COMPRESSOR GP-A 0R9900 - Caterpillar

ILLUSTRATION 1 TRACK IN THE FULL TIGHT POSITION
To prevent personal injury, never visually inspect the vent holes or valves to see if grease or oil is coming out of them. Make sure the vent holes are clean before the tension is released on the track. Watch the front roller frame to see that it moves.
Do not tighten the track if clearance (A) between the front of the stop on the recoil rod and the rear face of the equalizer bar support is less than ... .125 in.(3.18 mm)
(1) Torque for fill and relief valves ... 25 5 lb. ft.(35 7 N m)For correct track adjustment, use the procedure that follows: The track adjustment procedure should be performed under the same conditions in which the machine is used. Packing must NOT be removed from the track, if packing conditions exist on the job.1. Move the machine forward a distance of twice its length. Allow the machine to come to a stop without the use of the brakes.
ILLUSTRATION 2
ILLUSTRATION 3 CORRECT TRACK ADJUSTMENT2. Use the hydraulic track adjuster and move the idler forward (toward the front of the machine) until the track is in the full tight position. Make a mark (B) on the track roller frame, even with the front face of the idler bearing assembly. See ILLUSTRATION 1.3. Make a mark (C) on the track roller frame 1/2 in. (13 mm) behind mark (B).4. Open the relief valve, and allow the idler to move back, until the front face of the idler bearing assembly is behind mark (C). See ILLUSTRATION 2. It is necessary to move the machine in a back and forth motion to move the idler back.Close the relief valve.5. Use the hydraulic track adjuster, and move the idler forward again, until the front face of the idler bearing assembly is even with mark (C) on the track roller frame. See ILLUSTRATION 3.