Toro Workman 3000 Series Service Manual page 204

Injection Pump Inspection
Inspect the injection pump parts for proper operation,
wear, corrosion, seizure, etc. (Fig. 47). Replace worn or
damaged parts.
Injection Pump Assembly
1. Insert the plunger barrel into the housing.
2. Install the delivery valve seat, gasket, delivery valve
and valve spring. Install the o-ring on the delivery valve
holder. Temporarily tighten the delivery valve holder.
3. Insert the control rack. Insert the sleeve. Align the
match mark on the rack with that on the pinion (sleeve).
4. Insert the upper seat. Insert the plunger spring.
5. Fit the lower seat to the plunger. Insert the plunger
into the barrel (Fig. 48).
6. Push in the tappet roller assembly and install the
stopper pin.
7. Tighten the delivery valve holder to a torque of 3.5 -
3.9 Kgm (25 - 28 ft-lb). Install the holder stopper.
9. Before installing the injection pump, make sure the
control rack slides smoothly, with little resistance. If the
control rack binds, it is assembled incorrectly or parts
are dirty. The pump must then be reassembled correctly
and/or cleaned.
10. Install the injection pump to the cylinder block. Make
sure that the same number and size shims that were
under the pump when it was removed are installed.
11. Install the fuel line and delivery pipes.
12. Bleed air from the fuel system. (See Bleeding the
Fuel System and Bleeding Air From the Injectors in this
section of the book.)
Liquid Cooled Diesel Engine Page 4 - 54
Figure 47
Figure 48
Workman 3300-D/4300-D