Steering rack tightness

Everything that keeps your car in contact with the road, and from contacting other road users.
Post Reply
Message
Author
johnboy
Groupie
Groupie
Posts:30
Joined:Fri May 27, 2022 7:53 pm
Steering rack tightness

#1 Post by johnboy » Fri May 10, 2024 5:40 am

I was getting a shudder/ vibration from my steering on my mk11 2000 ( non P A S ). I noticed the steering rack nuts were not up tight so I nipped them up. Vibration disappeared but after reading the manual it said nuts should only be nipped up to 11-14 lb- ft. Should I loosen them off a bit??? Cheers.

johnnydog
Senior Member
Senior Member
Posts:1664
Joined:Tue May 14, 2013 12:33 pm
Location:Lancashire

Re: Steering rack tightness

#2 Post by johnnydog » Fri May 10, 2024 11:17 pm

What is the condition of the bushes in the steering rack clamps? They are relatively inexpensive and easy to replace, and may be partly the cause of your issues.
Register Member no. 1596

1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red

johnboy
Groupie
Groupie
Posts:30
Joined:Fri May 27, 2022 7:53 pm

Re: Steering rack tightness

#3 Post by johnboy » Sat May 11, 2024 12:03 pm

Hi Johnny, There was new poly bush kit fitted a couple of years ago less than 2500 miles. I don't suppose it can do any damage?
Cheers.

johnnydog
Senior Member
Senior Member
Posts:1664
Joined:Tue May 14, 2013 12:33 pm
Location:Lancashire

Re: Steering rack tightness

#4 Post by johnnydog » Sat May 11, 2024 4:44 pm

I guess the torque figures given were for rubber bushes, so I don't think I would go off the 'book' figures. What colour are the polybushes? Different colours have varying levels of 'nvh' (noise, vibration and harshness), so I would try tightening by 'feel' rather than the actual tightening torque figures.
Register Member no. 1596

1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red

johnboy
Groupie
Groupie
Posts:30
Joined:Fri May 27, 2022 7:53 pm

Re: Steering rack tightness

#5 Post by johnboy » Wed May 15, 2024 6:54 pm

Hi Johnny, just checked the bushes again today they are black but definitely poly. The
steering vibration starts about 40 mph and then goes after 60 mph ,then more car vibration but not so severe. I don't know if its my imagination but steering wheel appears centred going down the road then at other times seems off centre!!! Could it be the rack?? Cheers.

johnnydog
Senior Member
Senior Member
Posts:1664
Joined:Tue May 14, 2013 12:33 pm
Location:Lancashire

Re: Steering rack tightness

#6 Post by johnnydog » Wed May 15, 2024 8:23 pm

I don't know what make your bushes are, but here is a list of the differences between the colours of Powerflex bushes - black are the hardest and I wouldn't think they are suitable for a daily use vehicle? They may be a different make however....
Screenshot_20240515_231212_Gallery.jpg
Variations in the road camber and different makes of tyres (usually more budget tyres) react differently to varying road surfaces. I have the same steering symptoms on a Honda CRV on Uniroyals on different road surfaces, although it's only minor. The steering can be dead straight on some roads, but on others, the spokes are slightly at 10 - 4, for some strange reason. I just put it down to the road surface / camber.
I would also be checking the rack for play in both track rods.
Register Member no. 1596

1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red

johnboy
Groupie
Groupie
Posts:30
Joined:Fri May 27, 2022 7:53 pm

Re: Steering rack tightness

#7 Post by johnboy » Thu May 16, 2024 5:56 am

So reading that article- Heritage bushes (grey ) would be the more natural to have. Where could i get them?

johnnydog
Senior Member
Senior Member
Posts:1664
Joined:Tue May 14, 2013 12:33 pm
Location:Lancashire

Re: Steering rack tightness

#8 Post by johnnydog » Thu May 16, 2024 7:16 am

Having checked CW's site, it appears he only now sells black PU steering rack clamp bushes, whereas years ago, he sold yellow ones (if my memory serves me right?). I think I have a pair of yellow ones somewhere in the depths of my garage.....
Maybe worth a call to get his opinion on them - I can only presume the black ones he now sells he has / are tried and tested and are suitable for the use most owners on here make of their Triumph?
Register Member no. 1596

1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red

johnfrancis898
Groupie
Groupie
Posts:51
Joined:Sun May 16, 2021 6:44 pm
Location:Berkshire

Re: Steering rack tightness

#9 Post by johnfrancis898 » Sat Jun 01, 2024 8:46 am

Hi Johnboy
I have recently completed a full front suspension rebuild on my 2500TC. I got a new/exchange PAS rack and struts from CW and also renewed all ball joints and rubbers. Also renewed wheel bearings and discs & pads. When I got it all back together it was fine and then after a few miles a vibration was evident when turning. Investigation revealed that the PAS pump was loose so a tighten up and adjustment of the belt solved the problem.
Good Luck!
Member no. 7941.

2500TC Mk 2 saloon 1976 od/PAS BRG

Post Reply

Who is online

Users browsing this forum: No registered users and 9 guests