Technical data

SERVICING
Disassembly
For removal of the cylinder head and related parts, refer to "Cylinder Head".
For the removal of the water pump and electrical
equipment, refer to their respective items.
Pull off the push rod, then pull out the tappet upward..
Remove the fuel filter.
Loosen the crankshaft pulley nut, then take out the
pulley and washer.
With flywheel bolts loosened, remove the flywheel.
Remove the rear plate and the rear oil seal case.
Place the engine upside down, then remove the oil
pan and the oil screen.
Remove the injection pump gear bearing housing.
Remove the gear case. Remove the
inspection window cover located at the right
front (beside the injection pump) of the
cylinder block, the stopper spring and tie rod
from the control rack of the pump prior to
removal of the gear case.
CAUTION: PRIOR TO REMOVING THE GEAR CASE, BE SURE TO SEPARATE THE
INJECTION PUMP RACK AND TIE ROD. THE FRONT PLATE IS BOLTED TO THE
CYLINDER BLOCK FROM INSIDE THE GEAR CASE; THEREFORE BE CAREFUL NOT TO
DRIVE OUT THE GEAR CASE
TOGETHER WITH THE FRONT
PLATE.
Remove the fuel injection pump.
Remove governor weight bolts,
then remove the weight.
Remove the pump camshaft bolt.
Remove the oil filter and the oil
pump assembly, and then
draw out the pump
camshaft.
Remove the gears, and then
remove the front plate.
Only for the W33 engines,
use the following
procedure to remove the front plate: pull out the crankshaft front bearing with a puller
and, then, remove the front plate. To remove the front plate without drawing the front
bearing out, remove five bearing caps to let the crankshaft float, draw the idle gear out
and remove the other gears.
Draw out the camshaft. Prior to removing the camshaft, remove the pushrod, tappet and
tachometer drive unit.