583R Pipelayer Power Train Caterpillar

Removal Procedure

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1. Remove the track adjuster.

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Personal injury can result from performing service on the track roller frame. Refer to Special Instruction, SMHS8273 for inspection and removal procedures before performing any service.

Note: All of the part numbers in this story are part of Tooling (A) and Tooling (B).

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Illustration 1	g00545871

1. Remove eyebolt (1) that holds the cable assembly to the front track roller frame.

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Illustration 2	g00545866

2. Remove four bolts (2) and two stops (3) .

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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.

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Personal injury or death can result from a compressed recoil spring being released suddenly using incorrect disassembly procedures. A recoil spring that is still held in compression can result in the recoil spring being released unexpectedly with extreme force which could cause serious injury or death. Make sure that the correct disassembly procedure is used, if a front track roller frame that has a crack in the parent metal or weld connection (or a tubular section that has separated from the front of the frame assembly) when the recoil spring is still held in compression. Refer to Special Instruction, SMHS8273 which contains the disassembly procedure that must be used to decrease the possibility of injury while performing service on the track roller frame.

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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

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Illustration 3	g00500934
Tooling (A)

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NOTICE
The procedure that follows must not be used unless stop plates (16) have been welded on each of the four opening (slots) in the 6V-2168 Plate. These plates make a correct alignment with the 6V-2168 Plate on the 1M-6766 Studs. The plates also prevent movement of the studs from the openings. The dimensions of the stop plates are 25.4 mm ? 50.8 mm ? 9.6 mm (1.0 inch ? 2.0 inch ? .38 inch).

3. Install Tooling (A) in order to remove the recoil spring and the guide. Install the Tooling in the following manner:

   1. Install 1M-6766 Studs (5) in the front track roller frame, as shown. See Illustration 3.

   2. Install 9S-5558 Stud (15) in the flanged end of 5P-8620 Pilot (6). Install the 7H-7539 Nut (not shown) for holding the stud in position. Install the assembly in the front track roller frame. Install the long threaded end of the stud toward the outside of the frame.

   3. Install 5P-8713 Plate (7), 5P-8712 Bushing (8), 6V-0113 Cylinder (9), 5P-8713 Plate (10), and 6V-2168 Plate (17) on the studs.

   4. Install FT1408 Spacers (11), FT1409 Spacers (12), 9H-1031 Washers (13), and 2J-3505 Nuts (14) on 1M-6766 Studs (5) .

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   NOTICE
   Be sure that the 5P-3100 Pump pressure line from the head end of the 6V-0113 Cylinder is connected through a 1S-8937 Valve. The valve is needed to control the pressure in order to gradually release the recoil spring.

   5. Connect the 5P-3100 Pump to 6V-0113 Cylinder (9). Extend the cylinder rod out of the cylinder by approximately 114 mm (4.5 inch).

   6. Fasten a hoist to Tooling (A). Be sure that the 1M-6766 Studs are parallel. Also, the studs must be the same distance from stop plates (16) on 6V-2168 Plate (17) .

   7. Put 5P-8620 Pilot (6) in the center of recoil spring retainer (4). Tighten 2J-3505 Nuts (14) for holding the assembly in the correct alignment.

   8. Measure the distance from the plate to the face of the front track roller frame. Measure the plate at all four corners. Make an adjustment to 2J-3505 Nuts (14) so that all four corners of 6V-2168 Plate (17) are the same distance from the face of the front track roller frame.

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   NOTICE
   The recoil spring retainer must never be more 12.7 mm (.5 inch) from the recoil spring while the spring is being removed. Be sure that the pressure reading on the pressure gauge of the tooling gradually decreases during all the steps of the procedure. If the pressure decreases suddenly and the recoil spring has not moved approximately 228.6 mm (9.0 inch) out of the front track roller frame, the spring guide has not released correctly. Do not remove the recoil spring retainer at this time. Refer to Special Instruction, SMHS8273 before proceeding with removal of the recoil spring.

