Usage:
Master Link And Master Shoe
Sealed And Lubricated Track Assembly
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The machine must be on a level hard surface before a separation of the track is made. |
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1. Remove two bolts and open track adjuster cover (2).
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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 open. Look to see that the track has loosened. Use this warning any time the tracks are loosened or tightened. |
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2. Loosen the track as follows:
a) Turn the relief valve (1) one turn counterclockwise to permit grease to be released from the track adjuster. If the track does not loosen go to Step b.
b) Turn fill valve (3) one turn counterclockwise to permit grease to be released from the track adjuster. 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 piece of round bar stock between the bushing and sprocket inside the links. Move the machine to the rear so the track will be pushed up by the round bar stock. This will put tension on the track and move the track adjuster in.
3. Move the track until the master shoe is just below a horizontal line through the center of the sprocket. Put tool (A) in position under the track shoe that is below the master shoe as shown. Move the track backward until it is rigid on tool (A).
4. Remove bolts (4). Remove master shoe (5).
5. Make a separation of the master links (6).
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Keep away from the front of the machine when a separation of the track is made. A minimum distance of 13 ft. (3.96 m) is needed in front of the machine to permit the track to move out on to the floor. |
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6. Move the machine forward slowly until the track is off the track roller frame.
Connection Of Tracks
1. Fasten tooling (A) to the master links and sprocket as shown.
2. Move sprocket 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 as shown. Remove tooling (A).
3. Install tool (B) between the first bushing in the link and the sprocket.
4. Move the sprocket forward. Use tool (B) to guide the track over the track carrier roller and front idler.
5. Put tool (C) in position under the track shoe that is below the master shoe as shown.
6. Move the track forward until the master links (1) are in alignment.
7. Put master shoe (2) in position on the master links as shown. Put 9M3710 Anti-Sieze Compound on the threads of the bolts that hold the master shoe. Install the four bolts and tighten to a torque of 180 ± 30 lb.ft. (250 ± 40 N·m). Tighten the bolts 180° more.
8. Tighten the relief valve to a torque of 25 ± 5 lb.ft. (35 ± 7 N·m). If the fill valve was loosened, tighten it to a torque of 25 ± 5 lb.ft. (35 ± 7 N·m).
9. Make an adjustment to the track. See TRACK ADJUSTMENT in D4E TRACTOR POWER TRAIN 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 6 in. (15.2 cm) wood blocks.
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As the track assembly is disassembled, do not cause damage to 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. |
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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Do not remove the track pin all of the way. Damage to the pin bore and link will be the result. |
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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Use shim stock as protection for the face of the seals when the track chain is pulled apart. |
7. Remove thrust rings (1) from the links.
8. Remove the link, bushing (2) and link (3) with tooling (C).
9. Remove bushing (4) from the link with tooling (C).
10. Remove the seals from the links.
NOTE: If either seal or bushing has 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 .421 ± .002 in. (10.69 ± 0.05 mm) 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 .071 ± .010 in. (1.80 ± 0.25 mm) 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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To prevent damage to the thrust rings, install tooling (A) so the track pin will push against the large diameter of the pilot pin. |
13. Push the track pins into the links until .75 in. (19.05 mm) 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 (14).
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 220 ± 40 lb.ft. (295 ± 55 N·m). Tighten the bolts 120° more.