KIT-BEARING 4151854 - Caterpillar

Sudden movement or accidental starting of the machine can cause personal injury or death to persons on or near the machine.To prevent personal injury or death, perform the following:Park the machine on a smooth, level surface.Lower the work tool to the ground and engage the parking brake.Stop the engine and remove the key.Block the wheels and install the steering frame lock.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g00747654
Location of the Steering Frame Lock
Articulate the machine to the straight ahead position. Install the steering frame lock.Tip and Tilt Cylinder (Drift and Isolation Test)
834H Wheel Dozer
Start the engine. Operate the implements at least five times in order to heat the hydraulic oil to normal operation temperature. This is done in order to perform the test.
Set the blade flat on solid ground. Extend the tip cylinder to one-half of total rod extension.
Raise the front wheels off the ground by lowering the right side of the blade (Tilt Right).
Place the tilt control lever in the HOLD position.
Shut off the engine and monitor the tip and tilt cylinder for movement. Record the movement. Refer to Table 1 for maximum drift.
Set the blade flat on solid ground. Extend the tip cylinder to one-half of total rod extension.
Raise the front wheels off the ground by lowering the left side of the blade (Tilt Left).
Place the tilt control lever in the HOLD position.
Shut off the engine and monitor the tip and tilt cylinder for movement. Record the movement. Refer to Table 1 for maximum drift.
Table 1
Tip and Tilt Cylinder Drift
Oil Temperature 38° C (100 °F)
to
49 °C (120 °F) 49° C (120° F)
to
66 °C (150 °F) Above 66° C (150° F)
Time Interval in Minutes 5 2.7 1.7
Maximum Permissible Drift 5 mm (0.2 inch) 5 mm (0.2 inch) 5 mm (0.2 inch) The following problems may cause excessive amounts of cylinder drift.
Hydraulic oil line connections may be loose. The hoses that are between the control valve and the rod end of the lift cylinder may be damaged.
The piston seals in the lift cylinder are leaking.
The control valve is