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Rear Axle Bumper Change

Before 1954 on 1/2 tons, the frame rails were given a large arch as they passed over the rear axle housing. With a broken leaf spring or overloading the bed with too much weight, the frame rails will lower many inches before contacting an axle bumper. It was a system that worked for over 20 years on 1/2 tons when the frame rails were forced down toward the rear axle. A hard rubber axle bumper was placed under the hump in the frame to prevent metal to metal contact when this occurred.

For 1954 a totally redesigned pickup bed resulted in a three inch increased depth of the bed for more load volume. Some of this increase required a lower arch in the frame rail over the axle. There would be less space here so the rubber axle bumper was changed in length and was moved to the side of the frame. See photo!

Therefore, this prevents a correct interchange between the 1949-53 1/2 ton frame and the 1954 and newer frame. If this is done the beds will not have the correct relationship to the height of the cab.


1954 to 1965

1947 to 1953

1954 to 1955

1954 to 1955

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