SERVICE MANUALINSPECT CAB STRUCTURE FOR DAMAGEWith side panel removed, inspect remainder ofcab for damage. Look especially for and repair:1.Damage to cab sill welds.2.Loosening of floor panels.3.Underbody bent out of alignment. (This step canvary with each job. Keep in mind you are tryingto return cab to its original condition.)Reweld any cracked or missing welds. The sillside inner panel on the cab underbody must be straightand flat.ALIGN NEW SIDE PANEL TO CAB1.Position and clamp new side panel assembly toside of cab.2.Raise roof outer panel sufficiently to insertwindshield pillar top corner between inner andouter roof panels.3.Apply heat expanding type sealer (Plastisol orequivalent) to this seam.4.Align panels to establish windshield opening andinstall "C" clamps to secure.5.Align remaining joints at dash panel, cowl, roofpanel and back panel using "C" clamps to holdnew side panel in place.WELDING SIDE PANEL TO CAB1.Using MIG welder inside cab (Fig. 48), plug weldaround door opening through holes drilled out oforiginal cab panels during side panel removal.CAUTIONAdjust welder so as not to damage orburn sheet metal when performing thesewelds.2.Where drilled holes are not accessible such asat bottom of rocker panel, use 2.5 cm (1 inch)seam welds spaced 7.5 cm (3 inches) apart tosecure rocker panel to sill side inner panel.Fig. 48. Using MIG Welder For Plug Welds3.At inside of cab weld base of inner side panels tosill side inner panel (Fig. 49). Note: 80" widecabs do not use a seam weld at cowl seam jointbut have a panel extension on sill side innerpanel to be plug welded to inside of side panel.Fig. 49. Seam Weld At Inside Of Side PanelCTS-4065PRINTED IN UNITED STATES OF AMERICAPage 28
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