fhf 909 running slow

[JONICURN]

FHF 909 in vintage Lucien Piccard is showing average  +10 sec per day, beat error 0.5 and 210 amplitude in six postions.   Seconds hand is circulating at correct speed.   The problem is the minute and hour hands are drastically slow and often stop.  This is all after I serviced.  Thought it might be binding but the movement never stops or slows.. just the two hands.   The watch sets and winds with ease.    Not sure what could be causing this.  I'm confused...

[Nucejoe]

Sounds like loose canon pinion.

 

[nickelsilver]

Sounds like you don't have friction at the canon pinion.

[Nucejoe]

Use a nipper to tighthen.

http://lsyf.com/repairing-zodiac-offset-cannon-pinion/

[Nucejoe]

The link sbiws how to on zodiac which got an offset canon pinion. 

Tighthening is the same.

 

[JONICURN]

Loose canon pinion theory is definitely a strong possibility.  I will tighten and let you guys know.  Thanks so much

Edited March 19, 2019 by JONICURN

[JONICURN]

Tightened the canon pinion and now the watch is working perfectly.  Thank you all so much!

[Aviawatchfan]

Hello, I have the same movement, but the opposite problem, running way too fast, gains 2 hours in 12. Any help you can give me? [email protected]

[Marc]

Are any of the hair spring coils sticking together or touching, or touching the underside of the balance bridge, or fouling the balance wheel arms?

If so then you either have a contaminated or magnetised hair spring (coils sticking together) or a distorted one.

Any of the above will cause the rate to be too fast.

[Nucejoe]

A close up of the hairspring helps further narrow down the diagnosis.