ENGINE
M6040, M7040, WSM
1-S42
(5) Injection Pump Unit
Injection Pump Unit
(Removing the fuel injection pump unit)
1. Detach the window cover (1) for the fuel injection pump unit
from the flywheel housing.
2. Place the piston of the 4th cylinder at the top dead center in the
compression stroke. Fix the flywheel with the flywheel stopper.
• Look for the align mark on the idle gear and the injection
pump gear. Using a white marking pen or the like, put an
align mark on the engaged tooth of the both gears. This
helps to reassemble these gears in mesh later.
• When the already existing align marks align with each
other, there is no need to put another align mark.
3. Unscrew the two plugs (3) of the injection pump unit.
4. Tighten the upper fuel camshaft lock screw (7) until it comes into
contact with the fuel camshaft. Make sure the camshaft does
not move any longer.
5. Tighten the lower fuel camshaft lock screw (7) until it comes into
contact with the fuel camshaft.
• Never overtighten the lock screws when they have come
into contact with the camshaft. Otherwise the injection
pump itself may get damaged.
• Use of a socket set screw (dog point type) in recommended
for best results. Such screw can be constructed as shown
in figure (a).
6. Disconnect the lubricating oil pipe (4).
7. Loosen the three injection pump unit mounting nuts (2).
8. Remove the injection pump unit support (5) and take out the
injection pump unit.
9Y1210143ENS0063US0
A M8 × Pitch 1.25
B 5 mm dia. (0.197 in. dia.)
C 4 mm (0.157 in.)
D 45 mm (1.772 in.)
E 10 mm (0.39 in.): Conspicuously Painted
(1) Window Cover
(2) Injection Pump Unit Mounting Nut
(3) Plug
(4) Lubricating Oil Pipe
(5) Injection Pump Unit Support
(6) Window for Injection Pump Gear
(7) Fuel Camshaft Lock Screw
(Socket Set Screw Dog Point Type)
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