MOTOR GP-PISTON 1739253 - Caterpillar

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, "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.
Move the machine to a smooth, horizontal location. Move the machine away from other operating machines and away from personnel.
Start the engine, and raise the work tool slightly.
Engage the parking brake, and select third speed on the transmission direction and speed control lever. Do not apply the service brakes.
Quickly shift the transmission direction and speed control lever to the FORWARD position, back to the NEUTRAL position and back to the FORWARD position. This procedure will bypass the neutralization of the transmission while the parking brake is engaged.
Gradually increase the engine speed to high idle. The machine should not move.
Reduce the engine speed. Move the direction control lever to NEUTRAL.
If the machine moved while testing the parking brake, inspect the parking brake components for wear or damage. Repair or replace the worn or damaged parking brake components as required before returning the machine to service.