Caterpillar Forklifts GP15NM-GP35NM mc description of the catalogue:

Caterpiller Forklifts Service Manuals and Wiring Diagrams

Chassis & Mast
GP15NM AT34-R0100 to R9999
GP18NM AT34-V0100 to V9999
GP20CNM AT34-N0100 to N9999
GP20NM AT17D-N0100 to N9999
GP25NM AT17D-R0100 to R9999
GP25NM-HP AT35-R0100 to R9999
GP30NM AT13F-N0100 to N9999
GP35NM AT13F-R0100 to R9999