Belarus 3522.5 User Manual

3522.5-0000010 OM
309
7. Failures that may possibly emerge in the electrical facilities, hy-
draulic lift linkage and guidelines for troubleshooting
7.1 Possible failures in the electronic system for gearbox, rear axle differential
lock, front driving axle drive, front and rear power take off shaft control, and
guidelines for troubleshooting
List of possible failures in the electronic system for gearbox, rear axle differential
lock, front driving axle drive, front and rear power take off shaft control, and guidelines for
troubleshooting are shown in Table 7.1.
Table 7.1
Failure,
external manifestations, cause
Troubleshooting
One of the drives (RA DL, FDA, FPTO, RPTO) or a gear can not be engaged, or be-
comes disengaged after engagement
Short circuit in control valve solenoid
of a drive or a gear that is displayed
by single flash of the corresponding
power-on indicator (actuated by the
pressure sensor at the control valve
output)
- check the electric circuit for normal operation from
CECS to the respective control valve solenoid accord-
ing to the diagram (Annex C). In case a failure is de-
tected eliminate it.
- test the coil resistance of the respective control valve
solenoid, it shall be within the range from 4 to 6
Ohm. If the coil resistance is close to 0 Ohm, replace
the solenoid
Open circuit in the control valve sole-
noid of a drive or a gear – that is dis-
played by two-times flash of the cor-
responding power-on indicator (actu-
ated by the pressure sensor at the
control valve output)
- check the electric circuit for normal operation from
CECS to the respective control valve solenoid accord-
ing to the diagram (Annex C). In case a failure is de-
tected eliminate it.
- test the coil resistance of the respective control valve
solenoid
, it shall be within the range from 4 to 6
Ohm. If the coil resistance is close to infinite distance,
replace the solenoid
One of the drives (RA DL, FDA, FPTO, RPTO) or a gear can be engaged only for a
very short period (from 1 to 6 sec), or becomes disengaged after engagement
If the pressure in the transmission hydraulic system is
below the standard (pressure in the transmission hy-
draulic system shall make from 1.3 to 1.5 MPa), elimi-
nate the failure
Pressure sensor, installed at a control
valve output of a drive or a gear, does
not respond. The failure is displayed
by three-times flash of the corre-
sponding power-on indicator
If the transmission hydraulic system is under a standard
pressure, remove the cable socket with the sensor
pressure and insert the bonding strip to simulate the
sensor response:
- if the error code indicator (three-times flash) is still
blinking, it is necessary to check the circuit to the pres-
sure sensor according to the diagram;
- if the error code indicator went out, the pressure sen-
sor shall be replaced by a new properly operating one
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Belarus 3522.5 Specifications

General

Brand	Belarus
Model	3522.5
Category	Tractor
Language	English

Summary

1 TRACTOR DESCRIPTION AND OPERATION

1.2 Technical Specifications

Lists key parameters and technical data of the tractor.

1.3 Tractor Composition

2 CONTROLS AND INSTRUMENTS

2.1 Layout of Controls and Instruments

Presents the arrangement of controls and instruments located within the tractor cab.

2.2 Switches of Instrument Board

2.5 Instrument Board

2.6 Pilot Lamps Unit

2.7 Integrated Indicator and Control Panel

Provides information on operational parameters and system failures via gauges and lamps.

2.8 Information Display

2.9 Integrated Electronic Panel (IEP)

2.10 Steering

Covers general information on hydrostatic steering control and reverse valve switch.

2.11 Parking Brake Control

2.13 Switching of Ranges and Gears of Gearbox, Creeper Control, CECS

Details the process of switching gearbox ranges, creeper control, and CECS.

2.13.5 Complex Electronic Control System

Outlines the functions and components of the CECS.

2.14 Rear Lift Linkage Control

2.15 Front Lift Linkage Control

2.16 Electronic System of Hydraulic Distributor EHS Sections Control

Covers the EHS electronic system, joysticks, OPU, and flow restriction.

