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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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  #21  
Old 10-09-2013
a33willys a33willys is offline
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Join Date: Mar 2013
Location: Harwich
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Default broken belt

I hope future WOG members look up local members when help is needed. I am listed on the Bird Map, and have access to heavy duty towing, welding, and RV repair facilities on the Cape. I'm glad you were able to "git 'er done" and get home. We hope you come back to the Cape again and leave on better terms (not a hook)
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  #22  
Old 02-21-2015
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Mike Huggler Mike Huggler is offline
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Default SP36 Fan Belt Part numbers and order of install

Help, I have lost my record for the Fan Belt part numbers

Some one had posted them befor but I can seem to put my finger on them.

I also need the order to put them back. Just put on my new Alternator and pulled off the AC compressor.

Thanks to all

Mike
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  #23  
Old 02-21-2015
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I have that at the coach. Will not be back till late this afternoon
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  #24  
Old 07-30-2016
technomage99 technomage99 is offline
TECHNOMAGE
 
Join Date: Sep 2009
Location: bolton
Posts: 307
Angry A BROKEN BELT UNLEASHES **** (part 2)

Here it is just about three years after the broken belt
debacle. Today, while inspecting the engine compartment and checking tension on the belts (by hand) I noticed
that the two Power steering drive belts appear to be "upside down".
These are the replacements for the belts that caused me great expense and aggravation Sept 2013 when one or more broke and "tangled"
with other belts. I've been "grounded" for three years chasing other problems one at a time
and saving my $$ for another trip.

I have about a 100 miles on the belt set.

Does anybody have any idea why a mechanic would put those two belts on "rib side up"???

The "upside down belts seem to be at the same tension as the rest of the belts.

Naturally, on the SP those are the "innermost" belts on the 3208 ATAAC engine.

I'm sure the shop that put them in will be happy to fix the problem. Yeah right!
Anyway that shop is way off my path, so it would be a waste of fuel just getting there.

I know pretty much how to get into the SP's engine compartment from the rear:
1. Remove bolts from trailer hitch and swing it down.
2. Remove 4 bumper bolts and remove bumper.
3. Remove two bolts in order to swing the radiator out (maybe 45 degrees).
4. Remove (a bunch) of bolts from the fan and remove fan.
5. Squeeze my self in there to work.
6. Fabricating a bunch of gonzo pulley tensioners (probably out of wood) is not a big deal.
I have lots of threaded rod from other projects.

After that I start to sweat.

Do we have a detailed procedure for replacing all the belts for the SP36 (3208ATAAC engine) ???
From the nice pictures that Flagman put up, I can see that the AATAC has a different belt layout
and with just one PS belt and NO belt tensioner.

And I might add doing it right knowing nothing about any little Caterpillar belt adjustment tricks??
Looks like a lot of "wrassling" with sliding and "swinging" things with
plenty of opportunity to introduce problems!

Next: Big (for me questions/concerns):
I would like to replace the PS filter and fluid.
What is the technique/procedure to replace/push out all the old fluid and drain it w/o introducing air?? (consensus?)
Is the synthetic fluid really the way to go with a 27 year old coach vs just using Dex III?
Note: I have a slow leak from the "Power steering box" above the batteries (just enough seepage to be noticeable,
but no volume -- yet -- another story.
I don't want to cause a "gusher". Visablity and access to that area is terrible thanks to all the wiring.

Last little question:
What is a good enough belt tension gage that I can use in a tight space?
I will order one right away.

Thanks for your comments in advance.
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1989 SP36
Bolton, Ct.
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  #25  
Old 07-30-2016
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nbedinger nbedinger is offline
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Hey Cal--

Can you get the belt number off the rolled-over belts? Look them up and see if they are the same width as specified for your pulleys. It doesn't take much difference in the v-pulley and v-belt width to upset things.

I turned in my McGuyver tensioner for one of these:
http://www.mscdirect.com/product/details/35438209
Highly recommended

The belt change job is all about using the right grooves and getting the fan tensioner seated and tight when completing the job. The rest is pretty plain old bolt loosen/tighten and tesnioning belts. Take some pics from the side first (reach cam into side louver doors), to remind yourself what the belts look like installed. If you get one in the wrong groove, it is pretty obvious when viewed from the side. Use the pics to guide you and final check.

