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How to change the big drive gearMakita angle - Saws

How to change the big drive gearMakita angle grinder 9557 PB

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Remove the bearing, retaining ring and wave washer on top of the spindle. Now you need a press to push the spindle out of the gear and bearing case. There is a very small woodruff key in the spindle, be careful not to lose that. Do not try to drive (hammer) the spindle out, if you mushroom the end even the smallest amount, you'll have to replace the spindle because you'll never get the bearing back on.

Posted on Apr 28, 2014


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Posted on Jan 02, 2017

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SOURCE: Need brushes for Clarke 41/2" Angle Grinder Model

Heyglmars, most times you can take your old brushes to a westlake hardware store, they have a very good selection of brushes in stock. good luck snoe38

Posted on Mar 21, 2011

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How do I remove the bearing from the drive end of the armature from an AEG WSE802 Angle Grinder?

Dear Michael,

Here offered is a video by Taimo T that offers the entire process. Close attention is needed to absorb his procedure. The foundation is the basis for angle electric grinders.
Angle Grinder And Its Bearings
Please watch the entire presentation.

A small bearing puller works best. Here is examples of one to buy or borrow.

ATD Tools 3056 Bar Type Puller Bearing Separator Set in Molded Storage and....
Pump Pulley Remover Straight Type Two Claws Bearing Puller
Hand Tool

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The alternative is to squeeze the old bearing in a vice with soft jaws . Then move the end shaft with a brass hammer or punch to remove with an internal fit.

Fare. Well.

Dec 12, 2014 | Saws

1 Answer

How to Change a angle grinder disc

My angle grinder came with a special wrench to take off the disk. I have a small button to push that locks the shaft. I push it gently with it UNPLUGGED while turn the grinding wheel by hand till it locks. Then I use the wrench to undo the "nut" that holds the grinding wheel on.

Sep 27, 2014 | Saws

1 Answer

Hi...I have a Black and Decker 4247 angle grinder that I haven't changed the disc on in YEARS...I can't remember if the clamp nut is right hand threaded or left...please help! Thanks lots!

Which ever way your grinder spins when turned on is the same direction the lock nut has to be turned to remove it. This makes sure it's self tightening when in use. More often than not they're right-tight, left-loose.

Nov 26, 2011 | Saws

1 Answer

My Makita cordless angle grinder (new, used once) BGA452 wont go, it starts then the overload light comes on and it stops? changed battery, still happens.

Obviously too late for you, but it may help others.
I had the same problem with a new Makita 18v lithium grinder and this worked.

Remove battery, remove brushes. Using good quality cotton buds, dip in Methalated spirit and insert into hole for brush down to armature, slowly rotate head of machine. Change cotton bud and repeat process, then clean the brush heads. Re-assemble and try. Note: Meths will dry completely leaving no residue, unlike turps etc.

Jul 16, 2011 | Makita Bga452 Lxt 18v Liion Cordless Angle...

1 Answer

I havebeen using a makita 9527 pb 4.5" angle grinder and all the sudden the grinder had troubles working all the time at first it took a little shaking to start up then hitting against a hard surface...

There are various causes of failure but the checks should be carried out in this order, you will need a continuity meter or multimeter to trace continuity from the plug to the switch in the grinder:

If plug is rewireable check for loose screws at plug pin terminals, loose fuses etc.
Wires in power flex breaking, usually at plug or where flex enters machine.Check the continuity from each pin of the plug to the switch in the grinder
Faulty on / off switch or loose spade terminals on switches.
Worn out brushes.
Armature or field coils of motor going open circuit.

Mar 28, 2011 | Makita Garden

1 Answer

Worn gears

I would just buy a new one.
parts could cost almost as much.
don't forget the rest of the grinder is just as worn out too

Jun 24, 2010 | Bosch 1375A 412Inch Angle Grinder

1 Answer

Carbon brush sizes

They are exactly the same brushes. Part number 316041640 .

Sep 15, 2009 | Metabo WE14-150 Quick Angle Grinder

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I borrowed a B&D 7750 3 to cut off the legs on a wire shelf system. I would like to replace the grinding disc but it appears to need a special tool to remove the disc. Is that correct? The owner says...

Yes you need an angle grinder spanner/wrench. It is like a tool with two pins that fit in the holes of the grinder disc securing nut. You can see a picture of one here:

They do come in different sizes, but you can also buy adjustable ones. Your best bet is to take the grinder to the local hardware store, big box outlet or anywhere power tools are sold and they should have a grinder spanner to suit your grinder.

Jul 03, 2009 | Black & Decker 7750 4 1/2'' Small Angle...

1 Answer

How to....

most angle grinders arrive with a spanner; two if it is quite old. if you are not experienced with such tools and do not have the instruction book i strongly suggest you take a trip to your local hire shop and purchase a couple of discs and some goggles and explain your problem there. the staff there will be expert at giving tool virgins crash courses in the safe operation. dont forget a safety rcd for your electric plug.

Sep 28, 2008 | Metabo W14 125 Ergo Angle Grinder 5"

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