Installing Compressor

Fit compressor on the holder.

Fig 1: Compressor Mounting Screws Tightening Sequence
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Compressor mounting
1. 1.1 Tighten fastening screws in the sequence -1 to 4- using > 9890 - socket wrench E12 > Observe tightening torque/installation sequence for screws 1-3! 10 Nm (7 ftlb.)
Fit lines on the compressor -1- .

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Mounting for lines on compressor

Information

Check the following before installing the air line:
- Check that the cutting ring -1- and Voss threaded joint -2- are still on the air line -3- .
- Check that the air line is fitted correctly.
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Checking air line

Only one marking -1- on the air line should be visible.

Pull the air line briefly against the insertion direction. If it cannot be pulled out, the air line is fitted correctly.

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Checking that air line is fitted correctly
1. 2.1 Connect air lines and tighten Voss threaded joint -4- for the air lines > Tightening torque 3 Nm (2 ftlb.)
2. 2.2 Connect air lines and tighten Voss threaded joint -5- for the air lines > Tightening torque 2 Nm (1.5 ftlb.)
3. 2.3 Secure brackets -3- .
4. 2.4 Connect electric plug connection -2- to the control unit and lock it.
Install levelling system -5- .

Fig 2: Levelling System Mounting Nuts Tightening Sequence - Conventional
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Levelling system mounting - conventional

Fig 3: Levelling System Mounting Nuts Tightening Sequence - PHEV
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Levelling system mounting - PHEV
1. 3.1 Tighten nuts in the sequence -1 to 4- > Tightening torque 8 Nm (6 ftlb.)
Fit suction line -1- on the compressor -2- .

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Mounting for suction line on compressor
1. 4.1 Connect suction line -1- to connection piece and secure with a spring band clamp -3- .
2. 4.2 Secure bracket -4- .
Information

Check the following before installing the air line:
- Check that the cutting ring -1- and Voss threaded joint -2- are still on the air line -3- .
- Check that the air line is fitted correctly.
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Checking air line

Only one marking -1- on the air line should be visible.

Pull the air line briefly against the insertion direction. If it cannot be pulled out, the air line is fitted correctly.

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Checking that air line is fitted correctly
Fit air lines on valve unit -1- . The air line is assigned according to the imprint on the valve unit.

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Mounting for air lines on valve unit
1. 5.1 Connect air lines and tighten Voss threaded joints -2- > Tightening torque 2 Nm (1.5 ftlb.)
2. 5.2 Connect air lines and tighten Voss threaded joint -3- > Tightening torque 3 Nm (2 ftlb.)
Fit wire harness for levelling system -1- .

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Mounting for wire harness for levelling system
1. 6.1 Connect and lock electric plug connections -2- .
2. 6.2 Secure wire harness for levelling system to the brackets -3- .
Fit wire harness for PDCC -1- .

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Mounting for PDCC wire harness
1. 7.1 Secure PDCC wire harness to the brackets -4- .
2. 7.2 Screw in and tighten fastening screw for ground line -3- .
Information

Before connecting the 48 V connectors, check whether the sealing ring -1- is positioned under the locking lugs -2- in the connectors.

Carefully press the sealing ring back over the locking lugs if necessary.

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Correct position of sealing ring
Plug in and lock electric plug connections on the PDCC control unit in the sequence -1 to 5- .

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Sequence for connecting electric plug connections
Fit heat protection panel -1- at the bottom.

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Heat protection panel mounting