Question about Porter Cable 345 6" Circular Saw Saw Boss

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The shaft holding the blade on my 345 6" saw boss

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The saw needs new bearing/bushing on the shaft.

Posted on Nov 09, 2010

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1 Answer

How do I change the blade on a Craftsman 10"


Hi Tom, W/D here.
There are usually three different ways that blades are installed and/or removed. All require that the power be removed from the saw first (pull the plug, please).
1. The most common method involves a shaft lock, so look for this first. It will appear as a button on the motor, near the blade. When you depress the button, you'll need to rotate the shaft/blade by hand until the lock sets in place in the shaft. Then, while still holding the shaft lock button down, use a wrench to loosen the blade. (Look at the threads to make sure that you are turning in the right direction, as this may be reverse threaded).
2. Less common is a shaft that has an allen socket in the end of it. Place the loosening wrench on the not, then place the allen wrench in the end of the shaft.
3. If all else fails, you can, VERY carefully, wedge the blade down into a piece of soft wood such as pine, then loosening the blade with a wrench. Make very sure that you keep all of your bodily parts out of the line of fire when using this method, as the blade can turn suddenly, and you don't want to have anything caught up and cut by the blade.
Hope this helps, Best regards, --W/D--

Nov 04, 2011 | Craftsman 10" Table Saw

1 Answer

The blade on my saw also moves about an 1/8" back and forth. I believe the the shaft has end play as the blade is tight on the shaft. Above is is stated to use a fiber type washer to fill the gap! ...


the washer would go on the outside of the blade facing the screw and then the screw would tighten the washer to the blade which would stop the 1/8" play amount if the saw is leaving marks what type of blade are you using a finish blade would have alot more teeth then a frameing blade how teeth does that blade have if you have any further questions message me back thanks Rick

Feb 25, 2011 | Black & Decker CS1012 7-1/4" 12 Amp...

1 Answer

The diamond insert in the hub of the blade keeps falling out as soon as I start a cut. What is wrong?


DO NOT USE SAW!!!

1. switch off saw, remove cord from socket (positive electrical insulation)
2. lift table for maximum cut and check size of the washer holding the blade,
3. you should have holding nut with collar, collar is about 1 1/4 (32mm) diameter, then blade (diamond is actually universal reducing bush in some blades) and lastly you should have internal washer, again, about 1 1/4" (32mm) diameter. if your collar are smaller, you need to replace blade as not suitable for your particular model, albeit I am rather suspicious that you have wrong collared nut and internal collar. Please check if both collars are exactly this same diameter. Please check if collars cover diamond cut-out.
4. if you see discreptancy between description in 3, purchase suitable blade (external diameter is 7 1/4" (184mm), as you did not supply what model of your saw, therefore most probably shank is 5/8" (16mm),
5. mount internal bush (collar), will go correctly only in one way.
6. mount blade (pay attention to cut direction, cutting surface should be clockwise if you look at mounting shaft.
7. mount external flared nut
8. check blade for slippage and wobbliness
9. connect power cord and switch on/off
10. check saw blade againg for slippage/wobbliness
11. make test cut if 10 was correct
12. use normally

Do not forget that this is not a toy, it will cut through wood, ocassional nail and your fingers.

Opearating saw crate flying debris, always wear googles or facemask, you have only two eyes and there is no spares.

Please leave note how you go with this advice.

Aug 18, 2010 | Sears Craftsman 7-1/4 in. Circular Saw...

1 Answer

Saw is not cutting true / will not cut a straight line ?


Check blade is on properly. Remove blade and clean area where mounts to shaft. Make sure proper washers are in place. If blade is bent or wobbles replace. If blade is dull replace. Be sure you're getting enough water to saw. Don't force the tile through, let the saw do the work. Nothing helps any kind of saw more than a nice new blade.

Jul 01, 2010 | Diamond Products Mk - 101 10" Tile Saw

1 Answer

Looking for shaft lock to change the blade on MK 170 wet saw


Just use a rag and grab the blade. Unless the threads are messed up you don't have to hold the arbor still, just the blade.

Apr 27, 2010 | Mk Diamond MK - 170 Wet Cutting Tile Saw

1 Answer

Nut that holds the blade loosens after one cut. saw also runs loud and rough. believe is it related to the "gears" and cause of the nut loosening.


Sounds like a bearing is shot and rattling up the works there. Rock the blade back and forth and see if there is any play in it, check the bearing at the other end of the shaft. Is this one of those skil saw motor saws? Or is the motor hanging down below the blade? Need to know that before I can tell you what it is.

Mar 14, 2010 | Craftsman 10" Table Saw

1 Answer

Not cutting in straight line


Normally blade overheating. Improper blade or too few teeth for material, teeth not sharp and/or offset enough for proper width of cut. Teeth must cut wider than blade. Inexpensive blades tend to do this quickly. Other possibility: Bad bearing, check for play with saw unplugged. Blade should have little wobble. Other possibility: Saw body cracked/damaged(allowing shaft to skew) or very cheap saw unable to handle material

Sep 25, 2009 | Saws

2 Answers

How to change the saw blade


Adjustments
LARGEHEXWRENCH
TO REPLACeTHE BLADE
See Figures 43 - 45.
 Unplug the saw.
 Lower the saw blade, raise the blade guard, and remove the throat plate.
 Make sure the bevel locking lever is securely pushed to the left. Raise the saw blade to its full height by turning the height/bevel adjusting handwheel clockwise.
 Using the smaller hex wrench, insert the flat open end into the flats on the arbor shaft.
 Insert the closed end of the larger hex wrench over the hex nut. Holding both wrenches firmly, pull the larger wrench forward to the front of the machine. Make sure the blade nut is securely tightened. Do not overtighten.
Check all clearances for free blade rotation. See To Set the Scale to the Blade. In cutting operations, the scale will be set to the side of the blade where the cut will be measured and made.
To replace the blade with an accessory blade, follow the instructions provided with the accessory.
To install a standard blade:
 Place the new blade on the arbor shaft (the teeth must point down toward the front of the saw to work properly).
 Place the blade washer and the blade nut over the blade arbor. Be sure the dome side of the blade washer faces out from the blade and that all items are snug against the arbor housing. Tighten securely.
SMALLHEXWRENCH
Fig. 43
Blade
Bladewasher
arbor shaft
Bladenut
Fig. 44
BLADEGUARD
THROATPLATE
spreader
BLADE
Fig. 4535
ADJUSTMENTS
 Rotate the blade by hand to make sure it turns freely.
 Lower the saw blade and reinstall the throat plate.
NOTE: Securely tighten throat plate screws. Do not allow the throat plate to bow up above the table surface.

Sep 18, 2009 | Saws

2 Answers

Blade replacement on mk-170 tile saw.


take a pair of good vise grips and hook onto blade tightly, slide uo against back braket. that will hold the blade from spinning while you remove the nut, try bumping your ratchet/ wrench w/ a rubber mallet or hammer. hope this helps

Oct 29, 2008 | Mk Diamond MK - 170 Wet Cutting Tile Saw

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