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  #1  
Old 10-03-2003, 08:01 AM
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Join Date: Feb 2003
Location: rural chicagoland
Posts: 165
what did I do wrong?

Good morning

It appears I need to learn a little something of changing fuel filters.

I repalced my cruddy fuel lines ( leaking ) and decided to replace the fuel filter ( Main ) after I did a diesel purge.

Leak of diesel came from the top of the bolt. So I wait days for the local dealer to get me the rubber ring for the bolt as well as the copper seal ring . Replaced them both and yesterday as I look under the bonnet I see that this did not solve the problem.

When I replaced both O ring and seal ring I cleaned bolt - I hand tightened the main filter then tightened the bolt- and I even primed the main filter seal ring with diesel - still I have diesel pooling on the main filter housing

Anyone care to instruct on what I did wrong?

Please and thanks

Have a great weekend

Peace

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nibiru
82 300TD- diggin it
Ich habe Dinge gesehen, die ihr Menchen niemal glauben würdet
Gigantische Schiffe, die brannten, draußen vor der Schulter des Orion
Und ich habe C-beams gesehen, glizernd im Dunkel, nahe dem Thannhäuser-Tor
All diese Momente werden verloren sein....in der Zeit
so wie...Tränen im Regen
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  #2  
Old 10-03-2003, 12:28 PM
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Join Date: Jan 2000
Location: PA
Posts: 5,440
Nibiru,

This is a common problem caused by replacing the filter when it doesn't need to be replaced.

Try tightening the bolt more. If this doesn't work, you may have to replace the filter housing.

P E H
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  #3  
Old 10-03-2003, 12:36 PM
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Join Date: Sep 2001
Location: central Texas
Posts: 17,277
PEH, so how does a really frugal person determine when a filter needs to be replaced....?
and DON"T tell me when it strands you on the side of the road...
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  #4  
Old 10-03-2003, 01:57 PM
Charlie Mitchel
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Filter:

PEH the man has a problem. Can we help him solve it or do we just "Kick him when he's down?"
Not sure the filter or line's are tight enough. Check them. I have had a filter repture. And just replaced it.
Some of us beleive in "previntive maintaince."
Charlie
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  #5  
Old 10-03-2003, 02:09 PM
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Posts: 5,440
Leather,

You got it, when the engine stops running or has a noticible power loss. That's when I replace mine. Its such a simple roadside fix, its no problem to me.

I think I have an algae problem in the one SD. It plugs it's filters much more often than the other SD. I tried to get some algaeside locally but haven't found any, maybe its not a popular product in the north.

Going to AZ and NV soon, maybe I can find some there or on the way.

P E H
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  #6  
Old 10-03-2003, 02:37 PM
Rick Miley's Avatar
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Join Date: Jun 1999
Location: Land O Lakes, FL
Posts: 3,086
PEH, here's what you need: BioBor BoatUS has stores in Maryland, but none in PA. Their site has a store locator that you could use to find stores along your route.
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  #7  
Old 10-03-2003, 03:19 PM
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nibiru

Been there, done that. That tightening bolt on the secondary filter takes a lot of torque to seal it against the pressure of the IP. Tighten it up some more, you’ll be fine.
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  #8  
Old 10-03-2003, 03:27 PM
Crowe's Avatar
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Location: Atlanta, GA
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I would agree with Toblin. You need to tighten it some more. I had the same leak on my 300SD and thought I had the bolt tight enough. Just a little more torque and no more leak.
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  #9  
Old 10-03-2003, 03:44 PM
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Location: rural chicagoland
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thanks youz guyz:

I thoughht that might be the case - just wanted to consult the experts in case I may crack the aluminum housing.

ugly day here - I am spending the day trying to fix the Auto Climate buttons and investigating if I can handle the lack of cruise control operation myself with out going to GDL

Tomorrow I will tighten up the bolt.

