Proper mainshaft disassembly is the foundation of any NV4500 rebuild. Rush through it and you'll miss the wear patterns, cracks, and damage that tell you what actually failed — and what's about to. This video walks through the complete teardown process.
What This Video Covers
Complete NV4500 mainshaft disassembly — snap ring removal, gear removal sequence, synchronizer inspection, and what to look for during teardown. This is the disassembly counterpart to our NV4500 Mainshaft Assembly post.
Mainshaft Tools
- QT2000 29-Spline Mainshaft Holding Socket Wrench — holds the mainshaft while you work
- QT2011 31-Spline Mainshaft Wrench — for 4x2 NV4500HD and NV5600
NV4500 Tech Resources
- NV4500 5th Gear Failures & Solutions
- Defects in NV4500 Cast Iron Tailhousings
- NV4500 Transmission Teardown Guide — complete teardown with video
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