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AC compressor bracket
07-04-2009, 03:46
Post: #1
AC compressor bracket
I am having a problem with my Engine A/C compressor bracket the holes became ege
shape and throwing belts. Does anyone have a fix or is the replacement bracket
available anywhere?

Hisham Amaral
97 Wanderlodge 43'
Detroit 60 series engine
West Bloomfield, MI
248-935-5390
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07-04-2009, 05:20
Post: #2
AC compressor bracket

Hisham
I took a look at the A/C bracket on my engine and it seems to be an OE bracket that would be used on most if not all DD series 60 engines.
My first thoughts are a Prevost Factory service center or a Detroit Diesel service facility.Holland MHis another source,if you haven't tried them yet.
Fred & Jeanne Hulse
Morristown Arizona
1997 Wanderlodge WLWB41
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07-04-2009, 06:44
Post: #3
AC compressor bracket
weld the holes up and redrill. Replace the bolts with ones with no thread near
the wrench end (no thread thru bracket). Bolt shoulder has larger dia. the
thread is what is cutting the bracket during vibration. It was probably removed
prior and the tec did not replace the lockwasher or use loctight
Greg ofTim&Greg
94ptca

--- In WanderlodgeForum@yahoogroups.com, "Hisham Amaral"
wrote:
>
> I am having a problem with my Engine A/C compressor bracket the holes became
ege shape and throwing belts. Does anyone have a fix or is the replacement
bracket available anywhere?
>
> Hisham Amaral
> 97 Wanderlodge 43'
> Detroit 60 series engine
> West Bloomfield, MI
> 248-935-5390
>
Quote this message in a reply
07-04-2009, 07:27
Post: #4
AC compressor bracket
Hish- are you talking about the L-shaped bracket that is used for tensioning? If
so, I would consider welding the egg-shaped area partially closed and
re-drilling the hole. You may also be able to drill out the hole and use a
bronze bushing to re-size the opening correctly. You may also be able to
re-drill the upper bracket and install bushings to correct the problem. I helped
Bill Tarrier work on his last week and can see where it's tough to properly
tension/tighten the compressor.

Shane Fedeli
85PT40
Hershey, PA

--- In WanderlodgeForum@yahoogroups.com, "Hisham Amaral" wrote:
>
> I am having a problem with my Engine A/C compressor bracket the holes became
ege shape and throwing belts. Does anyone have a fix or is the replacement
bracket available anywhere?
>
> Hisham Amaral
> 97 Wanderlodge 43'
> Detroit 60 series engine
> West Bloomfield, MI
> 248-935-5390
>
Quote this message in a reply
07-04-2009, 11:31
Post: #5
AC compressor bracket
--- In WanderlodgeForum@yahoogroups.com, "sfedeli3" <sfedeli3@...> wrote:
>Shane
I agree with you that the bracket can be welded but There are two parts to weld
and the engine bracket and the AC compressor bracket also the bushing must
replaced due to extensive wear. With that, welding will be very time consuming,
it maybe more time effective just to buy the brackets and end the problem. And
maybe not for long the current bracket lasted 55K mile not bad for planned
obsolescence.

See you at OSH and again thank you for the help.

Hish

> Hish- are you talking about the L-shaped bracket that is used for tensioning?
If so, I would consider welding the egg-shaped area partially closed and
re-drilling the hole. You may also be able to drill out the hole and use a
bronze bushing to re-size the opening correctly. You may also be able to
re-drill the upper bracket and install bushings to correct the problem. I helped
Bill Tarrier work on his last week and can see where it's tough to properly
tension/tighten the compressor.
>
> Shane Fedeli
> 85PT40
> Hershey, PA
>
> --- In WanderlodgeForum@yahoogroups.com, "Hisham Amaral" wrote:
> >
> > I am having a problem with my Engine A/C compressor bracket the holes became
ege shape and throwing belts. Does anyone have a fix or is the replacement
bracket available anywhere?
> >
> > Hisham Amaral
> > 97 Wanderlodge 43'
> > Detroit 60 series engine
> > West Bloomfield, MI
> > 248-935-5390
> >
>
Quote this message in a reply
07-04-2009, 11:37
Post: #6
AC compressor bracket
--- In WanderlodgeForum@yahoogroups.com, "Fred Hulse" wrote:
>Fred

Thank you I will try Holland MH in MI they may carry that part in stock.
This part is failing too soon the should keep a large inventory on hand.

