TM 10-4630-207-13&P
0029 00
2. Remove drive belt guard (figure 1, item 3) to inspect condition of drive belt.
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1
3
Figure 1. Inspecting Drive Belt
ADJUST
1. To adjust the drive belt, proceed as follows: Loosen but do not remove the 1-inch vacuum pump inside
mounting bolts (figure 2, item 1).
2. Loosen but do not remove the 1-inch vacuum pump outside mounting bolts (figure 2, item 2).
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1
Figure 2. Vacuum Pump Mounting Bolts
3. Loosen the belt adjuster mechanism (figure 3, item 1) locknut (figure 3, item 3).
4. Turn adjusting nut (figure 3, item 2) to the right to tighten the drive belt.
5. Tighten drive belt (figure 4, item 1) until -inch of belt deflection is measured.
0029 00-2