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March 18, 2018, 02:41:59 PM *
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 on: March 17, 2018, 09:18:30 AM 
Started by mikke60 - Last post by luvrbus
If you have a Williams air throttle it makes matters worse without a delay

 on: March 17, 2018, 08:01:22 AM 
Started by windtrader - Last post by chessie4905
That's why having safety chains are important and should be installed if absent. Also keep them crossed. Provides better control of hitch or ball if it let's loose.

 on: March 17, 2018, 07:58:40 AM 
Started by NewbeeMC9 - Last post by chessie4905
Penetrating oil doesn't help when removing pipe fittings. Anyway, most fittings on our coach are brass, so they don't rust fast. They are sealed with pipe sealing compound. This stuff can get pretty hard over the years and make it difficult to break loose fittings. If you encounter this, especially on larger ones, heat threads with propane torch some. It will soften sealant and assist in removal.

 on: March 17, 2018, 07:48:02 AM 
Started by Mike in GA - Last post by Mike in GA
Looking forward to including some out of the area folks. Last rally in Lakeland, FLA, we had five coaches from Canada and the Midwest!
Mije in GA

 on: March 17, 2018, 07:25:55 AM 
Started by NewbeeMC9 - Last post by bevans6
On my similar year MCI (if you have an MC-9, that is) the PPV is mounted on the emergency brake tank, which is the passenger side tank between the front wheels.  There should be two things mounted there - the E-filter and the PPV.  The feed to the governor is after the PPV so that would explain the no-purging, and the feed to the emergency tank is also after the PPV, so no air to release the parking brake.  Also no air to the suspension or accessory systems, which include all of the engine air systems.

 on: March 17, 2018, 06:47:18 AM 
Started by NewbeeMC9 - Last post by buswarrior
More than likely, the fittings will benefit from some penetrating oil, prior to removal attempts.

Proper stuff, NOT WD40...

Commercially available preparations or home brew. 50:50 transmission oil to acetone has been raved about for decades by those who have concocted it.

Get a copy of the coach air schematic for your maintenance log, and mark the repairs. Then you have the history of known and unknown...

Happy coaching!

 on: March 17, 2018, 06:27:54 AM 
Started by NewbeeMC9 - Last post by NewbeeMC9
Good Morning,

Did a search and found a similar issue on the other board, but no resolution yet.

Anyhoo.  Bus is in storage but need to get it out soon, air system airs up on gauge, dryer does not purge(AD-9)  and the pressure can be brought down by cycling the service brakes, park brakes will not release, moved it by applying air to the towing air port to keep brakes released.

I think it is PPV and will order one and replace anyway, can't seem to find where it is, also may be a check valve, trying to figure out from the manuals, but old copies are tough.

Here is the valve Andy Posted.

Part Type: Air Valve
System: Air
Part Name: Pressure Protection Valve
Part Description 1: PR-2 Pressure Protection Valve, 65 psi
Manufacturer: Bendix
Mfr. Part Number: 277147
Vendor: NAPA
Part Number: TWD BENOR277147X
Cost: 41.85


Have new cartridge and purge valve for dryer to service while I'm under there.

Any Help with this or experience or pics is appreciated.

 on: March 17, 2018, 06:21:39 AM 
Started by mikke60 - Last post by chessie4905
Yes it will supply more power, but if other parts of total package aren't changed also, you end up with what you have. Plus, then you can have overheating issues when engine is working hard if cooling system is marginal. Also, don't lug engine with big injectors. Sure way to cause internal damage as combustion temps soar. You need to pull the easiest valve cover and report numbers and letters on small round tag on an injector. Example: N90 or G110 or C60. If they are way oversize, will give nothing but grief over time. If they are a commonly used size, tune up, adding some model of fuel control Detroit makes, turbo change, etc. can help or totally alleviate issue. The engine tag with model number would be helpful if it is still on valve cover, or stamped on cylinder block on older engines.

 on: March 17, 2018, 06:14:49 AM 
Started by mikke60 - Last post by Utahclaimjumper

 on: March 17, 2018, 06:08:17 AM 
Started by richard5933 - Last post by chessie4905
Eaton makes semi-automatic transmissions and automat versions. Someone on here had one a while back. Don't know if he's on here anymore.

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