Belarus 3522.5 User Manual

3522.5-0000010 РЭ
72
2.18 Switching unit
The switching unit 3 (figure 2.18.1) is intended for current supply, its distribution be-
tween tractor power consumers and for protection of electrical lines against short-circuit
and current load excess, it is a central distributing unit, to which wiring harnesses of differ-
ent systems of tractor electrical equipment are connected by means of straps. Using of the
switching unit ensures convenience of diagnostics and repair of tractor electrical equip-
ment during its operation.
Your tractor may be equipped with two types of switching units – БКА-7.3722 or
БК-1, which are interchangeable.
Place of the switching unit installation is in the cab, on a metal beam of plastic shell
fixation, between the dashboard 4 and a windscreen.
To access relay and fuses of the unit 3 it is needed to unscrew two quick detach-
able screws 1, then remove a plastic cover 2. The unit also has a plastic cover, intended
for dust protection.
1 – screw; 2 – cover; 3 – switching unit; 4 – dashboard.
Figure 2.18.1 – Switching unit installation
The unit consists of thirty cutout fuses 1 (figure 2.18.2) (FU1-FU30) and nineteen
electromagnetic relays 4 (K1-K19), commutating current supply for consumers, a set of
spare fuses 5. Signal led lamps of red color 2, located on the front board near each fuse,
are intended for indication of a corresponding fuse blow out. A signal led lamp of green
color 3 indicates turning on of the switching unit.
а) БКА-7.3722
https://tractormanualz.com/

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.