540 |
Bench Group |
1 |
| B |
146-2457 |
Hydraulic Power Supply Gp |
1 |
| 223-3506 |
Hydraulic Cylinder and Lines Gp |
1 |
| C |
8S-9971 |
Ram Adapter |
1 |
| D |
4C-4469 |
75 mm Socket |
1 |
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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. |
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Note: Prior to assembling the recoil spring assembly, make sure that Tooling (A) is on a level surface.
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| Illustration 9 | g00498786 |
- Check the condition of the threads on recoil spring retaining rod (12) and nut (6) . If the threads are worn or damaged, use new parts for replacement.
- Check the inside of support assembly (8) . Make sure that the support assembly is clean and free of dirt.
- Assemble the recoil spring assembly loosely. Install spring (9) in support assembly (8) . Install recoil spring retaining rod (12) and support (10) .
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| Illustration 10 | g00507842 |
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| Illustration 11 | g00498784 |
Note: The use of a pry bar might be necessary to line up support (10) with support assembly (8) . Place the pry bar between the recoil spring assembly and movable plate (3) of Tooling (A) to line up the support with the support assembly.
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| Illustration 12 | g00494710 |
- The weight of the recoil spring assembly is 175 kg (385 lb). Fasten a hoist 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 in order to align the centerline of the recoil spring assembly with the centerline of Tooling (A) .
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| Illustration 13 | g00498760 |
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| Illustration 14 | g00498781 |
Note: The hoist 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. After the recoil spring assembly is leveled and centered, install two pins (5) on the back side of reaction plate (2) , as shown.
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| Illustration 15 | g00494705 |
- Install Tool (D) on Tool (B) , as shown.
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| Illustration 16 | g00508687 |
- Operate Tool (B) and guide the end of the recoil spring assembly through the hole in reaction plate (2) . Again, check and make sure that the recoil spring assembly is level and centered in Tooling (A) . Make sure that a vertical centerline through the two pin holes is at a right angle to support (10) , as shown. Install the support. Position the welds in order to obtain dimension "Y" which is 30 ± 20 mm (1.2 ± 0.8 inch). Remove the hoist from the recoil spring assembly.
- Close covers (7) on Tooling (A) . Compress the recoil spring assembly with Tool (B) . Open the covers on Tooling (A) , and measure the assembled length of the recoil spring assembly. Measure the distance from the end of the support assembly to the mark on support (10) , as shown. Dimension "X" is the assembled length of the recoil spring assembly. The assembled length must be 530 ± 1 mm (20.87 ± 0.04 inch). If the assembled length is not correct, close covers (7) on Tooling (A) , and adjust the spring length with Tool (B) . If the assembled length is correct, install washer (11) and nut (6) . Tighten nut (6) with Tool (E) .
- Fasten a hoist to the recoil spring assembly. Remove the recoil spring assembly from Tooling (A) . Put 9S-3263 Thread Lock Compound on the threads of the two socket head bolts that hold lock strip (13) in place. Install the lock strip and the two socket head bolts that secure the lock strip. Bend the tab on the lock strip over the flats on nut (6) .
End By:
Install the front idler and recoil spring assembly as a unit. Refer to Disassembly and Assembly, "Front Idler and Recoil Spring - Install" in this manual.
Assembly Procedure for the Recoil Spring on CIPI Undercarriage Arrangements which are Based on 330C Track Type Excavators
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Table 3
| Required Tools |
| Tool |
Part Number |
Part Description |
Qty |
| A |
4C-9540 |
Recoil Spring Bench |
1 |
| B |
146-2457 |
Hydraulic Power Supply Gp |
1 |
| 223-3506 |
Hydraulic Cylinder and Lines Gp |
1 |
| C |
8S-9971 |
Adapter |
1 |
| D |
4C-4467 |
65 mm Socket |
1 |
| E |
9S-3263 |
Thread Lock Compound |
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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. |
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Note: Prior to assembling the recoil spring assembly, make sure that Tooling (A) is on a level surface.
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| Illustration 17 | g00902471 |
- Check the condition of the threads on rod (11) and nut (6) . If the threads are worn or damaged, use new parts for replacement.
- Assemble the recoil spring assembly loosely. Position spring (10) onto support (9) . Install rod (11) into support (9) . Position support (12) .
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| Illustration 18 | g00483426 |
- Install Tooling (C) on Tooling (B) .
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| Illustration 19 | g00494710 |
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| Illustration 20 | 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. 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) .
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Do not remove the hoist from the recoil spring assembly until the unit is leveled, centered and locked in the specified tooling. |
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- The combined weight of the recoil spring assembly is approximately 115.6654 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 in order to align the centerline of the recoil spring assembly with the centerline of Tooling (A) .
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| Illustration 21 | g00949740 |
The hoist has been removed from the recoil spring assembly in order 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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| Illustration 22 | g00498784 |
- Close covers (7) on Tooling (A) . Compress the recoil spring assembly with Tooling (B) .
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| Illustration 23 | g00902627 |
(X) Compressed length of the spring
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- Open the covers on Tooling (A) . Measure the assembled length of the recoil spring. The Compressed Length (X) must be 551.0 ± 1.0 mm (21.69 ± 0.04 inch).
- 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.
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| Illustration 24 | g00711947 |
- 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) .
- 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.
- 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).
End By:
Install the front idler and the recoil spring. Refer to Disassembly and Assembly, "Front Idler, Recoil Spring and Hydraulic Track Adjuster - Install".
