Thread: Guide pin
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Old Feb 14th, 2019, 12:34   #14
Ian21401
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Last Online: Feb 11th, 2023 21:32
Join Date: May 2010
Location: Blyth, Northumberland
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Quote:
Originally Posted by mjk164 View Post
The guide pins are only there to ensure the wheel goes back onto the same bolt holes. This was brought in to help resolve wheel balance; an issue with some Volvos. If you loose, break or damage a pin then a dab of paint on the wheel bolt hole next to the guide pin hole and a similar mark on the hub will ensure it is properly located. Any bolt with the correct thread and filed down and screwed in will do the same thing.
None of my previous cars have had a guide pin in the hub. Because of the wheel balance issue I did what mjk164 has suggested. Mark the wheel and hub or stud to ensure that you replace the wheel in the same place relative to the hub.
Decades ago, before front wheel drive was so prevalent, there was system for dynamic balancing of the front wheels whilst still fitted to the car. This method factored in any imbalance of the brake drum/disc and hub etc. IIRC, the wheel was jacked up, sensors were placed on the suspension, a trolley was located beneath the wheel which was spun up by a wheel within the trolley and a result displayed on display on the trolley, then weights added as required. Having gone to this bother, if the wheel was subsequently removed then it must be replaced in the same position relative to the hub etc. or the whole thing could be out of balance again.

Last edited by Ian21401; Feb 14th, 2019 at 15:16.
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