Hydraulic Filter thread info

[OrangeJalopy]

Hi everyone
I’m doing a long overdue major service on my B7100d. Ran into an issue where the old hydraulic filter was cross threaded in the housing. Does anyone have any suggestions on how to clean up the threads? Was thinking a thread chaser might do the job, but im not sure what size and pitch the threads are. Thank you in advance for any help.

 

[Nicksacco]

I looked up what I think your part is - is this it?

It looks like a large thread (1" ??) and I would suspect a machine shop in your area would be able to tell you what thread it is if you take that filter assembly with you.

After that, you should be easily able to find a tap to repair the thread.
It doesn't look that damaged from what I can tell.

I'd recommend changing the oil after you tap to get out any metal from the tapping process if you don't remove the housing. But that is what the filter is for too.

 

[TheOldHokie]

Hi everyone
I’m doing a long overdue major service on my B7100d. Ran into an issue where the old hydraulic filter was cross threaded in the housing. Does anyone have any suggestions on how to clean up the threads? Was thinking a thread chaser might do the job, but im not sure what size and pitch the threads are. Thank you in advance for any help.

Those things are easy to cross thread and aluminum buggers easily.

I do not know for a fact but my guess is that's BSPP. Break out your trusty digital caliper and measure the OD and consult a BSPP thread chart. If it matches buy a cheap BSPP tap and carefully recut the threads.

Dan

 

[Fedup]

I would also suggest you loosen the hose connection on the suction tube before you attempt to put the screen back in. If you break the hose loose and gain some freedom of movement on the banjo end you may have an easier time getting the screen threaded back in without cross threading it again.

 

[D2Cat]

When opening up fittings on your tractor it's always a good idea to clean around the area before removing components. Just good maintenance practice!

 

[6869704x4]

Putting some grease on your tap will help catch some chips when you run it in there.

 

[DustyRusty]

I believe that a rethreader would be less expensive than a tap if one is available. The difference between the rethreader and a tap is that the rethreader will reshape the threads whereas a tap will cut new threads. One will save the metal loss and both will save the day if they work. I have made re-threaders out of bolts by cutting a V groove in them with a square file and they have worked well in soft metal like aluminum. The trick is getting them started squarely with the old threads.

 

[6869704x4]

I believe that a rethreader would be less expensive than a tap if one is available. The difference between the rethreader and a tap is that the rethreader will reshape the threads whereas a tap will cut new threads. One will save the metal loss and both will save the day if they work. I have made re-threaders out of bolts by cutting a V groove in them with a square file and they have worked well in soft metal like aluminum. The trick is getting them started squarely with the old threads.

I agree, I said tap but some rethreaders are refered to as taps. I should have made that clear. A rethreader is prefered.
Ha, I've done the same thing cutting grooves in bolts. Works in a pinch.

 

[OrangeJalopy]

Hi all,

Just wanted to thank you all for the feedback. I was able to get a set of thread chasers on amazon for about $20. Seemed to do the trick and everything went back together fine and there is only a very minor leak. Which is probably from the o ring moving out of place when everything got tightened. Thanks again for all the help

 

[DustyRusty]

I sometimes use Vaseline on O-rings, so the cover can slide as it is being tightened. If the O-ring is dry, it might get pushed to the side as the cover is being tightened. It is one of those things that you can put together 10 times with no problems, but the 11th will be nothing but problems.