Fork seal replacement

[LoftCol]

Good afternoon, just discovered that the oil seal has gone on the front right hand side fork. I am planning to change them both, how do I identify which type of forks I have. The brake calipers are held in place by a single bolt the screws up from the bottom. The wheel shaft is clamped on the right-hand side and castle nut on the left.
Thanks for any advice

[bikerphil]

Those forks are from a Special, 79-81. Midnight Special 81 is different and won't fit. 37X48X10.5 is the size of the seal for your forks.

[LoftCol]

Brilliant, thanks. I will get some ordered. Are then other seals I should think about replacing while they are out? Thanks

[bikerphil]

No other seals, just the oil seal and the dust boot on the top. The dust boot is usually ok unless it is cracked.