To lessen the possibility of the radiator bolt spring compressing to such an extent that it would take a permanent set, the length of the spring has been slightly increased. The new spring is carried under part A–8130–B. The old design short spring A-8130-A (see Fig. 893) has been obsoleted.
Changing the length of the spring also necessitated changing the length of the radiator to frame bolt from 1 3/4” to 2″. The 1 3⁄4″ bolt A-20913 has been obsoleted. The new bolt is carried under part A-20975.
If, after present stocks are exhausted, calls are received for either an old style bolt or spring, it will be necessary to supply both the new style bolt and spring.