Model 734 1/2 in impact.wont blow air ,wont rotate,no tension on trigger.feel like problem may somehow be in trigger housing....

If you are still looking for this part I would call power tool repair at 330-630-0022 and order that part number. From the breakdown it seems you have the correct part number

I would call A-1 Hydraulics at 770-907-0013

If debris enter the gun, over time the vanes will not move into proper positon and react to air-flow. Vanes can become stuck if stored for long period of time. Pour small amount of diesel fuel into the gun and activate the trigger. The fuel should come out clean, if however black gunk comes out, keep adding fuel until gun is clean. Eventually all the the debris will be washed out and restore function. Good luck

It will require new seals fitted by a repairer. It's not a DIY

Please rate my help++++hanks for using FIXYA

I have used water valve stem packing inthe past with success. Get it at your ace Hardware store.

Put 4 or 5 drops of oil into the air line opening. Connect an air supply and burst the trigger a few times. The settings are 1-less 4 more. It's all up to the application and they are not specific settings.

Check the following website. It is a pdf file, so you will need Acrobat Reader, which is available on this website. After it loads, it lists various CP model numbers on the left side, so scroll down to 734 and click on it( it says 734 OBS) and it will open an exploded view of the breakdown of the CP 734 impact wrench. On the Acrobat toolbar, you can expand the picture as much as you want to and print it.

Good Luck!

The problem is in the trigger valve and is a very common problem with these and other brand, some even do that when new! Most people just live with it but you can dissassemble the gun and try.

Dave The rotor is too tight on the plate. Tap shaft with fiber mallet to open the clearance