SHAFT MAIN TRANSMISSION T84
Main Transmission Shaft T84 (Mainshaft)
Original specification for Warner T84 gearbox
Main transmission shaft (mainshaft) for the Warner T84 3-speed gearbox in Willys MB and Ford GPW. The mainshaft carries the second gear, synchroniser assembly and first/reverse gear, and connects via the rear bearing to the transfer case. Essential component for correct gearbox operation and synchronisation.
Application T84 transmission | Vehicle Willys MB / Ford GPW (1941-1945) |
Transmission type Warner T84 3-speed synchronized | Compatibility Also M201 Hotchkiss |
Features
- Main transmission shaft to original Warner T84 specifications Carries second gear, synchroniser hub and first/reverse gear Connection to Spicer D18 transfer case via rear of shaft Use with rear mainshaft bearing (ball bearing), spacer and oil slinger Critical component for correct blocking ring clearance Material and dimensions to TM 9-1803B specifications Suitable for early and H-model T84 transmissions Requires correct adjustment with snap ring, spacer and shims
★ The mainshaft is the core component of the T84 transmission. Correct assembly with proper end play adjustment (blocking ring clearance) is essential for good synchronisation of 2nd and 3rd gear. The shaft is secured by the castellated nut on the transfer case gear with 80-110 ft-lbs.
This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |
📐 Diagrams & technical drawings
From the original Technical Manual TM 9-1803B — Ordnance Maintenance — Power Train, Body & Frame — only for Willys MB / Ford GPW (¼-ton 4×4)











