Author Topic: husqvarna crankshaft tools, worth having?  (Read 286 times)

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Offline raumato01

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husqvarna crankshaft tools, worth having?
« on: November 21, 2017, 01:47:49 am »
Saw these the other day  and since I'm about to rebuild a couple of this mode was wondering if they are worth  purchasing ?

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Offline Cut4fun .

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Re: husqvarna crankshaft tools, worth having?
« Reply #1 on: November 21, 2017, 08:18:13 am »
Rebuilt many of that series  without the crank tools or the splitter. But that is me. I am sure the right tools make the job easier.  But those are one I found I didnt have to have.

husqvarna service tools

Matt  = as an update, i'm caught up on all orders of kits. I have good stock at this point and can fill other orders immediately.

couple things have changed.
#1, new rods are being thread milled on a cnc lathe ... the threads look quite nice
#2, 440 specific kits are no longer being made. the rods just turn out too weak and it just isn't possible to make these correctly, the main kit certainly does 440 saws, but I cannot make a saw specific tool kit anymore
#3, 576 (575, 570) rods are being looked into. by design this needs to be a singled ended tool and the ones that the previous machinist made were ... uh... a pain to mass produce
odds are this rod will need to be cut out of a 3/4" round rod blank, not threaded rod. this presents issues due to the extra low volume of 576 rods requested ...
#4, the most common failure I know about on the tools has to do with user error. you cannot use a small aluminum sleeve on a saw with 6203 bearings. most commonly the flywheel side rod (which is 5/8") gets used with the small sleeve (5/8" ID) on a saw that has a crank that is 17mm. the aluminum sleeve which is designed to accomodate 16mm crank OD will get mushroomed. SOLUTION: use the large sleeve on large bearings ... even though its 3/4" ID sleeve, the 5/8" flywheel rod works fine with it. users that have the kit will make sense of this nearly immediately
#5, 2nd most common failure has to do with breaking threaded rods due to improper use.... they are NOT designed to pull bearings into crankcases. once you have the bearings properly installed in the crankcase, ONLY THEN do you grab the crank tools and pull the crank through the bearings (and subsequently the case halves together).
#6, crank seals.... I know that many crankcases come with crank seals (and bearings) pre-installed. IMHO, you do not want to be doing 2 things at once pulling the crank through the bearing AND the seal at the same thing. I think this is asking for trouble. if a case comes with seals pre-installed, pull the seals out, install the crank, get the case halves together, THEN install the seals (with the coke can trick). doing it this way seems to me to be the only way to ensure the crank seal doesn't prolapse.
#7, I do need to work on an instruction sheet / cheat sheet ... I'll get to it.
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Offline weimedog

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Re: husqvarna crankshaft tools, worth having?
« Reply #2 on: November 27, 2017, 12:30:14 am »
Saw these the other day  and since I'm about to rebuild a couple of this mode was wondering if they are worth  purchasing ?

Yes. They aren't that expensive and the pull the crank through the bearing.....and on most the bushing sets on the inner race of the stress on the bearing or on the cases. I too have built many saws by other means....but these pullers are by far the best option for saws such as the 562, 372 series, 390's etc. There are better prices if you look around BTW. Along with the pullers on some models the seal drivers also are worth the expense. Especially if you do more than a few.
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