Question about Hitachi WR12DM2 12 - Volt Impact Wrench

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Pin retainer when i put a socket in my impact it keeps falling out. i've tried greesing it and the retainer pin doesn't want to stay out. i think i need to replace it but can't figure out how. and on this parts list i was looking at it showed a plunger but i don't seem to have one on this. it just looks like a hole. maybe i lost that out of it and that's the problem

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There should be either a pin or part of a ball sticking out, just like a ratchet, it all depends on the model..If you just see a hole, you lost the part. You will need the socket retainer, the spring and the retainer for these parts.

Posted on Feb 23, 2009


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I have a husky 1/2 inch air gun, I bought the 1/2 inch impact sockets, they do not attach... They appear to small. What is the problem?

At the end of the anvil there is a retaining ring with an o-ring acting as a spring which holds the socket to the anvil. Sometimes they need to be adjusted. You can try and compress the retaining ring slightly by using a channellock plier, adjust accordingly and squeeze slightly until you get the desired tension. If you still cannot attach the socket then you will have to replace the retaining ring and o-ring as a set.

Jun 14, 2014 | Air Tools & Compressors

1 Answer

Front axle removal

if it's already split in 2 removing it won't be too hard. You just need a very large impact socket (usually anywhere from 28 to 38 mm), a punch and a hammer, and a good prybar. The part that goes into the spindle need to be unlocked from the groover with the punch and hamme, in some cases you also need to remove the cutter pin, then just unscrew the nut using an impact wrench and the socket. If you don't have an impact wrench or your's isn't strong enough, a good ol' 2-3 foot bar will do the job if you can keep the wheel from spinning using a friend on the brake pedal, or if you can get access to the spindle nut without removing the tire and keeping the car on the ground. As for the the part that goes into the transmission, use the prybar to get it to come out of there, as it usually just stays in place with a snap ring. Make sure the snap ring is still on the shaft so it doesnt fall into the differential and ruin the gears when you put the new shaft back on. Putting the new shaft though will require removing the nuts holding the spinle in place usually to you can get clearance to put it all back in there. In most cases, just removing the ball joint from the spindle will be enough. And also after you put everything back into place, it might be a good idea to get the car aligned, as playing with the spindles can sometimes screw up alignement and cause premature tire wear.

Apr 04, 2014 | 1994 Buick Park Avenue

1 Answer

Strut to Steering Knuckle Bolts

I suggest not
it there are nuts then the bolts stay attached to one section
what are you using a breaker bar on if the nuts are already removed

Jul 22, 2017 | 1992 Oldsmobile 88 Royale

1 Answer

How to remove a rear end axle and change a rear wheel seal?

Remove the rear diff cover (use a pan under there's full of gear lube).Rotate the diff till you can see the pin that holds the spider gears in place. At one end of the pin, you will find either a roll pin or small bolt that retains it. Either drive the pin out or un bolt it (depends on what you have), then remove the pin. (careful when rotating carrier after it's out or, the spider gears will fall out. After it's out, DO NOT rotate the carrier or the same thing can happen. Dont turn the driveshaft or axle). Push the axle in and the "c" retainer on the axle will fall out. If not, help it a bit so it does. You can then remove the axle and access the seal.
After the seal is out, check to make sure there isn't any metal debris behind it. That indicates that not only the seal is bad but the bearing as well. Keep the new seal square with the axle tube so it goes in straight. Put some lube on the seal so it doesn't self destruct before lube reaches it. Remainder of the job is the reverse of removal. Don't forget to re-fill the diff before using it.

May 04, 2011 | 1991 Jeep Wrangler

2 Answers

I have just bought a Bosch GDS 18 E Impact Wrench second hand. My question is how do i keep the socket from falling off the anvil.

A hand ratchet wrench uses a ball to hold the socket on the shaft. Impact wrenches use a ring. The ring is needed for the high speeds.
There should be a groove on the end of the socket end. That groove should have a round or flat ring in it. That ring keeps the sockets from falling off. It is missing go to Bosch for a replacement.

Jan 06, 2011 | Garden

1 Answer

How to you keep the rod on a the tailgate from falling out of the handle?

there should be a retaining pin, if there's a small hole in the end of the rod and no pin in it, put a pin in it.

Jan 30, 2010 | 2005 GMC Sierra

4 Answers

My CP 734 has no power under load. Is there a rebuild kit to fix this problem and where can I get it? If a kit is available, is that a difficult rebuild? Tim

I used to repair these impacts for a living. Simplest first thing to do is back off the three 1/8" set screws in the back a couple turns. Pour a little varsol into the air inlet and plug it in. run the gun until your hand is black, (wear a glove). Once the varsol stops disconnect the air, add a few drops of air tool oil and tighten the screws slowly and evenly. You will hear the impact rpm increase. If your gun doesn't speed up to it's original scream you will have to remove the four 5/32" set screws and see what's worn. To open it hold the impact by the nose 3" off the table and position a center punch in the hole of the anvil shank with the same hand and hit it with a hammer hard enough to overtake the spring. The guts should drop on to the table in tact. The guts are in twp parts, the hammering mechanism, and the air motor. The three 1/8" screws hold the motor together. You will soon see the problem. Take the back off the air motor and it will show your if the veins are worn. Cjeck the end plates for wear. You can turn the end plates down on a lathe if available. As a rule of thumb, if the anvil shank is dry buy a repair kit, if it's wet, buy a tune-up kit. If the ring on the anvil shank doesn't turn, buy a repair kit and change your sockets. When rebuilding these front seal often leaks. These impacts are supposed to use 30 weight oil, but a mix of Ingersol Rand grease and 30 weight oil, ( just till it's slightly runny) will stay much longer. Assembling the anvil assembly can be tricky until you figure out how to hold the shank and two pins with the same hand. Good luck.

Dec 04, 2009 | Chicago Pneumatic 1/2" Air Impact Wrench

1 Answer

If clip (in 2001 Astro rear axle) does not fall out, how do you remove it?

Remove the retaining pin[usually a 8mm socket fits them],then push in on the right rear wheel and rotate it.It should then fall out but if not they can be removed using a magnet.

Nov 25, 2009 | 2001 Chevrolet Astro

2 Answers

My impact wrench wont engage to the socket.

I have the same problem, brand new impact wrench, brand new impact sockets, but can't get a socket onto the gun. Leaned on it with all my weight, wiggled, nothing. and yes they are both 1/2" drive. WTH?

Nov 21, 2009 | Craftsman 1/2" Impact Wrench

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