93
S08
MAINTENANCE
Carry out a check and adjustment of the valve clearances
one more time after the first 500 hours of operation.
After this, adjustment according to the regular interval
takes place, which is every 2,000 operational hours.
On the flywheel is engraved the reference information
UP TDC, DOWN TDC and the angle indications listed in
the table below. Depending on the engine installation,
this information is visible in one of the windows, either
furthest up or furthest down on the flywheel. See
illustration.
Upper and lower window to read the engraving on the flywheel.
Valve clearance, specifications
Intake valve
0.45mm (0.018 in)
Exhaust valve
0.70mm (0.028 in)
Tightening torques
Lock nut for valves
35 Nm (26 lb-ft)
Adjust valves according to the table below. Follow
the respective column depending on whether you are
reading the engraving on the flywheel in the lower or the
upper window. Start adjustment at the top of the table.
Reading in the
lower window
Valve transition
on cylinder
Adjust valves on
cylinder
Reading in the
upper window
DOWN TDC
6
1
UP TDC
120/480
2
5
300/660
240/600
4
3
60/420
DOWN TDC
1
6
UP TDC
120/480
5
2
300/600
240/600
3
4
60/420
Order of cylinders
1. Clean the rocker covers and the area around them.
2. Remove the rocker covers.
3. Use the turning tool appropriate to the installation
of the engine. Tool 99 309 (or equivalent from
other suppliers) is used to rotate the flywheel from
the underside of the engine and tool 2 402 509 (or
equivalent from other suppliers) is used from the top
side.
4. Start adjusting one cylinder according to the table.
Rotate the flywheel until the correct engraving can be
read on the flywheel. It may be necessary to rotate it
more than 1 revolution.
Rotate the flywheel in the rotational direction of the
engine, which is clockwise viewed from the front of
the engine and anticlockwise viewed from the back
of the engine.
During a valve transition, the exhaust valve (the long
arm) is closing at the same time as the intake valve
is opening.
The UP TDC engraving on the flywheel is now visible
in the window furthest up on the flywheel. The DOWN
TDC engraving is visible in the lower window.
5. Read the table on the previous page to see which
valve to adjust.
6. Stick the feeler gauge under the pressure pad of the
rocker arm and check the valve clearance.
7. If necessary, adjust the valve clearance by
a) loosening the lock nut on the end of the rocker
arm
b) adjusting the valve clearance with the adjusting
Summary of Contents for N13.700 CR3 HD
Page 2: ......
Page 4: ......
Page 40: ...40 S05 INSTRUMENTATION SYSTEM LAYOUT INCLUDING OPTIONS...
Page 44: ...44 NOTES...
Page 120: ......