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 Oring. Once complete, the jack worked as if new.

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Tools:

Jack https://amzn.to/2IEl2Va
Jack Oil https://amzn.to/3s9Orsf
Metric ORing Kit (Use No. A008) https://amzn.to/2JVNylS
6" 3/8 drive socket ratchet wrench https://amzn.to/2JQdjhK'>https://amzn.to/2JQdjhK
Jack sockets https://amzn.to/2JQdjhK'>https://amzn.to/2JQdjhK
Needle Nose https://amzn.to/2ZuYBar

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

00:00 Materials
00:18 Problem Description
00:27 Repair Overview
00:44 Disassembly
01:43 Oring Removal
02:14 Oring 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.