PISTON 2705949 - Caterpillar

Removal Procedure
Start By:
Remove the hydraulic tank and filter. Refer to Disassembly and Assembly, "Hydraulic Tank and Filter- Remove".
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.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Connect the steering frame lock. Refer to Operation and Maintenance Manual, "Steering Frame Lock".
Drain the hydraulic system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Capacities - Refill" for the capacity of the hydraulic tank. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".
Illustration 1 g03682860
Disconnect hose assemblies (4) and (5). Disconnect tube assembly (2) .
Remove bolts (3) in order to remove piston pump (1) from the machine. The weight of piston pump (1) is approximately 18 kg (40 lb).