How to Fill, Bleed, and Replace O-Rings on a Trolley Jack

Oliver Porter
Oliver Porter
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0
Published 2021-01-08
My Pittsburgh trolley jack ran out of oil after several years and barely worked (no lifting when pumping). Here is how to fill the reservoir with jack oil, bleed the reservoir, and replace the main piston O-ring. Once complete, the jack worked as if new.

Amazon Affiliate Links:

Tools:

-Jack amzn.to/2IEl2Va
-Jack Oil amzn.to/3s9Orsf
-Metric O-Ring Kit (Use No. A008) amzn.to/2JVNylS
-6" 3/8 drive socket ratchet wrench amzn.to/2JQdjhK
-Jack sockets amzn.to/2JQdjhK
-Needle Nose amzn.to/2ZuYBar

CAMERA amzn.to/3i3bfVL
LENS amzn.to/3g2DX7h
TRIPOD amzn.to/2NB3MPE
FLUID HEAD amzn.to/2VriA7L
CAMERA2 - amzn.to/3d1w7su

00:00 Materials
00:18 Problem Description
00:27 Repair Overview
00:44 Disassembly
01:43 O-ring Removal
02:14 O-ring Replacement
02:45 Oil Fill
03:11 Assembly

Disclaimer:
Due to factors beyond the control of Oliver Porter, I cannot guarantee against improper use or unauthorized modifications of this information. Oliver Porter assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. I recommend safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Oliver Porter, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Oliver Porter.
All Comments (21)
  • @shriramvenu
    thanks so much! I was having a problem with a leaky jack. Now at least i know its possible to repair. will give it a try!
  • @Rlksr52
    Great video. Extremely helpful. Well done and to the point. I appreciate your video immensely for not wasting time.
  • @robertwittjr1198
    as long as i have been working on automotive repairs, i have never thought about this untill now. my wife recently started driving my dad's 2006 ranger, and during our overall assement of "things to fix" we discovered the floor jack he keeps in the bed does not go past half way. ok, needs oil; BUT it is leaking fluid past the piston. followed your instructions to remove side plate, and realized this; the cast "tower" that the device locates on for the pump handle is NOT CENTERED ON THE MAIN PISTON BODY. my piston body is offset to the left, yours is to the right. if you put the side plate back on, you can easily insert the pins from the side that has the greater offset "more space". that puts the retaining pin end on the side that has the assist spring to pull the jack down when you release pressure, but there is enough room that it does not touch. that way, if this happens again, you don't have to remove the side panel again since the pins now have clearance to be removed. great video, i learned something today. ADDED BONUS my 14 year old son helped me get the 18mm nuts loose (needed help, recovering fron knee surgery) and he laughed; "dad why did they do it the hard way, there was room from the other side". exactly, son. thanks again, robert and son
  • @donyvette3496
    Great vid! To the point and helpful. Going to try this on my old trolley jack w similar problem.
  • @arontesfay2520
    I would also replace the O-ring in the release valve. It started leaking first on my trolley jack.
  • @swensonj69
    For others (like myself) that were confused about the O-Ring. He uses the P8 Metric O-ring in the video. Not the A008 SAE O-ring. Also, if you have a Harbor Freight nearby pick it up there and save yourself a bunch of money.
  • @frankrobinson5453
    Great video!! Although it did drive me nuts when you called the cresent wrench a channel lock. My problem was slightly different in that it would not jack up, but also was not leaking any fluids. Your comment about jacking the pump 20 times with the valve open fixed my problem. Now my jack lifts again. Thank you so much for the great vid.
  • @28illustrator
    having trouble with brand new jack. The release valve wont turn left or right so the jack wont raise. any ideas?
  • @johnnybrowning470
    What you're calling channel locks, we commonly refer to that as an adjustable wrench
  • @bobomomo3764
    That's a perfect tutorial thank man P8 is solved ✅ Do u know the other O-rings sizes for this jack? ☺️💛
  • @treborterb
    I think that the tool you are calling a channel lock is really a crescent wrench???
  • @thedude4795
    i was looking at ordering an o-ring replacement kit for my jack, but price + shipping wouldve cost me One Hundred Smackaroo's ($100) needless to say I'm just buying a assortment of o-rings like you have in this vid.
  • @Hwolf777
    The correct o ring size is 7/16” o.d. X 1/4” I.d.