2.18 Switching Unit

2.19 Protection and Switching Unit (PASU)

3 DESCRIPTION AND OPERATION OF TRACTOR CONSTITUENTS

3.1 Engine and its Systems

3.2 Engine Electronic Control System

Explains the EECS, its components, and its function in engine operation.

3.3 Clutch

3.4 Gearbox

Covers the gearbox structure, speed unit, and range shifting mechanisms.

3.5 Electrical Part of Gearbox Control

3.6 Rear Axle

Explains the components of the rear axle, including main gear, differential, and final drives.

3.7 Rear Power Take-Off Shaft

3.8 Front Power Take-Off Shaft

3.9 Brakes

Covers general information on the disk brakes and their service control.

3.10 Pneumatic System

3.11 Transmission Hydraulic System

Presents the hydraulic circuit diagram and component locations for transmission systems.

3.12 Front Driving Axle (FDA)

Details the front driving axle, including its central reduction unit and wheel hub drives.

3.13 Electronic System for Rear-Axle Differential Lock Control, Front Driving Axle Drive Control, Front and Rear Power Take Off Shafts Control

Covers the electronic control systems for differential lock, FDA, and PTO shafts.

3.15 Hydrostatic Steering Control

Explains the HSC system, dosing pumps, and steering hydraulic cylinders.

3.16 Hydraulic Lift Linkage (HLL)

Details the HLL system, its components, and hydraulic circuit diagrams.

3.17 Emergency Conditions Indication of Hydraulic Lift Linkage and Transmission Hydraulic System

3.18 Rear Lift Linkage

3.19 Electronic Control System of Rear Lift Linkage

Explains the electronic control system for the rear lift linkage and its components.

3.20 Front Lift Linkage

3.21 Electronic Control System of Front Lift Linkage

3.23 Electrical Equipment

4 INTENDED USE OF TRACTOR

4.1 Instruction Before Tractor Operation

Provides essential instructions and warnings to be read before tractor use.

4.2 Tractor Use

4.3 Safety Measures When Operating the Tractor

Details general safety measures, fire safety, and precautions for operation.

4.4 Tractor Run-in

4.5 Actions in Extreme Conditions

Outlines procedures for stopping the tractor, engine emergency stop, and accident response.

5 COUPLING OF IMPLEMENTS

5.1 General Information

5.2 Types of Implements Coupled with Tractor

5.3 Lift Linkage

5.5 Usage Patterns of Tractor Hydraulic System

5.7 Determination of PTO Shaft and Cardan Shaft Capabilities

5.8 Features of Application of PTO Shafts and Cardan Shafts

5.10 Finding of Total Weight, Loads on the Front and Rear Axles, Tires Holding Capacity and Required Minimum Ballast

6 MAINTENANCE

6.1 General Instructions

Provides general guidelines for all maintenance services, emphasizing engine manual for details.

6.3 Maintenance Procedure

6.4 Scheduled Maintenance Servicing Operations

Details maintenance tasks based on operating hours (shift, 125, 250, 500, 1000 hours).

6.5 Safety Measures During Maintenance and Repair Operations

Provides essential safety requirements for performing maintenance and repair services.

7 FAILURES THAT MAY POSSIBLY EMERGE IN THE ELECTRICAL FACILITIES, HYDRAULIC LIFT LINKAGE AND GUIDELINES FOR TROUBLESHOOTING

7.1 Possible Failures in Electronic Systems

Lists possible failures in electronic systems for gearbox, axles, PTO, and troubleshooting methods.

7.2 Possible Failures in Hydraulic System for RLL and FLL Control

Details possible hydraulic system failures for RLL/FLL control and troubleshooting guidelines.

7.3 Failures of EHS Distributor, Failures Indication, Causes and Troubleshooting Method

Covers EHS distributor failures, indication, causes, and troubleshooting steps.

7.4 Possible Failures in the Electrical Equipment and Guidelines for Troubleshooting

Provides guidelines for troubleshooting electrical equipment failures.