Caterpillar Forklifts GP15K-GP35K, DP15K-DP35K AC description of the catalogue:

Caterpiller Forklifts Service Manuals and Wiring Diagrams

GP15K, GP18K, GP20K, GP25K, GP30K, GP35K
DP15K, DP18K, DP20K, DP25K, DP30K, DP35K

GP15K ET31A-60001-up DP15K ET16B-65001-up
GP18K ET31A-85001-up DP18K ET16B-85001-up
GP20K ET17B-15001-up DP20K ET18B-15001-up
GP25K ET17B-65001-up DP25K ET18B-65001-up
GP30K ET13D-45001-up DP30K ET14C-45001-up
GP35K ET13D-65001-up DP35K ET14C-65001-up