PRG Best Boy 4000 Service Manual page 99

Step 6. Remove Yoke Cover Mounting Bracket by removing four 8-32 x 1/2" PFB screws.
Step 7. Loose Pan Mechanism Tension Bolts and remove Timing Belt.
Step 8. Remove four 10-32 x 5/8" socket head screws and #10 flat washers that secure Pan Mechanism to
crossmember.
Step 9. Remove Pan Mechanism.
Step 10. Replace Pan Mechanism by doing steps in reverse.
Step 11. Set proper belt tension. Refer to "Setting Pan/Tilt Belt Tension" on page 92.
Timing Belt
Pan Mechanism
Tension Bolt (2)
Cable Tie
10-32 x 5/8" Screw (4)
Pan Mechanism
#10 Flat Washer (4)
Yoke Cover Mounting Bracket
8-32 x 1/2" PFB Screw (4)
Figure 3-59: Removing Pan Drive Mechanism
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BEST BOY 4000 SPOT LUMINAIRE FIELD SERVICE MANUAL 91