Perkins — How to Adjust the Turntable Rotation Gear Backlash
Adjustments · Turntable rotation drive hub
From a Perkins service manual covering: 404F-22, 5046D, 5606A, 804D-33, S8015-12264, S8016H-13642, S80X15-12264, S80X16H-13642, S8515-12264, S8516H-13642. Check it applies to your exact model before use.
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Procedure
- Secure the turntable from rotating with the turntable rotation lock pin.
- Loosen the backlash pivot plate mounting fasteners.
- Push the backlash pivot plate towards the turntable as far as possible.
- Loosen the lock nut on the adjustment bolt.
- Turn the adjustment bolt clockwise until it contacts the backlash pivot plate.
- Turn the adjustment bolt one half turn counterclockwise and tighten the lock nut.
- Rotate the backlash pivot plate away from the turntable until it contacts the adjustment bolt; torque the mounting fasteners.
- Rotate the turntable through an entire rotation and check for tight spots; readjust if necessary.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Backlash plate mounting bolts 280 ft-lbs / 379 Nm lubricated
Source: Perkins service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.