Peace all and thanks

have a great weekend
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nibiru
82 300TD- diggin it
Ich habe Dinge gesehen, die ihr Menchen niemal glauben würdet
Gigantische Schiffe, die brannten, draußen vor der Schulter des Orion
Und ich habe C-beams gesehen, glizernd im Dunkel, nahe dem Thannhäuser-Tor
All diese Momente werden verloren sein....in der Zeit
so wie...Tränen im Regen
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  #10  
Old 10-03-2003, 03:54 PM
Registered User
 
Join Date: Feb 2003
Location: rural chicagoland
Posts: 165
thanks youz guyz:

I thoughht that might be the case - just wanted to consult the experts in case I may crack the aluminum housing.

ugly day here - I am spending the day trying to fix the Auto Climate buttons and investigating if I can handle the lack of cruise control operation myself with out going to GDL

Tomorrow I will tighten up the bolt.

Peace all and thanks

have a great weekend
__________________
nibiru
82 300TD- diggin it
Ich habe Dinge gesehen, die ihr Menchen niemal glauben würdet
Gigantische Schiffe, die brannten, draußen vor der Schulter des Orion
Und ich habe C-beams gesehen, glizernd im Dunkel, nahe dem Thannhäuser-Tor
All diese Momente werden verloren sein....in der Zeit
so wie...Tränen im Regen
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  #11  
Old 10-03-2003, 05:43 PM
240Joe's Avatar
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Join Date: Nov 2000
Posts: 525
I've had the same leak but I solved it my putting a very light skim of silicon sealer on the ring and washer.

I know some people are against this method, but I have started to use it anywhere I have something that is trying to contain a fluid...and it works great.

I had a neighbor with VW diesels and I once asked him when he changed his fuel filters and he said "I've never had to change one". And he put mega miles on those little diesel rabbits. Therefore, PEH isn't alone in his methods.



Joe
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  #12  
Old 10-03-2003, 06:01 PM
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Join Date: Feb 2003
Location: rural chicagoland
Posts: 165
Yup I primed the main filter gasket with a finger dip of diesel

I figured it the same as when you change a spin on oil filter Plus it said so in a web page I checked out.

Careful - It is leaking at the top bolt between the bolt head and the copper ring.

I wont crank on it but I will tighten more- when I tightened ( spin on the filter first ) before I hand tightened to my hand max and then with a 22mm wrench on the bolt head- I noticed that when I tightened the bolt - the filter would move a fraction in the direction I was turning - clockwise- so I figured there was plenty of diesel film on the gasket - so at least I primed that Ok - I Guess

I managed to fix the fuel sending unit- Just a solder on one of the stainless lines

I shall report the results in a mo- cool I might have just saved myself 85 beans. By the by- GermanStar has the best price on the VDO sending gauge

Peace
__________________
nibiru
82 300TD- diggin it
Ich habe Dinge gesehen, die ihr Menchen niemal glauben würdet
Gigantische Schiffe, die brannten, draußen vor der Schulter des Orion
Und ich habe C-beams gesehen, glizernd im Dunkel, nahe dem Thannhäuser-Tor
All diese Momente werden verloren sein....in der Zeit
so wie...Tränen im Regen
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  #13  
Old 10-03-2003, 06:33 PM
Registered User
 
Join Date: Feb 2003
Location: rural chicagoland
Posts: 165
Fixed the fuel sending unit

Seems I can do something correct the first time

pulled the fuel sending unit out of the tank yesterday. dark and when I opened the tube I saw a thin wire fishing round

Looked at it today and said " I can fix that"

Grabbed a pencil style solder iron from Radio Shack and some light duty rosin core

Not too bad a job once you looked at it and figure that the wire broke off the contact point

just reinstalled and gauge now reads with no bouncing.

cool board

Thanks

Peace
__________________
nibiru
82 300TD- diggin it
Ich habe Dinge gesehen, die ihr Menchen niemal glauben würdet
Gigantische Schiffe, die brannten, draußen vor der Schulter des Orion
Und ich habe C-beams gesehen, glizernd im Dunkel, nahe dem Thannhäuser-Tor
All diese Momente werden verloren sein....in der Zeit
so wie...Tränen im Regen
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  #14  
Old 10-04-2003, 12:40 PM
Wes Bender's Avatar
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Join Date: Mar 2001
Location: Alpine, AZ / Green Valley, AZ
Posts: 733
nibiru -

If someone had previously scarred the top of the filter housing, the copper washer may not seat properly. That was the case on one of my filter housings. I removed the filter and the bolt and very carefully smoothed the area where the copper washer rests.
Leak fixed.

Just my $.02.

Wes

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