p.Install the cover (3) in position; move back and forth until the cartridge pins (11) drop into the cover holes. Oiland install the cover-to-body bolts (2). Torque to 70 inch pounds. Turn the pump shaft by hand to verifyfreedom of the cartridge.q.Install the pump on the power take-off flange and fasten it with its two mounting bolts. Torque the bolts to 75inch pounds. Connect and tighten the hydraulic hoses.4-20 MAINTENANCE OF FRAME COMPONENTS4-20.1 DrillPlatformAssembly (Figure 4-48).Unhook the double end snap (5). Remove the center platform (6); then remove nuts (1, 2), lockwashers (3), andbolts (4) to remove drillers platform (7) and helpers platform (8).Clean the platforms frequently to prevent excessive build-up of mud. Use a wire brush to remove corrosion orrust; repaint as necessary. Repair minor damage by welding; replace platforms if major damage has occurred.Hold the platforms (7, 8) in place and fasten to the rig with bolts (4), lockwashers (3), and nuts (1, 2). Finally,place the center platform (6) between the other two. Hook up the double end snap.4-20.2 MudFlapAssembly.If mud flaps are worn, damaged, partially gone, remove their fasteners (bolts, washers, and nuts) and replacewith new flaps. No other maintenance is required.4-20.3 FrameAssembly.Keep the rig as clean as time will permit. Examine the frame components periodically for evidence of corrosion,rusting, broken welds, dents, or other damage. Hammer out any minor dents or bends. Repair minor damage bywelding; remove rust and corrosion with a wire brush. Keep the rig well-painted at all times.4-185
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