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• Scope: Develop collaborations with automotive service providers to improve service quality and business operations.
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• Scope: Provide business support support and training to women-owned businesses, promoting economic inclusion.
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Volvo L90F Wheel Loader Service Repair Manual Instant Download.pdf
1. Service Information
Document Title: Function Group: Information Type: Date:
Engine, description 200 Service Information 2014/4/2 0
Profile:
WLO, L90F [GB]
Engine, description
D6E
D6E is a straight six-cylinder, four-stroke, turbocharged diesel engine with direct injection and intercooler, as well as wet,
replaceable cylinder liners. The engine is equipped to meet governing legislation according to Tier 3/stage IIIA for exhaust
emissions.
Engine D6E has a fuel system with Common Rail, which is controlled by the software in the engine's electronic control unit
(E-ECU).
The D6E uses V-ACT (Volvo Advanced Combustion Technology). Engine D6EV with ACT features split injection, optimized air
handling and, turbocharger with wastegate. Electronically controlled IEGR (Internal Exhaust Gas Recirculation) reduces NO
contents and reduces emissions without the need for after-treatment of exhausts. All electronic functions in the engine are
controlled by Volvo's latest engine management system, EMS2.
The engine's serial number is stamped on the name plate, on the cylinder block's side and on the valve cover. The engine's
model designation and serial number must be indicated when ordering spare parts.
Figure 1
The cylinders are numbered in sequence, starting at the flywheel. Ignition order: 1-5-3-6-2-4. The engine's rotational
direction is counter-clockwise, seen from the flywheel.
2. Figure 2
Cylinder orientation
Engine protection — Software
The function informs the operator and limits the engine's rpm and torque as well as machine speed to prevent any engine
damage. Engine shut-off takes place first when speed is below 2 km/h (1.2 mph). This makes it possible to move the
machine away from hazardous situations before engine shut-off takes place.
The function is monitored by the engine control unit E-ECU and, depending on which component is generating the alarm,
then any of the following functions is activated:
reduction of engine's torque
limitation of engine's rpm
limitation of machine speed
engine shut-down
See also , , and
370 Wiring diagram 202 370 Wiring diagram 203 370 Wiring diagram 204 370 Wiring diagram 206
Input signals Conditions for output functions Output functions
Engine oil pressure, SE2203 (Critical) Low engine oil
pressure
Red central warning
Warning — Low engine oil
press.
Warning — Stop vehicleTurn
Off Engine
Reduction of engine's torque
Low engine oil pressure
No or incorrect signal from the
sensor
Amber central warning
Check — Engine failure
Fuel control valve (FCV),
PWM2303
Electrical malfunction.
Red central warning
Warning — Stop vehicleTurn
Off Engine
Check — Injection system
failure
Reduction of engine's torque
Reduces rail pressure with
pressure relief valve (PRV)
Rail pressure, SE2309 No or incorrect signal from the
sensor
Red central warning
Warning — Stop vehicleTurn
Off Engine
Check — Injection system
failure
Limitation of engine rpm to
1100 rpm
Reduces rail pressure with
3. pressure relief valve (PRV)
EGR-valve, MA2504 Mechanical or electrical
malfunction
Amber central warning
Check — Engine system failure
Reduction of engine's torque
by max. 7% (to reduce the
turbo's rpm)
Charge air temperature,
SE2507
(Critical) High charge-air
temperature 92–100 °C (198–
212 °F)
Red central warning
Warning — Stop vehicleTurn
Off Engine
Warning — High charge-air
temp. engine
Reduction of engine's torque
dependent on charge-air
temperature and engine rpm
High charge-air temperature >
92°C / No or incorrect signal
from the sensor
Amber central warning
Check — High charge-air
temp. engine
Reduction of engine's torque
dependent on charge-air
temperature and engine rpm
Coolant level, SE2603 (Critical) Low coolant level
Red central warning
Warning — Coolant level low
Low coolant level
Amber central warning
Check — Coolant level
lowCheck at next stop
Coolant temperature, SE2606 (Critical) High coolant
temperature 103–105 °C (217–
221 °F)
Red central warning
Warning — Stop vehicleTurn
Off Engine
Warning — High coolant
temp. engine
Reduction of engine's torque
dependent on coolant
temperature and engine rpm
High coolant temperature
>100 °C (212 °F)
Amber central warning
Check — High coolant temp.
engine
Reduction of engine's torque
dependent on coolant
temperature and engine rpm
Electrical malfunction.
