Separation Of Tracks
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The adjuster cylinder for the track is under high hydraulic pressure. Do not visually inspect the relief valve to see if grease is released when it is opened. Check the adjuster cylinder to see that it moves to the rear into the front pilot of the recoil spring. This warning applies any time the tracks are loosened or tightened. |
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1. Loosen the track as follows:
a. Turn relief valve (1) one turn counterclockwise to permit grease to be released from the vent hole below the relief valve. If the track does not loosen go to Step b.
b. Turn fill valve (2) one turn counterclockwise to permit grease to be released from the vent hole below the fill valve. If the track still does not loosen, start the machine and move it forward and backward. If grease is still not released, go to Step c.
c. Install a slug that is 76.2 mm (3 in.) in diameter and 63.5 mm (2.5 in.) long between the track and sprocket segment. Move the machine to the rear so the track will be forced up by the bar. This will put tension on the track and move the front idler and track adjuster to the rear against the force of the recoil spring. This will push grease out of the vent holes.
2. Make an adjustment to tooling (B) until the height is approximately 108 cm (42.5 in.). Make an adjustment to tooling (C) until the height is 72.4 cm (28.5 in.).
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Keep away from the area of the machine when it is driven up on tooling (A) at the front of the machine and the rear of the machine. Tooling (A) can come out from under the tracks with force if it is not installed correctly. |
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3. Put tooling (A) at the rear of the machine as shown. Start the machine and move it to the rear and up on tooling (A). Put tooling (C) under the bevel gear case. The weight of the machine will not be on tooling (C) until the front of the machine is lifted with tooling (A). Put tooling (A) in position in front of the machine. Move the machine slowly forward and up on tooling (A). As the front of the machine goes up, the rear of the machine will come down on tooling (C). Lift the front of the machine until tooling (B) can be installed under the radiator guard and main frame of the machine as shown. Tooling (A), at the rear of the machine, will be free to remove from under the tracks. Move both tracks to the rear until tooling (A) is free at the front of the machine.
NOTE: If the right track is removed, the left track can be held so it does not turn during the removal of the right track. If the left track is to be removed, the right can be held so it does not turn. In the following procedure, the right track is removed.
4. Start the machine. Move the right track backward or forward until the master shoe is just below a horizontal line through the center of the sprocket. Put tool (D) in position under the track shoe that is below the master shoe as shown. Move the track backward until it is rigid on tool (D).
5. Remove bolts (1) and (2). Remove master shoe (3). Make a separation of the master links.
6. Hold the lower part of the track up with a hoist on the forks or a lift truck. Remove tool (D) and lower the track to the floor.
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Keep away from the area of the machine when the track is removed from the track roller frame. |
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7. Move the right track forward slowly until the track is off of the track roller frame.
NOTE: If necessary, use a lift truck to remove the track completely from the track roller frame.
Connection Of Tracks
1. Put tooling (D) in the track link and on the sprocket shaft as shown.
2. Start the machine. Move the sprocket on the right side of the machine forward until the track is pulled up on the sprocket and the end of the track is forward of a vertical line through the center of the sprocket.
3. Install tool (E) below the first bushing and between the second track shoe and the top of the second bushing. Move the sprocket forward slowly and use tool (E) as a guide to put the track in position over the two carrier rollers and the front idler.
4. Install pin (1) from tooling (D) in the track link as shown. Install tooling (F) in the other track link as shown. Connect the hook and chain together.
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| NOTICE |
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Make sure the ends of the master links are in a position to prevent damage to them when the track is pulled under the track roller frame. |
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5. Start the machine. Move the right sprocket forward until the master link is just below a horizontal line through the center of the sprocket.
6. Put tool (G) under the first track shoe, at the lower end of the track, as shown. Move the sprocket backward until the two links can be put together.
7. Put master shoe (2) in position on the master links as shown. Put 4S9416 Anti-Seize Compound on the threads of the bolts that hold the master shoe. Install the four bolts and tighten to a torque of 295 ± 55 N·m (220 ± 40 lb ft). Tighten the bolts 180° or more.
8. Remove tool (G).
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Keep away from the area of the machine when it is driven up on tooling (A) at the front ofthe machine and the rear of the machine. Tooling (A) can come out from under the tracks with force if it is not installed correctly. |
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9. Put tooling (A) at the front of the machine as shown. Start the machine and move it slowly forward and up on tooling (A). Remove tooling (B) from under the main frame of the machine.
10. Put tooling (A) in position behind the tracks as shown. Move the machine slowly to the rear and up on tooling (A). Remove tooling (C) from under the bevel gear case. Move the machine a little farther until tooling (A) is free to be removed at the front of the tracks. Move the machine slowly forward off of tooling (A) at the rear of the machine.
