Thermostat isn't opening, what to replace?

[GaryR]

Oil temps is getting hot even though ambient is low and front oil lines to front/center cooler are cold. I see the housing but not sure what needs to be replaced as my manual just shows a pressure relief assembly in there. Any DIY's on it somewhere?

Thanks!

[Steve@Rennsport]

Gary:

If the fender-mounted thermostat is not opening, you should replace the guts of the thermostat;# 930.107.155.00.

You'll need to clean it all off very thoroughly and then carefully open it up. Patience is rewarded, here.

[GaryR]

Thanks Steve, I found a Tech article over on Rennlist and just ordered the insert from Wayne.. should be here in time for next weekend!

[Eric Coffey]

Assumng you have narrowed it down to the external t-stat, you will need the following:

Regulator (930.107.155.00)
Ring seal (900.123.136.30)

The regulator is under the big round threaded cap on the side. You can replace the pressure spring/seal as well (under smaller cap on bottom) "while you're in there" but the problem should be cured with a new regulator.

The pressure spring is PN: 900.280.008.00.
The ring seal is PN: 900.123.075.30.



EDIT: Dang, I knew I left that "reply" window open too long. Good work Steve!

[GaryR]

Thank you Eric, all set now... will report back on the completion and results.

[ninesixfour]

Are those part numbers for Gary's 930 or the SC or are they the same?

[Eric Coffey]

same