Author Topic: Need M400 Cruise Control Diaphragm  (Read 77 times)

Offline lip

  • 8 year member
  • *
  • Posts: 12
  • Member since: 2011
  • I own: a Motor Home
  • Year: 1976
  • Make: Winnebago
  • Model: Brave D26
  • Chassis: Dodge M400
  • Engine: 440-3
Need M400 Cruise Control Diaphragm
« on: June 29, 2020, 05:40 AM »
Hi Guys,
I hope you are all well!
As my cruise control didnt work on my last trip- i found out that the diaphragm has a whole in the rubber and vacuum can't be hold anymore.
Can anybody give me a hint where I can get a new one? If yes, maybe a part number?
Thanks for your help.
Best regards from Germany,
Lloyd

Offline Elandan2

  • 18 Year Member
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  • Posts: 468
  • Member since: 2001
  • I own: a Motor Home
  • Year: 1977
  • Make: Winnebago
  • Model: Elandan II D27DRK
  • Chassis: Dodge M500
  • Engine: 440
Re: Need M400 Cruise Control Diaphragm
« Reply #1 on: June 29, 2020, 06:45 AM »
I replaced mine with one for a Land Rover I believe. After looking through the pictures of the ones available, I picked one that looked as if it would mount to the original bracket with a similar arm. In my case, I had to bend the end of the arm 90°. After installing it and adjusting the linkage, the cruise control works like new. This is the one I used. 


https://www.carid.com/genuine/cruise-control-actuator-mpn-w0133-1608280-oes.html


Treatzall Waste tank sanitizer, lighting, and other RV related products!
Rick Ellerbeck, 1977 Elandan II

Offline lip

  • 8 year member
  • *
  • Posts: 12
  • Member since: 2011
  • I own: a Motor Home
  • Year: 1976
  • Make: Winnebago
  • Model: Brave D26
  • Chassis: Dodge M400
  • Engine: 440-3
Re: Need M400 Cruise Control Diaphragm
« Reply #2 on: June 29, 2020, 10:13 AM »
Thank you very much! I will start researching what is available here...

Offline lip

  • 8 year member
  • *
  • Posts: 12
  • Member since: 2011
  • I own: a Motor Home
  • Year: 1976
  • Make: Winnebago
  • Model: Brave D26
  • Chassis: Dodge M400
  • Engine: 440-3
Re: Need M400 Cruise Control Diaphragm
« Reply #3 on: July 03, 2020, 02:40 PM »
Hi Guys,


I bought this vacuum diaphragm from a Volvo car - which was cheaper and easier to get here in Germany:
https://www.skandix.de/de/fahrzeug-teile/motor/kraftstoffaufbereitung/einspritzanlage/drosselklappe/unterdruckdose-tempomat/1010773/
I will have to change the rod in the front but I think it should work.


Best,
Lloyd