CHART-CONTROL PANEL 3N8900 - Caterpillar

For removal of the governor from the fuel injection pump housing, see Disassemble Governor. 1. Remove cover (1). 2. Install tooling (B). Engage the timing pin in the center groove of the fuel rack. Move the fuel rack in the direction of the arrow to find the center groove.3. Install tooling (D), and remove bushing (2). 4. Install tooling (E), and remove the fuel injection pump. 5. Remove spacer (3). Do not mix components from fuel injection pump assemblies.6. Remove the remainder of the fuel injection pumps and spacers with Steps 2-5 done again for each injection pump. 7. Remove cover (4). 8. Remove fuel rack (5). 9. Use a bar magnet to remove lifter assembly (6). Put identification marks on the lifter assemblies as to their location in the fuel injection pump housing. 10. Use tooling (A) to remove snap ring (7). Do not let the camshaft fall because the machined surfaces will be scratched.11. Use a plastic hammer to make camshaft (8) move out of washer (9). 12. Remove camshaft (8). 13. Use tool (C) to remove rack rear bearing (10). Remove camshaft rear bearing (11). 14. Install the location plate from tooling (B). Align the bore in the plate with the O-ring seal counterbore in the fuel injection pump housing. Make a mark for alignment.15. Remove tooling (B). 16. Use tooling (C) to remove rack bearing (12) and camshaft bearing (13).Assemble Fuel Injection Pump Housing
Be sure all oil passages are clear, and put clean engine oil on all parts before assembly. 1. Use tooling (A) to install the camshaft bearing in the drive end of the fuel injection pump housing. With the joint of the bearing toward the top of the fuel injection pump housing, install the bearing so it is 0.25 0.20 mm (.010 .008 in.) below the surface of the housing. 2. Use tooling (A) to install the camshaft bearing in the drive end of the fuel injection pump housing. The joint of the bearing must be installed toward the top of the pump housing. Install the bearing to a depth of 1.00 0.25 mm (.039 .010 in.).3. Use tooling (A) to install the fuel rack rear (governor end) bearing. Install the bearing so it is 7.16 0.13 mm (.282 .005 in.) below the surface of the housing. 4. Install the plate assembly from tooling (B) on the drive end of the fuel injection pump housing to install the bearing for the fuel rack. Use clean grease to hold the new fuel rack bearing on the driver from tooling (B). Install the driver and bearing in the plate assembly with the groove in the driver in alignment with the pin in the plate assembly. Use a hammer to push the bearing into position. The bearing will be installed to the correct depth when the shoulder of the driver is against the plate assembly.5. Remove tooling (B) from the fuel injection pump housing. The rack bearing must