John Alley swears by tensioning the power steering (92 SP36) from below. Maybe he'll explain if he's logging in these days, but with excellent NW weather this summer he's probably out and about.
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Ned Bedinger
1991 SP36
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Last edited by nbedinger; 07-30-2016 at 07:11 PM.
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  #26  
Old 07-30-2016
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Turbokitty Turbokitty is offline
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I am sure the mechanic did not put them on upside down and that they flipped on their own because of misalignment issues. I have seen flipped belts several times over the years. A thorough alignment inspection is in order once opened up. As said earlier, loosen up the accessories as needed and then reinspect while the engine is running at various RPM's, looking for the smallest of anomalies
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Timberlake Products Group, Inc.
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  #27  
Old 07-30-2016
technomage99 technomage99 is offline
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Location: bolton
Posts: 307
Default UPSIDE DOWN BELTS

Thanks for the fast reply Ned.

I can't quite believe that those two power steering belts somehow got themselves upside down all by themselves. I do have the part numbers from
invoices in the blue box, but its pouring rain outside right now. They are pretty tight and they have about a 100 miles on em.

Any ideas for the rest of my questions?

Thanks,
Cal
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1989 SP36
Bolton, Ct.
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  #28  
Old 07-30-2016
technomage99 technomage99 is offline
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Location: bolton
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Default UPSIDE DOWN BELTS

Thanks Ned and Ryan:

How the PS pump alignment could get so bad as to flip belts beats me.
I'll have to open up the rear to peer in to see what gives. I don't think the
previous mech got belts into the wrong grooves and got everything cockeyed.
They look aligned from the pass side.
The only thing I can think of to check alignment is using a "builders square"
up aganst the side of the main crank pulley. Might require a
"calibrated eyeball" better than mine. As far as I can see, the 3208ATAAC
does NOT have a "spring loaded" belt tensioner, just nut, bolt, and wrestling kind.

Any comments on PS filter and fluid flushing and replacement procedure?
Thanks, Cal
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1989 SP36
Bolton, Ct.
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  #29  
Old 07-30-2016
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nbedinger nbedinger is offline
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You would find two (2) PS belts on my '91 ATAAC. The PS pump mounts with two bolts to give a little extra adjustment range side/side and up/down. Loosen both bolts. A little gentle persuasion ought to make the pump move for adjustment once the bolts are loose. The threaded tool is probably all the force needed to do the job.

When all is said and done, I believe a well-adjusted PS belt won't squeal under load. If it squeals, the belts are too long or they're stretched and need to be tighter. (Or pulleys are worn, greasy, other problems with pulley on PS pump).

I tighten new belts by Crikit, and I add additiional tension if they squeal. The extra tension is a little scary thinking about pump bearing side load and seal damage, but the Crikit isn't really very precise method either so I say do what it takes to get squeal-free belts. That squaealing sound under sterering strain is a good indication that your belts are wearing out due to slippage. Tighten until squeal goes away.

The PS fluid filter is inside the PS reservoir, very simple to change it, my local NAPA had it in stock.

I read about Redline synth PS fluid here and have it in my PS hydraulics. No problems after 2 years.

Good luck getting a set of matched PS pump belts. I run two that are'nt exactly the same length but are both tight enough to carry some of the load.
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1991 SP36
BB Body No. 93327
Full-time in 2019

Last edited by nbedinger; 07-30-2016 at 08:20 PM. Reason: perfectionist
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  #30  
Old 07-30-2016
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nbedinger nbedinger is offline
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I forget how I changed PS fluid, it was a bit of a kludge, not a full drain-and-refill operation like you'd do if you were replacing the pump or hoses. Seems to me i drained the reservoir and filled it with Redline, redirected the return line into a can, and then added more Redline into the reservoir while engine ran, until it appeared in the return line/can. Kill engine, reattach return line, top up, restart, exercise steering side to side, done. If your rear ignition isn't working, get someone to handle engine ignition start/stop, it doesn't take long to fill the system.
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