High Quality Chainsaw Bars Husqvarna Toys

Installing bearings that have the seals pre-installed

kfd518

Pinnacle OPE Member
Local time
7:30 PM
User ID
6132
Joined
May 13, 2018
Messages
804
Reaction score
3,334
Location
Central Texas
Country flag
When installing bearings that have the seal installed already, how do you get the bearing on the shaft? Heat inner with soldering iron? Coil with oil then heat case and coil with oil? In order to keep from damaging the pre installed seals? Older stihls it seems used many of these.
 

Stump Shot

Disciple of Monkey's
GoldMember
Local time
7:30 PM
User ID
1377
Joined
Jun 5, 2016
Messages
30,974
Reaction score
193,740
Location
Northwoods of Wisconsin
Country flag
When installing bearings that have the seal installed already, how do you get the bearing on the shaft? Heat inner with soldering iron? Coil with oil then heat case and coil with oil? In order to keep from damaging the pre installed seals? Older stihls it seems used many of these.

They're not the interference fit like Pro saws are. the versions of this that I have worked on both Stihl and Husqvarna they just slid on the crank by hand, nothing special needed.
 

kfd518

Pinnacle OPE Member
Local time
7:30 PM
User ID
6132
Joined
May 13, 2018
Messages
804
Reaction score
3,334
Location
Central Texas
Country flag
The 056s is what I’m getting ready to work on I have a spare seal but don’t want to have to use it Because I messed up the the pre installed one.
 

p61 western

Ol Mudflap
GoldMember
Local time
5:30 PM
User ID
2003
Joined
Oct 18, 2016
Messages
28,777
Reaction score
125,219
Location
GFY
Country flag
I would freeze the crank, and then heat the bearing in a oven to say 150 degrees. That heat shouldn't hurt the seal, heck you could probably even go warmer if you want.
 

kfd518

Pinnacle OPE Member
Local time
7:30 PM
User ID
6132
Joined
May 13, 2018
Messages
804
Reaction score
3,334
Location
Central Texas
Country flag
Alrighty, just hate to mess up a perfectly good seal if no necessary. Of course that old it might be hard anyways...... hadn’t thought of that
 

Fish

Pinnacle OPE Member
Local time
8:30 PM
User ID
587
Joined
Jan 18, 2016
Messages
808
Reaction score
1,260
Location
Manton Ky.
Damn, I never had any trouble...
I just used old microfiche cards as a sleeve....
 

mdavlee

Hillbilly grinder
Local time
8:30 PM
User ID
279
Joined
Dec 28, 2015
Messages
14,194
Reaction score
64,602
Location
TN
Country flag
Press it on using the inner race if it’s going on the crank first. Even a socket with a small hammer will seat them. Warm the bearing up and leave the crank cold. I never liked freezing anything since condensation can happen rather quickly and cause more aggravation
 

1990Husky262

Super OPE Member
Local time
8:30 PM
User ID
720
Joined
Jan 28, 2016
Messages
115
Reaction score
230
Location
Massacusetts
Country flag
i use one of the old big soldering irons and ground the tip so bearing can sit right on it and heat inner race, heat till its hot enough when you spit on it it sizzles, Grab with pare of pliers and slide on crank and give couple light taps with pliers to make sure all the way seated. Gotta work quick cause does not take long to cool off and will end up getting stuck half way, if at right temp bearing just slides right on
 

kfd518

Pinnacle OPE Member
Local time
7:30 PM
User ID
6132
Joined
May 13, 2018
Messages
804
Reaction score
3,334
Location
Central Texas
Country flag
Just pop the seal off...
And this is done how, without tearing it up? Honestly don’t know how to do so I’m sure if it was in hand it would be more obvious but it’s still in transit.
 

