Possible Failures And Instructions For Troubleshooting; Possible Failures Of The Engine And Instructions For Troubleshooting - Belarus 80.1 Operation Manual

7. POSSIBLE FAILURES AND INSTRUCTIONS FOR TROUBLE-
SHOOTING

7.1 Possible failures of the engine and instructions for troubleshooting

A list of possible engine failures of BELARUS-80.1/82.1/820 tractors and instruc-
tions for their troubleshooting are given in table 7.1.1.
Table 7.1.1
Failure,
external manifestation, cause
Air in fuel system
Fuel pump failure
Fuel filters are clogged
Fuel pump control lever does not
reach the stop
Filter cartridge of the fine fuel filter is
clogged
Nozzles are out of order
Fuel injection advance angle is in-
correctly adjusted
Engine air cleaner is clogged
Fuel pump is out of order
The engine fumes at all operation modes: black smoke comes out of the
exhaust pipe
Engine air cleaner is clogged
Nozzle atomizer needle is stuck
Fuel pump is out of order
The engine fumes at all operation modes: white smoke comes out of the
exhaust pipe
The engine operates with over-
cooling
Water ingress into fuel
No gap between gaps and rocker
arms
Fuel injection advance angle is in-
correctly adjusted
The engine will not start
Bleed the system with a manual fuel priming pump. Elim-
inate air suction in the fuel system
Remove the fuel pump off the engine and send it to
a workshop for repair
Rinse the coarse fuel filter and replace the filter
cartridge of the fine fuel filter
The engine does not increase power
Adjust the control rods of fuel pump
Replace the filter cartridge of the fine fuel filter
Detect the failed nozzles, rinse and adjust them
Set the recommended fuel injection advance angle
Perform maintenance of the air cleaner
Remove fuel pump off the engine and send it to a
workshop for repair
Perform maintenance of the air cleaner
Detect the failed nozzle, rinse or replace the atom-
izer, adjust the nozzle
Remove the fuel pump off the engine and send it to
a workshop for repair
Warm up the engine, during operation maintain the
coolant temperature in the range 85-95°С
Replace the fuel
Adjust gaps between valves and rocker arms
Set the recommended fuel injection advance angle
349
80-0000010B OM
Troubleshooting