Spring used to apply tension to the tilt locking pawl. 1967 thru 1969 required two springs due to the tilt away function. 1970 and later required only one spring.
*NOTE* For tilt column service, you can contact Tony Augustine at 6t8cougarguy@gmail.com. Tony is a trusted colleague of WCCC and we've sent many customers his way since our column specialist retired last year.