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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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  #1  
Old 10-04-2019
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InfiLights InfiLights is offline
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Default 8v92 air compressor hose sprung a leak

Hi all,


If it is not one thing, it must be another....
Just brought the bus back from the paint shop and as it was being parked I saw coolant leaking on the back side of the engine, passenger side.

Now, I did not think first that it is a compressor coolant hose since Myna swore up and down that they were changed as precaution 3 year ago.....original hoses, the long hose leaks right at the clamp securing it to the engine block.

I can already see it will be difficult to access the fitting behind the starter, looked from below and my hands can't fit through those tight openings but I will figure it out somehow....i don't have dash AC and the compressor is still there...time to yank it out and make room...maybe I can get to that fitting easier that way....

The bed platform is out, mattress out, but the air compressor seems to be a ways back still with the hatch under the bed open....is there anything else that can come out to get on top of the Bendix air compressor ?

Here is where i also need some help...I would like to order both correct hoses ( short and Long) with proper fittings and do the swap in one move. I will have to find somebody to help with it since I am 2 weeks out from Liver surgery and can't do it myself.

So to recap, is there a trick to remove more wood from the bedroom frame bulkhead to access the air compressor easier ?
And, where can I order pre-made correct hoses fro the 8v92 mechanical to change them over ?


Appreciate the help. Thank you.
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Last edited by Dieselbird01; 10-05-2019 at 01:22 PM. Reason: WOG Guidelines
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Old 10-04-2019
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I don't know of any trick to cut more wood or make the hole bigger.
The last ones i did on the compressor side i could get to them from the side,i made a special wrench and with much swearing and skinned elbows i got them changed.
Long arms helped a bunch.
And a heavy packing quilt to lay my fat belly on!
The bottom end of the hoses may require the removal of the starter.
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Old 10-04-2019
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On my 88WB there was a metal hatch under the bed that once removed you could access the upper hose.
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Old 10-04-2019
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I removed that metal hatch but the compressor sits further forward of the opening under the floor (towards the front of the bus).


I looked again and Randy is right (thank you) we could probably get to the compressor side hoses connections from the side of the engine, step stool, pillows, long arms...they will come off.


The bottom connection above the starter will be the pits....
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Old 10-04-2019
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Here is a thread on modifying the floor. Not sure if it helps.

Of course check the 8V92 Coolant Hose thread for more pictures and info.

This is the post by John on the hose specifications in the coolant hose thread.

What I would do since you're getting ready for surgery:
- get the hoses made
- call the local truck stop for roadside assistance and have them come to you
- show the guy which hoses need to be changed
- pay the man
- sigh and know the hoses are changed
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Old 10-04-2019
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Remove the starter to gain access. To get to the almost hidden starter bolt...a short 12 point socket, long extension, long breaker bar. Floor jack under starter to carry the load.

Rear drive wheels up on platform helps to gain more working room.

Disconnect all 12V at the batteries, including the gen. battery. Removing the a/c compressor will help with disconnecting the solenoid ground.
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Old 10-04-2019
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Quote:
Originally Posted by Kiwi3 View Post
Here is a thread on modifying the floor. Not sure if it helps.

Of course check the 8V92 Coolant Hose thread for more pictures and info.

This is the post by John on the hose specifications in the coolant hose thread.

What I would do since you're getting ready for surgery:
- get the hoses made
- call the local truck stop for roadside assistance and have them come to you
- show the guy which hoses need to be changed
- pay the man
- sigh and know the hoses are changed

His hatch is not the same as the WB hatch.
I made an odd wrench to take the bottom hose off,great care is required,if you snap the adapter off in the block your going to want to buy some new rope and hang yourself!
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Old 10-04-2019
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When I changed out my hoses, I got almost everything apart and back together again with the exception of being able to tighten one of the hoses. I called our local mechanic who has 1892 experience and he had that special range and was able to get things put back together in a matter of moments. I had bloody knuckles for a day and a half trying to do it myself, but mine is a widebody as well.
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Old 10-05-2019
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Access....unfortunately... is probably the reason that these coolant hoses haven't been changed on most the of buses out there.

I was lucky as a newbee years ago....mine broke..... on the road....but the alarmstat worked perfectly and immediately shut down the bus with the loss of coolant. My removed hoses, snapped apart in my hands!
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Old 10-05-2019
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I went ahead and dropped the starter to get to the hoses on the side of the block. I did break off the fitting in the block. Luckily its brass so an easy out pulled it out with ease. Not an easy project by any means. I am guessing with an 8v92 you have a little less room than a 6v92.
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