Section EG 60-4 SECTION ENGINE G 0 VERNING S YS TEMS IE_T AGB 270 AGB 280 EG 60-5A E R N A T l O Supersedes N A November L 1990 Issue ACTUATORS FOR BOSCH "P" MODEL PUMPS (including 3000, 7100, 8500 Series) lssved May 1995
Section EG 60-4 SECTION ENGINE GOVERNING EG 60-5A SYSTEMS INTERNATIONAL AGB 270/280 INTRODUCTION The AGB 270/280 actuators are linear electromagnetic throttle positioning devices which mount integral to Robert Bosch (RB) 3000, 7100, and 8500 series "P" model fuel injection pumps. They may also be utilized on other types of in-line fuel injection pumps with the use of an interface plate.
Section EG 60-4 SECTION ENGINE GOVERNING EG 60-5A SYSTEMS [INTERNATIONAL AGB 270/280 130mm 5.125" 143mm f 5.625" 203mm gg EG-195 102mm 4.0625" Figure 1. AGB 270/280 actuator dimensions DESCRIPTION The AGB 270/280 actuator controls the position of the fuel injection pump rack based on an input from the speed control unit. An AC frequency signal (proportional to speed) generated by the magnetic speed sensor is constantly fed into the speed control unit.
Section EG 60-4 SECTION ENGINE GOVERNING EG 60-5A SYSTEMS [ INTERNATIONAL AGB 270/280 INSTALLATION AND ADJUSTMENTS The leads from the speed control unit to the actuator should be at least #18 for 24 volt and 32 volt and #16 wire for 12 volt operation. Large gauge wire is necessary for long wire lengths to compensate for current losses. 24 VOLT OPERATION Connect the following actuator terminals together with jumpers at the mating half of the connector (See Figure 3). 1. B to C 2.
Section EG 60-4 SECTION EG 60-5A F-_N T E R N A T I O N A AGB 2,70/280 1 _ Figure 3. Wiring to AGB 270/280 actuator for 24 volt operation (Actuator coils connected in series) 1.5 OHM 25 WATT A 32 VOLT POWER SUPPLY Figure 4.
Section EG 60-4 SECTION -- ENGINE GOVERNING SYSTEMS IN AGB EG 60-5A TERN A IONA L 270/280 AGB 270 and AGB 280 ACTUATOR ASSEMBLIES Note: (I) If fuel pump has a mechanical governor attached, consult Robert Bosch agent for removal instructions. 12. Assemble the actuator housing assembly (1), 'o' ring (104) and sealing gasket (114) to the fuel pump using (II) In order to be compatible with the R. Bosch fuel pump this actuator is built with metric hardware.
Section EG 60-4 SECTION ENGINE GOVERNING EG 60-5A SYSTEMS [INTERNATIONAL AGB 270/280 22. A low fuel stop screw (117) is also available to limit the fuel rack cut-off position if required. After adjustmerit, lock the screw with nut (118). Torque to 2 Nm (2.7 lbs. ft.). 23. The linkage may be further optimized after the complete governor system is installed and wired by temporarily inserting an ammeter is one of the wires between the speed control unit and the actuator.
Section EG 60-4 SECTION _- ENGINE GO VERNING SYSTEMS r_-__ R N A T I O N A L AGB 270/280 Figure 5.
Section EG 60-4 SECTION EG 60-5A ENGINE GOVERNING SYSTEMS [_N TERNATIONAL AGB 270/280 118 NUT, HEX 1 NT403241 30 SCREW, HEX HD. 2 SC403031 117 116 SCREW, SOC. HD. SCREW, BUTTON HD. 1 1 SC403242 SC410598 29 NUT, LOCKING 1 NT410607 28 BEARING 2 BG410587 WASHER, 2 1 WA403175 GA410454 PLUG, PIPE NUT, HEX 1 1 PG400718 NT406736 115 FLAT 114 GASKET 113 LOCKWASHER 2 WA407649 27 26 112 SCREW, 2 SC403165 25 SCREW, BUTTON HD.
Section EG 60-4 SECTION EG 60-5A ENGINE GOVERNING SYSTEMS _'-'_'T'-_'R-N A T I O N A L AGB 270/280 "-- 213 SCREW-DRIVE 2 SC150-3BL 213 SCREW--DRIVE 2 SC150-3BL 212 NAMEPLATE 1 NP410442 212 NAMEPLATE 1 NP410441 211 SCREW-HEX 2 SC403162 211J SCREW -- HEX HD.
Section EG 60-4 SECTION ENGINE GOVERNING EG 60-5A SYSTEMS I.N T E R N A T I O N A L AGB 270/280 NOTE: MEASURE FROM TOP OF FOUR CONTACTING FEET - PUMP FACE --1 ,,AIBEARING @ --_ Figure B _DIMENSION \ 6. Protrusion measurement of Pump Cam Bearing \ EARING COVER Figure Pagc ]0 7.
