D3 Dozer Hydraulic Repairs. Re-pack. Re-rod. CAT D3 Bulldozer.

Fixing the hydraulic problems on this old beast. 2 cylinders need repacked, and 1 of them needs a new rod. Hydraulic oil and filter need changed, and the sight glass needs cleaned. Let's get to work!

New hydraulic seal installation tool is in my amazon store here: https://amzn.to/3qL5eph
More on single point threading in this video: https://youtu.be/8LtE3GONtmk

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00:00 Intro to problems
1:05 Drain hydraulic oil
3:27 Cylinder #1 removal
7:25 Cylinder #2 gland nut
8:12 Finish cylinder 1 removal
10:20 Cylinder 1 teardown
13:54 Finish cylinder 2, not so easy!
20:16 Replacing rod on cylinder 1
42:33 Install new seals
49:42 Re-install cylinders
51:22 Sight glass and filter & oil
55:40 Testing, and about bleeding hydraulics
57:52 Repair summary & outro