T84 SPLINE SECONDARY SHAFT ADJUSTING SHIMS
Set of 4 side
JUAN
Shim washers for secondary shaft adjustment (T84)
Shim washer set for correct endplay adjustment of mainshaft
Shim washer set for adjusting the axial play (endplay) of the mainshaft in the T84 gearbox. These shim washers are fitted behind the spacer on the mainshaft to ensure correct positioning of the shaft and blocking rings. Essential for proper synchroniser operation and elimination of excessive play.
Application T84 transmission mainshaft endplay | Vehicle Willys MB, Ford GPW, M201 |
Function Axial play adjustment mainshaft | Type Shim washer set (various thicknesses) |
Features
- Shim washers for correct mainshaft axial play T84 Elimination of excessive play in blocking rings Used in professional T84 overhauls Various thicknesses for precise adjustment Prevents shifting problems in 2nd and 3rd gear Applicable to standard and H-case versions
★ Professional T84 mainshaft adjustment as applied by military workshops. Essential for correct synchronisation and gear shifting operation.
📖 From the Technical Manual
Mounting
- Install mainshaft with gears and bearings in case Fit suitable shim washer(s) behind snap ring and spacer on rear of mainshaft Secure rear bearing retainer or transfer case adapter Measure axial play with dial gauge or feel play between bearing and shaft Aim for 0.006" - 0.008" (0.15 - 0.20 mm) endplay Adjust shim washer thickness until correct play is achieved
Specifications
- Desired mainshaft endplay: 0.006" - 0.008" (approx. 0.15 - 0.20 mm) Measured between rear bearing and axial movement of mainshaft Insufficient play: overheating, seized gears, premature wear Excessive play: rattling gears, difficult shifting, oil leakage
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 (early) | 1956, 1957, 1958, 1959 |
| 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)









