Caterpillar Forklifts DP40N1-DP55N1, GP40N1-GP55N1 MC/FC description of the catalogue:

Caterpiller Forklifts Service Manuals and Wiring Diagrams

Chassis & Mast
DP40N1 AT40-10011-up
DP45N1 AT29D-60001-up
DP50CN1 AT29D-90001-up
DP50N1 AT33C-60001-up
DP55N1 AT33C-90001-up

GP40N AT12B-10011-up
GP45N AT19D-60001-up
GP50CN AT19D-90001-up
GP50N AT28C-60001-up
GP55N AT28C-90001-up