Author Topic: thermostat housing bolt torque?  (Read 3821 times)

merrill

  • Full Member
  • Platinum
  • ******
  • USA, TX, Austin
  • Posts: 1370
thermostat housing bolt torque?
« on: November 07, 2006, 13:12:31 »
Hello all,
what is thermostat housing bolt torque?

thanks
matt

Matt
66 230 sl - "white"
78 300 D - Blue
98 C230
Matt
Austin Tx
66 230 sl - "white"
78 300 D - Blue
98 C230

ja17

  • Full Member
  • Platinum
  • ******
  • USA, OH, Blacklick
  • Posts: 7414
Re: thermostat housing bolt torque?
« Reply #1 on: November 07, 2006, 18:11:01 »
Hello Matt,

You probably will not find this listed. It is not critical, standard metric hardware grade 8.8, I believe. It doesn't take a lot of torque to seal the rubber o ring here. Just be careful not to break them off. Use a generic metric hardware torque table if you are not comfortable with the "feel technique".

Joe Alexander
Blacklick, Ohio
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

ja17

  • Full Member
  • Platinum
  • ******
  • USA, OH, Blacklick
  • Posts: 7414
Re: thermostat housing bolt torque?
« Reply #2 on: November 07, 2006, 20:28:25 »
Hello Matt,

Here is a chart for standard SAE and Metric hardware.  

http://www.dansmc.com/torque_chart.htm

 Remember your bolt size is actually the diameter or the bolt shaft not the head size! The 10mm head bolt you are dealing with is actually a 6mm bolt size.

Joe Alexander
Blacklick, Ohio
« Last Edit: November 07, 2006, 20:29:06 by ja17 »
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

merrill

  • Full Member
  • Platinum
  • ******
  • USA, TX, Austin
  • Posts: 1370
Re: thermostat housing bolt torque?
« Reply #3 on: November 08, 2006, 07:56:19 »
Joe,
I am looking for the torque to mount the housing to the case not the top of the housing when replacing the thermostat.

I tightened it up to what "felt" snug.  Just want to avoid any leaks.

thanks
matt

Matt
66 230 sl - "white"
78 300 D - Blue
98 C230
Matt
Austin Tx
66 230 sl - "white"
78 300 D - Blue
98 C230