Group 01 General AW1;R39691 R70;070300 1049 080288 R70;070300 1050 080288 CTM-7 (5-89) 2R3; 001 01 110589 Some early designed 1000 and 2000 Series pumps will not have a serial number plate. A model number (A) will be stamped on the hub of the pump housing. This will aid in pump identification, however, design changes for non- serialized pumps are usually tied to the application or vehicle serial number. Non-serialized and serialized 1000 Series pumps have different model numbers, however, the designs are the same. Non-serialized 2000 Series pumps have different designed pressure compensator valves (stroke control valves) and pump shaft rotary assemblies than serialized pumps.
Al- though the designs are somewhat different, the function is the same. Differences between NON-SERIALIZED and SERIALIZED 2000 Series pumps will be called out in this technical manual. All current designed John Deere Radial Piston Hydraulic Pumps have serial number plates. Litho in U.S.A. 01-1 All 1000 Series four piston pumps have a displacement of 11 cm3 (0.7 in. 3) and eight piston versions have a displace- ment of 23 cm3 (1.4 in. 3 ). NON-SERIALIZED HYDRAULIC PUMPS- 1000 AND 2000 SERIES-(PR) PUMP DISPLACEMENT 1000 SERIES (PR) AllTractorManuals.com