   9. Use only enough pressure to extend the cylinder rod enough to compress the spring so that the recoil spring retainer can be turned. Close the 1S-8937 Valve and turn the pump valve to the "Retract Cylinder Rod" position.
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   Illustration 4	g00500936
   Tooling (A)

   10. Use a piece of 12.7 mm ? 50.8 mm ? 609.6 mm (.5 inch ? 2.0 inch ? 24 inch) bar stock to turn recoil spring retainer (4). Turn the retainer counterclockwise in order to move the retainer out of the front track roller frame by 12.7 mm (.5 inch). Slowly release the cylinder pressure through the 1S-8937 Valve and allow the recoil spring to extend 12.7 mm (.5 inch). Measure the distance on the cylinder rod while the cylinder rod is retracting. Close the 1S-8937 Valve .

   11. Turn the recoil spring retainer outward by an additional 12.7 mm (.5 inch). Slowly release the cylinder pressure with the 1S-8937 Valve and retract the cylinder rod by the same distance. Close the 1S-8937 Valve. Do this procedure until the cylinder rod is 6.35 mm (.25 inch) from being fully retracted.

   12. When the cylinder rod is near the fully retracted position, turn recoil spring retainer (4) clockwise in order to hold the recoil spring and remove the force from the cylinder rod. Retract the cylinder rod.

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Illustration 5	g00500938
Tooling (A)

4. Install Tooling (B) in the following manner:

   1. Remove 2J-3505 Nuts (14), 9H-1031 Washers (13), FT1409 Spacers (12), and FT1408 Spacers (11) from the studs.
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   Illustration 6	g00500939
   Tooling (B)

   2. Extend 6V-0113 Cylinder (9) until the cylinder rod is extended by approximately 114 mm (4.5 inch) out of the cylinder.

   3. Install 9H-1031 Washers (13) and 2J-3505 Nuts (14) on the 1M-6766 Studs. Measure the plate at all four corners. Make an adjustment to 2J-3505 Nuts (14) so that all four corners of 6V-2168 Plate (17) are the same distance from the face of the front track roller frame.

   4. Use bar (18) to turn recoil spring retainer (4) counterclockwise in order to move the retainer out of the front track roller frame by 12.7 mm (.5 inch). Follow the procedures from Step 3.k.
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   Illustration 7	g00500960
   Tooling (B)

   5. When the cylinder rod is near the fully retracted position and the recoil spring retainer is not extended by 228.6 mm (9 inch) out of the front track roller frame, make an adjustment to 2J-3505 Nuts (14). Turn the nuts outward to the ends of 1M-6766 Studs (5) and extend the cylinder rod by the same distance.

   6. Measure the distance from the plate to the face of the front track roller frame. Measure the plate at all four corners. Make an adjustment to 2J-3505 Nuts (14) so that all four corners of 6V-2168 Plate (17) are the same distance from the face of the front track roller frame.

   7. Slowly release the pressure of the spring and turn recoil spring retainer (4) outward while the cylinder rod is retracted in steps by 12.7 mm (.5 inch). Follow the procedures from Step 4.d until the force of the spring is completely released.

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Illustration 8	g00500962

5. Remove Tooling (B). Fasten a hoist to recoil spring retainer (4) and remove the retainer. The weight of the retainer is 36 kg (80 lb).

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Illustration 9	g00500964

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Illustration 10	g00500965

6. Attach a hoist to guide assembly (19) and remove the guide assembly. The weight of the guide assembly is 30 kg (66 lb).

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Illustration 11	g00500966

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Illustration 12	g00500968

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Illustration 13	g00500967
Typical example

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NOTICE
Do not damage the threads on the inside of the front track roller frame when you remove the recoil spring.

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NOTICE
Tube (21) slides in recoil spring (20). Recoil spring (20) must be kept level so that the spring does not slide off the tube unexpectedly. If the spring slides unexpectedly, you could drop the spring.

7. Tube (21) and recoil spring (20) together weigh 194 kg (427 lb). Put a bar in position in the tube and the recoil spring, as shown. See Illustration 11. Use a lifting strap on the bar next to the spring and attach a hoist to the bar. Counterbalance the tube and the recoil spring at the opposite end of the bar. Use the hoist to remove tube (21) and recoil spring (20) from the front track roller frame.

8. Remove tube (21) from recoil spring (20). The weight of the tube is 66 kg (145 lb).