Mounting Timing Gears; Crankshaft - Connecting Rod Mechanism And Its Maintenance - Weifang 495 Operation And Maintenance Manual

(6)Mounting Timing Gears
During mounting the timing. gears, it
IS
important that the
marks on each pair of the meshing
~ears
should
~e
aligned with
one another to ensure the correct valve timing and injection tim-
Ing.
•
5
----
.
~--.
...... ......
_. -
~.:-'-
- - - + -
I
Fig. 9 Layout of the gear train
I-Injection
PUf11p
gear (Z=40) ;2-Idling gear (Z=41) ;3-·-Camshaft timing
gear <Z=40);4-Crankshaft timing gear (Z=20);5-Lubricatir:Lg oil pump interme-
diate gear (Z= 25); 6--Lubricating oil pump gear (2= 17)
3~
Crankshaft -Connecting Rod Mechanism and Its
Main~enance
1
)Construction and Features
The crankshaft a11d connecting rod mechanism consists' of the
piston connecting rod assembly (Fig- 10) and the crankshaft
fly-
wheel assembly (Fig. 11)
31