Input Shaft Assembly

Installation of the Intermediate Shaft - cont - TM-5-3820-256-24-5_514

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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G. Input Shaft Assembly Refer to Page PM2 and Page PB6 1. Place the direct drive gear (Item 22), with bearings (Item 11) and spacer (Item 13) previously installed, in the housing against the back wall. The gear will mesh with the gear on the intermediate shaft and rest against the side wall of the case housing. 2. Insert the direct drive gear clutch (Item 10) in the direct drive gear (Item 22). 3. Insert the non-threaded end of the input shaft (Item 21) into the case housing from the front of the case. The shaft should project into the case between 3/4" and 2" and the shaft may rest against the bottom of the input bearing bore of the housing. 4. Slip the underdrive pinion gear (Item 19), with projecting face toward the shaft, onto the end of the shaft. 5. Slide input shaft through the underdrive pinion gear and into the direct drive sliding clutch (Item 10). When splines come into contact with the pinion gear, align splines, continue shaft installation, align splines with splines in underdrive gear sliding clutch (See Fig. 30), and again continue sliding shaft into place through the bearings (Item 11) and gear (Item 22). Slip spacer washer (Item 23) (. 06 thick) over rear end of input shaft. 6. Slide input shaft front (Item 18) and rear (Item 24) bearings onto the input shaft. Tap into the case housing bores and into place on the shaft with a suitable driver. 7. Push the input shaft as far to the rear of the case housing as it will go. Push the underdrive pinion gear toward the front of the case. 8. Install the split retaining ring (Item 20) in place in the half round groove that should now be exposed (See Fig. 31). 9 Install the input seal carrier gasket in place on the front of the case housing and install the input seal carrier seal assembly in place. Permatex the mounting screws and tighten to the specified torque (See Fig. 32). 10. Apply Lubriplate to the seal area and the splines of the input yoke. Install the yoke on the front of the input shaft. Put yoke retaining washer (Item 2) onto the shaft with the side that faces the input yoke lightly coated with Permatex. Install the input yoke retaining nut (Item 1) and tighten to specifications. Fig. 30 Fig. 31 Fig. 32 -22-

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