Diagnosing "tap tap" / rattling noise - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old May 8th, 2015, 10:52 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
Diagnosing "tap tap" / rattling noise

I never thought I would start up one of these posts, but here I am. My 90 is RHD, has a 3~3.5 inch lift, RTE radius arms, nitrocharger externally mounted shocks, swampers, but pretty much stock everything else.

At slow speeds, under 5mph, and usually while braking, my front end starts making a loud, definite, "tapping" or "knocking" noise.

There is no shake in the steering wheel.

I've attached a video with annotations marking on the onset of the noise.

I plan to take more videos of the driveshaft and tcase areas as well.
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old May 9th, 2015, 11:13 AM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
sorry, having problems with the video uploading...
Reply With Quote
  #3  
Old May 9th, 2015, 11:44 AM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
one more time
Attached Files
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old May 9th, 2015, 12:04 PM
Nomar's Avatar
Nomar
Status: Offline
Jeff B
RR HNTR,RR LWB Tdi
Member
 
Join Date: Aug 2004
Location: Central,Virginia
Posts: 4,288
Registry
I have no idea yet what your noise is but that is a good video....how did you make it?
How and where did you attach your camera?

I also liked your intro; reminded me of those old Playboy letters...."I never thought it would happen to me, but there I was..." LOL

.
__________________


Real Rovers have round headlights!
Rent my
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
!
Just a few miles from 4x4 access!
Reply With Quote
  #5  
Old May 9th, 2015, 12:35 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
thanks jeff, the camera was attached to my front bumper via copious amounts of scotch tape.

jeff (other jeff), the sound does not go away when applying the brakes. It appears when I decelerate while coasting under any condition under 5mph.

The only time I can make it disappear is when I press the accelerator.
Reply With Quote
  #6  
Old May 9th, 2015, 12:38 PM
Jonesy's Avatar
Jonesy
Status: Offline
Craig
87 D110 (Ruby)
Member
 
Join Date: Dec 2011
Location: Leesburg, VA
Posts: 4,445
Registry
driveshaft Ed? Take off front and see...then take off back (put front back on )
__________________
"The difference between stupidity and genius, is that genius has its limits." - Albert Einstein
Reply With Quote
  #7  
Old May 9th, 2015, 12:42 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
good point jonesy. I am running a brand new tom woods double cardan (as of last fall) but maybe it's got problems...
Reply With Quote
  #8  
Old May 9th, 2015, 01:42 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
driveshaft video 1
Attached Files
Reply With Quote
  #9  
Old May 9th, 2015, 01:54 PM
madcowdungbeetle
Status: Offline
Carter
1994 D90 on 37s supreme balla style
Member
 
Join Date: Jan 2006
Location: Charlotte, NC
Posts: 1,358
Registry
It sounds to me like a CV popping. I've gotten my sister's Disco to make a very similar sound and it was the CV.

Only other thing that comes to mind is a U-Joint in the driveshaft binding under low-load.
__________________
<
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
>
Reply With Quote
  #10  
Old May 9th, 2015, 02:04 PM
Overlander's Avatar
Overlander
Status: Offline
mark kellgren
in between D's in an 04 D2
Member
 
Join Date: Mar 2006
Location: Charlotte, NC
Posts: 6,531
Registry
Tom woods center bearing in the cardon beeds to be greased often or it will fail.
__________________
Mark Kellgren
KM4BOR

ISIL and al qaeda can go F*ck themselves...
Reply With Quote
  #11  
Old May 9th, 2015, 02:06 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
driveshaft video #2
Attached Files
Reply With Quote
  #12  
Old May 9th, 2015, 02:41 PM
Sergeant_V's Avatar
Sergeant_V
Status: Offline
Abel Villesca
1995 D-90 ST
Member
 
Join Date: Nov 2004
Location: Albuquerque, NM, US
Posts: 419
Quote:
Originally Posted by Overlander View Post
Tom woods center bearing in the cardon beeds to be greased often or it will fail.
My thoughts exactly. Center bearing failure.
Reply With Quote
  #13  
Old May 9th, 2015, 03:40 PM
MUDSUX's Avatar
MUDSUX
Status: Offline
Forrest
Like my Tatas?
Member
 
Join Date: Jul 2009
Location: Orlando, Fl. US
Posts: 1,641
Registry
Is it me or is that some oil spilling out of the drain plug at the end of the video?
__________________
MUDSUX

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

"It is the soldier, who salutes the flag, who serves beneath the flag, and whose coffin is draped by the flag that allows the protester to burn the flag"
Reply With Quote
  #14  
Old May 9th, 2015, 11:45 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
Forrest, I'm afraid you're right. There is some kind of leak coming from the bellhousing hole. it's a small leak, but it's noticeable.

I replaced my rear main seal last year with a good dowty seal, but it seems that it is already leaking. Will have to replace it.

I'll check both CV's and the centering ball of the front driveshaft tomorrow morning. I'll also check the other suggestions that folks have made. I'm eager to get rid of these noises.
Reply With Quote
  #15  
Old May 17th, 2015, 08:20 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
1. Checked driveshaft. Greased all grease points including center bearing with needle adapter. Seemed alright.

2. Checked CV's. Right CV circlip had popped off under the cap and the CV was "pushed" into the drive flange, flush with the surface of the drive flange. Also noticed leaking inner hub seal on same side. Will fix both and see what occurs.

3. Found that I have a leaking injection pump. I've ordered a set of 200tdi timing tools and will remove the IP for service.

Not sure about the leaking rear main seal. It's difficult to tell if the drip is actually coming from inside the bellhousing or if it's actually leaking diesel fuel dripping off the bottom of the bellhousing.

Either way, will rectify one after another.
Reply With Quote
  #16  
Old June 8th, 2015, 01:06 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,523
Registry
Did some rover work over the weekend.

I found the source of the tapping. Those who mentioned the CV were correct. The retaining circlip on the outer CV had come off when I removed the rubber axle end cap. When I removed the cap, the outer CV joint was actually flush with the drive flange. After removing the stub axle, I found that the Front Stub Axle Bush (FRC4319) had actually come out of the stub axle and jammed itself between the stub and the CV, so the CV was actually cocked at an angle. Not good.

I pressed the bushing back into the stub, reassembled all with new gaskets and repacked bearings, replaced the circlip, and all is well again.

All suggestions mentioned in this thread were appreciated! Thanks again for your input.

(note for the future: the purpose of the circlip includes retaining the outer CV so it doesn't let the bushing pop out!)
Attached Thumbnails
Click image for larger version

Name:	FRC4320.jpg
Views:	193
Size:	30.9 KB
ID:	122557  
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rattling / Banging Engine Noise OahuDefender Defender Technical Discussions 3 May 16th, 2013 05:59 AM
Crazy Rattling Noise From Exhaust/Underneath Wolf Fabrication Defender Technical Discussions 14 April 6th, 2009 07:12 PM
Diagnosing D110 Climate Controls 61rover Defender Technical Discussions 6 September 27th, 2007 12:13 PM
Need help diagnosing electrical issue cgalpin Defender Technical Discussions 22 January 25th, 2007 08:53 PM


All times are GMT -5. The time now is 03:08 AM.


Copyright