Freeing Up a Seized Aluminum Detroit Blower?

[Patrick Presti]

Hey Guys,

Any recommendations on penetrating oils for freeing up seized aluminum parts? I acquired a blower for a 4-53 Detroit where the previous took the blower off of the motor but didn’t do anything with it. He said the motor was sitting around for 20 years. Before taking the blower apart, I would like to try to free it up first. Any input would be greatly appreciated.

Thanks,

Pat

Topic

[Patrick Presti]

Freed Up.

I freed it up.  I stuck it in a bucket of diesel for a couple of months.  I eventually was able to start rocking it back and forth until it started spinning freely.

[Clark Leighs]

What is seized, the end plate bolts or the rotor bearings?
THe bolts should be dosed with a penetrant such as Kroil. THere are others but Kroil seems to be very good.
A user mix could be 1/2 ATF and 1/2 Acetone. Reportedly works very well.

Then using a drift between the bolts and a hammer use shock to hopefully vibrate them so the penetrant will travel the threads. Maybe some heat also but just be carefull as penetrants are flammable.

As for the bearings spray again and a puller along with the above.

[Author]

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