TM 5-3805-258-24-195t)B POWER TRAINSPECIFICATIONS11.12.13,Differential and Bevel Gear(Cont.)ILLUSTRATION AMeasure in the backlash between the ringgear and pinion again. The backlashmuststill be . . . . . . . . . . . . . . . . . . . . .0.20to .43 mm (.008 to .017 in.)If backlash is too much,loosen adjustment ring (1) andtightenadjustment ring(14) the same amount.If backlash is not enough, loosen adjustment ring(14)andtighten adjustment ring(1) the same amount.NOTE: The differential preload will be kept onlyif one adjustmentring is loosened and the other adjustment ringis tightened thesameamount.14, After the backlash and preload adjustments have been made,the tooth contact between pinion (10) and ring gear (12)mustthen be checked. Do the procedure that follows:a.b.c.Put a small amount of Prussian blue, red lead or paint onthe teeth of ringgear (12).Turn pinion (10) in both directions.The correct area of tooth contacts starts near the inside endof the teeth of ringgear (12) and goes a maximum of 50 per-cent of the length of the teeth. See Illustration A for anexample of the correct area of tooth contact.15. If the marks made on the teeth of ringgear (12)look like themarksin Illustration B, do the procedure that follows:a. Remove some of shims (5).b. Do Steps 9 thru 13 again.c. Do Step 14 again to check the area of tooth contact.16. If the marksmade on the teeth of ringgear (12)look like themarksin Illustration C, do the procedure that follows.a. Addsome of shims (5).b. Do Steps 9 thru 13 again.c. Do Step 14 again to check the area of tooth contact.NOTE: Always make sure the backlash adjustment is correct beforean adjustment is made to the area of tooth contact. Several adjust-mentsto the backlash and tooth contact maybe necessary to getthe correctadjustments.17. After adjustments are made,remove the Prussian blue, redlead or paintfromthe gears.ILLUSTRATION BILLUSTRATION C2-42
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