HOSE 3327785 - 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 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.
Identify all hydraulic lines as they are removed for reinstallation purposes. Cap and plug all lines and fittings to prevent any contaminants from entering the system.1. Release the pressure in the hydraulic system by slowly loosening the fill cap located on the top of the hydraulic oil tank.2. Drain the hydraulic oil from the hydraulic oil tank into a suitable container. The capacity of the hydraulic oil tank is 72 liters (19 U.S. gal). 3. Open the engine access door on the right side of the machine.4. Disconnect hose assemblies (1) and (5) from steering pump (4). Cap and plug immediately.5. Remove bolt (2) and five bolts (3), and remove steering pump (4) and the gasket from the engine. For installation of the steering pump, reverse the removal steps. After the steering pump has been installed, fill the fill the hydraulic oil tank to the correct level. See the Operation & Maintenance Manual Form No. KEBU6859, for the correct filling procedure.Disassemble & Assemble Steering Pump
Start By:a. remove steering pump 1. Remove nut (22), gear (20), and woodruff key (21) from drive gear (11). When assembling the steering pump tighten nut (22) to a torque of 50 to 54 N m (37 to 40 lb ft).2. Remove four bolts (14), and remove end cap (6) from housing (10).3. Remove plug (1), spring (4) and priority valve (5) from end cap (6). Remove O-ring seal (3) from plug (1). Check the O-ring seal for damage or wear and replace if necessary.4. Remove flange (15) from housing (10).5. Remove retaining ring (17), and remove lip-type seal (16) from flange (15). Check the lip-type seal for damage or wear and replace if necessary.6. Remove back-up seals (8) and seals (18) from both sides of housing (10).7. Remove drive gear (11), driven gear (19) and bushings (9) and (12) from housing (10).8. Remove O-ring seals (7) and (13) from each side of the housing. Check the O-ring seals for damage or wear and replace if necessary.9. If necessary, remove the two dowels from each side of