Check delivery rate of compressor

AR13.30-G-0004H

Check delivery rate of compressor

08.08.2018

Engine

470.9, 473.9 in model 800.310/320

Compressor, 2-cylinder

Engine

471.9 in model 800.310/320

Compressor, two-stage, provides for optimum fuel consumption

Modification notes

16.08.2017

Work procedure completely modified.

0

Suction connection

3

Check-compressed air hose

8

Measuring hose

0.1

Air intake line

5

Check-compressed air reservoir

9

Stopcock

1

Compressor

6

Safety valve

10

Test kit

2

Fitting (working connection)

7

Connection (for measuring hose)

11

Pressure gage

Shown on compressor (1), 2-cylinder

0

Suction connection

0.1

Air intake line

1

Compressor

2

Fitting (working connection)

2.1

Compressed-air line

4.1

Control line

Shown on compressor (1), two-stage, provides for optimum fuel consumption

0

Suction connection

0.1

Air intake line

1

Compressor

2

Fitting (working connection)

2.1

Compressed-air line

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 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

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-N-5000-01H



Remove

1

Start engine and bring to normal operating temperature then switch off engine

 Coolant temperature approx. 70 °C to 95 °C.

2

Remove air intake duct (0.1) on intake connection (0)

3

Remove air line (2.1) on fitting (2)

4

Remove control line (4.1) from compressor (1)

Only on engine 470.9, 473.9

 This ensures that the compressor (1) is in the delivery phase even if the output of the compressor (1) is impaired by another defect.

5

Check test-compressed air reservoir (5) for perfect working order



000 588 00 21 00 Leak tester

WS13.00-P-0016B

 Check safety valve (6) as well as all connections with a leak detection spray. Drain off the existing condensation if necessary.

6

Attach test-compressed air reservoir (5) with test-compressed air hose (3) to fitting (2)

7

Attach test kit (10) with a measuring hose (8) to test-compressed air reservoir (5)

 Test kit

*360589002100



Check

8

Perform a filling time test

 To test the filling time, start the engine and the time recording device at the same time.
While the engine is running at idling speed, monitor the pressure increase in the test-compressed air reservoir (5).
Upon reaching the prescribed pressure the time recording device must be stopped and the engine also stopped.

Fill time test (with test compressed air reservoir and test kit)

*BE13.30-N-1001-01M

9

Evaluate fill time test

 Compare required time with the permissible fill time.

Fill time test (with test compressed air reservoir and test kit)

*BE13.30-N-1001-01M

If the permissible filling time is exceeded,



Replace compressor (1).

Engine 471.9

AR13.30-G-0002H

ENGINE 470.9

AR13.30-G-0002HA

ENGINE 473.9

AR13.30-G-0002HB

10

Perform a pressure drop measurement

 Measure the pressure drop via the seals in the compressor (1) in a prescribed period of time.

Pressure drop measurement

*BE13.30-N-1002-01M

If the pressure drop is too high:



Replace compressor (1).

Engine 471.9

AR13.30-G-0002H

ENGINE 470.9

AR13.30-G-0002HA

ENGINE 473.9

AR13.30-G-0002HB

11

Depressurize test-compressed air reservoir (5) at the stopcock (9)

12

Remove test-compressed air reservoir (5) with test-compressed air hose (3) at fitting (2)

13

Inspect compressed-air line (2.1) for carbonization

In case of carbonization



Check compressed air lines between compressor (1), compressed air drier and the four-circuit protection valve or the Electronic Air-Processing Unit (EAPU); replace the carbonized parts if necessary.



Install

14

Attach air line (2.1) to fitting (2)

 Union nut, compressed air line to compressor fitting

*BA13.30-N-1010-01M

15

Attach control line (4.1) to compressor (1)

Only on engine 470.9, 473.9

16

Attach air intake duct (0.1) to intake connection (0)

17

Start engine and run at idling speed

18

Check line interfaces on the compressor (1) for leaktightness

 Visual inspection.

19

Turn off engine

20

Print out questionnaire and fill out completely

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-W-1000-02A

 For a warranty or goodwill claim, submit the air compressor (1) for examination, together with the completed questionnaire and the test sheet used when testing for oil ejection.

Compressor

Number

Designation

Engine 470.9, 471.9, 473.9
with code M6M (Air compressor, 2-stage, for optimised consumption)

Engine 470.9, 471.9, 473.9
with code M6L (Air compressor, 2 cylinder)

BE13.30-N-1001-01M

Fill time test (with test compressed air reservoir and test kit)

Volume of test compressed air reservoir

Liter

40

40

Permissible fill time

s

280

100

Specified pressure

bar

12

12

Engine speed

1/min

500

500

Compressor

Number

Designation

Engine 470.9, 471.9, 473.9
with code M6M (Air compressor, 2-stage, for optimised consumption)

Engine 470.9, 471.9, 473.9
with code M6L (Air compressor, 2 cylinder)

BE13.30-N-1002-01M

Pressure drop measurement

Permissible pressure drop

bar

2,5

1

Test duration

min

4

4

 Compressor (compressed air system)

Number

Designation

Engine 470.9

Engine 471.9

BA13.30-N-1010-01M

Union nut, compressed air line to compressor fitting

Nm

75

75

 Compressor (compressed air system)

Number

Designation

Engine 473.9

BA13.30-N-1010-01M

Union nut, compressed air line to compressor fitting

Nm

75