BOLT 5P0952 - Caterpillar

Illustration 1 g03847222Check the track adjustment. Check the track for wear and for excessive dirt buildup.
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. Allow the machine to coast to a stop without the use of the service brakes. Adjust the tracks while you are in the typical operating conditions of the machine. If packing conditions prevail on the workplace, the tracks should be adjusted without removing the packed material.
To measure the sag in the track, stretch a string over the grousers that are between the sprocket and the front idler. Take the measurement from the string to the top of the grouser at the maximum measurement. Dimension (A) is the maximum distance between the string and the grouser.
Illustration 2 g01109482If a machine does not have carrier rollers, the sag in the track is measured between the sprocket and the front idler. The correct adjustment of dimension (A) for conventional undercarriage is 115 10 mm (4.5 .4 inch).
Table 1
Track Sag
No Carrier Roller Minimum Target Maximum
Conventional 105 mm (4.1 inch) 115 mm (4.5 inch) 125 mm (4.9 inch)
Illustration 3 g01118207If the machine is equipped with a carrier roller, calculate the average of dimension (B) and dimension (C). The correct average value is 65 10 mm (2.6 0.4 inch) for the conventional undercarriage.
Table 2
Track Sag
Carrier Roller Minimum Target Maximum
Conventional 55 mm (2.2 inch) 65 mm (2.6 inch) 75 mm (3.0 inch) Adjustment for Loose Track
The following adjustment procedure is for a machine that measures too much sag in the track.
Illustration 4 g01019107
Do not attempt to tighten track when dimension (D) is 152 mm (6.0 inch) or more. The hard bottom attachment can be tightened to the point were (D) is no more than 152 mm (6.0 inch)Contact your Caterpillar dealer for track service or instructions.
Remove the access cover.
Illustration 5 g01019116
Add multipurpose grease (MPGM) through track adjustment valve (1). Add the MPGM until dimension (A, B, C) is correct.
Operate the machine back and forth to equalize the pressure. Allow the machine to coast to a complete stop. Do not use the brakes.
Remeasure dimension (D).Adjustment for Tight Track
The following adjustment procedure is for a machine that measures not enough sag in the track.
Loosen relief valve (2) slowly. Allow the grease to escape and the front track roller frame to retract.
Close the relief valve when the proper track tension is achieved.
Add MPGM through track adjustment valve (1) until dimension (A, B, C) is correct, if needed.
Install the access cover.Bolt Torque for Track Shoes
The torque requirement for track shoe bolts is 650 70 N m (480 50 lb ft). Tighten the bolts for an additional 120 degrees. If you are using bolts with a master link, tighten the bolts to