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CATA injector seals - conflicting info?

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tdi_allan

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2010 Touareg TDI
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Discussion starter · #1 ·
Gathering tools and parts to replace the injector seals on my 2010 Touareg TDI with the CATA engine. The seals I received from FCP Euro (VW part #059 130 519 B) do not have a tapered edge - I was led to believe that the proper seals for this engine are tapered and need to be installed with the narrower part of the seal toward the engine. Looking up the Elring seal kit that has the tapered edge (934.320) on various part supplier sites indicate that the tapered seals are not specified for this engine. Any advice? Thanks!

- Allan
 
#2 ·
tdi_allan said:
Gathering tools and parts to replace the injector seals on my 2010 Touareg TDI with the CATA engine. The seals I received from FCP Euro (VW part #059 130 519 B) do not have a tapered edge - I was led to believe that the proper seals for this engine are tapered and need to be installed with the narrower part of the seal toward the engine. Looking up the Elring seal kit that has the tapered edge (934.320) on various part supplier sites indicate that the tapered seals are not specified for this engine. Any advice? Thanks!

- Allan
Click to expand...
The CATA has square seals. The CNRB are tapered, at least the ones I've done.
 
#4 ·
I did my seals and they were square. Are you also replacing the O-rings and the injector tension plates? I recommend you do that. You also need to clean the seats without allowing all the crap to get in the cylinder. That was the the most PITA for me. I used a wet/dry vacuum to suck the particles out and then did a wet clean of the seats using a injector bore brush I got on Amazon.
 
Discussion starter · #5 ·
Lars_NM said:
I did my seals and they were square. Are you also replacing the O-rings and the injector tension plates? I recommend you do that. You also need to clean the seats without allowing all the crap to get in the cylinder. That was the the most PITA for me. I used a wet/dry vacuum to suck the particles out and then did a wet clean of the seats using a injector bore brush I got on Amazon.
Click to expand...
I will be replacing the o-rings on the injector and return lines, and am designing and 3D printing an adapter for my shop vac to suck out the debris. I was not planning on replacing the tension plates, now you have me thinking about that. The manual does not specify that the tensioning bracket be replaced when re-installing the existing injector (see attached screenshot), but it seems like a good idea just to be sure.

Image
 
#6 ·
tdi_allan said:
I will be replacing the o-rings on the injector and return lines, and am designing and 3D printing an adapter for my shop vac to suck out the debris. I was not planning on replacing the tension plates, now you have me thinking about that. The manual does not specify that the tensioning bracket be replaced when re-installing the existing injector (see attached screenshot), but it seems like a good idea just to be sure.

View attachment 270809
Click to expand...
the third bullet says:
Replace the following components ...each time an injector is replaced: "tensioning bracket"
I wouldn't take a chance on that. I noticed that the old tensioning brackets had flattened out compared to the new ones. If you have a seal fail it could do allot of damage and be a pain to fix.

Why are you redoing the seals?
 
Discussion starter · #7 ·
Lars_NM said:
the third bullet says:
Replace the following components ...each time an injector is replaced: "tensioning bracket"
I wouldn't take a chance on that. I noticed that the old tensioning brackets had flattened out compared to the new ones. If you have a seal fail it could do allot of damage and be a pain to fix.

Why are you redoing the seals?
Click to expand...
I interpreted the second bullet as applicable to what I am doing, removing and then reinstalling the injectors, and those instructions did not indicate replacement of the bracket. I have heard and smelled the telltale signs of a compromised seal and am replacing them all "while I am in there." Your advice to replace the brackets is wise, and I will be doing so.
 
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