Repair manual

SECTION 3 - INDUSTRIAL APPLICATION 25
F3C CURSOR ENGINES
Print P2D32C005 E Base - May 2007
Clockwise
start-up
and rotation
Adjusting
cylinder
valve no.
Adjusting
clearance
of cylinder
valve no.
Adjus ting
pre-load ing
of cylinder
injector no.
1and6atTDC 6 1 5
120º 3 4 1
120º 5 2 4
120º 1 6 2
120º 4 3 6
120º 2 5 3
- Lock the adjusting screw to a torque of 5 Nm (0.5 kgm)
by means of a torque wrench.
- Back off the adjusting screw 1/2 to 3/4 turn.
- Tighten the lock nut.
FIRING ORDER
1-4-2-6-3-5
Adjustment of clearances between rockers and valve studs
and preloading of pump injector rockers should be carried out
with extreme care.
Bring the cylinder under examination to the firing stage, the
valves of this cylinder remain closed while the valves of the
other cylinder in the pair can be adjusted.
The cylinder pairs are 1-6,2-5,3-4.
Strictly adhere to directions and data given on the table below.
Adjusting clearances between rockers
and
intake/exhaust/valve
studs:
- Use a box wrench to loosen the adjusting screw locking
nut (1).
- Insert the feeler gauge blade (3).
- Use a suitable wrench to screw the adjusting screw in or
out as required.
- Ensure the feeler gauge blade (3) can slide between the
parts concerned with a slight friction.
- Hold the screw still while tightening the nut (1).
Setting pump-injector rocker
preloading:
- Use a box wrench to loosen the nut fastening the
adjusting screw for rocker arm (5) controlling
pump-injector (6).
- With a suitable wrench (4) tighten the adjusting screw
until the pumping element reaches its-end-of-stroke
point.
ADJUSTING INTAKE/EXHAUST ROCKERS AND INJECTION
In order to properly carry out the above-mentioned
adjust ments , follow the sequence specified in the table,
checking the exact position in each rotation phase by
means of pin 99360612, to be inserted in the 11
th
hole
in each of the three sectors with 18 holes each.
Figure 83
119499
Inta
k
e and exhaust roc
k
er
p
lay ad
j
ustment and
p
re-loadin
g
o
f
roc
k
ers controllin
g
p
um
p
in
j
ectors