1989 Grandvilla air system and leaks

Topic: 1989 Grandvilla air system and leaks (Read 3362 times) previous topic - next topic

Re: 1989 Grandvilla air system and leaks

Reply #75 – May 06, 2015, 11:07:27 pm

Quote from: rbark – May 06, 2015, 05:02:42 pm

Mark, if you feel that the oil is too thin, why not take a sample and send it to Blackstone labs or any other oil sampling company. You might have a fuel issue that is contaminating the oil. Sure wouldn't hurt.

Probably not a bad idea.!!!

Re: 1989 Grandvilla air system and leaks

Reply #76 – May 08, 2015, 11:12:08 pm

Update...

The dryer bypass went well ... I am taking back my remark on the usage of the 90 degree double male 3/4" flare fitting. The 3 piece works fine.. and absolutely no fighting with the lines....

The Governor didn't fare so well.. lines came off without a hitch.. left bolt backed off fine...... but the right bolt head rounded off.. (rolleyes) before I got it too rounded I went and bought a set of special sockets to grab the head, it advertised, even for rounded heads, no problem.. yah right.. waste of money!

Soooooo.... out comes the sawzall.. 90 degree nipple for wet tank line had to be sawed off first.. then on to the right rounded bolt head.. cut the head off, although the bolt heads weren't marked hardened that I could see.. It sure cut like it was.. I went thru 3 blades cutting that one stupid little half inch wrenched bolt head off...

But now theres a burr, and it wouldn't allow me to pry the governor over it.. I didn't bring a detail grinder with me.. so, I am now pretty much shot out of the saddle with the Governor till the next trip out..

So, on to the oil and filter change... filled the filter full of new oil before installing it..
put in a total of 5.5 gallons of shell Rotella straight 40 weight. check...

I saved a quart of the old oil sealed in a glass jar to have tested..

Spent a total of 8 hours working on it..... two trips to northern tool and napa included...

I do have a question .. Is the governor even necessary if I bring in a large compressor to pony into the onboard 120 volt compressor? Does the air circulate from the AC voltage compressor unchecked ?

or could I just cap off the return line from the governor to the wet tank and call it a day..

if I just say the hell with the governor for now.. just to get it aired up and get it home via tow truck.. or is this not how it works... sorry for being so thick....

Thanks

Mark

Re: 1989 Grandvilla air system and leaks

Reply #77 – May 09, 2015, 06:54:46 am

If your are still going to use a tow truck you don't need to be doing any of this stuff. The tow truck will either air up the coach with His air, Or he is gong to cage the brakes and tow it or put it on a flatbed.You don't need to do anything but make the phone call. Running back and forth a hundred miles round trip as many times as you have It probably would have been cheaper to do that from the get go.

Re: 1989 Grandvilla air system and leaks

Reply #78 – May 09, 2015, 07:53:51 am

If you coach is a Unihome (Foretravel chassis), you must have the air suspension inflated to tow it. The coach sits on the tires when the suspension is not inflated. You might be able to winch it onto a trailer, but towing without airing it up is a no- no even with the brakes caged.

Re: 1989 Grandvilla air system and leaks

Reply #79 – May 09, 2015, 08:05:23 am

I forgot about the suspension but any good tow company can deal with that issue using their air.

Re: 1989 Grandvilla air system and leaks

Reply #80 – May 09, 2015, 10:20:19 am

Quote from: stump – May 09, 2015, 08:05:23 am

I forgot about the suspension but any good tow company can deal with that issue using their air.

Even now with the Governor hanging half off now and lines unhooked ?

Re: 1989 Grandvilla air system and leaks

Reply #81 – May 09, 2015, 11:35:06 am

Looking at the air schematic for my 1990 bus, it looks like the aux compressor will air up the suspension (it does on mine). The suspension is aired up from the front and rear tanks and there are directional valves between the wet tank and the front and rear tanks. The engine driven compressor airs up the wet tank and is not directly connected to the from and rear tanks. Get the governor replaced and drive it home if the brakes work.

Re: 1989 Grandvilla air system and leaks

Reply #82 – May 09, 2015, 12:13:27 pm

Too drive it anywhere, especially for someone new to motorhomes, you should have air pressure and available volume that cycles between about 85 and 110 psi. Brake applications will drop it considerably and you will need a good CFM compressor to keep it in operating range. I don't think the onboard 110V compressor is up to the task. What might be good for moving the coach to the back of a tow truck won't do the trick for driving down the road. Driving with lower air pressure is inviting disaster.

