ORIFICE 3T7726 - Caterpillar

1. Make an adjustment to tooling (B) until the height is approximately 42.5 in. (108 cm). Make an adjustment to tooling (C) until the height is 28.5 in. (72.4 cm).
To avoid personal injury, 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.
2. 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) in position under the bevel gear case. The weight of the rear 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. 3. Remove two guard assemblies (1) and (2).4. Put the recoil spring under compression as follows: a) Put a slug (3) that is 3 in. (76.2 mm) in diameter and 2.5 in. (63.5 mm) long in the sprocket segment 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 (4) and washer (6). Tighten nut (5) by hand to hold the recoil spring in a shorter position. Move the machine forward slowly and remove the slug from the sprocket.5. Install guards (1) and (2) back on the machine.6. Make a separation of the track. See Separation of Tracks. 7. Remove guard assemblies (7) and (8) from the track roller frame. 8. Remove four bolts (9) and nuts that hold the cylinder to the yoke. Pull the front idler and yoke forward on the track roller frame. 9. Remove hydraulic track adjuster (10) from the recoil spring assembly. 10. Remove O-ring seal (11) from the front pilot of the recoil spring assembly.Install Hydraulic Track Adjuster
1. Install a new O-ring seal (1) in the front pilot of the recoil spring assembly. Put 1P808 General Purpose Lubricant on the seal. 2.