Nanni N4.40, Workshop Manual

Page: 132 / 175

ENGINE
03-M-E3B, 03-M-DI-E3B, 03-M-E3BG, WSM
1-S62
Idle Gear (for Balancer Model)
1. Remove the external snap ring.
2. Remove the idle gear collar.
3. Remove the idle gear (2).
(When reassembling)
• Align each gear with its mark.
– Cam gear (3) and balancer gear (4)
– Idle gear (2) and crank gear (6)
– Cam gear (3) and idle gear (2)
– Idle gear (2) and injection pump gear (1)
– Idle gear (2) and balancer gear (7)
M00000003ENS0088US1
Camshaft
1. Remove the camshaft set screws (1) and pull out the camshaft
(2).
(When reassembling)
• When you install the idle gear, align the marks on the gears.
M00000003ENS0089US1
Camshaft and Balancer Shaft (for Balancer Model)
1. Remove the camshaft set screws and pull out the camshaft (1).
2. Remove the set bolts of the balancer shaft 1 and pull out the
balancer shaft 1 (2).
3. Remove the set bolts of the balancer shaft 2 and pull out the
balancer shaft 2 (3).
(When reassembling)
• When you install the balancer shafts (2) and (3), put the first and
fourth cylinders piston at the top dead center in compression.
Then align all the marks on each gear to assemble the timing
gears. Set the idle gear last.
M00000003ENS0090US1
(1) Injection Pump Gear
(2) Idle Gear
(3) Cam Gear
(4) Balancer Gear (5) Oil Pump Drive Gear
(6) Crank Gear
(7) Balancer Gear
Tightening torque Camshaft set screw
24 to 27 N·m
2.4 to 2.8 kgf·m
18 to 20 lbf·ft
(1) Camshaft Set Screw (2) Camshaft
Tightening torque
Camshaft set screw
24 to 27 N·m
2.4 to 2.8 kgf·m
18 to 20 lbf·ft
Set bolt of the balancer
shaft 1
24 to 27 N·m
2.4 to 2.8 kgf·m
18 to 20 lbf·ft
Set bolt of the balancer
shaft 2
24 to 27 N·m
2.4 to 2.8 kgf·m
18 to 20 lbf·ft
(1) Camshaft
(2) Balancer Shaft 1 (3) Balancer Shaft 2
KiSC issued 06, 2009 A