TM 5-3805-260-24Differential and Bevel GearWith Differential Lock (Cont.)9. Use the procedure that follows to check tooth contact.a. Put a small amount of Prussian blue, red lead, or paint on thebevel gear teeth.b. Turn the pinion shaft in both directions and check the marks madeon the bevel gear teeth.c. See the illustration for the marks of the correct tooth contact.10. If the marks on the bevel gear look like the marks in Illustration A,use the procedure that follows:a. Remove some of shims (5).b. After some of the shims are removed, do Steps 6, 7 and 8 again.c. Check tooth contact again.11. If the marks on the bevel gear look like the marks in Illustration B,use the procedure that follows:a. Install more of shims (5).b. After more of the shims are installed, do Steps 6, 7, and 8again.NOTE: Several adjustments may be necessary before the tooth contactis correct. Free movement (backlash) must be correct before toothcontact can be checked.1-47
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