SYNCHRONIZER HIGH AND INTER GEAR T84
Synchroniser Assembly for T84 Gearbox (2nd and 3rd Gear)
Complete with blocking rings, shifter plates and springs for smooth gear changes
Complete synchroniser assembly for the T84 gearbox as fitted to Willys MB and Ford GPW (1941-1945). Synchronises second and third gear for smooth shifting whilst driving. Contains all components: synchronizer hub, sleeve, brass blocking rings, shifter plates and springs. One synchroniser required per vehicle.
Application T84 Transmission 2nd/3rd gear synchronizer | Suitable for Willys MB (1941-1945), Ford GPW (1941-1945), Hotchkiss M201 |
Original number WO-A-6318 (Willys-Overland) | Contents Hub, sleeve, 2x brass blocking ring, shifter plates, springs |
Features
- Synchronises 2nd and 3rd gear (1st gear is not synchronised in T84) Complete with all internal components for direct fitment Brass blocking rings for durable friction action on gear cones Shifter plates and springs supplied to TM 9-1803B specifications Replaces worn or damaged synchroniser assemblies Essential component for correct gear change operation of the T84 gearbox
★ The T84 gearbox has synchronisation on 2nd and 3rd gear only — shifting into 1st gear is only possible when stationary. Worn blocking rings cause heavy gear changes and bronze swarf in the transmission oil. During fitting, observe correct adjustment of mainshaft endplay (0.006-0.008 inch) for optimal operation.
📖 From the Technical Manual
Mounting
- 1. Remove snap ring from mainshaft and slide synchronizer assembly off 2. Fit blocking ring onto 2nd gear cone 3. Slide synchronizer hub onto mainshaft with long side facing forward 4. Place second blocking ring in synchronizer and install main drive gear 5. Secure with snap ring and check smooth operation of shifter sleeve
Specifications
- Type: 3-speed synchronized transmission model T84J Synchronisation: 2nd and 3rd gear (1st and reverse not synchronised) Blocking rings: brass, must fit tightly on gear cone without bottoming Recommended oil: SAE 80/90 GL-4 gear oil (safe for yellow metals)
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 |
| Ford GPW | 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)
