Fix u-joint glasses sizes repair on manual lathe machine with alterations step by step tutorial

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Universal Joint Glasses Sizes Repair on Manual Lathe — Step-by-Step with Alterations
00:00 Intro — What we’ll fix and why
00:40 Tools & Materials
01:30 Measure existing glasses / identify wear
03:10 Marking & machining plan
04:20 Turning the journal / resize steps
07:15 Making alterations
09:30 Test fit & final adjustments
11:00 Assembly, grease & finish check
12:00 Final tips, common mistakes, and wrap
Learn how to repair and resize universal joint “glasses” on a manual lathe — accurate measuring, turning, and simple alterations to restore a solid press-fit. Perfect for mechanics, tractor owners, and DIYers.

Tools & Materials
Manual lathe
Dial caliper & micrometer
Steel punch/center punch
Cutting tool
Parting tool & file
Reamer
Arbor/fixture or custom jig for press fit
Press or arbor press
Measuring protractor / angle gauge
Cutting fluid & abrasive papers
Grease & assembly clips/circlips
Safety gear: gloves, eye protection, ear protection

Step-by-Step Overview
1. Inspect the U-joint glasses and cups — measure OD/ID, width, and worn surfaces.
2. Remove the spider safely and mark reference points.
3. Mount on lathe fixture or arbor; set centers and dial indicators to ensure runout mm.
4. Turnjournal down the OD gradually to the target size
5. Machine shoulders/chamfers for easier cup fit and correct clearance.
6. If cups need reaming or reshaping, do it with light cuts — keep concentricity.
7. Test-fit cups and spider; use arbor press to ensure proper interference/press fit.
8. Clean, pack with grease, fit circlips, and test rotation under load.

❗Safety & Pro Tips
Always secure the part — any slip on the lathe is dangerous.
Use light cuts for finishing dimensions; measure repeatedly.
Keep runout under control — misalignment causes vibration and fast wear.
If the spider is badly damaged, replace instead of repairing — some damage is unsafe.

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Suggested video settings:
Category: Education or Howto & Style
Language: English
Thumbnail: close-up of U-joint being pressed on the lathe + bold text “U-JOINT FIX”
Suggested video length: 8–15 minute For longer live step-by-step, add time-lapse sections to keep pace.