Pierce

Re: 1989 Grandvilla air system and leaks

Reply #83 – May 09, 2015, 01:27:08 pm

Quote from: Pierce & Gaylie Stewart – May 09, 2015, 12:13:27 pm

Too drive it anywhere, especially for someone new to motorhomes, you should have air pressure and available volume that cycles between about 85 and 110 psi. Brake applications will drop it considerably and you will need a good CFM compressor to keep it in operating range. I don't think the onboard 110V compressor is up to the task. What might be good for moving the coach to the back of a tow truck won't do the trick for driving down the road. Driving with lower air pressure is inviting disaster.

Pierce

So Pierce, are you thinking even though the governor is unhooked and hanging, it still can be towed? I am not talking about trailer towed.. just a standard pull tow..

Re: 1989 Grandvilla air system and leaks

Reply #84 – May 09, 2015, 01:28:25 pm

Quote from: Kemahjohn – May 09, 2015, 11:35:06 am

Looking at the air schematic for my 1990 bus, it looks like the aux compressor will air up the suspension (it does on mine). The suspension is aired up from the front and rear tanks and there are directional valves between the wet tank and the front and rear tanks. The engine driven compressor airs up the wet tank and is not directly connected to the from and rear tanks. Get the governor replaced and drive it home if the brakes work.

Thanks John

Re: 1989 Grandvilla air system and leaks

Reply #85 – May 09, 2015, 02:01:33 pm

As long as the air bags have pressure and tires are well clear of the top of the wheel well, a big tow truck can pull it. Best on the back of a large flat bed but a tow truck would probably OK for a short distance. Easy to damage the Fiberglas if operator is not careful. Still have the problem of removing the driveshaft or pulling the axles if the rear is on the ground. Might be less hassle and save money in the long run to have the whole thing on a flat bed. Lots of things can go wrong in a hurry if not really careful. Not to throw water but a new to RVs/big vehicle owner is the last person that should be directly involved in a tow.

Pierce

Re: 1989 Grandvilla air system and leaks

Reply #86 – May 09, 2015, 05:02:04 pm

Quote from: Pierce & Gaylie Stewart – May 09, 2015, 02:01:33 pm

As long as the air bags have pressure and tires are well clear of the top of the wheel well, a big tow truck can pull it. Best on the back of a large flat bed but a tow truck would probably OK for a short distance. Easy to damage the Fiberglas if operator is not careful. Still have the problem of removing the driveshaft or pulling the axles if the rear is on the ground. Might be less hassle and save money in the long run to have the whole thing on a flat bed. Lots of things can go wrong in a hurry if not really careful. Not to throw water but a new to RVs/big vehicle owner is the last person that should be directly involved in a tow.

Pierce

I don't know how a flat bed trailer would be able to unload the coach.. it has to be backed into a spot 90 degrees in proportion to the road.. approximately 12 feet wide... I am sure a standard rolling tow can back it in.. just don't understand what a flat bed can do... or the requirements involved.. perhaps i should call a local flat bed hauler just to pick his brain.

Re: 1989 Grandvilla air system and leaks

Reply #87 – May 10, 2015, 07:27:19 am

Could you hook up your new governor temporarily without removing the old one.?

Don't know if this will help but here is diagram of my air system.
Air Dryer By pass (Redux)

Re: 1989 Grandvilla air system and leaks

Reply #88 – May 10, 2015, 10:39:43 am

Quote from: TheBrays – May 10, 2015, 07:27:19 am

Could you hook up your new governor temporarily without removing the old one.?

Don't know if this will help but here is diagram of my air system.
Air Dryer By pass (Redux)

Thanks,

I thought about that, but it must be bolted directly to the compressor, as there is a gasket between them with air flow from or to the compressor directly from or to the Governor.

Re: 1989 Grandvilla air system and leaks

Reply #89 – May 10, 2015, 01:57:35 pm

Grind the rest of the stuck bolt head off, remove the governor, then go rent or buy a stud extractor, soak the bolt threads with PB Blaster, tap the bolt with a hammer, soak it again, wait 15 minutes and extract it with the stud extractor.

Re: 1989 Grandvilla air system and leaks

Reply #90 – May 10, 2015, 02:07:42 pm

Quote from: Kemahjohn – May 10, 2015, 01:57:35 pm

Grind the rest of the stuck bolt head off, remove the governor, then go rent or buy a stud extractor, soak the bolt threads with PB Blaster, tap the bolt with a hammer, soak it again, wait 15 minutes and extract it with the stud extractor.

What is this stud extractor you speak of.. ? Are you referring to an EZ out? Drilling a whole into the stud and then backing it out?

Re: 1989 Grandvilla air system and leaks

Reply #91 – May 10, 2015, 02:25:10 pm

Titan Stud Puller — 3/8in. Drive, Model# 16023 | Socket Specialty Tools|...

