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AIREND REBUILDING PROCEDURE
Once the airend is received it is unloaded and taken immediately to the disassembly area, which
contains a mounting stand, overhead crane and oil pit for collecting waste oil. The job is then
assigned a work order number, and a job folder is generated to hold all documents related to
disassembly, teardown and dimensional specs. This folder follows the airend through the entire
rebuilding process to ensure accurate documentation from start to finish.
Once the airend is disassembled, all components are checked for wear & all measurements are
recorded. Pictures are taken identifying the problem areas.
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The disassembled airend is then placed in one of our selfcontained
cleaning systems. After the
airend is completely cleaned & degreased, all parts that require work are brought to different areas of
the shop and the repairs begin.
If necessary, the following repairs will be made:
1) The front and rear covers can be metalized using the thermal ARC system & then machined by the
Blanchard grinder.
2) The rotors can be mounted and turned on a lathe. Bearing journals can be metalized and ground
according to specs.
3) The main bore area can plated and bored on a vertical boring mill.
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4) Seal strips can be built up and recut
on our custom jig.
Depending on the extent of the damage, the above work normally takes 1 to 2 days to complete.
All components are then rewashed and taken to the assembly area, where all the bearings, seals,
gaskets, and related materials needed to complete the assembly are pulled from inventory.
Before assembly takes place all the dimensions are rechecked including the bearing pockets, bores,
and alignments. Both rotors are then checked for proper balance and alignment. The new bearings
are measured for proper fit before installing.
The airend is then completely reassembled. After assembly the airend is spun unloaded for a final
check. To insure that the manufacturers specs are being met, the unit is continually measured and rechecked
for accuracy during the entire rebuilding process.
Upon completion, all open ports are plugged with plastic caps and the inlet is sealed shut. The airend
is now ready to be skid mounted and painted the original O.E.M. color.
As units enter the shipping area, all necessary shipping documents and startup
procedures are
attached to the unit, and trucking details are arranged.
This whole process normally takes 5 to 7 working days, depending on the size of the airend and the
degree of damage. We have setup our shop so the work flows through on an orderly path to insure
that all our inspection steps and quality controls are adhered to.
All rebuilds are backed by our standard oneyear,
8,000 hour warranty or our extended twoyear,
16,000 hour warranty. See the airend warranty sheet for details.
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