SHAFT,LOWER 0939887 - Caterpillar

Stump Removal: Lift the blade while pushing.Push Loading
1. Position the dozer blade edge slightly above the ground level. 2. The tractor should not be traveling more than 5 km/h (3 miles per hour) faster than the scraper when contact is made. 3. Contact the push block squarely. Do not allow the blade or push block to contact the scraper tires.4. Do not lift the rear of the scraper off the ground. 5. Upshift the tractor, when the cut is complete, to help scraper get out of cut.
Blade in float may drop. Put blade control lever in a slight raise position before leaving scraper. Follow advice of the Caterpillar dealer's Sales Department on use of tandem pushing.In the wrong soil conditions, the tremendous available power could cause very extensive damage to the bowl, or shank of the tractor being pushed.Equip the tractors properly for tandem pushing.
6. When tandem pushing, the front tractor must be equipped with a case mounted tandem push block.Ripping
Use FIRST speed for most ripping operations. It is better to use additional shanks, where practical, rather than to increase speed.Always use center shank when ripping with one shank. If material breaks up satisfactorily, more shanks may be used.Cross rip only when necessary.When ripping for scraper loading, rip in same direction that scrapers will load.Rip downhill whenever possible.
Do not turn or back the machine while shanks are in the ground. Twisting strain on the shanks and tips may cause failure. Inspect the ripper tips frequently for excessive wear.
Ripper Operating Hints
In most cases it is desirable to rip as deep as possible. Sometimes it is better to rip at partial depth and remove the material in its natural layers.Keep material on top of the unripped formation to cushion the machine and provide traction.When final material size must be relatively small, close spacing of passes is recommended.Packed Soil, Hard Pan, Clay, Shale or Cemented Gravel
Three shanks work well in these materials. Use as many shanks as possible to break material to desired size, without stalling or hanging up the machine.Rock with Fractures, Faults and Planes of Weakness
Use two shanks where rocks break out in small pieces, and the machine can handle the job easily. When the machine begins to stall or tracks spin, use only the center shank.Solid Rock, Granite or Hard-to-Rip Material
Use one shank in tough-to-rip material or material that tends to break out in large slabs or pieces.Always use the center shank when one-shank ripping.Asphalt Road Surfaces
Raise the ripper shanks to lift out and break material.Concrete Road Surfaces
Use a single ripper shank. Ripper is especially effective in severing reinforcing rods or mesh.Adjustable Ripper
The shank on the ripper has angle and length adjustment features.To achieve the maximum performance throughout each ripping pass, the angle of the shank must be varied, as described below. To insert the ripper into the material to be ripped, adjust the angle of the shank back vertical position. This will give the correct tip angle for easy entry into the material. The angle will