Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: Harry on April 14, 2020, 13:56:48

Title: Tricks of the Trade?
Post by: Harry on April 14, 2020, 13:56:48

Whew.  I am having a really difficult time trying to loosen a fitting on the main fuel line feeding the fuel injection pump.  This is the fitting at the line from the fuel pump at the tank (I expect) that connects to a rubber flex line that connects to the injection pump.  I removed the rubber flex line when I pulled the engine and I have a new line to replace it with now that the engine is installed.

The problem is that the hose fitting on the line from the fuel pump is absolutely frozen to the line.  I have soaked it with PB Blaster, Kroil ,etc. as well as added a lot of heat but it remains seized.  Part of the problem is that there is little or no surface to tap on the try to free it, and I'm afraid to twist it any harder for fear of kinking the steel line.

Assuming that I'm not the first victim of this situation, what are some tricks of the trade you might recommend for freeing this fitting?  (I'd like to not have to replace the line if I can avoid it.)

Thanks,
Harry

Title: Re: Tricks of the Trade?
Post by: Harry on April 14, 2020, 22:39:05

Heat finally worked, and back and forth loading on the fitting.  I placed a piece of aluminum between the fitting and the steering box, then carefully heated the fitting with a torch, watching it very carefully.  Finally it began to free.  I kept working it back and forth with lubricating oil and it eventually freed completely.  Thank goodness!

Title: Re: Tricks of the Trade?
Post by: AB on April 15, 2020, 15:47:11

I'm having the same difficulty but hesitant to use heat as I still have fuel in the line.  If I wanted to cut it off and add a new fitting.  What type of flaring tool is used?

Alan Bremer
Atlanta GA

Title: Re: Tricks of the Trade?
Post by: Harry on April 16, 2020, 16:54:10

I have no idea.  I also was concerned about the fuel but mine had set open for about 2 years so I was satisfied that any fuel in the line would have been gone.  When I applied the heat, it was directly on the fitting while I was trying to turn the fitting with a wrench.  I was elated, to say the least, when it freed.  I had to keep working it even after then to get it completely free where it could easily be turned by hand.

Good luck with yours!

Title: Re: Tricks of the Trade?
Post by: Benz Dr. on April 16, 2020, 17:18:19

I use a little bit of anti seize on those connections to prevent those sorts of problems.

Title: Re: Tricks of the Trade?
Post by: Harry on April 16, 2020, 19:16:00

Super idea.

Title: Re: Tricks of the Trade?
Post by: Pawel66 on April 16, 2020, 19:27:23

Quote from: Benz Dr. on April 16, 2020, 17:18:19

I use a little bit of anti seize on those connections to prevent those sorts of problems.

What shall I use for anti-seize, what is the best? I failed to find anything specific called "anti-seize" on the market...

Title: Re: Tricks of the Trade?
Post by: WRe on April 16, 2020, 21:11:24

Hi,
anti seize is a assembly paste or fitting grease on basis of copper, ceramic or graphite, e.g. Loctite LB8008 or Weicon Anti Seize. Alternatively you can use copper or ceramic paste.
...WRe

Title: Re: Tricks of the Trade?
Post by: Pawel66 on April 16, 2020, 22:11:00

Thank you!

I have copper grease in the garage...

I will try to locate that Loctite product.