Volvo MC90B Skid Steer Loader Service Repair Manual Instant Download.pdf

Service Information
Document Title: Function Group: Information Type: Date:
Engine Tier 3 introduction 200 Service Information 2014/3/19
Profile:
SSL, MC90B [GB]
Engine Tier 3 introduction
Model Engine Part number Variant
MC60B D2.2 DCBE3 11852928 Standard hydraulics
Pilot Standard hydraulics
MC70B D2 DCAE3 11852929 Standard hydraulics
Self level hydraulics
Pilot Self level hydraulics
Pilot High Flow self level
MC80B D3.4 DCBE3 11852930 Standard hydraulics
MC90B/MC110B D3.4 DCCE3 11852931 Standard hydraulics
MC90B/MC110B HF D3.4 DCGE3 11852932 Standard hydraulics

Service Information
Engine for MC80B, MC90B
and MC110B, description
200 Service Information 2014/3/19
Profile:
SSL, MC90B [GB]
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Engine for MC80B, MC90B and MC110B, description
The engine is a vertical in-line, four cylinder, four stroke, water-cooled diesel engine with a direct injection system. The
engines for MC90B and MC110B are also equipped with a turbocharger of radial flow type. The valve mechanism receives its
movement from the camshaft via rods and rocker arms. Turning direction is counter-clockwise seen from the flywheel. Firing
order is 1-3-4-2 and the first cylinder is on the flywheel side.
The fuel system is direct injection via a rotary high pressure pump, a so called MP pump. The pump has only one plunger
cylinder to pressurize the fuel and a distribution shaft which regulates the fuel flow to each cylinder.
The lubrication system consists of forced lubrication with a trochoid pump.
The air system consists of a dual element, self cleaning air cleaner.
The cooling of the engine is performed by a high capacity radiator and a hydraulic oil cooler. The type of fluid used in the
cooling system consists of 50% ethylene glycol and 50% water, which gives an anti-freeze protection.
Figure 1
Engine, MC80B (Volvo D3.4A CAE2SW3U)
Figure 2
Engine, MC90B and MC110B (Volvo D3.4A CAE2SW1U,
engine with high flow; Volvo D3.4A CAE2SW2U)

Service Information
Engine, description 200 Service Information 2014/3/19
Profile:
SSL, MC90B [GB]
Engine, description
MC90B, MC110B (D3.4DCEF3, D3.4DCGE3 High Flow )
The engine is a vertical in-line, four cylinder, four stroke, water-cooled diesel engine with a direct injection system. The
engines for MC90B and MC110B are equipped with a turbocharger of radial flow type. The valve mechanism receives its
movement from the camshaft via rods and rocker arms. Turning direction is counter-clockwise seen from the flywheel. Firing
order is 1-3-4-2 and the first cylinder is on the flywheel side.
The fuel system is fed by an electric fuel pump that supplies the fuel to the electronic fuel injection pump.
The lubrication system consists of forced lubrication with a trochoid pump.
The air system consists of a dual element, self cleaning air cleaner.
The cooling of the engine is performed by a high capacity radiator and a hydraulic oil cooler.
Figure 1

Service Information
E-ECU, MID 128, changing
non-programmed ECU
Profile:
SSL, MC90B [GB]
E-ECU, MID 128, changing non-programmed ECU
Op nbr 200-068
VCADS Pro VCADS Pro Service Tool
88890180 Interface
88890027 Cable
This operation also includes required tools and times for applicable parts of the following operations:
 191 Service position 1
1. Place the machine in service position, see .
191 Service position 1
2. Connect VCADS Pro and start the operation 28423-3 MID 128 ECU, programming.
3. Unplug the connectors from E-ECU.
Figure 1
E-ECU
4. Change E-ECU.
5. Plug in the connector.
6. Turn on the voltage with the battery disconnect switch.
7. Finish VCADS Pro operation 28423-3 MID 128 ECU, programming.
8. Start the machine and check that no error messages appear.
9. Restore the machine to operating condition.

Service Information
E-ECU, MID 128, changing
pre-programmed ECU
Profile:
SSL, MC90B [GB]
E-ECU, MID 128, changing pre-programmed ECU
Op nbr 200-070
VCADS Pro VCADS Pro Service Tool
88890180 Interface
88890027 Cable
This operation also includes required tools and times for applicable parts of the following operations:
 191 Service position 1
1. Place the machine in service position, see .
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 start 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. Unplug the connector from E-ECU.
Figure 1
E-ECU
4. Change E-ECU.
5. Plug in the connector.
6. Turn on the voltage with the battery disconnect switch.
7. If customer parameters have been read out from the old control unit, compare these to the parameters in the new
control unit.


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.
8. Start the machine and check that no error messages appear.
9. Restore the machine to operating condition.

Service Information
Engine, removing 210 Service Information 2014/3/19
Profile:
SSL, MC90B [GB]
Engine, removing
Op nbr 210-070
11668023 Lifting tool
WARNING
Hot oil and hot engine coolant can cause severe burns!
NOTICE
Always handle oils and other environmentally hazardous fluids in an environmentally safe manner.
1. Park the machine in the, see 191 Service position 1
2. For lifting the loader arm when engine is not running see 191 Manual lifting of loader arm
3. Switch off the battery .
4. Open the drain valve and drain the coolant to a suitable container.
Figure 1
1. Drain valve
5. Carefully open the fill cap on the radiator to speed up the draining.
6. When the radiator is drained, close the drain valve
7. Transfer the coolant to a container with a cover and label the container as "Used Antifreeze". Dispose of the coolant

at an approved recycling facility.
8. Disconnect the radiator overflow hose from the radiator.
Secure the hose so that the coolant remains in the over flow bottle.
Figure 2
1.
2.
3.
Radiator fill cap
Over flow hose
Over flow bottle
9. Remove the engine cover from the crossmember.
Figure 3
10. Remove the fan guard.
Figure 4

11. Applies to engine equipped with high flow:
WARNING
Hydraulic oil is toxic and may be hot and highly pressurised. If jets of oil should penetrate the skin, medical
advice must be sought immediately. Allow the machine to cool and use protective equipment when
handling hydraulic oil.
Open the drain valve and drain the hydraulic oil in a suitable container.
Figure 5
12. Remove the hose from the oil cooler.
Applies to engine equipped with high flow:
13. Disconnect and plug up the hose for the Charge/Implement pump.
Figure 6
14. Disconnect the upper radiator hose from the engine block.

