Usage:
start by:
a) remove hydraulic track adjusters*
*Do Steps 1 and 2 before the hydraulic track adjusters are removed.
1. Remove cover (1). Remove track roller frame guards (2) and (3).
2. Put the recoil spring under compression as follows:
a) Put a slug (6) that is 3 in. (76.2 mm) in diameter and 2.5 in. (63.5 mm) long in the sprocket as shown. Start the machine and move it to the rear slowly. Make sure when the slug makes contact with the track, it makes contact with a bushing as shown.
b) As the machine is moved to the rear with the slug in position, the recoil spring will be put under compression.
c) Move the machine until the front pilot of the recoil spring assembly is approximately .125 in. (3.2 mm) away from the stops that are fastened to the track roller frame.
d) Remove bolt and washer (5). Tighten nut (4) by hand to hold the recoil spring in a shorter position. Move the machine forward slowly and remove the slug from the sprocket.
 |
Do not remove the recoil spring from the track roller frame until the pressure is released from the two front stops. |
 |
3. Remove bolts (7). Remove front stops (8) from the track roller frame.
4. Fasten a hoist and tool (A) to the recoil spring. Remove the recoil spring (9). The weight of the recoil spring is 135 lb. (61 kg).
Install Recoil Springs
1. Fasten a hoist and tool (A) to the recoil spring. Put the recoil spring (1) in position in the roller frame.
2. Put the front stops (2) in position and install the bolts that hold them.
3. Install the hydraulic track adjusters. See INSTALL HYDRAULIC TRACK ADJUSTERS.
4. Make a connection of the track. See CONNECTION OF TRACK.
5. Put the recoil spring under compression to permit the pilot assemblies of the recoil spring assembly to be put against the stops in the track roller frame as follows:
a) Put slug (3) in position in the sprocket as shown. Start the machine and move it to the rear slowly. Make sure when the slug makes contact with the track, it also makes contact with a bushing as shown.
b) As the machine is moved to the rear with the slug in position, the recoil spring will be put under compression.
c) Move the machine until the recoil spring has enough compression on it so the nut can be loosened by hand. Loosen the nut a small amount. Move the machine forward and check to see that the front pilot assembly of the recoil spring is against the stops on the track roller frame. If the pilot is not against the stops, do Steps 5a, b and c again. When the pilot is against the stops, remove the slug from the sprocket.
6. Install the washer and bolt on the recoil spring.
7. Install the guards and cover on the track roller frame.
Disassemble Recoil Springs
start by:
a) remove recoil springs
|
The recoil spring is assembled with a force of several tons. The correct tooling and procedure must be used during disassembly of the recoil spring. |
|
1. Disassemble the spring with tooling (A) as follows:
a) Fasten a hoist to the recoil spring. Put the spring in position between plates (1) and (2). Put the centers of pilots (5) and (7) in alignment with centers of plates (1) and (2). Operate the hydraulic cylinder enough to hold the spring in place.
b) Make an adjustment to nuts (3) so the distance between plates (1) and (2) is the same as each of the three legs (6).
c) Turn nuts (4) until there is 1 in. (25.4 mm) between nuts (3) and plate (8).
|
The distance between the plates must be the same at each leg at all times so the spring will not twist and come out of tooling (A). |
|
d) Put the spring under enough compression to remove nut (9). Remove nut (9).
e) Slowly release the compression on the spring.
f) Turn nuts (4) and move plate (8) and cylinder away from the spring. Put spring under compression. Turn nuts (3) until they are 1 in. (25.4 mm) from plate (8). Slowly release compression on the spring.
2. Fasten a hoist to the spring. Remove the spring (10), pilot (5), pilot (7), sleeve (11), and bolt (12) from tooling (A). Weight of the spring is 75 lb. (34 kg).
Assemble Recoil Springs
|
The recoil spring must be assembled with a force of several tons. The correct tooling and procedure must be used during assembly of the recoil spring. |
|
1. Assemble the recoil spring with tooling (A) as follows:
a) Install pilot (5) into spring (2). Install bolt (4) in pilot (5). Put sleeve (3) on the bolt.
b) Fasten a hoist to the spring. Put the spring, pilot, bolt, and sleeve in position between plates (6) and (7). Put pilot (1) between plate (6) and the end of the spring. Put the centers of pilots (1) and (5) in alignment with the centers of plates (6) and (7). Operate the hydraulic cylinder enough to keep the spring in place.
c) Make an adjustment to nuts (11) so the distance between plates (6) and (7) is the same at each of the three legs (9).
|
The distance between the plates must be the same at each leg at all times so the spring will not twist and come out of tooling (A). |
|
d) Put the spring under compression. Make sure that bolt (4) is in alignment with the holes in pilot (1) and plate (6). Turn nuts (10) until they are against plate (7).
e) Move plate (8) and the cylinder toward the spring. Put the spring under compression until the distance between the outer surfaces of pilots (1) and (5) is 18.25 in. (46.4 mm). Install nut (12) on the bolt.
f) Fasten a hoist and remove the recoil spring from tooling (A).
end by:
a) install recoil springs