O Rings

falkirkjohn · 28th April 2015, 17:47

I have a 55 plate CDTI should i change the O rings there doesn't seem to be any leaks. EGR PCV has been done, need to do inline thermostat.

Thanks in advance

John

T-Cut · 28th April 2015, 18:15

Yea, do it. They'll be in a worse state than you expect. And it will make you feel better.

TC

ako2k7 · 4th May 2015, 16:32

Is there a guide for replacing these without removing the bumper ?

T-Cut · 4th May 2015, 16:37

I seem to remember wullie wrote one.

TC

ako2k7 · 4th May 2015, 16:38

Quote:

Originally Posted by T-Cut

I seem to remember wullie wrote one.

TC

Thanks, found it

Jules · 4th May 2015, 17:37

All the one's we've seen where the o rings have been replaced from the top have not need seated properly and sooner or later leak again

Arctic · 4th May 2015, 17:56

They certainly need to be pushed fully home and a little lubricant will help that, make sure the top lip is flush the top of the inlet on the intercooler as here below, and it should be ok in my opinion, I have yet to see any move that have been fully pushed home Arctic

Jules · 4th May 2015, 18:04

Agree with that Steve.

If folk really have to do the job without removing bumper, I suggest they use the middle groove mod as per your pictures to move the bottom seal upwards.

At least then it can't fall off while inserting the elbow.

Arctic · 5th May 2015, 08:13

Quote:

Originally Posted by ako2k7

Is there a guide for replacing these without removing the bumper ?

Hi Richard
How did you get on doing the O-rings was they fully pushed home ? also link below if you have not done the O-ring change yet

http://www.the75andztclub.co.uk/foru...d.php?t=146646

marinabrian · 5th May 2015, 08:34

I am with Jules on this one

The easiest, and by far the most reliable method it to remove both the bumper, and the nearside headlight.

Once the elbow is reinstalled with the new O rings, a self tapping screw with silicone sealant applied through the outer sheath of the intercooler housing between the O rings, should ensure a fit and forget solution

Brian

28th April 2015, 17:47	#1
falkirkjohn Regular poster MG ZT Cdti 135+ Join Date: Feb 2015 Location: Falkirk Posts: 42 Thanks: 4 Thanked 0 Times in 0 Posts	O Rings I have a 55 plate CDTI should i change the O rings there doesn't seem to be any leaks. EGR PCV has been done, need to do inline thermostat. Thanks in advance John

4th May 2015, 17:37	#6
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	All the one's we've seen where the o rings have been replaced from the top have not need seated properly and sooner or later leak again __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

4th May 2015, 18:04	#8
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Agree with that Steve. If folk really have to do the job without removing bumper, I suggest they use the middle groove mod as per your pictures to move the bottom seal upwards. At least then it can't fall off while inserting the elbow. __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

28th April 2015, 18:15	#2
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,754 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Yea, do it. They'll be in a worse state than you expect. And it will make you feel better. TC

4th May 2015, 16:32	#3
ako2k7 Regular poster Rover 75 CDTI Saloon MK2 Join Date: Jan 2013 Location: Hull Posts: 87 Thanks: 21 Thanked 11 Times in 9 Posts	Is there a guide for replacing these without removing the bumper ?

4th May 2015, 16:37	#4
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,754 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	I seem to remember wullie wrote one. TC

5th May 2015, 08:34	#10
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	I am with Jules on this one The easiest, and by far the most reliable method it to remove both the bumper, and the nearside headlight. Once the elbow is reinstalled with the new O rings, a self tapping screw with silicone sealant applied through the outer sheath of the intercooler housing between the O rings, should ensure a fit and forget solution Brian