Transmission damper failure

Topic: Transmission damper failure (Read 3298 times) previous topic - next topic

Re: Transmission damper failure

Reply #25 – October 21, 2019, 11:37:03 am

Quote from: bdale – October 21, 2019, 11:24:10 am

This might be a completely different issue but the symptoms sound a lot like the well documented P3 Carrier Bearing issue that late 90's FT's had. It was a design issue with a recall that expired a long time ago. Ours had to be fixed more than 10 years ago, outside of the recall period. You might read through some of the threads on that issue. Here's just one of many examples:

Replaced P-3 Carrier and Bearings

What is the length of your coach? So far the problem seems to be with 36' coaches.

Re: Transmission damper failure

Reply #26 – October 21, 2019, 11:38:33 am

Craneman, that is exactly what Stewart & Stephens the Allison dealer said : P3 Carrier Bearing
YES ours is a 36" foot.

Re: Transmission damper failure

Reply #27 – October 21, 2019, 01:23:13 pm

Quote from: craneman – October 21, 2019, 11:37:03 am

What is the length of your coach? So far the problem seems to be with 36' coaches.

Mine is 40'.

Re: Transmission damper failure

Reply #28 – October 21, 2019, 01:32:52 pm

40 for my 1999 U270. 82,000 miles indicated. I have no records. Wish I could figure out prior owner (S).

Re: Transmission damper failure

Reply #29 – October 21, 2019, 02:26:24 pm

Am I reading this correctly?-- is this a problem with 270 and 295 and NOT a problem with 320??
Clarification PLEASE!!!
Thanks
Chris

Re: Transmission damper failure

Reply #30 – October 21, 2019, 02:50:36 pm

I think it was any coach of that era with the Allison MD3060R transmission, regardless of trim level.

Re: Transmission damper failure

Reply #31 – October 21, 2019, 06:36:25 pm

Quote from: Chris m lang – October 21, 2019, 02:26:24 pm

Am I reading this correctly?-- is this a problem with 270 and 295 and NOT a problem with 320??
Clarification PLEASE!!!
Thanks
Chris

Chris,

All 320s of that era have the 4060R which didn't have the balancer.

Mike

Re: Transmission damper failure

Reply #32 – October 21, 2019, 06:54:13 pm

I got out my logbook today at the RV garage. This is what it costed on a hot day 6/12/18 Little Rock AR. American Shifty Corp. $416.65. Replaced seal new trans fluid, tightened nut . Harmonic balancer good. Still running good.
Give us updates on your situation.

Re: Transmission damper failure

Reply #33 – October 21, 2019, 07:17:41 pm

That's what I am hoping for, with luck it will not require the BIG repair since the vibration only started on the way down from Ohio on our "pilgrimage" to Nag/ MOT/Foretravel/Infinity/Xtreme
- The economy there is evidently booming according to my check book and credit cards!

Re: Transmission damper failure

Reply #34 – October 21, 2019, 10:31:29 pm

Looking back at the records for our coach, the previous owner noted vibration that cleared up above 60 mph. The "P3 bearing" was subsequently serviced by W.W. Williams in Brunswick, OH (~80,000 miles). The shop notes show the following was done.

"Checked driveline found output flange very loose. Disconnect driveline and remove output flange. Trans Dampner rear seal. Found spanner nut retainer broke and spanner nut backed off. Installed output bearing. Spanner nut and lock. Torque to spec. Install output flange, seal, dampner and driveline."

George

Re: Transmission damper failure

Reply #35 – October 22, 2019, 12:28:06 pm

Update on repair,have appointment at G and W diesel on Nov. 6th,will post results.

Re: Transmission damper failure

Reply #36 – October 22, 2019, 07:19:41 pm

Dave, did they give any idea if they'd have to drop the trans if a new bearing is required? From what I can tell it looks like there's a planetary around that bearing, is that right? Hopefully they can just tighten yours up, don't spare the Locktite!

Re: Transmission damper failure

Reply #37 – October 22, 2019, 08:02:15 pm

The service manager at Longview told me worst case is to replace bearing and carrier at $4K.Think we caught mine early because
of no extra vibration,just up and down play.

