Removing Pump; Fitting Injection Pump And Adjusting Injection Timing - Sisu Diesel 320 Workshop Manual

A. Removing pump
1. Clean the pump and the surrounding parts carefully.
Remove the delivery pipes, the throttle cable wire from the
revolution lever and the stop solenoid wire from the pump.
Fit protective caps on the delivery pipe unions.
2. Remove the cover of the front covering so that the pump
gear wheel becomes accessible.
3. Unscrew the gear wheel attaching nut. Detach the gear
wheel by using puller 9052 48900.
Note! If the timing gear casing has not been removed, the
injection pump gear wheel remains in contact with the idler
gear and it is unnecessary to mark the positions of the
gears.
4. Detach the injection pump from the timing gear casing.
Clean the sealing surfaces.
Note! In E ---engines have one retaining screw so---called in-
terrupted screw. Unscrew it with a drift.
B. Fitting injection
adjusting injection timing
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1. Turn the crankshaft to a position where the 1st cylinder
piston reaches its compression stroke top dead centre.
Then turn the crankshaft backwards until the mark on the
pulley passes the timing indicator. After that rotate the
crankshaft slowly to running direction until the mark on the
pulley is at the point of the timing indicator.
Note! Distance between the piston top face and the top
dead center with different crankshaft angles, see page
5 ---3.
Fuel System
pump and
2. Remove the small cover plate on the side of the injection
pump. Rotate the pump shaft until the timing marks align
(see arrow in picture above).
3. Place a new sealing ring on the pump flange. Push the
pump into place on the timing gear housing. Note! key
groove in gear left out from beginning of 1996.
4. Tighten the pump into position, where the timing marks
align.
5. Tighten the gear wheel nut to a torque of 90 Nm. Fit the
small cover onto the side of the pump. Fasten the pump
gear wheel covering (+oil filler tube).
6. Remove the protective caps from the delivery pipe uni-
ons and fit the delivery pipes. Fit the overflow pipe, throttle
cable wire and the stop solenoid wire. Bleed the fuel sys-
tem (see instruction C).
Note! Lubrication oil is not needed because fuel in the
pump lubricates the internal parts.
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