Amber central warning
Check — Engine failure
4. Engine rpm flywheel, SE2701 No or incorrect signal from the
sensor
Amber central warning
Check — Engine failure
Reduction of engine's torque
by 2% per second
Max. torque engine 90%
System error common rail Defective functionality in the
system
Red central warning
Warning — Stop vehicleTurn
Off Engine
Check — Injection system
failure
Reduction of engine's torque
Limitation of rail pressure to
80 MPa (800 bar), (11600 PSI)
Limitation of engine rpm to
1100 rpm
System error power and
torque output
Defective functionality in the
system
Red central warning
Warning — Stop vehicleTurn
Off Engine
Check — Injection system
failure
Reduction of engine's torque
Limitation of rail pressure to
80 MPa (800 bar), (11600 PSI)
Limitation of engine rpm to
1100 rpm
Pressure reducing valve (PRV)
rail pressure
Defective functionality in the
system
Red central warning
Warning — Stop vehicleTurn
Off Engine
Check — Injection system
failure
Reduction of engine's torque
Limitation of engine rpm to
1100 rpm
Engine shut-off after 5
seconds if speed is < 2 km/h
(1.2 mph)
Monitoring transmission oil
temperature
See
421 Hydraulic transmission,
description
Red central warning
Warning — High transmission
oil temp.
Limitation of engine rpm to
1500 rpm
Monitoring slipping
transmission
See
421 Hydraulic transmission,
description
Warning — Stop vehicleTurn
Off Engine
Check — Transmission failure
Limitation of engine rpm to
1500 rpm
Engine speed (engine speed for E-ECU) — Software
5. This function monitors boost pressure and informs the operator if there is a system malfunction.
Engine speed is used internally in the E-ECU for engine control and as input signal for engine protection.
In case of engine speed sensor malfunction, the E-ECU uses sensor SE2703 for camshaft speed instead.
See also 370 Wiring diagram 202
Input signals Conditions for output functions Output functions
Monitoring,
SE2701
System malfunction, signal missing or abnormal
frequency
See Diagnostics
Amber central warning
Check — Engine system
failure
Reduction of engine's
torque I (engine
protection)
Motor On/Off — Software
Engine On/Off is used as a condition in software functions to define when the engine is considered to be On and Off,
respectively.
See also .
370 Wiring diagram 201
Input signals Conditions for output functions Output functions
Engine speed < 50 rpm Engine = Off
Engine speed,
SE2704
Engine speed > 600 rpm Engine = On
Automatic engine shutdown — Software
The function control engine shut-off when the conditions according to the table have been fulfilled, and informs the
operator that the engine will be shut off within 1 minute. When the engine is shut off the parking brake will also be applied.
The operator can interrupt engine shutdown by affecting the throttle pedal, hand throttle, or the gear selector.
See also , , and
370 Wiring diagram 201 370 Wiring diagram 205 370 Wiring diagram 404 370 Wiring diagram 408
Input signals Conditions for output functions Output functions
Overall conditions for the function
VCADS Pro parameter FAU "On"
VCADS Pro
parameter FAU
VCADS Pro
parameter FAV
Directional gear,
SW4205
Throttle pedal,
SE2702 APS
Hand throttle,
SE2701
Engine On/Off
Travel speed
1.
2.
3.
Activation of the
function automatic
engine shut-off (4–50
min.)
When 1 minute remains
of set time Check —
AutomaticEngine
shutdown is shown. [T1]
Engine shutdown and
parking brake is applied
(MA5501 without
voltage)
VCADS Pro parameter FAV "4–99 minutes"
Directional gear in position N
Accelerator pedal < 5%
Hand throttle not activated
Engine On
Travel speed < 5 km/h (3 mph)
[T1]Engine shutdown is interrupted in case of activation of throttle pedal, hand throttle, or if the gear selector is moved to
position F or R.
Increased engine speed — Software
The function prevents reduction of engine rpm in case of high power usage.
6. When operating in forward or reverse, the engine speed > 850 rpm (L60–70) / 950 rpm (L90), the function is activated if the
throttle pedal is let up quickly or the engine speed drops quickly.
If the engine speed is > 1150 rpm and the function is activated, the engine speed will drop normally to 1150 rpm, then after
the time delay the controlled engine speed reduction is engaged.
When the engine speed drops to "increased engine speed" 850 rpm (L60–70) / 950 rpm (L90) (7), it will remain until the gear
selector is moved to Neutral position, and controlled engine speed reduction takes place to lower idle speed.
See also and .