Re: Transmission damper failure

Reply #38 – October 23, 2019, 12:13:50 am

Checked mine today and it is fine as no movement in any direction, and I used abigger prybar to really put some leverage on it.
Now I most probably have jinxed myself and on way south in 3 weeks it will fail.
JohnH

Re: Transmission damper failure

Reply #39 – October 23, 2019, 12:26:12 pm

All this discussion created enough anxiety had the coach held over at the shop an extra day. No signs of any movement, abnormal wear or vibrations!p. Hoorah! Add in to the regular monitoring list as we go forward.

Re: Transmission damper failure

Reply #40 – October 23, 2019, 01:08:23 pm

Quote

Checked mine today and it is fine as no movement in any direction

How do you check these for movement? Thanks.
jor

Re: Transmission damper failure

Reply #41 – October 23, 2019, 01:46:22 pm

Copied this from first post:
with a 25" angled tip pry bar which he proceeds to insert between the chassis member and the transmission damper ( looks like a flywheel at the rear of the engine) the "flywheel" moves 3/16" with no real pressure and Keith says "hate to tell you, but you got a problem, possibly expensive"
There should be no play, he says to check this regularly especially in the 96/97 thru 2000 coaches.

Re: Transmission damper failure

Reply #42 – October 23, 2019, 02:03:17 pm

Rear of engine or rear of transmission where it attaches to the Yoke for the drive shaft/U joints?

Re: Transmission damper failure

Reply #43 – October 23, 2019, 06:58:56 pm

Quote from: wolfe10 – October 23, 2019, 02:03:17 pm

Rear of engine or rear of transmission where it attaches to the Yoke for the drive shaft/U joints?

It is on the transmission tail shaft.

Mike

Re: Transmission damper failure

Reply #44 – October 23, 2019, 08:00:10 pm

Maybe someone could post a photo of the dampener............. As Gary B. said in an old Yahoo post that the dampener was placed only on the "Unicoach" of 95 and later and not on any of the GV's as his 95 U280 did not have one installed.
Does anyone know of a GV with a dampener? Ours does not have one either................unless it was removed by a PO

Re: Transmission damper failure

Reply #45 – October 23, 2019, 08:34:17 pm

I worked for Foretravel as a tech during this time and don't remember any dampener on the Grand Villa but we did install them on the u270 and u295 coaches.

Re: Transmission damper failure

Reply #46 – October 23, 2019, 09:02:02 pm

It looks similar to the damper on the 8.3 engine only bigger,is at the end of the trans between the trans and driveshaft,someone
will post a picture but if you look there you'll know if you have one or not.

Re: Transmission damper failure

Reply #47 – October 23, 2019, 09:25:36 pm

Quote from: "Irish" – October 23, 2019, 01:46:22 pm

Copied this from first post:
with a 25" angled tip pry bar which he proceeds to insert between the chassis member and the transmission damper ( looks like a flywheel at the rear of the engine) the "flywheel" moves 3/16" with no real pressure and Keith says "hate to tell you, but you got a problem, possibly expensive"
There should be no play, he says to check this regularly especially in the 96/97 thru 2000 coaches.

I recall from a discussion of this issue some years back that there was a spec stated for allowable free play. (I think this was from S&S.) As I recall it was small, noticeable by eye but not zero. At that time I crawled under, did the check and noted a very small amount of play. Have periodically checked it over the subsequent 70K miles and nothing of concern. Anyone else remember this?

Of course now I'm afflicted with "automatic rough", and every sound, road texture change is noted. Guess I'll crawl under it tomorrow and see what's what.

Re: Transmission damper failure

Reply #48 – October 23, 2019, 10:24:19 pm

Here you go

We would unbolt the drive shaft, bolt it in between yoke and the drive shaft . Was a pain, took two people. Was really heavy and awkward.

Chris

Re: Transmission damper failure

Reply #49 – October 23, 2019, 11:13:24 pm

Heard that damper is oil filled, not solid steel like it looks.

Affiliate Notice