Pistorius saw motor blowout!!!!


MGF, Master Grumble Framer
Aug 28, 2002
eastern pa
Ugh! I went to chop a few dozen frames today and fired up the ole Pistorius saw and shortly thereafter the one blade ceased to operate...
great. Anyway, it's a fairly old Pistorius saw with the two blades, I'd guess it to be maybe 20 to 30 years old... It's big and green (sorry to sound like a dolt, but I'm not sure exactly what model it is and I can't find the manual for it anymore). The boss said he'd call Pistorius on Tuesday and see if he can get a new motor, and then he asked me how hard it looks to put a new motor on it.... who knows. Does anyone have any idea what the heck I'm talking about? Is it hard to put a new motor on one of these puppies? Or should we call in the professionals?

Baer Charlton

SPFG, Supreme Picture Framing God
May 24, 2004
Judging by your post.... time to call a pro.

This could be that wonderful occation where they go through and REALLY Tune it up...

Make sure you are standing right there and paying attention when they go over the "Maintaince" stuff.

Alan Sturgess

CGF II, Certified Grumble Framer Level 2
Oct 30, 1998
Vancouver, BC, Canada
I have changed a number of these and the time to do it should be no more than an hour if you have all the tools and are not afraid of changing electrical wires with the machine unplugged or the breaker thrown to the off position. It is not a difficult task and on a scale of 1 to 10 for neophytes I would rate it a 6.

Call Pistorius and ask for William. He can walk you through the procedure on the phone and you can then decide if you want to do it or if you want to find someone to do it for you. William may be able to tell you if there is a distributor in the area with someone who could do the work. You might be in the area where you could get Pistorius to do a service call so ask what the charge would be to come out. Most likely you have the Model EMN with 12" blades and there is nothing wrong with a 20 or 30 year old Pistorius.

Buy a new motor and then get the old motor rewound and keep it on the shelf as a back up. The same motor works on the left or the right side. You just need to have the electrical schematic for the motor as the way you hook the wires up determines the direction of rotation and the left and right motors turn in the opposite direction.


Jim Miller

SPFG, Supreme Picture Framing God
Forum Donor
May 19, 2000
Suburban Central Ohio
The hardest part -- after figuring out the wiring -- is properly tensioning the belts.
My 30 year-old EMN hs two belts, but some older saws have been converted to poly-v belts (lots of grooves on bottom of belt).
In any case, the belts must be tight, and they must track straight. Use a yardstick to check that pulleys are parallel.
Or call Pistorius.
UltraMitre visited my shop last month and replaced the bearings. You could check their schedule,too.

Rob Markoff

PFG, Picture Framing God
Mar 8, 1999
San Diego, CA USA
Before replacing the motor, be sure it isn't a fusable link in your motor control, or a heater or contactor in your switch. Much less expensive and easier to fix than the motor itself.

If you have a single push button to turn on both motors, I would first look there (in the motor control box)to rule out any problems. Is voltage reaching the "faulty" motor?

David Waldmann

Herder of cats
Forum Donor
Featured Vendor Forum Sponsor
Feb 6, 2002
Chester, Vermont USA
Vermont Hardwoods
Originally posted by Alan Sturgess:
You just need to have the electrical schematic for the motor as the way you hook the wires up determines the direction of rotation
Or, the easier way - turn it on and then switch the wires if it runs backwards. :D