HUB DRUM FRONT OR REAR
WOA1691
Hub Drum Front or Rear
9" x 1¾" brake drums
Replacement hub drum suitable for use on both front and rear axle. This 9-inch brake drum mounts on the outside of the hub, conforming to original specification for WWII-period military jeeps and early civilian models.
|
Size 9" x 1¾" |
Mounting Outside of hub |
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Application Front and rear wheels |
Fastening Via wheel studs |
Features
- 9-inch brake drum front or rear
- Mounts on outside of wheel hub
- Replaces worn or distorted original drums
- Identical front and rear (4 pieces required per vehicle)
- Compatible with standard 9" x 1¾" brake system
★ Replacement part to original specification for 9-inch drum systems on WWII military vehicles.
Installation notes
The hub must be hydraulically pressed onto the drum with adequate support. Note: on some hubs, the centre bore may need to be machined by a few thousandths for correct fitting. The drum is held in place by the wheel studs which protrude from the inside through the hub. After installation, new drums may require light machining for perfect concentricity with the hub.
Compatibility
CAUTION: Two different mounting methods exist for 9-inch drums: (1) Drum mounts on outside of hub (wheel studs protrude from inside outward through drum) — used on early MB/GPW/CJ-2A, (2) Drum mounts on inside of hub (original number A-472) — used on some late models. Check your existing set-up before ordering. This is the outside-mounting version.
Historical context
The 9-inch drum brake was standard on the Willys MB and Ford GPW during WWII production. Original drums were supplied by manufacturers including Bendix and Kelsey Hayes, with casting markings varying by sub-supplier.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
⚠ Spotted an error in this description? Report it to info@willys.be
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.
ALL_CATEGORIES : GROUP 10 - FRONT AXLE MB, GROUP 11 - REAR AXLE, GROUP 13 - WHEELS CJ3A, GROUP 13 - WHEELS CJ3B
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 (early) | 1956, 1957, 1958, 1959 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |
| Willys M38 | 1950, 1951, 1952 |
| CJ series | |
| Jeep CJ-2A | 1945, 1946, 1947, 1948, 1949 |
| Jeep CJ-3A | 1949, 1950, 1951, 1952, 1953 |
📐 Diagrams & technical drawings
From the original Technical Manual CJ2A_PL_1949 — Parts List — only for Willys CJ-2A / CJ-3A (1949)
From the original Technical Manual TM 9-1803B — Ordnance Maintenance — Power Train, Body & Frame — only for Willys MB / Ford GPW (¼-ton 4×4)
