Calibrate level


Calibration of level shall be performed when control module has been replaced. Checking pressure gauges should be connected to monitor the bellows pressure which should not go above 7 bar. Risk of rupture in case of too high pressure. See the table below to see which spacers fit for each vehicle.

Note:

When calibrating the vehicle will be moved up and down. Therefore it is extremely important that no persons or equipment remain in the area around or under the vehicle's frame to prevent crushing injuries!

Test conditions:

Procedure:

  1. Set ride height:

    • Raise the vehicle.

    • Does not apply to vehicles with code A00: Insert spacers (U-bars) at the front between bearing bracket and the frame's lower beam flange by the rubber pads.

    • For vehicles with code A00: Measure in ride height as shown.

    • Insert spacers rear between axle and frame.

    • Lower the vehicle on the spacers.

    • Calibrate driving position.

  2. Set upper end-position:

    • Raise the vehicle to mechanical stop.

    • For vehicles with spacers in upper position, insert these in place and lower the vehicle on them.

    • Bellows pressure on the rear axle should not be above 2 bar on vehicles without load.

    • Calibrate upper position.

  3. Set lower end-position:

    • Remove spacers.

    • Lower the vehicle to mechanical stop.

    • Checking pressure gauges read approx. 0 bar.

    • Calibrate lower end-position.

  4. End the diagnosis and turn off the ignition for at least 5 seconds to store the calibration.

  5. The function is done.

    • If the function fails, check the test conditions and repair any faults.

Information for spacers: Read in the table below which type of spacers fits the vehicle. Vehicle type, model designation can be read out in the chassis number as follows in the example: WDB 9302041FXXXXXX.

Front axle:

Does not apply to vehicles with code A00:

For vehicles with code A00:

Then read the table below to use the right height.

Vehicle typeWheel configurationSpacer size (h) in mm 
  Ride heightUpper level
930.03, 950.03/53L 4x285-
930.04, 950.04/05L 4x2 n. R.60-
930.05L 4x2 n. R. Car transport30-
930.20, 950.20/60L 6x285-
930.21, 950.21/61L 6x2 n. R.60-
930.24, 932.24, 950.24L 6x4110-
934.03, 944.03, 954.03/53LS 4x285-
934.04/05, 950.54, 954.04/05LS 4x2 n. R.60-
934.06, 954.06LS 4x2 Lowliner60-
934.23, 944.23, 954.236 lx2/285-
934.24, 944.24LS 6x4110-
950.24L 6x455-
957.54L 4x2 n. R. ECONIC60-
957.65L 6x2/4 ECONIC60160
957.66L 6x2/4 n. R. ECONIC60-
957.68L 6x4 n. R. ECONIC45-
970.21/22/23 with code A00-222-
970.24/25/26/27 with code A00-222-

Rear axle:

Read the table below to use the right spacer for the rear axle.

Vehicle typeSpacer size (h) in mm 
 Ride heightUpper level
375.35, 930.03 /20 /22, 934.22 /23, 944.23, 375.4, 934.03, 944.03, 930.24, 932.24, 934.24 91-
950.03 /20 /22 /24 /53 /60 /62, 954.22 /23, 957.54 /65 /66, 954.03 /53 without CODE (CH1) 5th wheel connection height 1,100 mm, 952.24, 954.24, 957.68 without CODE (A91) front axle straight version.91170
930.05, 934.05,40-
950.05, 954.0540170
930.24, 932.24, 934.24108-
950.24, 952.24, 954.24, 957.68 with CODE (A91) Front axle straight version.108170
934.04 /0658-
954.04 /06 without CODE (CH1) 5th wheel connection height 1,100 mm58170
930.04, 930.21, 375.4, 934.03 /04 /06, 944.0370-
950.04, 950.21/ 54/ 61, 954.03 /04 /06 /53 with CODE (CH1) 5th wheel connection height 1,100 mm70170
 Rear axle model
Ride height
970.2, 975.2 with engine type 904, not CODE (MP7) prepared for retrofitting of FRIGOBLOCK G7.5/G12. 970.2 /6, 974.2, 975.2 with engine type 906 with CODE (MP7) prepared for retrofitting of FRIGOBLOCK G7.5/G12.745.503/510, 770.001, 771.000/ 001.
129
970.2, 975.2 with engine type 904, not CODE (MP7) prepared for retrofitting of FRIGOBLOCK G7.5/G12. 970.2 /6, 974.2, 975.2 with engine type 906 with CODE (MP7) prepared for retrofitting of FRIGOBLOCK G7.5/G12.770.000
145
970.2, 975.2 with engine type 904, with CODE (MP7) prepared for retrofitting of FRIGOBLOCK G7.5/G12.770.000
164
970.2, 975.2 with engine type 904, with CODE (MP7) prepared for retrofitting of FRIGOBLOCK G7.5/G12.742.503/ 510, 770.001, 771.000/ 001
180
 Rear axle model
Upper level
970.2/ 6, 974.2, 975.2742.503/ 510, 770.001, 771.000
265
970.2/ 6, 974.2, 975.2770.000
248