63 Reinforcement Front Compartment Side 77 Reinforcement Rail Inner At Suspension Rear Panel 64 Spacers Front Wheel Suspension 78 Reinforcement 65 Reinforcement Front Compartment Side Opening Rail Outer At Suspension 79 Panel Rocker 66 Reinforcemenf Floor Pan Side Rail 80 Filler Toe Pan At Hold Down 81 Panel Front W 67 Rail Floor Pan Side Rail 82 Extension Fron Front 68 Reinforcement No 1 Floor Pan Bar 83 Panel Front W 69 Bar No 1 Floor f an 84 Extension Fron 70 Support Rocker To Pillar Hose Connector Panel Rear 71 Connector Rocker ToPillar Hose inner 85 Support Rear Mounting Fron 72 Connedor Rocker To Pillar Hose Outer 86 Nut Rear Susp 73 Cover Rocker Inner Front Heater 87 Retainer Rear Opening Mounting Nut 74 Panel Rocker Inner Front 88 Reinforcement 75 Panel Rocker Inner Center At Kick Up Sic 89 Cover Rear Se 76 Panel Rocker Inner Rear Heater Openini BODI GENERAL BOD The body design used on the 1961 Chevrolet Corvairs is of an integral all steel welded construction The over all rigidity of the body is drawn from each of the individual metal components which when welded together comprise the body shell assembly Panels forming the underbody area incorporate at tachment provisions for the power train and the suspension systems These panels therefore contribute the greatest amount of strength to the body assembly This type of integral construction eliminates the conventional independent chassis frame and has become UNDE GENERAL SERVICE INFORMATION Since each individual underbody component contributes directly to the over all strength of the body it is essential that proper welding sealing and rust proofing techniques be observed during service operations Underbody components should be rust proofed whenever body repair operations which destroy or damage the original rust proofing are completed Particularly critical are the enclosed box areas When rust proofing critical underbody components it is essential that a good quality type of air dry primer be used such as corrosion resistant zinc chromate It is not advisable to use combination type of primer surfacers ALIGNMENT CHECKING PROCEDURES The underbody assembly is comprised of frame side rails frame cross rails floor pan cross bars inner and Rocker Inner Center To 90 Reinforcement Rear Seat Pan At Kick Up Center Rocker Inner Front Duct 91 Brace Rear Wheel Suspension Outer Mounting Support ufer 92 Support Rear Wheel Suspension fo Floor Rail End Outer Mounting Support ieelhouse Upper 93 Plate Rear Body Hold Down Nut f Wheelhouse Lower Panel Mounting 94 Reinforcement Engine Compartment ieelhouse Lower Side Rail At Hold Down 1 Wheelhouse Lower 95 Filler Engine Compartment Side To Rocker Inner Panel uspension Outer 96 Reinforcement Engine Compartment t Side Rail Outer At Kick Up nsion Front Mounting 97 Reinforcement Engine Compartment iuspension Front Side Rail Outer 98 Rail Engine Compartment Side Rear Seat Pan 99 Spacer Engine Compartment Side Rail le At Bumper if Pan Reinforcement 100 Reinforcement Engine Compartment 1 Side Rail At Bumper r SHELL I CONSTRUCTION known as the unitized type of body construction Figures 10 1 and 10 2 illustrate the construction of the Corvair metal body shell Figure 10 3 illustrates the major assemblies subassemblies and various individual components that make up the underbody front end sheet metal and shroud assembly portion of the unitized body shell These illustrations primarily show construction details of the parts and are intended as a guide to parts nomenclature They do not necessarily reflect a breakdown of available service replacement parts RBODY outer rocker panels and other floor panel components The underbody is of all welded construction The slightest misalignment in the underbody can affect door front compartment lid station wagon back door and engine compartment lid fits Most important however underbody misalignment can influence the suspension system thereby causing many of the problems that arise from a suspension misalignment It is essential therefore that underbody alignment be exact to within 1 of the specified dimensions In the event of collision damage it is important that underbody alignment be thoroughly checked and if necessary realigned in order to accurately establish suspension steering and engine mounting locations There are many classifications of tools that may be employed to correct the average collision damage situation including frame straightening machines lighter external pulling equipment and standard body jacks CORVAIR SHOP MANUAL