HP LaserJet 1320 
Duplex Drive Gear Assembly Diagram

Reverse Rotation Gear Assembly - RM1-1304 Normal Rotation Gear Assembly - RM1-1303
REF PART # DESCRIPTION
1 RM1-1303 Normal rotation gear assembly - Includes the internal/external geared body, two planetary gears, outer gear with shaft, and the black ratchet gear - Mounts in the duplexing gear assembly
2 RM1-1304 Reverse rotation gear assembly - Includes the internal/external geared body, two planetary gears, outer gear with shaft, and the white ratchet gear - Mounts in the duplexing gear assembly
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