Section G. Maintenance Belarus– 510/512 Operating manual
106
Special maintenance
After each 2,000 service hours.
Operation 44. Checking engine injec-
tors
IMPORTANT!
The injectors must be
cleaned and adjusted in a dealer’s spe-
cialized workshop.
WARNING:
Diesel fuel is injected under
high pressure and can result in serious
injuries, if the injector atomization is
checked by hand. Use a piece of paper
or cardboard for this purpose. Wear
protective goggles. Prior to connection
or disconnection of fuel lines, stop the
engine to take pressure down. Prior to
starting the engine, tighten all connec-
tions of fuel lines. In case of fuel injec-
tion on the hand skin, immediately ap-
ply for medical aid, otherwise blood
poisoning is possible.
NOTE:
It is convenient to have a spare
set of injectors verified and adjusted
for quick installation into the engine.
Take the injectors out and replace them
proceeding as follows.
• Prior to disconnection or loosening
of any fuel system parts, thoroughly
clean the adjacent working surfaces.
• Unscrew the nuts (4) and disconnect
the high-pressure fuel piping (5) from
the injectors (3) and fuel pump.
• Remove the fuel piping.
• Unscrew the four bolts (1) of the
drain line and take the rundown fuel
piping (2) away. Discard copper
sealing washers (two washers per
each banjo bolt).
• Unscrew the bolts (6) fastening the in-
jectors and remove the injectors (3).
• Send the injectors for servicing to
dealers workshop.
• Install the verified, cleaned and ad-
justed injectors by performing the
above specified step in the reverse
order.
• Remove air from the system.
IMPORTANT!
During each injector in-
stallation, use new copper washers.
