Belarus 1523, Operating Manual

Page: 285 / 312

BELARUS- 1523/1523В /1523.3 /1523В.3 Scheduled Maintenance
274
AFTER EVERY 2000 HOURS OF OP-
ERATION perform the previous main-
tenance procedures plus the followings:
Procedure 56. Checking the Fuel In-
jection Equipment
To check the injectors for injection pres-
sure, dismantle them from the engine by
carrying out the following operations:
• screw out the coupling nuts (6) of the
unions of the fuel pump and the injec-
tors;
• remove the high-pressure pipes (4);
• remove the bolts (1) of the unions
from each injector together with their
sealing washers and remove the
draining pipeline (3);
• screw out bolts (2) which fix the injec-
tors and remove the injectors (5);
• send the injectors to a specialized
workshop or your dealer for checking.
NOTE: The injection pressure should
be within 22...23 MPa.* The atomiza-
tion should be in the form of a mist,
without continuous jets and/or drips.
Timing angles for engines Д -260.1 and
Д - 260.1S fitted with fuel pumps “YAZDA”
or “Motorpal”, should correspond to
those given in Table on the right:
To check and adjust the injectors, dis-
mantle them from the engine and send
them to a specialized workshop.
Timing angles for fuel injection
(degrees to TDC)
Engine
Д -260.1 260.1S2
Fuel pump
363-40.01 Motorpal 363-40.01 Motorpal
19...21 21...23 14...16** 15...17