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General Discussion of preventative/corrective maintenance and other technical issues regarding your coach that are not covered in other Mechanic's Corner categories (ex. refrigerators, water heaters, and compressors).

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  #31  
Old 06-15-2024
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Vonhitch Vonhitch is offline
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Default Clock outside air temp

So heres my internet sleuthing..

The clock is a national semi conductor MA1026 found that here
https://www.wanderlodgeownersgroup.c...8&d=1354125194

That gives a schematic how it works.

That led me to this archer which was radio shack which made the same part number clock display
https://www.ebay.com/itm/27593994566...mis&media=COPY



Then on that listing it gives an archer part number 276-1734 temp sensor

Which there appears to be alot of those on ebay. Ordered a couple.

Then I went and removed my sensor see pics looks the same to me but is has a 226R Resistor - RN55D2260F so ordered some of those.

Wish me luck. Im on a mission to repair all the old electronics call me crazy

Dave
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David Hitchinson
Auburn, Ca
1985 PT-40 RIBBITT

https://www.instagram.com/theribbitt?utm_source=qr

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  #32  
Old 06-15-2024
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tqwrench tqwrench is offline
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Quote:
Originally Posted by Vonhitch View Post
So heres my internet sleuthing..

The clock is a national semi conductor MA1026 found that here
https://www.wanderlodgeownersgroup.c...8&d=1354125194

That gives a schematic how it works.

That led me to this archer which was radio shack which made the same part number clock display
https://www.ebay.com/itm/27593994566...mis&media=COPY



Then on that listing it gives an archer part number 276-1734 temp sensor

Which there appears to be alot of those on ebay. Ordered a couple.

Then I went and removed my sensor see pics looks the same to me but is has a 226R Resistor - RN55D2260F so ordered some of those.

Wish me luck. Im on a mission to repair all the old electronics call me crazy

Dave
Thanks Dave. So where does the LM334Z go, in the outside temp sensor arrangement? Answered my own question on the eBay listing. Now I get it!
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  #33  
Old 4 Weeks Ago
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Vonhitch Vonhitch is offline
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Default Cruise air repair

Well My ac friend came over handed me a 20lb bottle of 22 refrigerant. We had left the system last week with a 100lbs of nitrogen. Well today it was flat again. We tossed some gas in it charged that up to 100 with nitrogen again. The brazed couplers we did were holding. So started with the sniffer and it was going off above the compressor right there I thought i had to pull the unit. But we turned the sensitivity down on the sniffer and we determined with soap it was the pressure switch on the high side as shown it pic#1. All we did was pull that loose and tightened the small fitting. Boom no more leak at least for now. We vacuumed that unit charged it with a little over 2 lbs. the front unit was a little low it had frozen over in florida so that took about 7oz. The rear unit we couldnt do anything with as the service valves are stuck but it always had a 20-22 degree split on supply air to return so Im leaving it alone. The front two units are both blowing about a 22 degree split if you sense the back of the duct its more but thats not reality. The temp in bus in 15 mins was great. Now I have about 17lbs of 22 for the future for fifty free. I didnt feel right about having him do this for free so I stuffed some hundreds in the console of his truck. I think next week Im finally going to get to yanking the trans out Oh I meant the gendernuetralshiftmodule. Lol
Thanks Dave
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David Hitchinson
Auburn, Ca
1985 PT-40 RIBBITT

https://www.instagram.com/theribbitt?utm_source=qr

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  #34  
Old 4 Weeks Ago
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Quote:
Originally Posted by Vonhitch View Post
Well My ac friend came over handed me a 20lb bottle of 22 refrigerant. We had left the system last week with a 100lbs of nitrogen. Well today it was flat again. We tossed some gas in it charged that up to 100 with nitrogen again. The brazed couplers we did were holding. So started with the sniffer and it was going off above the compressor right there I thought i had to pull the unit. But we turned the sensitivity down on the sniffer and we determined with soap it was the pressure switch on the high side as shown it pic#1. All we did was pull that loose and tightened the small fitting. Boom no more leak at least for now. We vacuumed that unit charged it with a little over 2 lbs. the front unit was a little low it had frozen over in florida so that took about 7oz. The rear unit we couldnt do anything with as the service valves are stuck but it always had a 20-22 degree split on supply air to return so Im leaving it alone. The front two units are both blowing about a 22 degree split if you sense the back of the duct its more but thats not reality. The temp in bus in 15 mins was great. Now I have about 17lbs of 22 for the future for fifty free. I didnt feel right about having him do this for free so I stuffed some hundreds in the console of his truck. I think next week Im finally going to get to yanking the trans out Oh I meant the gendernuetralshiftmodule. Lol
Thanks Dave
Spoken like a true Californian.
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  #35  
Old 4 Weeks Ago
StarChief StarChief is offline
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Quote:
Originally Posted by Vonhitch View Post
Well My ac friend came over handed me a 20lb bottle of 22 refrigerant. We had left the system last week with a 100lbs of nitrogen. Well today it was flat again. We tossed some gas in it charged that up to 100 with nitrogen again. The brazed couplers we did were holding. So started with the sniffer and it was going off above the compressor right there I thought i had to pull the unit. But we turned the sensitivity down on the sniffer and we determined with soap it was the pressure switch on the high side as shown it pic#1. All we did was pull that loose and tightened the small fitting. Boom no more leak at least for now. We vacuumed that unit charged it with a little over 2 lbs. the front unit was a little low it had frozen over in florida so that took about 7oz. The rear unit we couldnt do anything with as the service valves are stuck but it always had a 20-22 degree split on supply air to return so Im leaving it alone. The front two units are both blowing about a 22 degree split if you sense the back of the duct its more but thats not reality. The temp in bus in 15 mins was great. Now I have about 17lbs of 22 for the future for fifty free. I didnt feel right about having him do this for free so I stuffed some hundreds in the console of his truck. I think next week Im finally going to get to yanking the trans out Oh I meant the gendernuetralshiftmodule. Lol
Thanks Dave
Is that gonna be a quick turnaround on your genderneutralshiftmodule, or are you gonna be missing the Hood River Rally?
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  #36  
Old 4 Weeks Ago
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Vonhitch Vonhitch is offline
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Quote:
Originally Posted by StarChief View Post
Is that gonna be a quick turnaround on your genderneutralshiftmodule, or are you gonna be missing the Hood River Rally?
Unfortunately we will be missing the rally. Going to address the fact that all the fuel lines trans lines hydraulic hoses are old. The radiator is getting rodded ect. Im probably going to be off the road several months while I make it bigger project lol
Everything back there is original and needs attention so wise move is just take my time attend to everything I can in one shot
We will make it up there in the future
Thanks Dave
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David Hitchinson
Auburn, Ca
1985 PT-40 RIBBITT

