TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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1. Position drive gearshaft ball bearing (A) on drive gearshaft. 2. Carefully press ball bearing on gearshaft. Figure 6-192. Pressing drive gearshaft ball bearing on drive gearshaft. 1. Position advance vane housing (A), with vane and seals (fig. 6-183), on advance vane housing cover. 2. The alinement dots on gearshaft spline (B) must aline with the dots on the vane spline (C). 3. The vane must have end clearance of 0.00l-inch. If vane splines (C) have a snug fit on the accessory drive gearshaft splines (B), insert a 0.001 inch feeler gage between vane and vane housing cover. Gently tap vane until proper end play is obtained, then remove feeler gage. 4. Mate dowel pin holes (D) in vane housing with dowel pins (E) in cover and housing bolt holes (F) with cover bolt holes (G). Tap housing lightly with a soft hammer to seat dowel pins. Note. Dowel pins and dowel pin holes will aline in two positions. However, the bolt holes in cover and housing will aline in one position only. Make certain that cover and housing are correctly positioned so that bolt holes are alined. Figure 6-193. Installing advance vane housing and vane. 6-161