PRG Best Boy 4000 Service Manual page 96

Step 5. Remove Yoke Cover Mounting Bracket by removing four 8-32 x 1/2" PFB screws.
Step 6. At Tilt Mechanism, loosen four 10-32 nylon insert nuts and move Tilt Mechanism enough so that Timing Belt
can be removed.
Step 7. To remove Tilt Mechanism, fully remove four 10-32 nylon insert nuts and #10 flat washers.
Step 8. Replace component by doing steps in reverse.
Step 9. Set proper belt tension. Refer to "Setting Pan/Tilt Belt Tension" on page 92.
Timing Belt
8-32 x 1/2" PFB Screw (4)
#10 Flat Washer (4)
Yoke Cover Mounting Bracket
10-32 Nut (4)
Figure 3-56: Removing Tilt Mechanism
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88 BEST BOY 4000 SPOT LUMINAIRE FIELD SERVICE MANUAL