BUMPER BOLT TORQUE

In order to obtain satisfactory results with a bumper jack it is imperative that the bumper back bar to frame bolts be torqued to recommended figures. Loose bolts at these points will allow the bumpers to twist upward far enough to make rear wheel removal difficult or even impossible.

Correct torque specifications for 1951 models are as tallows:

1951 Buick Bumper Bolt Torques

1951 Buick Bumper Bolt Torques

 

BUMPER GUARD BRACES

A change has recently been made in- the design of the front bumper outer guards (bombs) to frame braces. The new brace can best be described as a “straight type” and is interchangeable for use on the right and left sides. The former type was provided in “right” and “left” designs.

In connection With this change the bumper guards were provided with a .438″ dia. hole and weld nut for brace mounting. The front lower portions of the front fender skirts were also modified to accommodate the straight type braces. No current part numbers were affected by this change except for the brace and mounting bolt. These are as follows:

1951 Buick Bumper Guard Braces Parts

1951 Buick Bumper Guard Braces Parts

The old type braces will not be available for service; therefore, some reworking will be necessary when installing the new straight type braces on 1951 jobs built prior to this change. This procedure is as follows:

  1. Locate and drill a 13/32″ dia. hole in the bumper guard as shown in Figure 31.
1951 Buick Install Bumper Guard Braces

1951 Buick Install Bumper Guard Braces

  • Enlarge the brace cut-out in the lower part of the front fender skirt to accommodate the new type brace. (See Figure 31)
  • Install the brace, using a 3/8″ bolt and lock washer as listed in the parts data above. It will also be necessary to use a nut since the weld nut is not present on first type bumper guards. A completed installation is shown in Figure 32.
    • 1951 Buick Install Bumper Guard Straight Brace

    1951 Buick Install Bumper Guard Straight Brace