Toro Workman 3000 Series Service Manual page 206

Nozzle Inspection and Cleaning
1. Clean the inside and outside of the retaining nut in
clean diesel fuel or kerosene to remove carbon or fuel
deposits. Inspect the lower seating surface for rust or
damage. The sealing area may be restored with emery
cloth.
2. Remove carbon or lacquer deposits from the nozzle
by cleaning in clean diesel fuel or kerosene. Stubborn
deposits can be removed with a brass wire brush.
IMPORTANT: Do not use a steel brush, steel wool,
etc. Take special care not to scratch the needle valve
in the nozzle assembly.
3. Clean the body, shim, spring, pin and distance piece
in clean diesel fuel or kerosene.
4. Inspect the removed parts (Fig. 50). Replace any
worn or damaged parts.
Nozzle Assembly and Testing
1. Install the nozzle assembly, distance piece and pin
into the retaining nut.
2. Install the shim and pressure spring the body. Assem­
ble the body to the retaining nut. Put the nozzle holder
in a vise. Tighten the body and nut to a torque of 3.5 -
4.0 KgM (25 - 29 ft-lb) (Fig. 51).
3. Test the nozzle for proper operation. (See Nozzle
Tests in the Testing section of this chapter.)
Nozzle Installation
1. Clean the nozzle holder fitting surface on the cylinder
head. Install a new nozzle holder gasket onto the noz ­
zle.
2. Install the nozzle holder into the cylinder head and
tighten to a torque of 5.0 - 6.0 KgM (36 - 43 ft-lb).
3. Install the fuel return pipe. Tighten the retaining nut
to a torque of 2.5 - 3.0 KgM (18 - 22 ft-lb) (Fig. 49).
4. Install the fuel injection pipes. Tighten the nut to a
torque of 2.5 - 3.5 KgM (18 - 25 ft-lb).
5. 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 - 56
Figure 50
Figure 51
Workman 3300-D/4300-D