GAST | 8R1110-201-1048

Most likely foreign material has gotten under one of the valves holding it open, causing low flow.

None, these models are oilless, and do not require oil.

No, none of Gast models are able to pump explosive gases.

ROC-R models will not restart under any load, the head must be unloaded for proper restart.

Gast recommends using Gast flushing solvent AH255D, if this is not available you can use electrical contact cleaner.

These are shims to protect the retainer plate from hitting the vale plate, if removed, they must be reassembled the same way they came off. If one is lost it must be replaced to assure proper clearances.

Yes the brushes can be obtained from your nearest Gast distributor, look on our web site and click on sales & distribution.

The motor can not be replaced in the field, the unit should be sent to a rebuild center.

The rod assembly is replaceable, refer to your owners manual for part numbers.

Preventative Maintenance (PM) kits should be installed every 2000 hours or 2 years, whichever comes first. Additionally, if fitted with Sound Shield, the AS321 Silencers should be replaced during the same interval period.

If properly fitted and operated under normal conditions of use, the remainder of the factory warranty will continue with Sound Shield installed.

For an explanation of the Rocking Piston model numbers please click here. LEARN MORE