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GTCP85-180L 3842360-1


aRMer9
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**The message below was sent to me from one of our departments, any help will b e appreciated...**

3842360-1

In the end of the assembly our Engineering detected that to install this material we need a Torsion Shaft (we don't know the PN).

The assembly was made in accordance with the attached document: "Wheel and Shaft Assembly (Shaft Repair) due to damage or abnormal wear to internal spline area of shaft":

"Install plug to depth shown. Identify wheel and shaft assembly by adding (-789) below the part number etched on the shaft.

NOTE: It will be necessary to use a shortened torsion shaft in place of existing shaft at final assembly on the engine if the preceding repair has been performed

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Hi,

Unfortunately, Honeywell does not produce a "short shaft" to allow use of the -789 repair in APU types with a planetary style gearbox. This repair is used widely in commercial units that incorporate a flat gearbox, not the crossways style on the 180L/185L APU. Your options at this point are:

Relpace the turbine wheel with a unit that does not have a plugged shaft (-789)

Re-shaft the wheel to restore the spline wear.

Remove the plug from the wheel and re-evaluate the wear in the splines.

Sorry there is not better news, most of us learned this lesson the hard way..had the compressor / turbine built only to find out the gearbox would not seat onto the assembly.

Lastly, I have 3842360's in stock without the plugged repair.

Regards,

Tom Timmermann

Avon Aero Supply Inc

[email protected]

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