Hisham and Sue Amaral
97 Wanderlodge
W. Bloomfield MI

> Hisham
> I took a look at the A/C bracket on my engine and it seems to be an OE bracket
that would be used on most if not all DD series 60 engines.
> My first thoughts are a Prevost Factory service center or a Detroit Diesel
service facility.Holland MH is another source,if you haven't tried them yet.
>
> Fred & Jeanne Hulse
> Morristown Arizona
> 1997 Wanderlodge WLWB41
>
Quote this message in a reply
07-04-2009, 11:47
Post: #7
AC compressor bracket
--- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor" wrote:
>Greg
The bracket is badly grooved due the vibration from the engine and the
overtensioning of the belts by the so call tecks. It would take a good deal of
welding and machineing to correct the condition I have. I would be much better
off to replace the part and have the assembly done correctly the first time,
like you said use shoulder belt, lock washer and lock tite.

Thank you and happy 4th of July.
Hisham Amaral
> 97 Wanderlodge 43'
> Detroit 60 series engine
> West Bloomfield, MI
> 248-935-5390




> weld the holes up and redrill. Replace the bolts with ones with no thread near
the wrench end (no thread thru bracket). Bolt shoulder has larger dia. the
thread is what is cutting the bracket during vibration. It was probably removed
prior and the tec did not replace the lockwasher or use loctight
> Greg ofTim&Greg
> 94ptca
>
> --- In WanderlodgeForum@yahoogroups.com, "Hisham Amaral" wrote:
> >
> > I am having a problem with my Engine A/C compressor bracket the holes became
ege shape and throwing belts. Does anyone have a fix or is the replacement
bracket available anywhere?
> >
> > Hisham Amaral
> > 97 Wanderlodge 43'
> > Detroit 60 series engine
> > West Bloomfield, MI
> > 248-935-5390
> >
>
Quote this message in a reply
07-04-2009, 14:18
Post: #8
AC compressor bracket
For a quick fix you could
;remove a bolt ,one at a time then
;put in a snug washer beween bolt and bracket then
;weld the washer to the bracket.
may require a (washer girth) longer bolt?
Greg ofTim&Greg
94ptca

--- In WanderlodgeForum@yahoogroups.com, "Hisham Amaral" wrote:
>
> --- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor" wrote:
> >Greg
> The bracket is badly grooved due the vibration from the engine and the
overtensioning of the belts by the so call tecks. It would take a good deal of
welding and machineing to correct the condition I have. I would be much better
off to replace the part and have the assembly done correctly the first time,
like you said use shoulder belt, lock washer and lock tite.
>
> Thank you and happy 4th of July.
> Hisham Amaral
> > 97 Wanderlodge 43'
> > Detroit 60 series engine
> > West Bloomfield, MI
> > 248-935-5390
>
>
>
>
> > weld the holes up and redrill. Replace the bolts with ones with no thread
near the wrench end (no thread thru bracket). Bolt shoulder has larger dia. the
thread is what is cutting the bracket during vibration. It was probably removed
prior and the tec did not replace the lockwasher or use loctight
> > Greg ofTim&Greg
> > 94ptca
> >
> > --- In WanderlodgeForum@yahoogroups.com, "Hisham Amaral"
wrote:
> > >
> > > I am having a problem with my Engine A/C compressor bracket the holes
became ege shape and throwing belts. Does anyone have a fix or is the
replacement bracket available anywhere?
> > >
> > > Hisham Amaral
> > > 97 Wanderlodge 43'
> > > Detroit 60 series engine
> > > West Bloomfield, MI
> > > 248-935-5390
> > >
> >
>
Quote this message in a reply
07-09-2009, 16:44
Post: #9
AC compressor bracket
To fix my a/c bracket I took it to a machine shop that bored the engine bracket
holes and the a/c bracket holes to a size that would clean up the hole (so they
were round once again.) They then built a new center shaft to fit the new, over
sized holes. They also made two thick washers for the end of the shaft. If I
remember right it cost me $120 a couple of years ago.

