BALL&SPRING SHIFT RAIL POPPET T84
WO635838
Detent ball & spring shift rail poppet T84 gearbox - set
Original specification locking set for shift rails - 2 pieces required per T84
Complete set consisting of poppet ball and spring for the shift rail locking mechanism in the T84 gearbox. This detent combination ensures that gears remain correctly in position and prevents the box from jumping out of gear. Essential component during any T84 overhaul.
Application T84 transmission shift rails (2 sets per vehicle) | Suitable for Willys MB / Ford GPW (1941-1945) |
Original number 635838 (ball) + 635837 (spring) | Set contents 1x poppet ball + 1x detent spring |
Features
- Detent ball and spring for shift rail locking in T84 gearbox 2 sets required per vehicle (one per shift rail: 1st/reverse and 2nd/3rd) Prevents gearbox from jumping out of gear during operation Always replace both sets simultaneously during T84 overhaul - corrosion is common Original US Army specification per TM 9-1803B
★ CAUTION: Check during installation that only ONE spring sits beneath the ball. Some mechanics previously used an additional half spring to prevent the box from jumping out of gear - this is incorrect and can cause stiff shifting.
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 (early) | 1942 |
| 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)
