We can only speak for Tempest overhauled pumps as we have no control over the quality of other overhaul shops. Before Tempest®/Aero Accessories, LLC offered an overhauled pump, they spent more than a year in research and testing to determine what was required to produce a quality overhauled pump that would last as long as a new pump producing the vacuum or pressure required for aircraft application. In 1984 Tempest®/Aero Accessories, LLC had its overhaul process specification approved by the FAA and began offering quality overhauled vacuum pumps to general aviation. Tempest takes great pride in their state of the art overhaul facility, and produce the best overhauled pump on the market today. Over the years they have acquired FAA-PMA’s for all component parts of the Dry Air Pumps, and have supplied replacement parts to all overhaulers worldwide.
Yes, using a cooling shroud whether on a 200 series or 400 series dry air pump can reduce pump temperatures by as much as 10%. For more information, go to Vacuum Pump Cooling Kit.
The carbon vanes inside the pump are sticking in rotor slots. Oil or solvent has entered the pump either from a bad oil seal in the engine case at the pump mounting area, or from pressure washing the engine with an oil-based solvent (spraying directly on the pump). The oil or solvent will work its way up into the pump through the drive end, mixing with graphite dust and turning into a paste like material.
A Dry Air Pump is just that: DRY. As the carbon rotor and vanes wear, they produce graphite dust which lubricates moving internal parts of the pump. When oil or solvent mixes with this graphite dust, it keeps vanes from moving freely in their slots and they stick. At low engine RPM, the vanes are recessed in their slots and create no vacuum, but as engine RPM increases, centrifugal force slings the vanes out, allowing them to grab air and create vacuum. Once a pump has become contaminated, its life expectancy is extremely short. The cause of pump contamination should be determined and corrected and the pump should be replaced as soon as possible.
Tempest Dry Air Vacuum Pumps
Tempest offers a complete line of new and overhauled FAA-PMA approved dry air pumps.
All new and overhauled Tempest dry air pumps come with patented WIP™ (Wear Indicator Port) that allows for internal observation of the pump’s vanes. The WIP™ helps determine if the pump should be replaced and avoid unscheduled maintenance due to a pump exceeding its life cycle. They also include finned stators for increased cooling and an “ultra-hard” finish on the internal wear surfaces of the stator for low friction and extended life.
New Tempest dry air pumps offer a closed coupling area and patented “LRT” diverter. These design features will help you detect and prevent pump contamination from external sources.
The 240 and 400 series dry air pumps are rugged, light-weight, and designed with today’s high-performance aircraft in mind. These pumps use a heat-treated, stainless-steel conical pressure plate spring and torsional dampening springs to provide a harmonics-free pressure plate control and smooth temperature compensation. The larger pumps also use hardened stainless-steel pressure plates that are precision ground and lapped to reduce internal leakage and wear.
For these reasons and more, Tempest is the preferred dry air pump of aviation maintenance technicians worldwide.
Always have the right tool for the job!
Vacuum Pump Wrenches
Finally a vacuum pump wrench that actually works and does not break!
A different wrench for the two sizes of pumps (one wrench can't do both pumps well)
P/N TOOL133 - 3.72" length, use for small pumps
P/N TOOL133-L - 4.83" length, use for large pumps
New Pumps Each pump is meticulously and professionally hand assembled to insure proper tolerances and clearances. This assures optimum performance. After assembly, each pump is functionally tested. After this initial testing, the pump is disassembled, inspected for any unusual wear or abnormalities, and reassembled for a second test run. This extensivetesting procedure assures that only first-class products leave the facility. Overhauled Pumps When Tempest receives a core, it is disassembled and all carbon is discarded. Tempest never re-uses carbon. A new stator is used on all 200 series pumps. The larger 400 series pumps have the hard anodize stripped from the center stator and the stator is inspected for cracks. Then the I.D. is reconditioned. After the reconditioning process, each 400 series stator is meticulously inspected for proper dimensions. The stator then receives a new hard anodize coating. All re-used parts are inspected in the overhaul process to make sure that each part meets the FAA-PMA approved requirements process specification 203-6-1009. |
OUR PARTS ARE ENGINEERED TO LAST LONGER WHILE SOLVING KNOWN SAFETY ISSUES
OVER 40,000 PARTS IN STOCK WITH SAME DAY SHIPPING IF ORDERED BY 3PM
OUR TEAM PROVIDES THE OLD-FASHIONED CUSTOMER SERVICE THAT YOU EXPECT