Some discussion about the design of the bracket. I believe BB designed this
massive bracket and expected the massive size of the shaft to withstand the
vibration wear of the engine. It did not work on my rig. After less than 40k
miles the bearings were out on the compressor. At 50k I did the repair. I too
found all the holes and shaft egg shaped.

I believe that the an improvement would be to tighten the "ears" on the bracket
by tightening the bolts at the end of the shaft. (Maybe that was the intention
of the design???) In any case when I reassembled my repaired bracket I tighten
the ear as firmly as I could so that the clamping action of the ears on the
engine bracket would minimize the wear on the shaft. If it could be tightened
enough, after adjusting the belt tension, there would be no relative motion
between the two brackets and the shaft, eliminating wear.

One comment: I wish I had removed the gusset from under the two "ears". That
way I could have more easily tighten the bolts at the end of the shaft that
would have clamp the "ears" on the bracket to the engine side bracket. I didn't
remove that (approx. 5/16" x 3/4") gusset. I had to stand on a wrench to
tighten the ears after I got the a/c bracket adjusted. I imagine a significant
portion of the clamping force is going into bending the ears around the gusset
rather than clamping the ears to the engine bracket. Now, I believe the bracket
is tightened as if it were one piece, rather than one support and one pivot.

Sorry for the long soliloquy. It's a complicated issue relating to what I think
was either a design problem or an incorrect BB fabrication/installation on my
bus.

Eric Perplies
96' 42' WBWL
currently in Lolo, MT
Quote this message in a reply
07-12-2009, 00:52
Post: #10
AC compressor bracket
--- In WanderlodgeForum@yahoogroups.com, "Eric Perplies" wrote:
>Eric

Did you have the machine shop make a new bushing and increase the bolt dia. to
next size? If so please advise, my plans are to machine the brackets and remake
the bushing to mate with the overisze brackets thus removeing the side play and
also to add a stiffer washer at each end to eleminate the axial inboard rotation
and eleminate the ege shop that we end up with.
The design intent is to allow rotation but they did not understand the amount of
vibration diesels can input on loose bushing.

Hisham Amaral
97 Wanderlodge
W. Bloomfield MI.
dukeflyer@...
> To fix my a/c bracket I took it to a machine shop that bored the engine
bracket holes and the a/c bracket holes to a size that would clean up the hole
(so they were round once again.) They then built a new center shaft to fit the
new, over sized holes. They also made two thick washers for the end of the
shaft. If I remember right it cost me $120 a couple of years ago.
>
> Some discussion about the design of the bracket. I believe BB designed this
massive bracket and expected the massive size of the shaft to withstand the
vibration wear of the engine. It did not work on my rig. After less than 40k
miles the bearings were out on the compressor. At 50k I did the repair. I too
found all the holes and shaft egg shaped.
>
> I believe that the an improvement would be to tighten the "ears" on the
bracket by tightening the bolts at the end of the shaft. (Maybe that was the
intention of the design???) In any case when I reassembled my repaired bracket
I tighten the ear as firmly as I could so that the clamping action of the ears
on the engine bracket would minimize the wear on the shaft. If it could be
tightened enough, after adjusting the belt tension, there would be no relative
motion between the two brackets and the shaft, eliminating wear.
>
> One comment: I wish I had removed the gusset from under the two "ears". That
way I could have more easily tighten the bolts at the end of the shaft that
would have clamp the "ears" on the bracket to the engine side bracket. I didn't
remove that (approx. 5/16" x 3/4") gusset. I had to stand on a wrench to
tighten the ears after I got the a/c bracket adjusted. I imagine a significant
portion of the clamping force is going into bending the ears around the gusset
rather than clamping the ears to the engine bracket. Now, I believe the bracket
is tightened as if it were one piece, rather than one support and one pivot.
>
> Sorry for the long soliloquy. It's a complicated issue relating to what I
think was either a design problem or an incorrect BB fabrication/installation on
my bus.
>
> Eric Perplies
> 96' 42' WBWL
> currently in Lolo, MT
>
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