Check compressor for oil ejection

AR13.30-G-0005B

Check compressor for oil ejection

11.10.2018

Engine

900.915/916, 902.923/924/935, 904.927/928, 906.935/955 in model 405

Engine

900.920/921, 904.952/953, 924.916/923/931 in model 437.4

Engine

934.97 in model 437.4

Engine

934.97, 936.97 in model 405

Shown on engine 934.9 in model 405

1

Compressor

3

Compressed-air line

2

Control line

4

Compressed-air hose

Shown on engine 934.9 in model 437.437

2

Control line

3.1

Compressed-air line

2.1

Control line

4

Compressed-air hose

3

Compressed-air line

4

Compressed-air hose

5

Measuring hose

6

Adjustment lever

7

Adapter

8

Compressed air outlet

9

Pressure gage

10

Test sheet

Oil ejection diagnostic findings normal (visibly black but perceptibly dry)

A

Ø 60 mm

Oil ejection diagnostic findings too high (visibly black but perceptibly wet)

A

Ø 60 mm

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A



Check

1

Prepare test sheet (10) for the oil ejection test.



Test sheet for oil ejection test on compressor

WF58.50-G-1330-03B

2

Start engine and warm up to operating temperature.

 Coolant temperature between 70 and 95 °C

3

Switch off engine.

4

Switch on ignition.

5.1

Tilt cab to repair position.

Model 405, 437.42/43

AR60.80-G-0005B

5.2

Open hood.

Model 437.465

 See information from body manufacturer.

6.1

Remove the control line (2) from the compressor (1).

If the control line (2) is present and accessible on the compressor (1).

6.2

Remove control line (2.1) from control line (2).

If the control line (2) is present and not accessible on the compressor (1).

7.1

Remove air line (3) from the threaded fitting of compressor (1).

If the air line (3) on compressor (1) is accessible.

7.2

Remove air line (3.1) from air line (3).

If the air line (3) on the compressor (1) is not accessible.

8

Clean the compressed air hose (4) of the adapter (7) inside.

Cleaner

*BR00.45-Z-1025-04A

 Adapter

*000589039000

9

Attach compressed air hose (4) of the adapter (7) to the threaded fitting of the air compressor (1) or to the air line (3).

10

Fasten adapter (7) using a cable tie to a suitable position on the vehicle.

11

Attach pressure gauge (9) with measuring hose (5) to the adapter (7).

 Commercially available devices/tools
Pressure gage

 Use a pressure gauge (9) with a measuring range of 5 to 50 bar.
As an alternative to the pressure gauge (9), the  test kit can also be used.

 Test kit

*360589002100

12

Fully open compressed air outlet (8) using the adjustment lever (6).


The compressed air outlet (8) must be opened fully before starting the engine.
The valve on the  adapter (7) will be damaged otherwise by an excessively high back pressure.

13

Start engine and increase the engine rpm from idle speed to the maximum governed engine rpm with the engine start button

 In order to increase the engine rpm, press the engine start button and keep it pressed.

14

Close adjustment lever (6) until the set required back pressure is readable on the pressure gauge (9).

 Allow the engine to run at the maximum governed rpm for at least 30 s, before the adjustment lever (6) is actuated.

 The oil ejection check must always take place with the required back pressure otherwise the result will be falsified.

Check for oil ejection (with test adapter and pressure gauge)

*BE13.30-N-1004-01I

15

Hold the test sheet (10) at a distance of about 10 cm in front of the compressed air outlet (8).

Check for oil ejection (with test adapter and pressure gauge)

*BE13.30-N-1004-01I

16

Switch off engine.

17

Compare test sheet (10) with the findings pictures.

Notes on oil consumption/oil loss with compressors

AH13.30-N-1000-01B

If problems exist,



Replace compressor (1).

Engine 900.915/916, 902.923/924/935, 904.927/928, 906.935/955 in model 405
Engine 900.920/921, 904.952/953, 924.916/923/931 in model 437.42/43
Engine 924.916 in model 437.465 up to 3/31/17

AR13.30-G-0001BC

Engine 924.916 in model 437.465 as of 4/1/17

AR13.30-G-0001CM

Engine 934.97 in model 405

AR13.30-G-0001UV

Engine 936.97 in model 405

AR13.30-G-0002US

Engine 934.97 in model 437.4

AR13.30-G-0001UH

18

Check compressed air lines (3, 3.1) for leaktightness.

If problems exist,



replace compressed air lines (3, 3.1).

19

Check compressed air lines between compressor (1), the compressed air drier and four-circuit protection valve for carbonization.

Only in the case of carbonization of the air line (3).

If problems exist,



Replace the respective air line.

20

Remove adapter (7) with compressed air hose (4), measuring hose (5) and pressure gauge (9).

21.1

Attach compressed air line (3) to the threaded fitting of compressor (1).

If the air line (3) on compressor (1) is accessible.

21.2

Attach compressed air line (3.1) to compressed air line (3).

If the air line (3) on the compressor (1) is not accessible.

22.1

Attach control line (2) to the compressor (1).

If the control line (2) is present and accessible on the compressor (1).

22.2

Attach control line (2.1) to control line (2).

If the control line (2) is present and not accessible on the compressor (1).

23

Start engine and run at idle speed.

24

Check compressed air line (3) and control line (2) for leaktightness.

 The control line (2) will only have pressure applied to it after achieving the shutoff pressure.

 Visual inspection.

25

Switch off engine.

26.1

Tilt back cab.

Model 405, 437.42/43

AR60.80-G-0005B

26.2

Close hood.

Model 437.465

 See information from body manufacturer.

27

Print out questionnaire and fully fill in.

Only if the compressor (1) was replaced and if the cost acceptance was applied for as part of the warranty and goodwill.



Questionnaire for checking delivery rate and oil ejection of compressor, form

OF13.30-G-1000-02B

 For a warranty or goodwill claim the removed compressor (1) must be submitted for inspection together with the completely filled out questionnaire and the test sheet used when testing for oil ejection.

Check values for compressor

Number

Designation

Engine 934.97, 936.97 in model 405

Engine 934.97 in model 437.4

BE13.30-N-1004-01I

Check for oil ejection (with test adapter and pressure gauge)

Back pressure to be set

bar

5

5

Test duration

min

1

1

Check values for compressor

Number

Designation

Engine 900.915

Engine 900.916

BE13.30-N-1004-01I

Check for oil ejection (with test adapter and pressure gauge)

Back pressure to be set

bar

5

5

Test duration

min

1

1

Check values for compressor

Number

Designation

Engine 900.920/921, 924.923/931

Engine 902.923/924

BE13.30-N-1004-01I

Check for oil ejection (with test adapter and pressure gauge)

Back pressure to be set

bar

5

5

Test duration

min

1

1

Check values for compressor

Number

Designation

Engine 902.935, 904.927/928, 906.935/955

Engine 904.952/953, 924.916

BE13.30-N-1004-01I

Check for oil ejection (with test adapter and pressure gauge)

Back pressure to be set

bar

5

5

Test duration

min

1

1

Repair materials

Number

Designation

Order number

BR00.45-Z-1025-04A

Cleaner

A 005 989 19 71