ELECTRONICS GP 2541661 - Caterpillar

Recoil Spring Disassembly
The springs in the recoil spring assembly are assembled under a force of several tons. During disassembly and assembly, is is imperative that the proper tools be used in the proper manner when performing these operations.
To disassemble the recoil spring assembly, use a press with a minimum throat depth of 33 in. (838,2 mm) and an 8 in. (203,2 mm) ram travel.1. Position the recoil spring assembly in the press with the front pilot up as illustrated.
2-Recoil spring bolt nut. Apply enough pressure to the recoil spring assembly to remove the nut.3. Back off the press to decompress the recoil spring.
The recoil spring assembly parts identified are: 1-Locking bolt and washer. 2-Recoil spring bolt nut. 3-Rear pilot. 4-Sleeve. 5-Recoil spring. 6-Front pilot. 7-Recoil spring bolt.Recoil Spring Assembly
1. Position the rear pilot on the press bed. Install the recoil spring, sleeve and front pilot.2. Install an FT572 Guide Pin onto the recoil spring bolt. Install the recoil spring bolt and guide pin as illustrated.
3-With the recoil spring assembly centered beneath the press ram, compress the recoil spring to 20.50 in. (520,7 mm) for 951 Traxcavator and 21.38 in. (543,1 mm) for 941 Traxcavator. Measure from the rear face of the front pilot to the front face of the rear pilot. 4-Remove the FT572 Guide Pin.5. Install the recoil spring bolt nut and tighten against the rear pilot.Track Adjusting Mechanism
Removal and Installation (Screw Adjusting Type) (951 Illustrated)
1. Separate the track. See the topic SEPARATING TRACK.
2-Support. 3-Idler. 4-Track adjusting screw. 5-Adjusting nut. Turn adjusting screw out of adjusting nut. Idler (3) will be moved forward when the adjusting screw is turned out of the adjusting nut.
The components of the screw-type track adjuster are: 4-Track adjusting screw. 5-Adjusting nut. 6-Locking bolt and washer. 7-Recoil spring rear pilot. 8-Sleeve. 9-Recoil spring bolt nut. 10-Recoil spring.Removal and Installation (Hydraulic Adjusting Type) (951 Illustrated)
1. Separate the track. See the topic SEPARATING TRACK.2. Move the front idler as far forward as possible.
Before attempting to remove any part of the track adjusting mechanism, be certain the hydraulic pressure in the track adjusting cylinder is completely relieved and the cylinder can be moved to the rear into the recoil spring front pilot.
At installation see the topic FILLING AND BLEEDING THE HYDRAULIC TRACK ADJUSTER.
3-Bolts (four). 4-Bolts (six). 5-Yoke and recoil rod. 6-Track adjusting mechanism. Cylinder (Move to the rear into the recoil (spring front pilot).
7-Seal. 8-Anti-extrusion ring. The beveled edge of the anti-extrusion ring faces the cylinder.9. Remove the hydraulic track adjuster cylinder assembly from the recoil spring front pilot.Hydraulic Track Adjusting Mechanism Disassembly
1-Anti-extrusion ring. 2-Seal. 3-Piston. 4-Ring. 5-Packing. 6-Rings. Install with cuts 180° apart.Filling And Bleeding The Hydraulic Track Adjuster
Use the following procedure to bleed the air on the initial filling of the hydraulic track adjuster cylinder.
The components used to fill and bleed a typical hydraulic track adjuster are: 1-Fill valve. 2-Relief valve. 3-Relief valve vent holes.1. Loosen the relief valve one turn. Force SAE 30 lubricating oil through the fill valve.2. When the oil flowing