Due to the difference in design of the front cross member in trucks built between August 15 and November 1, 1928, the new engine front support assembly A-6029 cannot be installed in trucks built during that period.

The new support can be installed in all trucks which have a flat pocket in the center of the front cross member as shown in Fig. 625.

The support cannot be installed in trucks in which the front cross member forms a radius at the center, see "A," Fig. 625.

The location of several of the front cross member holes in the truck frame side members have been changed. This makes it necessary, when installing a front cross member in trucks, built prior to November 1st, 1928, to install cross member AA5020AR, in order to insure that the holes in the cross member line up accurately with holes in the frame side members. It will of course be necessary to install the new engine front support assembly when replacing an old cross member with an AA5020AR. In cases of this kind the customer must not be charged for the front support.