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Clunk Clunk What sound am I?

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Old Nov 5, 2008 | 01:43 AM
  #1  
DiscoMike2003's Avatar
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Default Clunk Clunk What sound am I?

Got my disco from Maryland safely drove across the united states with breaks in Oxford Mississippi and Dallas texas.
Only issue other than the gas mileage in the city (LOL) is the front flange on the transfer case seems to have some play.
SOme of this may be the known defective fron ujoints.

WHen adding throttle or letting off in the switch from acceleration to drag in the driveline there is a clunk mabye related to this.

Any ideas would be good, i checked the fluid its dirty but full and shall be changed this week.

I'll post pics of my trip shortly.
-michael-
 
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Old Nov 5, 2008 | 09:16 PM
  #2  
tacomatech's Avatar
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Default RE: Clunk Clunk What sound am I?

These transfer cases develop a clunk quite often. It is due to excessive play between the drive gear and driven gear. You could either have it rebuilt(chances are it will still clunk afterward), or you could spring for a new unit. Our shop just did two last month.
 
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Old Nov 10, 2008 | 09:01 PM
  #3  
DiscoMike2003's Avatar
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Default RE: Clunk Clunk What sound am I?

Does that mean its about to break or is it ok and just change the fluid out??
 
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Old Nov 11, 2008 | 11:00 PM
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Default RE: Clunk Clunk What sound am I?

You can change the fluid out. It may not break right away, but it will only get worse over time. This can also result in the u-joints getting hammered, as well. I have seen these from mild to severe clunking, so you should have time to figure out your plan of action.
 
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Old Nov 12, 2008 | 07:40 AM
  #5  
Disco Mike's Avatar
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Default RE: Clunk Clunk What sound am I?

First, have you had the 2 u-joints in the double cardon rebuilt, if not do that ASAP.
How many miles on your truck and when was the tranny last serviced, how often do you get your 2 drive shafts serviced/greased?
 
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Old Nov 12, 2008 | 10:59 AM
  #6  
DiscoMike2003's Avatar
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Default RE: Clunk Clunk What sound am I?

Just bought it so the service is unknown other than i got under the vehicle befor driving off and wiggled things.
I did notice that the double ujoints do not have the zerg fittings but the front one does adjacent to the front differential.
I need to drain and fill the diffs and transfer case which is weeping fluid.
Vehicle has 82k miles and doesn't appear to have been used off road just in the city by a mom or something.
Great fun to drive thank goodness for my decision's proximity to the gas price drop.
 
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Old Nov 12, 2008 | 03:19 PM
  #7  
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Default RE: Clunk Clunk What sound am I?

Get those u-joints and the centering ball kit replaced ASAP.
Here is a list of stuff you should do to bring the truck current.


This is the parts list for a 60,000 mile service or a high mileage used truck, the way I do it.
1 Oil filter, K&N 3001 or Mobil 1- 301
1 Air filter
6 Qts of engine oil
12 Qts of ATF
7 Qts of 80/90W synthetic gear oil, 85W/140 for HD use
3 Pints of synthetic Brake fluid
2 Qts of synthetic Power steering fluid
2 Gallons of OAT, orange coolant
1 Bottle of Lucas Power Steering additive
1 Bottle of Lucas Transmission additive
1 Can of Spray Carb. Spray
1 Can Of Brake cleaner
8 Spark Plugs, I use Bosch Platium Plus 4's
1 Set of Magnacor 8mm plug wires
1 Serpentine belt
2 Bottles of SeaFoam gas additive
1 T/Stat
Hoses and belts, as necessary

60,000 Mile Service or Major Service for High Mileage Used Vehicle just purchased

Bleed the brakes
Flush and change the power steering fluid adding one bottle of additive
Service the tranny adding one bottle of additive
Change the coolant and t/stat
Do an engine flush before changing the oil
Do an induction cleaning
Clean the throttle body
Add fuel additive to full gas tank
Change both of the diffs fluid
Change the t/case oil
Replace the plugs and wires
Replace the air filter
Lube all the drive shaft grease fitting including the 2 slip shafts
Do full inspection of brakes, hoses, bushings etc.

Hopefully I didn't leave anything out.
 
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Old Nov 12, 2008 | 10:40 PM
  #8  
tacomatech's Avatar
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Default RE: Clunk Clunk What sound am I?

Nah, that pretty much sums it up.
 
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Old Nov 13, 2008 | 04:43 PM
  #9  
DiscoMike2003's Avatar
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Default RE: Clunk Clunk What sound am I?

Centering Ball?????
Haven't heard of that one before.
Google TIme....
 
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Old Nov 13, 2008 | 04:57 PM
  #10  
DiscoMike2003's Avatar
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Default RE: Clunk Clunk What sound am I?

Baller found this Link:

http://static.scribd.com/docs/tkatf9...IAL_VIEW=width

Centering Ball being the part inbetween the two rearward propshaft bearings in the cage assy.
 
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