PDF Service Manual BT SL 2.0 Product Family - 507 KB
Access the comprehensive Master Service Manual for the BT SL 2.0 product family.
This essential document is the ultimate resource for maintenance, in-depth diagnostics, and complete repair procedures.
It includes detailed diagrams, step-by-step instructions, and crucial technical specifications to assist technicians.
Ensure every service task is performed to factory standards, maintaining the safety and efficiency of your equipment.
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--- Page 1 ---
Master Service Manual
Product family SL
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© BT Industries AB Part number: 170422-040
Issued : 1998-12-18 SSD
--- Page 3 ---
F-code Section C-code
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The table provides information regarding some technical
data, which is of value with daily use of the truck.
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Lifting capacity with rated load, kg 2000
Operating speed without load, m/s 2,9
Operating speed with rated load, m/s 2,0
Max. operating gradient with rated load, % 8
Time of lifting, without load, s 2,5
Time of lifting, with rated load, s 3,0
Time of lowering, without load, s 2,8
Time of lowering, with rated load, s 2,8
Weight without battery, kg 630
Battery (5h discharge) 300 / 450
Weight of battery, kg 280 / 400
Truck’s calculated equivalent acoustic pressure
level according to CE prEN 12053, dB (A) < 70
Truck’s calculated equivalent acoustic pressure
level according to ASME B56.11.5_1992, dB (A) 65
Vibration level, m/s2 0,7
The truck’s lifting capacity, lift height and weight can be found
on the truck’s identification plate.
2 (8) Service Manual 1998-05-07 English
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4 (4) Service Manual 1998-05-07 English
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F-code Section C-code
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Version no T-code
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• Blow electric motors down using compressed air.
• Clean the electrical panels, electronic boards, contactors,
connections, solenoid valves, etc. using a damp cloth and
a cleaning agent.
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All lifting must be carried out on a flat, non-slip and firm sur-
face. Avoid new laid asphalt or asphalt on a hot summer’s
day.
• Apply the parking brake to prevent the truck from moving
during the lift. If the lift applies the brake on the drive
wheel, chock the other wheels so that the truck stands still.
• Select a lifting point so that the lift is as easy as possible
(one corner at a time). If the truck has marked lifting points
on the under side of the chassis these can be used to
obtain a well balanced lift.
• Ensure that the surface under the jack is clean and free
from oil and grease.
• Ensure that your hands and the jack’s lever are free from
oil and grease.
• Use the lever that belongs to the jack. A lever that is too
short requires more force than is necessary. If the lever is
too long there is a risk of the jack being overloaded.
• Support the truck:
• as close to the part of the chassis that is lifted as possible
to reduce the falling height if the truck tips over.
• so that the truck cannot roll.
• 1HYHU raise up the jack to lift higher
• 1HYHU work under a lifted truck unless it is well supported.
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4 (4) Service Manual 1998-10-28 English
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F-code Section C-code
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&RQWHQW6
Version no T-code
2 (2) Service Manual 1998-11-04 English
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F code Section C code
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Version No. T code
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4 (16) Service Manual 1998-06-24 English
--- Page 8 ---
F code Section C code
6/ 6
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Version No. T code
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When the speed lever (R1) is released to the neutral position
or moved in the opposite direction, an alteration in the voltage
on output 509 28763(('5()9$/8( on the electronic
card takes place. At the same time the status on outputs 501
and 502 changes. The transistor regulator senses these chan-
ges and applies the motor brake.
This is achieved by completely disengaging the switch regula-
tors used while driving, and instead using other transistors
(T2) to regulate the generated current from the motor.
These transistors that regulate the brake current are switched
on/off rapidly. While the transistors are not live, the generated
current needs to pass through the battery over K10 and to
B-on the transistor regulator. Inside the regulator, the brake
current passes through the brake diodes and onto the motor
through M- (see picture 3).
When the transistors go live, the brake current passes through
the transistors (T2) to the armature via M- (see picture 4).
Throughout this entire process and until the truck comes to a
complete stop, the shunt field is engaged achieving current
generation inside the armature circuit.
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The transistors (T2) for the generated brake current are not
live.
A1
B-
S1
T1
Ish S2
- M-
A2
+
Shunt
A
Ia A1
T2
K10 B+
14 (16) Service Manual 1998-06-24 English
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F code Section C code
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Version No. T code
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PLQDOGLVSOD\
3,3 ¤¤¤ ¤¤¤ FIELD OPEN Open field winding 1. Field winding not connected
2. Interruption in field winding
3,4 ¤¤¤ ¤¤¤¤ MISSING Missing contactor 1. Main contactor, coil inter-
CONTACTOR ruption
2. Missing main contactor
3. Main contactor not con-
nected
4,1 ¤¤¤¤ ¤ LOW BATTERY Low battery voltage 1. Battery voltage <16 volts
VOLTAGE 2. Corroded battery terminals
3. Loose battery or regulator
connections
4,2 ¤¤¤¤ ¤¤ OVERVOLTAGE Overvoltage 1. Battery voltage > 33 volts
2. Truck operating with con-
nected charger
4,3 ¤¤¤¤ ¤¤¤ THERMAL Over-/under-tem- 1. Temp. >85oC or < - 25oC
CUTBACK perature reduction 2. Truck overloaded
3. Wrong installation of tran-
sistor regulator
4. Operation under extreme
conditions
+3'HUURU This is a sequence error. This error is detected if
the reference voltage (0-5 V) exceeds 25% of the maximum
value when the KSI input is high (pin 16).
8 (18) Service Manual 1998-07-27 English
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F code Section C code
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7UDQVLVWRUSDQHO
Version No. T code
63(&,$/',$*1267,&602'(
In the SPECIAL DIAGNOSTICS MODE, the DIAGNOSTIC
HISTORY FILE of the regulator is displayed. This file contains
all errors logged by the regulator since the file was last clea-
*
MORE INFO DIAGNOSTICS
red. Each error is logged only once in disregard of how many
times the error may have occurred.
To access the SPECIAL DIAGNOSTICS MODE, keep the
MORE INFO button depressed and simultaneously press the
DIAGNOSTICS button. The LED in the DIAGNOSTICS button
lights.
To clear the DIAGNOSTICS HISTORY FILE, switch to the
SPECIAL PROGRAM MODE, select “Clear Diag History" and
press the MORE INFO button for further instructions.
18 (18) Service Manual 1998-07-27 English