Changing Oil
Change the oil in the air compressor pump after the initial 50 hours, or 30 days of use; and every 300 hours, or 3 months after the first oil change. Use any quality air compressor oil.
To change the oil:
1.DISCONNECT THE COMPRESSOR FROM POWER, AND DRAIN ALL AIR FROM THE TANK.
2.Place a container to catch the oil under the oil sight glass.
Hot crankcase oil can scald your hands or fingers. Before draining the oil, allow the compressor to cool 15 minutes before removing the drain plug.
3.Using a 19mm wrench, remove the drain plug shown in Figure 18.
Oil Fill Cap
Drain Plug
Figure 18. Drain plug and oil fill cap.
4.Tip the compressor to drain all of the oil from the crankcase.
5.Reinstall the drain plug, and remove the oil fill cap shown in Figure 18.
6.Fill the crankcase with oil until the oil level is in the center of the sight glass, then replace the oil fill cap.
NOTICE
The oil fill cap releases crankcase pressure through a small hole in the top of the cap. Keep this hole unclogged, or the crankcase may pressurize, causing seals and gas- kets to leak leading to compressor bearing failure.
Check Valve
The diaphragm and seal in the check valve can become damaged, twisted, or dirty and cause the valve to leak or prevent the compressor from building air.
To fix the check valve:
1.DISCONNECT THE COMPRESSOR FROM POWER, AND DRAIN ALL AIR FROM THE TANK.
2.Using a 19mm wrench remove the cap shown in Figure 19 from the check valve.
Cap |
Check Valve Assembly |
Figure 19. Check valve assembly.
Model T21888 (Mfg. since 2/10) |