Shibaura N843, Workshop Manual

Page: 39 / 75

109823 2/09 4-3
Piston and connecting rod assembly
1. Coat the metal surface, piston and piston ring with
engine oil.
2. Turn the ring to distribute the oil in the ring groove,
and set the ring end gaps at 90° respectively
avoiding piston pin direction and the direction at a
right angle to the piston pin.
3. Insert the ring facing the connecting rod figure match
mark toward the injection pump side, using ring
pliers.
Note: Place the smallest connecting rod figure
match mark to the front cylinder position
so that the figures increase toward the rear
of the engine.
4. Tighten the connecting rod cap with the specified
torque and check for the axial play.
Notes: 1. After tightening, verify that the crankshaft
moves easily.
2. The connecting rod should move 0.004-.012
in (0.1–0.3 mm) in the axial direction.
Suction pipe · Suction filter
1. Install an O-Ring on the suction pipe and insert the
suction pipe into the cylinder block.
2. Place the suction pipe end into the suction filter and
fasten the suction filter.
Connecting rod torque
20.3-23.8 lb
f
•ft (29–34 N·m) {3.0–3.5 kgf·m}
Suction filter torque
79.7-115.1 lb
f
•in (9–13 N·m) {0.9–1.3 kgf·m}
Fig. 4-6
Fig. 4-7
Oil
Oil
Injection pump side
Fig. 4-8
Suction pump
Suction filter