HOUSING 0011608 - Caterpillar

Check
Illustration 1 g01266539
Check the track adjustment. Check for wear and for excessive dirt buildup.If tracks are too tight, wear of the components will accelerate. If tracks are too loose, wear of the components will accelerate.
Move the machine forward for a distance of two times the length of the machine. Allow the machine to stop without the use of the service brake. Shut off the engine.
Stand on the track between the front idler and the track carrier roller in order to produce as much track sag as possible.
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Measure the track sag in two places on each track.
Place a tight string or a straight edge on top of the grousers between the carrier roller and front idler. Measure the distance from the straight edge to the grouser tip at the lowest point of sag.
Place a tight string or a straight edge on top of the grousers between the carrier roller and sprocket. Measure the distance from the straight edge to the grouser tip at the lowest point of sag.
Total the two measurements. Refer to Table 1 in order to determine the correct sag.
Table 1
    Minimum     Target     Maximum    
D3K, D4K, D5k     50 mm (2.0 inch)    
60 mm (2.36 inch)    
70 mm (2.75 inch)    
If this dimension is not correct, adjust the track. If the track appears to be too tight or too loose, proceed to "Track Adjustment".Track Adjustment
Do not remove any parts until all pressure has been relieved to avoid possible personal injury. Relieve pressure by opening relief valve one turn maximum. See maintenance guide for track adjustment procedure.
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.
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 typical operating conditions for the machine. If packing conditions prevail on the job, the tracks should be adjusted with packing material.Note: Perform Steps 2 through 6 on both sides of the machine.
Illustration 3 g01266564
Remove the cover for the track adjusting mechanism.
Illustration 4 g03203094
Remove protection guard (4) for fill and relief valve (5) .
By using a manual grease gun, add multipurpose grease (MPGM) through fill and relief valve (5) to tighten the track. To loosen the track, turn fill and relief valve (5) counterclockwise until the idler reverses and the track relaxes. Then, close fill and relief valve (5) at the proper track sag dimension listed in Table 1.
Install protection guard (4) over fill and relief valve (5) .
Install the cover for the track adjusting mechanism.
Repeat the procedure for the other track.