370 Wiring diagram 201 370 Wiring diagram 205
Input signals Conditions for output functions Output functions
Throttle pedal,
SE2702
Engine speed,
SE2704
Gear selector
VCADS Pro
parameter,
Increased engine
speed (HKS)
VCADS Pro parameter, Increased engine speed
activated
Activation conditions:
Engine speed > 850 rpm (L60–70) / 950 rpm (L90)
Fast throttle pedal movement or fast engine
speed reduction
Gear selector Forward or Reverse
The function Increased
engine speed is
activated
Figure 3
Function diagram
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Throttle pedal movement
Normal engine speed reduction
Engine speed conditions, 850 rpm (L60–70) / 950 rpm (L90)
Start of controlled engine speed reduction, 1150 rpm
Time delay before controlled engine speed reduction is activated
Controlled engine speed reduction
Increased engine speed
Gear selector in Neutral position
Controlled engine speed reduction
Idle speed, 700 rpm
7. Service Information
Document Title: Function Group: Information Type: Date:
E-ECU, MID 128, changing
non-programmed ECU
200 Service Information 2014/4/2 0
Profile:
WLO, L90F [GB]
E-ECU, MID 128, changing non-programmed ECU
Op nbr 200-068
VCADS Pro VCADS Pro Service Tool
88890180 Interface
88890027 Cable
1. Place the machine in service position 1, see .
191 Service position
2. Connect VCADS Pro and perform the operation 28423-3 MID 128 ECU, programming.
3. Open the engine hood on the left side.
4. Unplug connectors from the E-ECU and loosen the cable harness clamps.
Figure 1
1.
2.
Connectors
Cable harness clamps
5. Change E-ECU.
6. Plug in the connectors for the E-ECU and install the cable harness clamps.
7. Turn on the voltage with the battery disconnector.
8. Finish VCADS Pro operation 28423-3 MID 128 ECU, programming.
9. Start the machine and check that no error messages appear.
10. Restore the machine to operating condition.
8. Service Information
Document Title: Function Group: Information Type: Date:
E-ECU, MID 128, changing
pre-programmed ECU
200 Service Information 2014/4/2 0
Profile:
WLO, L90F [GB]
E-ECU, MID 128, changing pre-programmed ECU
Op nbr 200-070
VCADS Pro VCADS Pro Service Tool
88890180 Interface
88890027 Cable
1. Place the machine in service position 1, see .
191 Service position
2. The new control unit has basic set parameters for the machine. If it is possible to read out customer parameters,
connect VCADS Pro and perform the operation 17030-3 Parameter, programming. Save all read parameters to job
card.
The operation is used to read out customer parameters from the old control unit to enable later comparison with
parameters in the new control unit.
3. Open the engine hood on the left side.
4. Unplug connectors from the E-ECU and loosen the cable harness clamps.
Figure 1
1.
2.
Connectors
Cable harness clamps
5. Change E-ECU.
6. Plug in the connectors for the E-ECU and install the cable harness clamps.
7. Turn on the voltage with the battery disconnector.
8. If customer parameters have been read out from the old control unit, compare these to the parameters in the new
control unit.
9.
Connect VCADS Pro and perform the operation 17030-3 Parameter, programming. Save all read
parameters to job card.
Compare parameter settings on the job cards.
Perform operation 17030-3 Parameter, programming and change customer parameters according to job
card for the old control unit.
9. Start the machine and check that no error messages appear.
10. Restore the machine to operating condition.
10. Service Information
Document Title: Function Group: Information Type: Date:
Engine, removing 210 Service Information 2014/4/2 0
Profile:
WLO, L90F [GB]
Go back to Index Page
Engine, removing
Op nbr 210-070
9998547 Lifting tool
Sling 1 m (3.3 ft)
Sling 3 m (9.8 ft), 2 pcs.
Lifting eyes M12, 4 pcs.
Ratchet block 750 kg (1653 lb)
Lift ring
Shackle, 4 pcs
Starter motor wrench 17 mm
1. Remove the engine hood, see .
821 Engine hood, removing
2. Drain the engine oil at the drain point. Volume, see: .
030 Engine, capacities
Figure 1
1. Drain point for engine oil
3. Disconnect the (red) electric power cable and squib cable (gas generator cable) from the control unit to deactivate
the fire suppression system.
11. Figure 2
1.
2.
Squib cable (gas generator cable)
Electric power cable
4. Drain the transmission oil. Volume, hydraulic transmission, see 030 Hydraulic transmission, capacity
5. Remove the mudguards and the side panels on the hydraulic tank. Weight, fender: approx. 30 kg (66 lbs).
Figure 3
1.
2.
3.
Side panel
Sling 1 m
Mudguard
6. Drain the hydraulic oil. Volume, hydraulic tank: see 030 Hydraulic system, volume
7. Remove the lower engine covers (3), lower grating covers (1) and the bottom plates (2) on both sides. Disconnect
the ground cable (4) from the intermediate wall.
12. Figure 4
8. Disconnect the upper coolant hose from the engine and radiator.
Remove the bolts for the bracket for coolant pipe.
Disconnect the coolant hose from the engine.
Disconnect the hoses from the engine and intercooler.
Disconnect the air hose from the alternator.
Disconnect the clamping from the frame.
Figure 5
13. 1.
2.
3.
4.
5.
6.
7.
