Grizzly T21888 Fixing Air Leaks, To find air leaks, To fix air leaking around fitting threads

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3.Inspect the seal ring and diaphragm (Figure 20) for damage and dirt.

Diaphragm

Seal

Ring

Figure 20. Check valve assembly.

4.Replace any damaged parts and clean any dirt off of the diaphragm and seal ring.

5.Re-assemble the check valve. Do not add thread sealant or Teflon tape to the cap threads, as the seal ring is the seal.

6.Make sure the diaphragm presses squarely against the air supply tube opening.

Fixing Air Leaks

To find air leaks:

1.Allow the compressor to build air pres- sure to the rated pressure.

2.DISCONNECT THE COMPRESSOR FROM POWER.

3.Listen for the sound of air to find fittings that may be leaking.

4.Spray the suspected air leak with a soap and water solution. If you see air bubbles, you have found your leak.

To fix air leaking around fitting threads:

1.DISCONNECT THE COMPRESSOR FROM POWER, AND DRAIN ALL AIR FROM THE TANK.

2.Unscrew the fitting that is leaking.

3.Clean and apply Teflon tape or liquid thread sealant to the fitting threads.

4.Clean and chase the threads with the appropriate thread tap.

5.Re-install the fitting to the compressor.

Model T21888 (Mfg. since 2/10)

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Contents Gallon Compressor Page Table of Contents Introduction Foreword SpecificationsTion about proper operation of the equipment Maintain Safety GUARDS. YourRead this MANUAL. This tool may Wear a RESPIRATOR. This toolUSE Correct AIR Pressure Additional Safety Instructions For Air Compressors 110V Operation Circuit RequirementsGrounding Assembly SET UPPlacement UnpackingTo test run and break in the air com- pressor Test Run BreakPressure Relief Valve Test on Changing Oil onOperations Pressure Regulator UseTo control the air supply to your tool To use your air compressor OperationAccessories G6261-Campbell Hausfeld Water FilterH7274-Campbell Hausfeld Pressure Regulator Maintenance ScheduleDaily before use, perform the following checks Draining Tank Pressure Relief Valve TestTo drain water from the tank Service TroubleshootingSymptom Possible Cause Possible Solution Model T21888 Mfg. since 2/10 Model T21888 Mfg. since 2/10 Check Valve Changing OilTo change the oil To fix the check valveFixing Air Leaks To find air leaksTo fix air leaking around fitting threads To adjust the pressure switch Pressure SwitchStorage When storing your air compressor, fol- low these guidelinesParts Breakdown Description Parts ListWarranty Warranty Card Name Street CityStateZip Place Stamp Here