11. Make an adjustment to the tracks. See, Track Adjustment in Specifications.
Disassemble Tracks
1. Remove the three track shoes over the area of the track that has damage. Remove the track. See, Separation Of Tracks. Put both ends of the track on 15.2 cm (6 in.) wood blocks.
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| NOTICE |
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As the track assembly is disassembled, do not damage the parts. Put all of the parts in a position so the ends of the bushings, the thrust rings, pins and seals can not be damaged. |
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2. Push the track pin part of the way out of the track assembly with tooling (A).
3. Check the track pin for a groove (wear step) caused by wear. If the track pin does not have a groove (wear step), remove it all of the way out of the track assembly. If the track pin has a groove (wear step), push the track pin out 2/3 of its length.
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| NOTICE |
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Do not remove the track pin all of the way. Damage to the pin bore and link will be the result. |
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4. Remove tooling (A). Make a separation of the track pin with a cutting torch. Hit the short end of the track pin with a hammer until it is inside the bushing.
5. Remove the next track pin.
6. Put tooling (B) between the track links as shown. Push the links away from each other enough to make a separation of the track chain.
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| NOTICE |
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Use shim stock as protection for the face of the seals when the track chain is pulled apart. |
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7. Remove thrust rings (1).
8. Remove the link, bushing (2) and link (3) with tooling (C).
9. Remove bushing (4) with tooling (C).
10. Remove the seals from the links.
NOTE: If either the seal or the bushing has been damage, use new parts for replacement. Do not use parts from another track assembly.
Assemble Tracks
NOTE: Check all of the parts of the track assembly for wear and damage. Make sure the parts are clean and dry. Check the thrust rings for wear. New thrust rings are 10.69 ± 0.05 mm (.421 ± .002 in.) thick.
1. Put 1P3482 Pin Adapter (2) from tooling (A) in the frame (1) of the press arrangement with the counterbore toward the ram as shown.
2. Put bushing (4) into link (3) with tooling (A). Push the bushing until it makes contact with the pin adapter. The bushing must be 1.80 ± 0.25 mm (.071 ± .010 in.) from the outer surface of the link.
3. Clean both ends of bushing (5) until they are clean and dry. Put clean SAE 90 oil on both ends of the bushing.
4. Put pilot pin (9) in the bushing with the tapered end of the pin as shown.
5. Install thrust rings (7) and (8).
6. Install seals (6).
7. Make sure the seals and thrust rings are clean and dry. Put clean SAE 90 oil on the lip of the seal and the ends of the bushing.
8. Install the links in the bushings with tooling (A).
9. If a new track pin is used, put clean SAE 90 oil on the rubber stopper (10). Put the rubber stopper in tool (B).
10. If lubrication tooling is available, the pins do not have to be filled with oil at this time. If lubrication tooling is not available and the rubber stopper is closed, use a punch and push the small plug which is in the center of the rubber stopper into the drilled passage of the pin. Put masking tape over the hole in the side of the pin. Put clean SAE 90 oil in the hole of the rubber stopper with an oil can.
11. Install the rubber stopper in pin (11) with tool (B).
12. Put track pin (11) in tooling (A) with the oil hole up as shown. Remove the masking tape from the oil hole.
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| NOTICE |
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To prevent damage to the thrust rings, install tooling (A) so that the track pin will push against the large diameter of the pilot pin. |
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13. Push the track pins into the links until 19.05 mm (.75 in.) of the pin is shown. Remove the pilot pin from the press arrangement.
14. Put 7M7260 Liquid Gasket Material on pin (11) and in the pin bore of link (12).
15. Push pin (11) in to the track assembly all of the way. Remove tooling (A).
16. Put tooling (C) between the links. Push the links apart far enough to let the links and bushings go together.
17. Make sure both ends of bushing (4), seals (13) and thrust rings (14) are clean and free of dirt or foreign material. Put clean SAE 90 oil on the seals (13) and the ends of bushing (4). Install thrust rings.
18. Put shim stock (15) between the bushings and links as protection for the face of the seals from damage. Move the links and pins together. Remove the shim stock and tooling (C).
19. Install the pilot pin to keep the links, bushings and thrust rings in alignment.
20. Install the track pin. Follow Steps 12 through 15.
21. If the track pins are not filled with SAE 90 oil during assembly, fill the track pins as follows:
a. Push the plug into the rubber stopper in the drilled passage of the track pin.
b. Use tool (D) to fill the pins with oil.
c. Install plug (16).
22. Install the track. See, Connection Of Tracks.
23. Install the three shoes on the track assembly. Install the bolts that hold them in position. Tighten the bolts to a torque of 295 ± 55 N·m (220 ± 40 lb.ft.). Tighten the bolts 120° more.
