Bobcat Hydrostatic Pump Issues. Troubleshoot, Diagnose, and Repair.

This Bobcat S250 had hydraulic pump issues which caused a dangerous situation. I also made the wrong diagnosis while troubleshooting.

https://www.4tetradgroup.com
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Tools We Use:
Hydraulic Cylinder Spanner https://amzn.to/3SAlHYw
Another Spanner Option https://amzn.to/3LR1JFb
Hydraulic Seal Clasper https://www.4tetradgroup.com/shop/p/s...
Hydraulic Seal Stretcher https://www.4tetradgroup.com/shop/p/p...
Injector Block Off Cap https://www.4tetradgroup.com/shop/p/d...
Bobcat Fuel Filter Bowl Wrench https://www.4tetradgroup.com/shop/p/f...
Wrench Extender https://amzn.to/3Yt2yvl
Spring Compressor Tool https://amzn.to/4fA030n
Hydraulic Seal Installation Kit https://amzn.to/3Yrs6sV
Hand Impact Tool https://amzn.to/3Sz0yOk
Common Rail Fuel Injector Test Kit https://amzn.to/4dasD6T
Injector Leak Back Test Kit https://amzn.to/46Btf3i

Electrical Supplies:
Milwaukee Solder Iron https://amzn.to/4dpp0cY
Tesa Harness Tape https://amzn.to/3SAdG60
X Fasten Harness Tape https://amzn.to/4cbItNA
Non-Insulated Terminals https://amzn.to/4dp18XH
Short / Open Tester Power Probe https://amzn.to/3WRdrpu
Power Probe Master Kit https://amzn.to/3WPETUR

Shop Supplies:
Gloveworks Nitrile Gloves https://amzn.to/3WADdwW
Oil Absorbent Pads https://amzn.to/4ckYq48
Absorbent Pads https://amzn.to/3WOX64P
Brake Cleaner (Its Really Good) https://amzn.to/3yse3sA