SWIVEL GP 4262649 - Caterpillar

Illustration 1 g01272580
Remove filler cap (1) in order to prevent a vacuum in the tank. Install the cap after the tank has been drained. This will prevent dirt from entering the system.
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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Note: Hand tighten the NPT pipe nipple. Do not use tools.
Remove drain plug (3) from the hoist/brake tank. Install a 88 mm (3.50 inch) long NPT pipe nipple in order to open the internal drain valve. The outer diameter of the NPT pipe nipple should be 25.4 mm (1 inch). Drain the oil into a suitable container.
Remove the pipe nipple. Clean the drain plug and install the drain plug.
Remove the tank filler cap.
Remove the retaining ring on the filler screen. Remove the screen.
Wash the cap and the filler screen in clean, nonflammable solvent. Allow the cap and the filler screen to dry.
Inspect the cap seal. Use a new seal if the used seal is damaged. Install the filler screen and the retaining ring.
Fill the hoist/brake tank. Refer to Operation and Maintenance Manual, "Lubricant Viscosities". Refer to Operation and Maintenance Manual, "Capacities (Refill)".
Start the engine and run the engine for approximately 15 seconds. The oil level will decrease as oil fills the system.
Stop the engine.
Add oil to the tank in order to raise the oil to the proper level in upper sight gauge (2) . Refer to Operation and Maintenance Manual, "Hoist and Brake Tank Oil Level - Check" for the proper oil level within the sight gauge.
Start the engine and operate the engine at low idle. Check the hydraulic system for leaks and make necessary repairs.
Raise the dump body until the hoist cylinders are extended halfway. Lower the dump body and add oil, if necessary.
Raise the dump body until the hoist cylinders are fully extended. Lower the dump body and add oil, if necessary.
Repeat Step 14 and Step 15 until the proper oil level stabilizes in the upper sight gauge. Install the filler cap.