125 h / j head stem bearings

[BONEHEAD]

can anyone tell me the dimensions of the headstem bearings and coolant seals for a 125h, i had to destroy the old ones your help is much appreciated cheers

[DJRacing]

Hi Bonehead, my advice is to go to your local yammie shop and buy an 'All Balls- steering kit' and replace the oil seals with genuine yammie seals. The lower seal is a bit different from a normal looking seal and the middle seal is like a half seal. If you need the part # let me know. But if you really want to know the oil seal sizes I can look it up for you.

But my advice is to go geniune if you dont want it leaking.

[BONEHEAD]

cheers for that , i did not know if all balls made a kit , just out of curiosity do they do swingarm bearing kit for this modle or maybe genuine only, thanks for your reply.

[DJRacing]

Dont know about the swingarm bearing kit but when it comes time to replace them I will be looking around because the cost of genuine will blow the budget sky high. I'm sure they make a kit for the '84-'85 models. Maybe you could ask at your shop.

[caps 999]

yeh they should they do one for th 250j so they should

[BONEHEAD]

went down the yammie dealer this morning and told them what i require , got some strange looks, like why bother anyway im waiting on there price and availability i will let you guys know, do you think 84/85 swingarm bearings fit? cheers.

[YZ250H]

I bought genuine seals from the local dealer and all balls steering head bearings.  Both worked well, but as you know she still leaks    All Balls all good so far.  Fitted beautifully and smooth as.

[VMX Andrew]

i replaced every seal and bearing in the rear end of my yz250h with genuine stuff without asking about the prices first with the local yammy dealer....jezzzus didnt i get a rude shock when i went to pick them up....certainly learnt a lesson in that department....  

[DJRacing]

The cost in NZ$ for 'All Balls Steering kit' $70;  The 3 oil seals genuine $29.30 bottom seal; $23.30 middle seal ; $15.20 top seal ; and the genuine o-rings @ about $8.50 each.

Its a different story with the swingarm bearings (genuine)big $$$$... but I believe an 'All Balls Kit' is about $200.

[BONEHEAD]

holly crap the swingarm bearings are pricey, the headstem bearings and seals are fair in price ,lm just going to talk to the bank manager, i mean handbrake , i mean my wife before she hits powerband, about purchasing these items.

[VMX Andrew]

bearings seals and bushes for bottom of shock and swingarm......around from memory $380...... :'( :'(

[DJRacing]

The 'all balls' kit for the swingarm is including the linkage bearings and seals. Its not just for the swingarm bearings.

[BONEHEAD]

my local bloke said that they dont make a kit that goes that far back in time, so he suggested that maybe later modle will fit , any clues ?? 

[DJRacing]

Hi Bonehead,  I have just done a seach and this is what you need in the way of bearings and bushs for the YZ125J model.
4x   93317-22208 bearing for the swingarm & top link to the shock.

4x   90386-22097 Bush(nylon) for the swingarm & top link to the shock.

2x   90380-16077 Bush(metal) for the swingarm

1x   90387-163F6 Bush(collar) for the top link to the shock.

The linkage bearing & bushes
1x   93315-22046  Bearing (upper link)

1x   90380-14095  Bush(metal) upper link

1x   5X6-22123   Bush (lower link)

2x   90384-16156  Bush (lower link)

This isnt including the oil seals or any shims etc.
The swing arm bearings are used on models up to 1983(YZ100K) and the nylon bushes are use up to 1985 on the Tri-Z ATV. The metal bushes are used up to 1987 on the IT200 and TT350.

The most commonly use bearing 93315-22046 is used on the WR250 in 1997 and its matching bush is used up to 1995 on the XT600.

90384-16156 is only used by 7 different bikes, mostly in 1982 but the IT175k used it also in 1983.
90387-163F6 is used by 5 bikes, last being the 1983 YZ100K.
5X6-22123 is used by 7 bikes, last being the 1983 YZ100k.

I hope this helps some way for you.

part # 93317-22208 is a roller bearing that could be a general sized bearing 28.5G NT. (I'm not sure what that means, but someone here might)

I try not to buy oil seals from my local dealer as I have all the Yammie part numbers for oil seals and what that part # means in actual sizes.

The best thing about the J models is they have grease nipples on the linkage system and seem to last for years and years, so its usually just the swingarm bearings/bushes that need replacing.

[BONEHEAD]

dj is it raining where you are ? or do you know the part numbers !, thats fantastic , i will save this info for when i return from holidays and give the missus sometime to relax before i spend up on the 125 h ,its just a racer, that needs some work will be my excuse.