PIN-SPRING 2K8078 - Caterpillar

A plate, which is located on the side of the fuel injection pump, shows the part number and the code of the fuel injection pump.
Table 1
Code    Position in degrees Before Top Center for Static Timing    Piston Displacement    
"AJ"     16    
2.54 mm (0.100 inch)    
"BJ"     16    
2.54 mm (0.100 inch)    
"FJ"     16    
2.51 mm (0.099 inch)    
"GJ"     22    
4.71 mm (0.185 inch)    
"HJ"     22    
4.71 mm (0.185 inch)    
"JJ"     22    
4.71 mm (0.185 inch)    
"KJ"     18    
3.17 mm (0.125 inch)    Type ... In-line cassetteDirection of rotation of the camshaft for the fuel injection pump ... Clockwise from the drive end
Illustration 1 g00385512
Fuel injection pump (1) Tighten the four union nuts that connect the high pressure fuel lines to the fuel injection pump to the following torque. ... 27 N m (20 lb ft) (2) Tighten the union nut that connects the fuel return line to the top of the fuel pump to the following torque. ... 20 N m (15 lb ft) (3) Tighten the four delivery valve holders to the following torque. ... 43 N m (32 lb ft) (4) Tighten the four mounting bolts and the two mounting nuts to the following torque. ... 22 N m (16 lb ft) (5) Tighten the bolt that connects the fuel supply line to the fuel pump to the following torque. ... 20 N m (15 lb ft)
Illustration 2 g00607092
(6) ShimThe shim adjusts the timing of the fuel injection pump. A thicker shim retards the timing. A thinner shim advances the timing. The timing changes one degree for each 0.10 mm (0.004 inch) difference in the thickness of the shim. More than one shim can be used. If the fuel injection pump is reinstalled, a new shim, which is the same thickness as the original shim, must be installed.Note: Do not use sealant on a shim. A thin layer of sealant is included with the final thickness of a new shim. Extra sealant will affect the timing of the fuel injection pump. If a shim is not required, a thin layer of 4C-9612 Silicone Sealant should be applied to the mating face of the cylinder block.If any of the following new components are installed, a new shim which has a thickness of 0.5 mm (0.020 inch) must be used in order to correctly adjust the timing of fuel injection.
Camshaft of the fuel injection pump
Cylinder blockThe following thicknesses of shims are available:
0.10 mm (0.004 inch)
0.20 mm (0.008 inch)
0.30 mm (0.012 inch)
0.40 mm (0.016 inch)
0.50 mm (0.020 inch) (7) Pin for the springs of the linkage of the fuel injection pump (8) The notch is in the shim for the pin. (7) The pin is on the in-line cassette. (9) Two dowels for aligning the shim and the fuel injection pumpCamshaft for Fuel Injection Pump
Illustration 3 g00386925
Components of the camshaft for the fuel injection pump (1) Camshaft gear (2) Cover (3)