Check Crankshaft In Removed State - AR03.20-P-4463-01MNM
Engine 176, 177, 178
| Information on assessing wear of main bearings and main bearing journals | AH03.20-P-1000-02MM | ||
| Notes on assessing wear on connecting rod bearings and connecting rod journals | AH03.10-P-0001-03MM |
CHECK VALUES FOR CRANKCASE
| Number | Designation | Engine 176 | Engine 177 | ||
|---|---|---|---|---|---|
| BE01.40-P-1001-04C | Crankshaft bearing | Basic bore diameter | mm | 68, 500...68, 519 | 68, 500...68, 519 |
| Number 1 | mm | 68, 500...68, 506 | 68, 500...68, 506 | ||
| Number 2 | mm | 68, 506...68, 513 | 68, 506...68, 513 | ||
| Number 3 | mm | 68, 513...68, 519 | 68, 513...68, 519 | ||
CHECK VALUES FOR CRANKCASE
| Number | Designation | Engine 178 | ||
|---|---|---|---|---|
| BE01.40-P-1001-04C | Crankshaft bearing | Basic bore diameter | mm | 68, 500...68, 519 |
| Number 1 | mm | 68, 500...68, 506 | ||
| Number 2 | mm | 68, 506...68, 513 | ||
| Number 3 | mm | 68, 513...68, 519 | ||
CHECK VALUES FOR CRANKCASE
| Number | Designation | Engine 176 | Engine 177 | |
|---|---|---|---|---|
| BE01.40-P-1002-04C | Basic bore width at fit bearing | mm | 21, 160...21, 127 | 21, 160...21, 127 |
CHECK VALUES FOR CRANKCASE
| Number | Designation | Engine 178 | |
|---|---|---|---|
| BE01.40-P-1002-04C | Basic bore width at fit bearing | mm | 21, 160...21, 127 |
CHECK VALUES OF CRANKSHAFT
| Number | Designation | Engine 176 | Engine 177 | |||
|---|---|---|---|---|---|---|
| BE03.20-P-1001-02J | Crankshaft journal Ø | Nominal Ø | mm | 63, 945...63, 965 | 63, 945...63, 965 | |
| Repair stage 1 | Blue (B) | mm | 63, 961...63, 965 | 63, 961...63, 965 | ||
| Repair stage 2 | Yellow (G) | mm | 63, 957...63, 961 | 63, 957...63, 961 | ||
| Repair stage 3 | Red (R) | mm | 63, 953...63, 957 | 63, 953...63, 957 | ||
| Repair stage 4 | White (W) | mm | 63, 949...63, 953 | 63, 949...63, 953 | ||
| Repair stage 5 | Violet (V) | mm | 63, 945...63, 949 | 63, 945...63, 949 | ||
CHECK VALUES OF CRANKSHAFT
| Number | Designation | Engine 178 | |||
|---|---|---|---|---|---|
| BE03.20-P-1001-02J | Crankshaft journal Ø | Nominal Ø | mm | 63, 945...63, 965 | |
| Repair stage 1 | Blue (B) | mm | 63, 961...63, 965 | ||
| Repair stage 2 | Yellow (G) | mm | 63, 957...63, 961 | ||
| Repair stage 3 | Red (R) | mm | 63, 953...63, 957 | ||
| Repair stage 4 | White (W) | mm | 63, 949...63, 953 | ||
| Repair stage 5 | Violet (V) | mm | 63, 945...63, 949 | ||
CHECK VALUES OF CRANKSHAFT
| Number | Designation | Engine 176 | Engine 177 | |
|---|---|---|---|---|
| BE03.20-P-1003-02J | Connecting rod bearing journal Ø | mm | 51, 945...51, 965 | 51, 945...51, 965 |
CHECK VALUES OF CRANKSHAFT
| Number | Designation | Engine 178 | |
|---|---|---|---|
| BE03.20-P-1003-02J | Connecting rod bearing journal Ø | mm | 51, 945...51, 965 |
CRANKSHAFT
| Number | Designation | Engine 176 | Engine 177 | |||
|---|---|---|---|---|---|---|
| BA03.20-P-1002-01N | Bolt, crankshaft bearing cap to crankcase | M9 | Stage 1 | Nm | 25 | 25 |
| Stage 2 | ∠° | 90 | 90 | |||
| M10 | Stage 1 | Nm | 5 | 5 | ||
| Stage 2 | Nm | 35 | 35 | |||
| Stage 3 | ∠° | 90 | 90 | |||
CRANKSHAFT
| Number | Designation | Engine 178 | |||
|---|---|---|---|---|---|
| BA03.20-P-1002-01N | Bolt, crankshaft bearing cap to crankcase | M9 | Stage 1 | Nm | 25 |
| Stage 2 | ∠° | 90 | |||
| M10 | Stage 1 | Nm | 5 | ||
| Stage 2 | Nm | 35 | |||
| Stage 3 | ∠° | 90 | |||
- Check all bearing points of the crankshaft (6) for traces of wear, cross scores, notches, blue coloration and damage.
If damage is present:
↓
Replace the crankshaft (6).
- Check contact surfaces of the crankshafts bearing shells (5) and thrust surfaces of the thrust plates (8) on the crankcase for traces of wear and damage.
If damage is present: I
↓
Replace crankshaft and crankcase (6).
- Check the mounting surfaces of the crankshaft bearing shells (4) on the crankshaft bearing caps (1) for traces of wear and damage.
↓
If damage is present:
Replace crankshaft and crankcase (6).
- Inspect the contact surfaces of the crankshaft bearing shells (4) and thrust surfaces of the thrust plates (7) on the crankshaft main bearing cap (2) for signs of wear and damage.
If damage is present: I
↓
Replace crankshaft and crankcase (6).
- Measure the basic bore width on the crankshaft main bearing cap (2).
If measured value lies outside of tolerance,
↓
Replace crankshaft and crankcase (6).
- Measure the diameter on the crankshaft pins.
Commercially available devices/tools
Outside micrometer
If the measured value lies outside the tolerance range specified in the "Crankcase check values" table,
↓
Replace the crankshaft (6).
- measure the diameter of the connecting rod journals.
Outside micrometer
If the measured value lies outside the tolerance range specified in the "Crankcase check values" table,
↓
Replace the crankshaft (6).
- Install crankshaft bearing caps (1) without crankshaft bearing shells (4, 5).
- Install the fitted bearing caps (2) without crankcase bearing shells (4, 5) and without thrust plates (7, 8).
- Measure basic bore diameter with a
dial indicator and a rapid measuring gauge for inner measurements in the direction A, B and C in two planes (roundness).
A quick caliper for interior measurements
If the measured values lie outside the tolerance,
↓
Replace crankshaft and crankcase (6).
- Remove crankshaft bearing caps (1) and crankshaft main bearing caps (2).