Figure 7
1.
2.
Lower radiator hose
Upper radiator hose
15. Disconnect the lower radiator hose from the engine block.
Cab heating (Optional)
16. Disconnect the hoses for cab heating (Option) from the engine.
Figure 8
1.
2.
Supply hose
Return hose
17. Close the valve on the fuel supply line at the water separator. Loosen the fuel filter and the water separator and put
them a side.

Figure 9
1.
2.
3.
Water separator
Valve
Fuel supply line
18. Remove the capscrews, locknuts and the washers from the bottom of the radiator.
Figure 10
1.
2.
Lower radiator mountings
Upper radiator mountings
19. Remove the capscrews, washers and locknuts from the top of the radiator.
20. Disconnect and plug the hydraulic hose at the main valve.

Figure 11
1.
2.
Hydraulic hose
Main valve
21. Carefully lift the radiator and oil cooler assembly. Let the hydraulic hose that was connected to the main valve slide
along with the assembly.
Place the assembly a side on a suitable steady support and secure the radiator and oil cooler assembly to the rear
door.
NOTE!
Use care when handling the radiator/oil cooler assembly. To prevent damage to the radiator drain valve, do not
place the radiator on its bottom surface without support blocks used on each side.
Figure 12
WARNING
Do not disconnect or loosen connections for the air conditioning unit (AC). Risk of gas leakage.
Applies to models equipped with AC:
22. Loosen the screw (1) Adjust the adjusting screw (2) on the compressor “bracket” to loosen up the belt. Loosen and
remove the screws that holds the compressor. Put the compressor aside without disconnecting any AC-hoses.

Figure 13
V1059643
1.
2.
Screw
Adjusting screw
23. Disconnect the cable connection to the air cleaner restriction sensor SE2501.
Figure 14
V1062307
1. SE2501
24. Loosen the hose clamp and plastic tie that secures the air intake hose to the turbo charger. Plug or cover the fitting
to prevent entry of dirt or debris into the engine.

Figure 15
1.
2.
Air intake hose
Turbo charger
25. Remove the air cleaner assembly out of the frame.
26. Remove the bracket for the exhaust pipe.
27. Loosen and remove the exhaust pipe between the turbo charger and muffler.
Figure 16
1. Bracket
28. Tag, disconnect and plug the fuel supply– and fuel return line at the fuel injection pump.
Figure 17
1.
2.
Fuel supply line
Fuel return line
29. Disconnect the engine harness from the main chassis harness.
4 connections : CN7A, CN7B, CN7C and CN1

Figure 18
30. Disconnect the harness for the EECU.
Figure 19
31. Tag and remove the cables from the positive (+) terminal on the starter.
Figure 20
1.
2.
3.
Positive (+) terminal
Manoeuvre
Ground wire (The connection point for the ground wire can vary for different engine models)

32. Tag and remove the cable and the connector to the alternator.
Figure 21
33. Remove the ground wire (1) from the engine.
Figure 22
34. Connect the lifting equipment 11668023 Lifting tool to the front (1) and rear (2) lift eyes. Remove all slack in the lift
equipment to prevent the engine from unintended movement during removal of the engine mounting hardware.
NOTE!
The engine must be lifted using an overhead or frame type hoist and lift sling or frame, rated at a minimum
capacity of 500 kg (1100 lb).

Figure 23
35. Remove capscrews from the rear engine mount.
Figure 24
36. Remove the capscrews from the front engine mount.
Figure 25
37. Lift and move the engine slightly toward the rear of the machine until the transmission universal drive joint drops
free of the splined transmission drive shaft.

Weight, approximately: 240 kg (530 lb)
Figure 26
38. Slowly and carefully lift the engine from the machine.
39. Place the engine on engine stands or similar, strong and stable enough to support the weight of the engine.
NOTE!
If this engine is to be replaced, it may be necessary to remove all the hardware that will be used on the
replacement engine. These components may not be included with the replacement engine.

Service Information
Engine, removing 210 Service Information 2014/3/19
Profile:
SSL, MC90B [GB]
Engine, removing
Op nbr 210-070
11668023 Lifting tool
9993902 Disassembly tool
9993903 Disassembly tool
WARNING
Hot oil and hot engine coolant can cause severe burns!
1. Put the machine in service position 1, see .
2. Turn off the electric power with the battery disconnect switch.
NOTICE
Always handle oils and other environmentally hazardous fluids in an environmentally safe manner.
3. Open the drain valve and drain the coolant into a suitable container.
Volume, approx.: 10 l (2.7 US gal)
Figure 1
4. Carefully open the filler cap on the radiator to speed up the draining.

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Figure 2
1. Radiator cap
5. When the radiator is drained, close the drain valve.
6. Disconnect the lower end of the gas spring.
Figure 3
1. Gas spring
7. Remove the engine cover from the crossmember.

Volvo MC90B Skid Steer Loader Service Repair Manual Instant Download.pdf

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