Engine | 541.9 in model 930, 932, 933, 934 |
with code MZ7 (Air compressor, 1-cylinder, regulated) | |
Engine | 541.9 in model 930, 932, 933, 934 |
with code MZ8 (Air compressor, 2-cylinder, regulated) | |
Engine | 542.9 in model 930, 932, 934 |
with code MZ7 (Air compressor, 1-cylinder, regulated) | |
Engine | 542.9 in model 930, 932, 934 |
with code MZ8 (Air compressor, 2-cylinder, regulated) |
W13.30-1180-09
1 | Air compressor | 3 | Check-compressed air reservoir | 8 | Measuring hose | ||
2 | Fitting (working connection) | 5 | Safety valve | 9 | Test kit | ||
2.1 | Compressed-air line | 6 | Connection (for measuring hose) | 10 | Pressure gauge | ||
2.2 | Check-compressed air hose | 7 | Shutoff valve |
W13.30-1188-09
Shown: OM 541.9 with code MZ8 (Air compressor, 2-cylinder, controlled) |
0.1 | Resonator | 4.1 | Control line (air compressor recumbent) | 4.2 | Control line (air compressor upright) |
Danger ! | 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. | |
Danger ! | Risk of injury caused by body parts being pinched or crushed as cab is tilted | Ensure that no one is within the tilting range of the cab as it is being tilted. Always tilt the cab all the way to the end position and secure with the safety strut. | |
Danger ! | 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. | |
| Notes on tilting the cab | ||
| Remove | ||
1 | Start engine and bring to normal operating temperature then switch off engine | Coolant temperature about 70 to 95°C. | |
2 | Tilt cab | ||
3 | Remove air intake duct with resonator (0.1) on air compressor (1) | ||
4.1 | Remove control line (4.1) on air compressor (1) | Vehicles with code MZ7(Air compressor, 1 cylinder, regulated) | |
4.2 | Remove control lines (4.1, 4.2) on air compressor (1) | Vehicles with code MZ8(Air compressor, 2 cylinder, regulated) | |
5 | Remove air line (2.1) on fitting (2) | ||
6 | Check test-compressed air reservoir (3) for perfect working order | ||
| 000 588 00 21 00 Leak tester | ||
Check safety valve as well as all connections with a commercially available leak detection spray. Drain off the existing condensation if necessary. | |||
7 | Attach test-compressed air reservoir (3) with test-compressed air hose (2.2) to fitting (2) | ||
8 | Attach test kit (9) with a measuring hose (8) to test-compressed air reservoir (3) | Test kit | |
| Check | ||
9 | Perform a filling time check | in order to perform the fill time test the engine and the time recording device must be started at the same time. | |
Fill time test (with test compressed air reservoir and test kit) | |||
10 | Evaluate filling time checking | Compare required time with the permissible fill time. | |
Fill time test (with test compressed air reservoir and test kit) | |||
If the permissible filling time is exceeded: | |||
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Replace air compressor (1). | |||
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11 | Perform pressure drop measurement | The factor measured is the pressure drop over the seals in the air compressor (1) in a prescribed period of time. | |
Pressure drop measurement | |||
If the pressure drop is too high: | |||
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Replace air compressor (1). | |||
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12 | Depressurize test-compressed air reservoir (3) at the stopcock (7) | ||
13 | Remove test-compressed air hose (2.2) on fitting (2) | ||
14 | Inspect compressed-air line (2.1) for carbonization | In the event of carbonization, also check compressed air lines between air compressor (1), compressed air drier and the four-circuit protection valve or the EAPU; replace the carbonized parts if necessary. | |
| Install | ||
15 | Attach air line (2.1) to fitting (2) | Union nut, air line to fitting | |
16 | Attach control line (4.1) from air compressor (1) | Engine 541.9, 542.9 with code MZ7 (Air compressor, 1-cylinder, regulated) | |
Banjo bolt, control line to compressor | |||
17 | Attach control lines (4.1, 4.2) on air compressor (1) | Engine 541.9, 542.9 with code MZ8 (Air compressor, 2-cylinder, regulated) | |
Banjo bolt, control line to compressor | |||
18 | Attach air intake duct with resonator (0.1) on air compressor (1) | ||
19 | Start engine and run at idling speed | ||
20 | Check line interfaces on the air compressor (1) for leaktightness | Visual inspection. | |
21 | Turn off engine | ||
22 | Tilt back cab | ||
23 | Print out questionnaire and fill out completely | Only if the air 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 | ||
For a warranty or goodwill claim the removed air compressor (1) must be submitted for inspection together with the completely filled out questionnaire and the test sheet used when testing for oil ejection. |
Air compressor check values |
Number | Designation | ENGINE 541.9, 542.9 with CODE MZ7 | ENGINE 541.9, 542.9 with CODE MZ8 | ||
BE13.30-N-1016-01B | Fill time test (with test compressed air reservoir and test kit) | Volume of test compressed air reservoir | Liter | 40 | 40 |
Permissible fill time | s | 130 | 80 | ||
Specified pressure | bar | 12 | 12 | ||
Engine speed | 1/min | 550 | 550 |
360 589 00 21 00
Test kit