Steering pulls to the right

It's talking about reinstalling the valve body on the top of the steering box, but you'll get the idea.

from pages 19-10 and 19-12 (19-11 is a cut away drawing of the steering box) in the '76 factory service manual:

(15) Install two screws and tighten to 7 foot pounds to prohibit leakage during valve centering operation
(16) Connect high pressure and return hoses to the valve body.
(17) Start engine. If the unit is self steering, tap the valve up or down to correct.
(18) Turn steering wheel from stop to stop several times to expell air from the system. Refill reservoir as required.
Caution: Do not turn hard against ends of travel. This will generate high pressure and may blow out the "O" rings since the valve body screws have not been finally tighened.
(19) With steering wheel in straight ahead center position, start and stop the engine several times, tapping the valve body up or down as required intil there is no movement when the engine is started or stopped.
(20) The valve is now centered. Tighten the two screws attaching valve body to housing to 200 inch pounds.

Hope this helps.