Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: mweba on March 12, 2012, 10:25:59 pm

Title: stihl bar stud repair
Post by: mweba on March 12, 2012, 10:25:59 pm
Looking for suggestions.  Only issue with this saw is the bar studs.  One was an attempted heli coil repair and the other is hogged out past that point.  Any tricks from the experienced Stihl guys???  Admittedly my experience is limited.

(http://farm8.staticflickr.com/7206/6831896114_460aa6429f_z.jpg) (http://www.flickr.com/photos/mweba1/6831896114/)
Bar stud (http://www.flickr.com/photos/mweba1/6831896114/) by mweba1 (http://www.flickr.com/people/mweba1/), on Flickr
Title: Re: MS 440 bar stud repair
Post by: Cut4fun . on March 13, 2012, 06:37:15 am
There is a bar stud repair kit offered by stihl that I remember reading about years back. Something about being over sized where they go into the case. I cant remember specifics sorry


other ideas   http://www.mcmaster.com/#threaded-inserts/=gn5tfy

more info  bar stud from an 056 MAG is 10mm and only it had the 10mm studs where they go into the case. 1115-664-2405  $7

stihl over size for 029 etc. So they must have for the mag crankcases too.

If the Standard Collar Screw is part #1127 664 2400, DG 8 thread, use Oversize Collar Screw part # 1127 664 2410, DG 9 thread, for 1127 series saws such as MS 290, MS 390
Installation:
If the thread has been stripped, the damaged mounting hole in the engine housing already has the required diameter (approx. 8 mm) and does not
need to be drilled out. Coat the DG 9 thread of the new collar screw with Red LOCKTITE 262, or equivalent and apply it squarely to the bar mounting face.
Use an 8 mm stud puller to install the collar screw into the engine housing and tighten down to a torque of 16 Nm.

If the Standard Collar Screw is 1123 664 2400, DG 8, use Oversize Collar Screw 1123 664 2405, DG 9, for 1123 series saws (021, 023, 025, MS 210, MS 250). It will also work on the 1130 (MS 170, MS180), and 1132 (MS 191T)
install same as above.

An oversize collar screw, part number 1115 664 2405, is available for alloy housings that have been stripped. The damaged hole will need to be drilled out to 8.5 mm (0.335 or letter drill Q) and rethreaded with a 10 mm by 1.5 pitch tap. Coat the threads with Red LOCKTITE 262, or equivalent, and install with the stud remover or use the double nut method. This collar screw is for the 3003 bar mount.
Title: Re: MS 440 bar stud repair
Post by: mweba on March 13, 2012, 08:20:04 am
Thanks for that info!  I have several 029 and 056 mag II.  One should have a stud left.  Will keep this one updated
Title: Re: MS 440 bar stud repair
Post by: mweba on March 13, 2012, 06:53:22 pm
The 056 mag stud couldn't have worked better.  It cut new threads into the case without issue.  Red lock tight and it should be good for years to come. 
Title: Re: MS 440 bar stud repair
Post by: Cut4fun . on March 13, 2012, 07:58:30 pm
Sweet.  8)
Title: Re: Stihl oversize bar stud replacement
Post by: Cut4fun on February 05, 2017, 12:57:25 pm
Just looking for a place to save this pic and info. Stihl oversize bar stud replacements. 
Thanks to a stihl dealer in my other group. ;)



Title: Re: MS 440 bar stud repair
Post by: mdavlee . on February 05, 2017, 05:28:40 pm
Nice
Title: Re: MS 440 bar stud repair
Post by: Eccentric on February 06, 2017, 06:24:37 am
Good stuff.
Title: Re: MS 440 bar stud repair
Post by: jmester on February 06, 2017, 09:57:43 pm
Thanks for posting. That should come in handy one day. I knew of the oversized studs for the plastic cased saws. Never knew there was one for mag case saws.
Title: Re: MS 440 bar stud repair
Post by: pete on February 07, 2017, 03:22:37 am
Any Idea if there is something similar to use on the mag crankcase of an 015 its a ripper of a running powerhead way to good to part out but the stud thread is not great.
Title: Re: MS 440 bar stud repair
Post by: Cut4fun . on February 07, 2017, 01:42:46 pm
Thanks for posting. That should come in handy one day. I knew of the oversized studs for the plastic cased saws. Never knew there was one for mag case saws.

My Chainsaw Repair group has over 11,000 members now. Just branched it off of this place not long ago as the websites seem so old school for the millennials today.   Updated Sept 2019 with ovr 38,000 members now.

There are so many stihl techs there and a few of them are moderators.  They share bits and pieces of stuff and it gets lost quickly there. So If I catch it I try and save the good stuff here so not to get lost.  ;)
Title: Re: stihl 461 460 046 290 310 390 029 039 stud repair
Post by: Cut4fun on September 09, 2019, 08:42:33 am
@joe_indi  info you shared on the chainsaw repair group earlier. Making sure to save that type of stuff here to find easier later.

Joe
Conversation Starter 4 hrs

I had tried all kinds of fixes for the stripped thread on the crankcase for the 8mm studs on Stihl saws, especially the countless 460s and 461s that are in use here.

But all of them were cumbersome fixes, time consuming and could cause disasters on the crankcase.

That is, until I read a Stihl technical information on an oversize stud for the 29/39 saws.

Self threading 9mm studs on the side that goes into the body. 8mm on the outside.

But these were intended for the non metal housings of the 29/39/290/390 saws. They also had wider collars unsuitable for the use I had in mind.

Anyway in 2001 I got myself a pack of 10 of these oversize studs. Got a friendly tooling shop to reshape them on the lathe. And they worked like a dream!

And I have been using this fix ever since. Time for the fix is just 10 minutes or less.

Title: Re: stihl bar stud repair
Post by: joe_indi on September 09, 2019, 09:42:41 am
posted is as a new thread here a few minutes ago