Injection Pump Service - Toro Workman 3000 Series Service Manual

5. Carefully remove the spring retainer from the end of
the plunger tube (Fig. 43). Remove the washer, o-ring,
valve, plunger spring and plunger.
IMPORTANT: Be careful not to bend or deform the
plunger tube while disassembling the fuel pump. If
the plunger tube is bent, the fuel pump plunger will
bind and the pump will need to be replaced.
6. Install the plunger (valve side out), plunger spring,
valve, o-ring, washer and spring retainer. Make sure the
plunger operates freely.
7. Install the filter and cover gaskets, magnet, filter and
cover. Tighten the cover to prevent air leaks.
8. Install the fuel pump to the frame. Connect the fuel
lines and electrical wires.
9. Bleed the fuel system. (See Bleeding the Fuel System
in this section of the book.)

Injection Pump Service

Do not attempt the disassemble the injection pump
unless it is necessary. If the pump is damaged or
defective, it is recommended to replace the pump.
IMPORTANT: Clean the injection pump and the area
near the injection pump before removing or servic­
ing it. DO NOT spray water onto a hot injection
pump.
Removing and Installing the Injection Pump
1. Remove the engine stop solenoid (see Replacing
and/or Adjusting Engine Stop Solenoid in the External
Engine Component Repair section of this chapter).
2. Disconnect the fuel pipes from the injector nozzles
and injection pump delivery valve holders. Loosen the
hose clamp and disconnect the fuel hose.
3. Remove the tie rod cover. Remove the tie rod clip and
disconnect the tie rod from the injection pump control
rack (Fig. 45).
4. Remove the four (4) injection pump mounting bolts.
Remove the injection pump from the cylinder block.
Make a note of the number and thickness of the adjust­
ing shims under the pump. (The shims determine the
injection timing.)
5. Reverse steps 1 - 4 to install the injection pump. Make
sure the Engine Stop Solenoid is adjusted correctly.
(See Replacing and/or Adjusting Engine Stop Solenoid
in the External Engine Component Repair sectoin of this
chapter.)
Liquid Cooled Diesel Engine
1. Spring retainer
2. Washer
3. O-ring
4. Valve
Page 4 - 52
Figure 43
5. Plunger spring
6. Plunger
7. Plunger tube
8. Body
1
Figure 45
1. Tie rod (disconnected)
Workman 3300-D/4300-D