The T.V. valve (component 11) and spring (component 12) shown in Figure 7B-13b on page 7B-29 of the 1984 Corvette Shop Manual are not shown as they would be in the correctly assembled position. Figure 13b below shows the correct locations for the T.V. valve and spring.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.