Re: 1989 Grandvilla air system and leaks

Reply #92 – May 10, 2015, 03:33:36 pm

Quote from: cajk – May 10, 2015, 02:25:10 pm

Titan Stud Puller 3/8in. Drive, Model# 16023 | Socket Specialty Tools|...

Not much room too work the bolt.. it's pretty close to a solid wall.. a ratchet and short socket just fits in... you wouldn't be able to back it all the way out with a socket..
I tried to use these from Northern Tool.. 25 bucks.. but just rolled sideways off the rounded bolt. Grip-Tite Super Socket Rounded Bolt Removers — 7-Pc. SAE Set, Model# 00111 |...
Looks like your titan stud puller would work if I had the room..

It's 2:30PM, Hot and Humid in Houston.... time for a nap.

Re: 1989 Grandvilla air system and leaks

Reply #93 – May 10, 2015, 05:44:27 pm

Ouch, If you can't get that tool on the head of the bolt it will have to come out some other way. Did you place the tool over the head of the bolt and DRIVE it on with a hammer or punch ? If you can drive it on and turn it to left it SHOULD grip and come out. Part of the trick will be to soak it well with PB Blaster or some such and use a hammer on end of it to jar it loose. Now that I look again I am confused, do you have a STUD or a bolt that wrung the head off ? If a STUD you will need a different type tool as someone else mentioned.
Tell you what, pick up the phone and give me a call at 770-595-3891 and we will discuss it, maybe we can figure it out. I am in GA probably an hour behind you.

Gary B

Re: 1989 Grandvilla air system and leaks

Reply #94 – May 10, 2015, 09:58:29 pm

Quote from: Gary Bouland – May 10, 2015, 05:44:27 pm

Ouch, If you can't get that tool on the head of the bolt it will have to come out some other way. Did you place the tool over the head of the bolt and DRIVE it on with a hammer or punch ? If you can drive it on and turn it to left it SHOULD grip and come out. Part of the trick will be to soak it well with PB Blaster or some such and use a hammer on end of it to jar it loose. Now that I look again I am confused, do you have a STUD or a bolt that wrung the head off ? If a STUD you will need a different type tool as someone else mentioned.
Tell you what, pick up the phone and give me a call at 770-595-3891 and we will discuss it, maybe we can figure it out. I am in GA probably an hour behind you.

Gary B

Hey Gary,

I did soak it with PC Blaster.. one of the bolts backed out fine.. one just rounded off..

There is no head now.... I sawed it off.. the rounded head was acting like it was fused to the governor.. with the first bolt backed out, you can now slightly spin the governor in place.. and the rounded off bolt head was turning with it.. which means the thread of that bolt is loose into the compressor.. so I sawed it off.. but couldn't pull the governor over the stud because of the burr.. This Tues or Wed when I return, I'll use a very small die grinder and remove the burr... hopefully it will then slide over the stud.. then I will have to cut the stud again from the backside of the governor, leaving as much stud as possible.. my thoughts are a good small vice grip then will allow me to back it out without trouble..

Thanks !! Mark

Re: 1989 Grandvilla air system and leaks

Reply #95 – May 10, 2015, 10:27:31 pm

It sounds like the bolt is rusted to the governor and not the compressor.

Re: 1989 Grandvilla air system and leaks

Reply #96 – May 11, 2015, 07:53:49 am

Quote from: Kemahjohn – May 10, 2015, 10:27:31 pm

It sounds like the bolt is rusted to the governor and not the compressor.

yah.. or something.. I cant see any rust..

It would be nice to know exactly what bolt it is, so I don't have to waste another trip
if I cant find the correct size bolt in Conroe Texas.

A half inch wrench fits the hex head of the bolt

Re: 1989 Grandvilla air system and leaks

Reply #97 – May 11, 2015, 07:58:51 am

1/2 " head should be 5/16" bolt I believe, I suspect that it is coarse threaded.

http://www.boltdepot.com/fastener-information/bolts/us-bolt-head-size.aspx
Gary B

Re: 1989 Grandvilla air system and leaks

Reply #98 – May 11, 2015, 01:43:57 pm

Quote from: Gary Bouland – May 11, 2015, 07:58:51 am

1/2 " head should be 5/16" bolt I believe, I suspect that it is coarse threaded.

http://www.boltdepot.com/fastener-information/bolts/us-bolt-head-size.aspx
Gary B

Your a Trooper Gary...

I'll buy 5 pairs of 5/16" coarse, hardened, bolts starting with .75" up to 1.75" past the width of the Governor,
assuming they are offered in 1/4" increments.. ( betting on between 1." and 1.50" past )

Re: 1989 Grandvilla air system and leaks

Reply #99 – May 11, 2015, 08:37:35 pm

Since you were able to remove the left bolt from governor, it would be a great idea to match it up with 2 new bolts ? cheaper too.

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