https://www.instagram.com/theribbitt?utm_source=qr

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  #37  
Old 4 Weeks Ago
StarChief StarChief is offline
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Quote:
Originally Posted by Vonhitch View Post
Unfortunately we will be missing the rally. Going to address the fact that all the fuel lines trans lines hydraulic hoses are old. The radiator is getting rodded ect. Im probably going to be off the road several months while I make it bigger project lol
Everything back there is original and needs attention so wise move is just take my time attend to everything I can in one shot
We will make it up there in the future
Thanks Dave
Wise also, because the possibility of an Oregon fan either stealing Ribbit, or atleast them sticking a huge yellow “O” on the bus.
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  #38  
Old 3 Weeks Ago
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Vonhitch Vonhitch is offline
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Default Outside air temp/clock repair

Outside air temp repair

Well I may be only tackling little stuff right now but Im glad I did. I found a short and lets face it shorts cause fires. So I thought it was the outside air temp sensor that was the cause of the -40 degree reading. It wasnt it was the wire going behind the fridge had a short. When I was in there with a mirror all the zip ties were old dry and broken. One wire was on the tubes on the back of the fridge guess which one? Yup the outside temp sensor wire. Long story short I noticed it has a insulated pair silver and black and a single non insulated wire that is landed in the plug but doesnt land at the sensor. Continuity meter showed the clear insulated wire and the bare one were shorted to one another. I ripped that out and noticed immediately the wire insulation was melted and black. See pic #1. I had already pulled the insulation back btw. Pic #2 shows the non insulated wire that does nothing but was my short. Now was it burning on the tubes or this brings me back to the story of when the bus was on a dealer lot with no fridge. Either way it has a new fridge but they missed this wire condition. I replaced the sensor part number LM334 and the 126 ohm resistor added new wire adjusted the temp and now it works.
Ill say this anything electrical that doesnt work is getting attention. This is prime example of at least make sure the reason something doesnt work is not a short.

Dave
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David Hitchinson
Auburn, Ca
1985 PT-40 RIBBITT

https://www.instagram.com/theribbitt?utm_source=qr

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  #39  
Old 3 Weeks Ago
wandermore wandermore is offline
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Nice find, Dave! The little victories add up fast at the rate you are going.
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  #40  
Old 3 Weeks Ago
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Quote:
Originally Posted by Vonhitch View Post
Outside air temp repair

Well I may be only tackling little stuff right now but Im glad I did. I found a short and lets face it shorts cause fires. So I thought it was the outside air temp sensor that was the cause of the -40 degree reading. It wasnt it was the wire going behind the fridge had a short. When I was in there with a mirror all the zip ties were old dry and broken. One wire was on the tubes on the back of the fridge guess which one? Yup the outside temp sensor wire. Long story short I noticed it has a insulated pair silver and black and a single non insulated wire that is landed in the plug but doesnt land at the sensor. Continuity meter showed the clear insulated wire and the bare one were shorted to one another. I ripped that out and noticed immediately the wire insulation was melted and black. See pic #1. I had already pulled the insulation back btw. Pic #2 shows the non insulated wire that does nothing but was my short. Now was it burning on the tubes or this brings me back to the story of when the bus was on a dealer lot with no fridge. Either way it has a new fridge but they missed this wire condition. I replaced the sensor part number LM334 and the 126 ohm resistor added new wire adjusted the temp and now it works.
Ill say this anything electrical that doesnt work is getting attention. This is prime example of at least make sure the reason something doesnt work is not a short.

Dave

We all dream about the day we get to that level of repairs on the list.
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