Charge air pipe
Coolant hose
Charge air pipe
Charge air pipe
Bracket, coolant hose
Coolant hose
Charge air pipe
9. NOTICE
Refrigerant under pressure. Do not disconnect any hoses or connections on the air conditioning, thereby
involuntary releasing refrigerant.
Unplug connector MA8701 on the AC-compressor. Remove the belt guard and loosen the belt from the AC-
compressor. Disconnect the adjusting rod from the engine.
Remove the AC compressor from its bracket and lay the compressor on the wheel and the condenser on the
hydraulic oil tank.
Figure 6
1. AC Compressor
10. Unplug the connectors (1) for E-ECU. Disconnect the cable harness from the intermediate wall.
Disconnect the hose from the air filter (2).
Mark the connections for the fuel filter bracket (3). Disconnect the fuel hoses from the fuel filter bracket. Plug
opened connections.
Disconnect the sensor for water in fuel (SE2302).
14. Figure 7
11. Secure the intermediate wall. Remove the attaching bolts on both sides. Remove the intermediate wall. Weight,
intermediate wall: approx. 50 kg (110 lbs)
Figure 8
1.
2.
Sling 3 m (9.8 ft)
Lifting eye M12 (2 pcs.), Nut M12 (2 pcs.), Shackle (2 pcs.)
Left side
12. Disconnect the electric connections for the preheating coil.
13. Unplug the connector for the oil level/oil temperature sensor (SE2202/2205). Disconnect the engine heater cable, if
installed. Disconnect the coolant hose from the oil cooler
15. 14. Remove the attaching clamp (1) for the AC hoses on the flywheel housing.
Unplug the connector ED by lifting the catch with a screwdriver on the connector's underside and at the same time
loosen the centre screw.
Figure 9
1.
2.
Attaching clamp
Connector ED
Figure 10
1.
2.
3.
4.
Connector ED
Centre screw
Bracket
Screwdriver
15. If the machine is equipped with reversible fan:
Remove the fuel filter.
16. Disconnect the hose connections form the pump (1) and plug the connections. Remove the pump. Weight, pump:
approx. 16 kg (35 lbs).
Figure 11
Right side
17. Remove the alternator's rear cover. Disconnect the cable harness and air hose for the alternator.
16. 18. Remove the starter motor's (1) protective plate. Mark and disconnect the cable harness from the starter motor and
from the grounding point (2).
Disconnect the hose from the air filter (3).
Figure 12
19. Remove the lower charge-air pipe.
20. Remove the front plate on the fan bracket's bottom plate.
Under the machine
21. Remove the return pipe between the transmission and flywheel housing.
Figure 13
1.
2.
Mounting bracket
Return pipe
22. Disconnect the coolant hose in front of the engine mount.
23. Remove the brace for the engine's oil drain hose.
17. 24. Connect the lifting device. Adjust the lifting device to the correct angle.
Take up the slack in the lifting device.
Figure 14
1. 9998547
25. Remove the bolts for the engine mount. Turn the mount aside.
Figure 15
1.
2.
Attaching bolt, engine mounting
Attaching bolt, engine pad
26. Lift the engine approx. 30 mm (1.2 in) and place a spacer of approx. 110 mm (4.3 in) between the transmission and
the rear axle bridge. Lower until the transmission is resting on the spacer.
27. Detach the engine from the transmission.
19. Service Information
Document Title: Function Group: Information Type: Date:
Engine, removing 210 Service Information 2014/4/2 0
Profile:
WLO, L60F, L70F, L90F [GB]
Go back to Index Page
Engine, removing
Op nbr 210-070
9998547 Lifting tool
Sling 1 m (3.3 ft)
Sling 3 m (9.8 ft), 2 pcs.
Lifting eyes M12, 4 pcs.
Ratchet block 750 kg (1653 lb)
Lift ring
Shackle, 4 pcs
Starter motor wrench 17 mm
1. Remove the engine hood, see .
821 Engine hood, removing
2. Drain the engine oil at the drain point. Volume, see: .
030 Engine, capacities
Figure 1
1. Drain point for engine oil
3. Drain the transmission oil. Volume, hydraulic transmission, see 030 Hydraulic transmission, capacity
4. Remove the mudguards and the side panels on the hydraulic tank. Weight, fender: approx. 30 kg (66 lbs).
20. Suggest:
If the above button click is invalid.
Please download this document
first, and then click the above link
to download the complete manual.
Thank you so much for reading
21. Figure 2
1.
2.
3.
Side panel
Sling 1 m
Mudguard
5. Drain the hydraulic oil. Volume, hydraulic tank: see 030 Hydraulic system, volume
6. Remove the lower engine covers (3), lower grating covers (1) and the bottom plates (2) on both sides. Disconnect
the ground cable (4) from the intermediate wall.
Figure 3
7. Disconnect the upper coolant hose from the engine and radiator.
Remove the bolts for the bracket for coolant pipe.