# 230 flat head no compression after way long sleep...Cause?

**URL:** <https://59plymouth.net/t/230-flat-head-no-compression-after-way-long-sleep-cause/2225>\
**Category:** Tech Support\
**Created:** [March 4, 2013, 1:08am UTC](https://59plymouth.net/t/230-flat-head-no-compression-after-way-long-sleep-cause/2225 "2013-03-04T01:08:52Z")\
**Posts on this page:** 1\
**Showing post:** 34

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**Author:** ![Denver\_59\_Fin\_Conver](https://59plymouth.net/user_avatar/59plymouth.net/denver_59_fin_conver/32/24_2.png) [@Denver\_59\_Fin\_Conver](https://59plymouth.net/u/Denver_59_Fin_Conver)\
**Post date:** [April 4, 2013, 2:21am UTC](https://59plymouth.net/t/230-flat-head-no-compression-after-way-long-sleep-cause/2225/34 "2013-04-04T02:21:20Z")

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> [@sallysavoy](#):
>
> Hi John, No unfotunately i didn’t think i needed to do that, are they behind the rear brake assembly? I did inspect those seals and they appeared to be sealing ok.Does anyone know of a source for a vacuum advance for the flat head 6 and a replacement clutch pressure plate and throughout bearing.  
> Thanks  
> Mark Hoyt  
> Reading Penna.

Yes, the seals are just inboard of the tube behind the brake shield. Take a look at my posting on my rest and you can see where the inner seals are located. Just would have been easy to do if you had the half axles out as a preventive service. Hopefully this link will go to page 6 of my travels.. [contacted SF owner in MN.](http://59plymouth.net/t/contacted-sf-owner-in-mn/127/1)  
  
  
John Q.

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