397 fails to pump up !!
For the first time in it's existence my 397 (which I purchased in the early 90's for a mere $60.00) will not pump up. I still enjoy this little rifle and certainly intend to repair as needed. Being it was a re-manufactured unit with a 30 day warranty I believe it has held up it's end of the deal.
I would much appreciate recommendation for parts source and tips on repair. Does anyone do a one size fits all rebuild kit for these little rifles?
Well, it might be a bit premature to start shopping for reseal kits.
First I'd try a healthy squirt of oil applied to the air intake hole -- you know -- where it says "Do Not Oil?" followed by a few vigorous pump strokes and dry fire. Lather, rinse, repeat.
It's often possible to flush out a clot of contamination that's preventing an otherwise healthy seal from working, and get a pumper back in service with (virtually) zero cost and effort.
Worth a shot.
Steve, oil was the first thing I tried, no glory. I was surprised to see I actually purchased in 03/2003. I've ordered a rebuild kit from PA. I found an old post where you had offered up a drawing of how to make it pump easier, the drawing had been taken down. Would appreciate it if you could post that up fresh. I'd like to make the mod while I have this thing a part, Cheers, Ray
The year of manufacture might play a role in the rebuild kit, seal(s), or o-rings needed.
Mine ( a '96 397pa) was like new and just old so it was confusing in how it would
skip pumps and hold some...
It turned out to be just the o-rings on the outside of the valve body.
I replaced them and left the body unscrewed a turn (as tight as I could get
it back together without tools anyway,) and that sealed it and also reduced headspace.
Got this thing all to pieces to night with no issues, one can easily see all the rubber has hardened and is likely the cause of the issues. I found an exploded view that indicate manufacture dates between 10/04/07 and 03/27/2013. It appears to be like my gun. With a little luck and a tune up kit I should have it back in service shortly. Cheers, Ray
Steve, interesting, I had though about exactly the opposite on the other end to obtain a larger dump from the firing cycle for more power. I would assume you have also tried a softer wound spring to obtain both results?
thanks, looks like a good cold weather tinkering project, Cheers, Ray
Go Trump !!!!