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Topic: Hydraulic Pump Tensioner making noise (Read 1961 times) previous topic - next topic

Re: Hydraulic Pump Tensioner making noise

Reply #25 –
FWIW,  Ours has a K060445 belt and there is appx 9/16" between the idler roller and pump pulley.
Dave and Kelli
1997 U295 40' Build #5188 CSGI
1995 U240 36' Build #4621 SBID-SOLD
2006 Jeep Wrangler Rubicon

Re: Hydraulic Pump Tensioner making noise

Reply #26 –
Hi Dave,
  Good to hear from a '95 U-240 owner,  THANK YOU for the measurement and comment.  I measured mine  just now and I have a good 1" with new K060445 Gates.  I wounder how much the tensioner oscillates normanly? I will post a video link in little while.

Pat,
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653

Re: Hydraulic Pump Tensioner making noise

Reply #27 –
How old is the tensioner? The DO wear out.

http://www.youtube.com/watch?v=Hza9Ulhe4DQ
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Hydraulic Pump Tensioner making noise

Reply #28 –
Hi Brett
  the tensioner is new less 3k miles today.  I am going to post 3 videos of the tensioner.  I don't believe that I have ever seen either of mine stand still.  The alternator belt tensioner is more stable, but still have some movement.  The videos will be at 550 engine RPM.  A john deere man told me today that they all move some. 
  Video 1

  Video 2

  Video 3
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653

Re: Hydraulic Pump Tensioner making noise

Reply #29 –
Check the runout you have in your crank pulley in video #2. With the engine stopped, turn it over with a socket and long breaker bar with a dial indicator on the pulley. A piece of chalk would also do with the engine running if you promise not to lose an arm. Your pump pulley looks fine.

Yes, they all move some. Your does not seem excessive especially considering what the crank pulley is doing.

Our RAV4 tensioner is going strong at 240K and our MBZ ML320 has 210K and also working fine. 120K on the Detroit tensioner.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Hydraulic Pump Tensioner making noise

Reply #30 –
Looks like what may be a harmonic balancer behind the crank pulley. It seems to be spinning without any movement.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Hydraulic Pump Tensioner making noise

Reply #31 –
Yup, either harmonic balancer or the crank pulley is not centered (lots of run-out). Can certainly see run-out in the pulley.

As I recall, the mounting holes for that pulley allow some realignment.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Hydraulic Pump Tensioner making noise

Reply #32 –
Quote from: wolfe10 –
Yup, either harmonic balancer or the crank pulley is not centered (lots of run-out). Can certainly see run-out in the pulley.

As I recall, the mounting holes for that pulley allow some realignment.
Brett,
I went to full big screen and played it a dozen times trying to keep other parts in view as the balancer and pulley were spinning. Like to see a close up photo of the pulley showing the mounting fasteners. It almost looks like it has been damaged some how as the runout does not seem even on the pulley. Perhaps as the engine was installed or removed the pulley was hit. Seems tough to recenter the existing pulley but wish I were closer to see it better.

Pat, nice job posting the short videos!
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Hydraulic Pump Tensioner making noise

Reply #33 –
Good Morning All.
  Spring is coming to East Texas!
  I agree with Pierce, I think the crank pulley looks like it is not round or something.  I have never messed with it.  He are some new pics with shorter belt(k060445).  If the roller hits the pulley with this much clearance then I will ../././.>?>?

Thanks for all the help.
Pat,
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653

Re: Hydraulic Pump Tensioner making noise

Reply #34 –
Pat,

Remove the belt.
Loosen the 4 bolts holding that pulley.

See if there is enough play to re-center the pulley. I believe you will find you DO have a small amount of play.

If so, mostly tighten the bolts-- loose enough that you can tap the pulley to re-center it.

Start the engine and move a piece of chalk (yes carefully) closer and closer to the pulley until it marks the spot with the most run-out.  Shut down the engine and with something soft like a 2X4" tap the pulley in the direction needed.  Repeat until no run-out.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Hydraulic Pump Tensioner making noise

Reply #35 –
As Brett says, "carefully." No need to have an "Isadora Duncan" incident :)

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Hydraulic Pump Tensioner making noise

Reply #36 –
Hi Pierce,
  do you know that your mail box is full?  I have tried to send you messages and it will not do it due to mail box full.  I want to talk with you about Antonio Geraldo.

Pat,
936-824-2714
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653

Re: Hydraulic Pump Tensioner making noise

Reply #37 –
Pat,

Did you ever resolve this/were you able to lessen the crank pulley run-out?
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020
 

Re: Hydraulic Pump Tensioner making noise

Reply #38 –
Hi Brett,

  I have not worked on that.  It has been real busy around here.  I will look at that soon.  Thanks for checking on me.

Pat,
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653