Causes of Manual Transmission Failures — A Technical Guide
Dan the Gear Man breaks down the most common causes of manual transmission failures — from bearing wear to gear tooth damage, synchronizer problems, and what causes catastrophic failures.
Dana Spicer Rear Axle Component Failures — Dana 60, 70, and 80
Common failure modes in Dana Spicer Model 60, 70, and 80 rear drive axles — bearing wear, seal failures, pinion problems, and differential issues. What to look for and why.
Dana 44 Differential Tech Notes — 1953 to 1993
Technical notes on Dana 44 open differentials from 1953 to 1993 — how they work, wear patterns, common problems, and what to check during service.
Defects in Imported NV4500 Cast Iron Tailhousings — What We Found
Dan the Gear Man documents defects found in imported NV4500 cast iron tailshaft housings — runout problems, interference with transfer cases, and how to check yours.
NV4500 5th Gear Failures — Why They Happen and How to Fix Them
Dan the Gear Man explains why NV4500 5th gear failures happen — the real root cause behind nut failures, full spline shaft problems, and what actually works to prevent them.
NV4500 Transmission Teardown Guide — Step by Step with Video
Complete NV4500 transmission teardown walkthrough with video. Step-by-step guide covering disassembly, inspection, and what to look for inside your 4500.
