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PT & WB (Twin Axle Pusher Unique Issues) If you have a unique issue with your PT or WB model coach and it can't be answered in one of the other forums here, then this is where you can list it....list your PT Parts here too.

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  #81  
Old 01-05-2020
badandy badandy is online now
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Here are the two pumps. As far as I can tell these are the only two versions of the pump used on any of the 2-stroke coaches. They are the same kind of pump, but the longer one has two stages, hence the extra port. The wide angle of the camera makes the new one look huge, but they are exactly the same dimensions outside except for their length.

The old pump has been out before. I can tell by the barely-tight bolts and the reused RTV'd gasket. Amazing that it wasn't leaking. It just kinda flopped out once I had the bolts out. There is no way to remove the pump and hoses except through the bedroom or if the radiator is out. You can't do it from underneath. I have to figure out how to get that section of power steering hose out, it's some crazy gymnastics to get to that.



A view of the old pump on the engine. The compressor is easy to get to, I might order a new one this week. It's not hard to get to with that section of exhaust removed. A previous owner home-built the exhaust and did a pretty good job. They put a section of flexible tubing in there using band clamps, but once I got to it I saw an exhaust leak. Check out the WEAR on the exhaust tubing here from the stainless flex pipe! It's almost worn completely away. Now I have to fix the exhaust. Add a few more things to the list.

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  #82  
Old 01-07-2020
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Shiny bits. Fan is ready to go finally. I ended up with a 7/8" thick adapter for the fan, which gives me about 3/4" between the fan tips and the hydraulic motor bracket.
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  #83  
Old 01-07-2020
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Randy Dupree Randy Dupree is offline
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Shiny bits. Fan is ready to go finally. I ended up with a 7/8" thick adapter for the fan, which gives me about 3/4" between the fan tips and the hydraulic motor bracket.

Nice work,thanks for the pics.
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  #84  
Old 01-07-2020
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Slowly but surely...
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  #85  
Old 01-07-2020
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Andy I know your from Wisconsin. But don't your toes get cold outside in the snow?
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  #86  
Old 01-07-2020
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Great work, a machinist, that can repair electronics.
Are there two badandy's?
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  #87  
Old 01-07-2020
badandy badandy is online now
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Quote:
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Andy I know your from Wisconsin. But don't your toes get cold outside in the snow?
Not too bad, really. I have to put long pants on at about 25 unless it's windy.

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Great work, a machinist, that can repair electronics.
Are there two badandy's?
It depends who you ask. This is what I do every day that pays for the Wanderbodge. Between cycles on the VMC I fixed your clock
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  #88  
Old 01-07-2020
Alever Alever is offline
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Andy did you ever determine the reason the seal failed on your fan motor? I know it was a different thread but I think it started you on this path.
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  #89  
Old 01-07-2020
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Allen - I don't know 100% for sure yet. I have to take the old pump apart to make sure the flow diverter valve is working right, but I know the 12v valve that turned the fan on was sticky, but not stuck, right after the event. The filter on the return side in the reservoir was half the flow of the modern ones and the filter was ooold, but looked perfectly fine, no gunk anywhere in the system, either. I just don't know yet.
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  #90  
Old 01-15-2020
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I managed to get the fan hub key modified. So I am reusing the original hub, but I cut a little chamfer in the back so it doesn't interfere with the end of the shaft taper. It didn't need much. That giant smack mark in the hub was not from me, either. I suspect the mechanic that installed the new fan motor a couple winters ago did it, but I don't know. The keyway was narrower in the old hub, so I CNC'd the new key down to fit. It fit nice without much fiddling for a change. I plan on getting the new pump, motor, reservoir, and air compressor swapped in this week if I can escape work for a bit. Then it's just time for some new hoses and awaaaay we go.



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