Howard Miller (Kieninger), AEL 01 #354-578 (advice please)

digitalblsphemy

Registered User
Dec 15, 2020
142
10
18
73
Country
This HM 354-578 movement came in today. It's AEL 01 series. It has a platform escapement that appears to be DOA. I've never seen this before . It looks like a Denali version of the standard Hermle 340-020. I read somewhere that these escapements are prone to failure?
Shame it's a beautiful movement. Chime side is in perfect working order. Time side on vacation somewhere, nothing.
I have to power down all 3 springs first to really see what's what but I think it's the escapement itself.
any experience out there with these, I would love to hear it.

20220718_114651.jpg 20220718_114816.jpg
 

Willie X

Registered User
Feb 9, 2008
17,149
3,002
113
Yes ... the plastic parts in that little platform crapp out at around 15 years and the platform has to be replaced. Mark B says that this platform had been improved.

The large extended pinions in the chime train will wear out at about 25 years and have to be re-bushed (usually 3 places, using #4 KWM) bushings.

Most of my customers opt for a new battery chimer, or time only movement, for a fraction of the cost. I can't say that I blame them.

Willie X
 

MARK A. BUTTERWORTH

NAWCC Life Member
NAWCC Member
Jul 4, 2009
2,640
243
63
Muscatine, Iowa 52761
Country
Region
The new movements have a platform made with DuPont Delrin, which is an industrial synthetic and is 10x harder than the original escapement. Butterworth has the new movements.
Some repairpersons ruin the escapement by trying to lubricating it with oil. The proper lubricant is a special one from Etsyntha.
Some folks have asked why the movements didn’t come with a Swiss 11j escapement. The answer is that that escapement costs more Than the entire movement.
 

digitalblsphemy

Registered User
Dec 15, 2020
142
10
18
73
Country
Thanks for the reply Willie & Mark. I kind of figured that's what it was. Shame, beautiful movement otherwise.
I wasn't aware of your company Mark, I'll have to email you for that company Login setup.
I'm curious what a replacement would cost. Movement is too nice to just toss.
 

digitalblsphemy

Registered User
Dec 15, 2020
142
10
18
73
Country
This is just an update. I just couldn't shelve this nice little unit. I found a 2022 mfg. version. So long story sort, after I let all the power down, I replaced the escapement platform. After a little winding power to the trains, it just ran. Even horizontally, but that's the nature of these much like a ships bell clock.
Pricey yes, but I just couldn't shelve it!
BTW, How do you release the power with these double click springs? There must be an easier way. Major PIA
 

Forum statistics

Threads
176,402
Messages
1,544,016
Members
53,286
Latest member
ferkor
Encyclopedia Pages
1,064
Total wiki contributions
3,031
Last update
-