Hello Guest User,

Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.

To access these 'Registered Users Only' areas simply register and login.

Head Bearing Advice

Need help restoring, building, or finding then try here.

Moderators: chrisu, paul doran, Taffus, KeithZ1R

Message
Author
User avatar
BigZCas
100Club
100Club
Posts: 479
Joined: 17th Dec 2016
Location: 8b Blackburn Road, Barwell, LE9 8EN

Head Bearing Advice

#1 PostAuthor: BigZCas » Thu Aug 24, 2017 4:15 pm

Could someone advise please.
I have fitted new replacement tapper roller bearings in the steering head.
When I lock the nut tight the side to side movement goes tightish but does not lock fast, is this correct ?
How much should the nut be backed off, If I back off 1/2 turn the steering head cap goes loose ?
Thanks for any advice.
Cas
Past 5 Years
1974 UK Z1a, Candy Tone Brown/Orange
1976 KZ900a4, Diamond Dark Green
1978 KZ1000a2, Luminous Green
1976 KZ1000a1, Red
1972 GT750J, Candy Lavender

Julian_Boolean
Custard Cream
Custard Cream
Posts: 804
Joined: 20th Oct 2016
Location: Ipswich

Re: Head Bearing Advice

#2 PostAuthor: Julian_Boolean » Thu Aug 24, 2017 4:51 pm

From memory, you're supposed to tighten tapered head bearings to a certain torque, initially they will feel tight but will bed in, but I don't think I've fitted a set for 10 years
An expanding collection of parts pretending to be a Z1100R and a Yamaha FZ750

User avatar
zed1015
Hardcore
Hardcore
Posts: 3814
Joined: 2nd Nov 2005
Location: Somewhere between Scunny and Goole.

Re: Head Bearing Advice

#3 PostAuthor: zed1015 » Thu Aug 24, 2017 4:54 pm

There should be no play in any direction with new bearings fitted unless they are the wrong size on the stem.
Is it possible that the seats are not fully home in the frame yet and each time you tighten them it just pushes the outer race a little further in .
Taper rollers are notoriously hard to adjust correctly for the uninitiated but that usually results in the bearings being overtightened.

ZedHead
Hardcore
Hardcore
Posts: 2727
Joined: 9th May 2009
Location: Darlington
Contact:

Re: Head Bearing Advice

#4 PostAuthor: ZedHead » Thu Aug 24, 2017 9:03 pm

unless they are the wrong size on the stem


I supplied a standard SSK400 30x48x14 30x52x17 kit which should fit Steve's Z1A. Unless someone knows different?

Steve, good luck with the rebuild mate. Even if you remember where everything goes she probably won't go back together as quickly as she came apart. Why is that guyz?

User avatar
BigZCas
100Club
100Club
Posts: 479
Joined: 17th Dec 2016
Location: 8b Blackburn Road, Barwell, LE9 8EN

Re: Head Bearing Advice

#5 PostAuthor: BigZCas » Thu Aug 24, 2017 9:46 pm

All fits fine, the kit is correct :)
Just expected it to lock if fully tightend.
Decided to tighten untill nut stops and then back off quarter turn.
seems good at that :)
Thanks all
Past 5 Years
1974 UK Z1a, Candy Tone Brown/Orange
1976 KZ900a4, Diamond Dark Green
1978 KZ1000a2, Luminous Green
1976 KZ1000a1, Red
1972 GT750J, Candy Lavender


Return to “Bike Help”

Who is online

Users browsing this forum: Peteypops23 and 176 guests