Marshy

WFO Cutting
Local time
8:30 PM
User ID
417
Joined
Jan 5, 2016
Messages
3,800
Reaction score
13,095
Location
Mexico NY
I just use a mechanic pic and gently get under the lip and it just pops out.
 

kfd518

Pinnacle OPE Member
Local time
7:30 PM
User ID
6132
Joined
May 13, 2018
Messages
804
Reaction score
3,334
Location
Central Texas
Country flag
Not the same type of seal. This is a double lip seal with metal outer diameter ring same as any other crank seal on a non clamshell saw. It’s the bearing pictured on the right.
A0517F48-C600-4413-9113-3EAA99FF0083.png
120713CF-0950-4767-9196-75F2203158D1.png
 

Marshy

WFO Cutting
Local time
8:30 PM
User ID
417
Joined
Jan 5, 2016
Messages
3,800
Reaction score
13,095
Location
Mexico NY
Same except it wont be as easy. Using a 90 degree pic allows you to get under the lip and then pry it out.
 

Al Smith

Here For The Long Haul!
Local time
8:30 PM
User ID
537
Joined
Jan 14, 2016
Messages
6,095
Reaction score
13,457
Location
North western Ohio
Country flag
I never thought of using a sealed bearing but I see no reason why it wouldn't work in some applications .The procedure as per Stihl is to freeze the bearing and heat the bearing pocket and install the bearing there in .Then freeze the crankshaft and use a big soldering iron to expand the inner race .Why Stihl used a heat shrink fit I'll never know ,just Stihl being Stihl I guess .
Thinking out loud ,with some creativity this might be an option to the often discussed elusive,next to impossible to find Stihl 042-048 clutch side main bearing and seal .
 

mdavlee

Hillbilly grinder
Local time
8:30 PM
User ID
279
Joined
Dec 28, 2015
Messages
14,194
Reaction score
64,602
Location
TN
Country flag
I never thought of using a sealed bearing but I see no reason why it wouldn't work in some applications .The procedure as per Stihl is to freeze the bearing and heat the bearing pocket and install the bearing there in .Then freeze the crankshaft and use a big soldering iron to expand the inner race .Why Stihl used a heat shrink fit I'll never know ,just Stihl being Stihl I guess .
Thinking out loud ,with some creativity this might be an option to the often discussed elusive,next to impossible to find Stihl 042-048 clutch side main bearing and seal .

Depending on depth a 385 bearing with made in seal might fit. It’s a 6203 with seal in between the races
 

kfd518

Pinnacle OPE Member
Local time
7:30 PM
User ID
6132
Joined
May 13, 2018
Messages
804
Reaction score
3,334
Location
Central Texas
Country flag
Depending on depth a 385 bearing with made in seal might fit. It’s a 6203 with seal in between the races
That’s exactly how this bearing is made. The seal is between the races. The bearing did come in the mail Saturday though I just wasn’t aware it was sitting in the mail box.
Thanks everyone for the input many ways to tackle this thing now.
 

Al Smith

Here For The Long Haul!
Local time
8:30 PM
User ID
537
Joined
Jan 14, 2016
Messages
6,095
Reaction score
13,457
Location
North western Ohio
Country flag
On the subject rambling on as I do .Where I worked,a Ford engine plant we used precision CNC machining that could repeat operations measured within micron ranges .Periodically the machine spindles would need rebuilt most using sealed precision bearing ,very pricey I might add .The people who set them up would get new bearings,pull the seals and use an ultrasonic cleaner to remove all the grease .Then repack them,rotate them and blow all the new grease out with compressed air .The only grease that remained was what clung to the balls.Reinstall the bearing with the seals and rebuild the spindles . Sounds crazy but the was the way they did it .
 

kfd518

Pinnacle OPE Member
Local time
7:30 PM
User ID
6132
Joined
May 13, 2018
Messages
804
Reaction score
3,334
Location
Central Texas
Country flag
Well it’s amazing what happens when you remember your Stihl case splitter is also designed to put them back together......
Bottom end back together with new bearings work on the rest at a later date
 
Last edited:

afleetcommand

Pinnacle OPE Member
Local time
8:30 PM
User ID
2524
Joined
Jan 25, 2017
Messages
955
Reaction score
3,855
Location
CNY
Country flag
And the stihl puller ( and others) can turn the crank helping it through the seal....if they are warm & oil everywhere the crank will go right through in my experience.
 
Top