RIPPER AR 3823453 - Caterpillar

Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
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 attachments have been lowered, 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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Place blocks around the drums and/or tires.
Illustration 1 g01066631
Console In Operator Station (1) Parking brake switch
Pull up on parking brake switch (1) in order to release the parking brake.
Illustration 2 g01066645
Axle Shaft (2) Spring retaining cap (3) Nut (4) Brake linings (5) Stud (6) Cotter pin
Verify that the brake moves freely on slide pins. Slide the brake so that one brake lining (4) is against the disc. Measure the clearance between the brake lining and the disc.
If the clearance between the brake lining and the disc is more than 2.54 mm (0.100 inch), adjust the parking brake to less than 2.54 mm (0.100 inch).
While hydraulics are applied, remove cotter pin (6) from the stud for parking brakes (5) and nut (3). Turn the nut until the nut is snug against spring retaining cap (2). Do not torque the nut.
Release the hydraulic pressure. Tighten the spring retaining cap for a distance of 1/4 turn with a spanner wrench in order to reduce the clearance by 0.38 mm (0.015 inch). In order to eliminate a chance of galling the threads, the spring retaining cap should never be adjusted with a load on the threads for the cap.
Verify that the clearance between the brake lining and the disc is less than 2.54 mm (0.100 inch). If more than a 2.54 mm (0.100 inch)gap exists, repeat 1/4 turn tightening adjustment in Step 6.
Apply hydraulic pressure and loosen nut (3). Reinstall cotter pin (6) in holes through stud (5) and nut (3) .