Front Knocking (small bumps/ripples) - Page 3

tommyweaves · Apr 3rd, 2018, 20:12

Might not be relevant on your car but if you're replacing the rack it might be worth noting that the steering limiters (fitted on those cars with 8J wheels) are on the steering rack itself, not as "bump stops" on the hub as on P2 cars. They are essentially just a plastic collar.

Also, if you're re-using your existing gaiters you will probably need jubilee clips to hold the inner end of the gaiter in place.

V70Driver76 · Apr 3rd, 2018, 20:55

Thanks. It comes with new track rods installed and gaiters.

V70Driver76 · Apr 10th, 2018, 20:54

By way of closing the loop, steering rack replaced today. Noise still present...

After more rooting around, went back to top of struts and it turns out that the nut on the top of the shock had about 5 turns left on it!

When I did the rebuild a couple of weeks back, both struts were mated with the spring and shock mounts on the bench and torqued with a torque wrench. I can only assume that the mount was caught up on the shoulder of the strut when I assembled it. Just so annoying that the sound just so happened to be on the LHS still and sounded almost exactly the same as the original rattle, which I can only assume now was the original shock mount or strut.

Anyway, pride and wallet properly dented, hopefully the car is kind to me for a while now. The front end should be good, it's pretty much like new now.

Model flyer · Apr 11th, 2018, 09:04

It's a pitty you never spotted that the nut wasn't seating earlier but it happens. As you say it's all good now and should last a few years. When you changed the rack did you change the power steering pipes? They are known to spall off small particles of metal causing damage to the system and blocking the filter.

dped · Apr 11th, 2018, 18:40

Feel for you big time. You wont be the first, you wont be the last. We have all been there chasing a knock or rattle(not the wife) which turns out something simple.

Hope you have lots of fun with the car before any more problems

Good Luck

Joe Harding · Apr 15th, 2018, 21:39

Sorry, irrelevant comment now.

V70Driver76 · Apr 16th, 2018, 21:32

Thanks.

Pipes not replaced although I may wish I had. However, I have put a 3/8” in line filter on the return and it has had two thorough flushes with Pentosin CHF (cost me a small fortune). The filter has an inspection window and washable element so I can keep an eye on things.

Feels like a new car now...

Apr 11th, 2018, 09:04	#24
Model flyer Master Member Last Online: Dec 15th, 2023 18:46 Join Date: Jan 2006 Location: Kent,pothole capital of UK.	It's a pitty you never spotted that the nut wasn't seating earlier but it happens. As you say it's all good now and should last a few years. When you changed the rack did you change the power steering pipes? They are known to spall off small particles of metal causing damage to the system and blocking the filter. __________________ The secret of flight is to aim at the ground and miss ! Previous Volvos 740 GLE . V40 CD ,V70 2.4 SE LPT.V70 D5 P2. V70 D5 Se Lux P3. Current Jaguar XF Sportbrake but still like Volvos

Apr 15th, 2018, 21:39	#26
Joe Harding Premier Member Last Online: Today 14:27 Join Date: Oct 2010 Location: Bristol	Sorry, irrelevant comment now. __________________ "The more people I meet the more I like my God."

Apr 3rd, 2018, 20:12	#21
tommyweaves Premier Member Last Online: Apr 10th, 2024 19:55 Join Date: Sep 2010 Location: Sleaford	Might not be relevant on your car but if you're replacing the rack it might be worth noting that the steering limiters (fitted on those cars with 8J wheels) are on the steering rack itself, not as "bump stops" on the hub as on P2 cars. They are essentially just a plastic collar. Also, if you're re-using your existing gaiters you will probably need jubilee clips to hold the inner end of the gaiter in place.

Apr 3rd, 2018, 20:55	#22
V70Driver76 Junior Member Last Online: May 23rd, 2021 14:47 Join Date: Jul 2017 Location: Grantham	Thanks. It comes with new track rods installed and gaiters.

Apr 10th, 2018, 20:54	#23
V70Driver76 Junior Member Last Online: May 23rd, 2021 14:47 Join Date: Jul 2017 Location: Grantham	By way of closing the loop, steering rack replaced today. Noise still present... After more rooting around, went back to top of struts and it turns out that the nut on the top of the shock had about 5 turns left on it! When I did the rebuild a couple of weeks back, both struts were mated with the spring and shock mounts on the bench and torqued with a torque wrench. I can only assume that the mount was caught up on the shoulder of the strut when I assembled it. Just so annoying that the sound just so happened to be on the LHS still and sounded almost exactly the same as the original rattle, which I can only assume now was the original shock mount or strut. Anyway, pride and wallet properly dented, hopefully the car is kind to me for a while now. The front end should be good, it's pretty much like new now.

Apr 11th, 2018, 18:40	#25
dped Junior Member Last Online: Apr 15th, 2024 19:11 Join Date: Sep 2017 Location: stoke-on-trent	Feel for you big time. You wont be the first, you wont be the last. We have all been there chasing a knock or rattle(not the wife) which turns out something simple. Hope you have lots of fun with the car before any more problems Good Luck

Apr 16th, 2018, 21:32	#27
V70Driver76 Junior Member Last Online: May 23rd, 2021 14:47 Join Date: Jul 2017 Location: Grantham	Thanks. Pipes not replaced although I may wish I had. However, I have put a 3/8” in line filter on the return and it has had two thorough flushes with Pentosin CHF (cost me a small fortune). The filter has an inspection window and washable element so I can keep an eye on things. Feels like a new car now...

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