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04-16-2017, 01:12 PM
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#1
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Junior Member
Join Date: Oct 2011
Posts: 21
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Park brake switch is sometimes preventing me from leveling
Hi, my name is ''G'' and we have an´06 Monaco Diplomat and our park brake switch is sometimes preventing me from leveling. I took it out and the number is Nason SM-IC-66R/WP28, but I´m told that other motorhomes of our same brand have Nason SM-2B-85R, I´m having trouble finding one, can you tell me if I can buy any other switch number/brand to replace this one ?
Thanks Gudjon,, ''G''
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04-16-2017, 02:12 PM
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#2
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Senior Member
Join Date: Sep 2016
Location: Sarasota, FL
Posts: 5,228
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Here is a google search - I searched without Nason in the search
https://www.google.com/search?q=SM-I...utf-8&oe=utf-8
__________________
Rick and Larrie Dee
1997 40' Newmar London Aire DP CTA 8.3 (Mechanical) 325 Spartan MM
Bringing her back to her glory.
'08 Jeep GC Overland.
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04-16-2017, 02:14 PM
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#3
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,771
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Hi G! Please explain how the park brake switch would keep you from leveling?
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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04-16-2017, 02:31 PM
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#4
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Junior Member
Join Date: Oct 2011
Posts: 21
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Joe & Annette, Thanks for your reply, when I turn on the leveling board the engage park brake light will blink and nothing will work until I have released and set the park brake many times and sometimes I have to start up and get the air pressure up. Yesterday I unplugged the switch and plugged it in again and all worked fine. Today I needed to turn the motorhome on and the jacks came up so we had to relevel.
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04-16-2017, 03:17 PM
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#5
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,771
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Yup, it sounds like it's either a bad connection on the switch or it's defective. I would try plugging and unplugging the wires or wiring harness on the switch several times. Sometimes connections can oxidize and get what we term a "high-resistance" connection. Plugging and unplugging can clean the connections and get it to working again.
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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04-16-2017, 08:23 PM
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#6
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Senior Member
Monaco Owners Club
Join Date: Jun 2011
Location: CA
Posts: 4,476
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Quote:
Originally Posted by trigud
Hi, my name is ''G'' and we have an´06 Monaco Diplomat and our park brake switch is sometimes preventing me from leveling. I took it out and the number is Nason SM-IC-66R/WP28, but I´m told that other motorhomes of our same brand have Nason SM-2B-85R, I´m having trouble finding one, can you tell me if I can buy any other switch number/brand to replace this one ?
Thanks Gudjon,, ''G''
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I have a Windsor and I know the Sm-1C-66r/WP28 is correct for mine, at least. I just purchased one from Monaco parts.
If your switch has that same # on it, you'll be fine.
__________________
Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV or 2012 Jeep
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04-18-2017, 03:20 AM
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#7
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Senior Member
Monaco Owners Club
Join Date: Mar 2011
Posts: 889
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Short term you can wire a manual override switch across the contacts of the pressure switch. Close the switch to complete the circuit to simulate the parking brake being on.
I just did this to allow me to manually control the air leveling to get up my driveway.
Paul
__________________
Paul Whittle
2005 Monaco Signature 45'
525 HP/1850 Ft Lb ISX-15/6-Speed Allison 4000
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04-18-2017, 10:31 PM
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#8
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Junior Member
Join Date: Oct 2011
Posts: 21
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I found place who sells the switch to Monaco,
Steve Johnson
Isaacs Fluid Power
7127 Homestead Road
Suite G
Fort Wayne, IN 46814
Cell: 260-705-8999
Office: 877-471-8999
Fax: 260-471-6888
''G''
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04-19-2017, 09:45 AM
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#9
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,771
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Quote:
Originally Posted by trigud
I found place who sells the switch to Monaco,
Steve Johnson
Isaacs Fluid Power
7127 Homestead Road
Suite G
Fort Wayne, IN 46814
Cell: 260-705-8999
Office: 877-471-8999
Fax: 260-471-6888
''G''
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Thanks for the info G!
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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04-20-2017, 06:19 AM
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#10
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Senior Member
Monaco Owners Club
Join Date: Jan 2003
Location: Knoxville, TN, USA
Posts: 3,998
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Quote:
Originally Posted by trigud
Hi, my name is ''G'' and we have an´06 Monaco Diplomat and our park brake switch is sometimes preventing me from leveling. I took it out and the number is Nason SM-IC-66R/WP28, but I´m told that other motorhomes of our same brand have Nason SM-2B-85R, I´m having trouble finding one, can you tell me if I can buy any other switch number/brand to replace this one ?
Thanks Gudjon,, ''G''
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Gudjon,
We also own a 2006 Diplomat and became frustrated with the short life of the parking brake switch. We did an investigation of the circuit and wrote a white paper on how the system works, what is happening and a more reliable substitution for the Nason switch. We are almost three years on our substitute switch now and have not had one problem. Here is the white paper if you are interested.
Bob
__________________
Bob and Pam
2022 Quantum JM31
2023 Colorado Z71
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11-18-2018, 12:41 PM
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#11
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Junior Member
Join Date: Nov 2018
Posts: 1
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Thanks for the white paper - it worked for me (regarding park signal for leveler). I couldn't find the Cole-Palmer switch (out of production), but found a Freightliner FSC-1749-1907 (70 psi, NO, SPST, 1/8" MNTP) on ebay for about $8. Also a box of 6 relays with harnesses for $12 on Amazon.
Just thought I'd share the update.
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11-19-2018, 05:17 AM
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#12
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Senior Member
Monaco Owners Club
Join Date: Jan 2003
Location: Knoxville, TN, USA
Posts: 3,998
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Quote:
Originally Posted by henry82
Thanks for the white paper - it worked for me (regarding park signal for leveler). I couldn't find the Cole-Palmer switch (out of production), but found a Freightliner FSC-1749-1907 (70 psi, NO, SPST, 1/8" MNTP) on ebay for about $8. Also a box of 6 relays with harnesses for $12 on Amazon.
Just thought I'd share the update.
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Henry,
Glad you found the paper helpful and were able to find a substitute pressure switch.
Bob
__________________
Bob and Pam
2022 Quantum JM31
2023 Colorado Z71
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