963C Track-Type Loader Track - Check/Adjust Caterpillar

Check the Track

Check the track for wear and for excessive dirt buildup.

1. Move the machine forward to a distance that is two times the length of the machine. Allow the machine to stop without the use of the service brake. Shut off the engine.
   Show/hide table

   Illustration 1	g00663282

2. Stand on the track between the front idler and the track carrier roller in order to produce as much track sag as possible.

3. Attach one end of a string to the grouser tip on the track shoe that is directly above track carrier roller (1). Make the string tight by pulling on the string. Attach the opposite end of the string to the grouser tip on the track shoe (2) that is directly above the front idler .

4. Measure the distance between the string and the tip of the grouser that is on the track shoe directly between the front idler and the track carrier roller in order to obtain dimension (A).

5. Dimension (A) should be approximately 50 mm (2.0 inch). If dimension (A) is not correct, adjust the track.

Track Adjustment

Show/hide table

Grease is under high pressure. Grease coming out of the relief valve under pressure can penetrate the body causing injury or death. Do not watch the relief valve to see if grease is escaping. Watch the track or track adjustment cylinder to see if the track is being loosened. Loosen the relief valve only one turn.

1. Move the machine forward for a distance of two times the length of the machine. Allow the machine to a stop without the use of the service brakes. Shut off the engine. Adjust the tracks while you are in the machine's typical operating conditions. If packing conditions prevail on the job, the tracks should be adjusted with packing material.
   Show/hide table

   Illustration 2	g01059608

2. Remove the cover for the track adjusting mechanism.
   Show/hide table

   Illustration 3	g00275290

3. Add grease with a grease gun in order to move the idler forward until the track is fully tight.
   Show/hide table

   Illustration 4	g00275291

4. Use a straight edge against the face. Mark the rod with a pencil or with a marking pen. Make a mark that is in line with the face.
   Show/hide table

   Illustration 5	g00275292

5. Mark the rod 10 mm (.40 inch) toward the idler from the first mark.

6. Open the relief valve. Allow the idler to move back until the second mark is behind the face. Close the relief valve.

7. Use the grease gun to move the idler forward until the second mark is in line with the face.
   Show/hide table

   Illustration 6	g00563913

8. Measure dimension (X), as shown above. Dimension (X) is the distance from the face of the bulkhead to the center of the pin in the yoke. If dimension (X) is less than 98 mm (3.9 inch), proceed to Step 9.

   If dimension (X) is greater than 98 mm (3.9 inch), the front idler must be moved forward to a secondary position. Refer to Power Train Disassembly and Assembly, RENR5232, "Track - Adjust" for this procedure.

9. Install the cover and tighten the bolts to a torque of 75 ± 15 N·m (55.50 ± 11 lb ft).

   Note: The track sag after this adjustment procedure should be 50.0 mm (2.0 inch). If track sag is not 50.0 mm (2.0 inch), repeat the procedure.

10. Repeat Step 2 through Step 9 for the other track.

Bolt Torque for Track Shoes

Illustration 7	g00275294

The torque requirement for track shoe bolts is 170 ± 40 N·m (120 ± 30 lb ft). Tighten the bolts for an additional 120 degrees. If you are using bolts with a master link, tighten the bolts to a torque of 170 ± 40 N·m (120 ± 30 lb ft). Tighten the bolts for an additional 180 degrees.