AR03.20-T-4465B | Machine crankshaft | 19.7.00 |
ENGINE 441.980 in MODEL 613.355 /364 /365
ENGINES 402.970, 446.938 in MODEL 613.455 /485
W03.10-0033-01
T03.20-0005-01
T03.20-0007-01
Diameter of bearing journal
Arrow Centering hole
Inspection of hardness of bearing journals
| Remove | ||
1 | Remove crankshaft | ||
| Disassemble | ||
2 | Take off counterweights of crankshaft | ||
3 | Clean crankshaft | ||
| Inspect | ||
4 | Inspect crankshaft | ||
5 | Define repair size | Maintain specifications in the table -Machine all main bearing journals to the same oversize. -Machine all conrod bearing journals to the same oversize. -Oversizes of conrod bearing journals and main bearing journals may differ. | |
Crankshaft bearing journals | |||
Conrod bearing journals | |||
6 | Re-center crankshaft | Crankshaft is mounted at the first and at the last main bearing journal. | |
7 | Grind crankshaft | Always re-grind all bearing points to the next oversize. | |
It is essential to maintain the fillet radii at the bearing journals. | |||
8 | Grind contact surfaces for fit bearings | The width of the fit bearing varies according to the repair size of the main bearing journals, and should be compensated by machining the contact surfaces of the crankshaft. | |
9 | Lap bearing journals | Maintain specified peak-to-valley height. | |
10 | Inspect dimensional tolerance of bearing journals | ||
11 | Inspect hardness of bearing journals | Re-harden crankshaft, if necessary. | |
12 | Clean oil galleries | Carefully clean oil galleries with a wire brush and blow out with compressed air before installing. | |
| Assemble | ||
13 | Fit on counterweights |
Inspection and setting data of crankshaft
Number | Designation | Engine 402.970 | Engine 441.980 | Engine 446.938 | ||
BE03.20-N-1001-02I | Diameter of crankshaft bearing | Normal | mm | 103,98...104,00 | 103,98...104,00 | 103,98...104,00 |
Standard I | mm | 103,88...103,90 | 103,88...103,90 | 103,88...103,90 | ||
Repair size I | mm | 103,73...103,75 | 103,73...103,75 | 103,73...103,75 | ||
Repair size II | mm | 103,48...103,50 | 103,48...103,50 | 103,48...103,50 | ||
Repair size III | mm | 102,98...103,00 | 103,23...103,25 | 103,23...103,25 | ||
.Repair size IV | mm | - | 102,98...103,00 | 102,98...103,00 | ||
BE03.20-N-1002-02I | Diameter of conrod | Normal | mm | 89,98...90,00 | 89,98...90,00 | 89,98...90,00 |
Standard I | mm | 89,88...89,90 | 89,88...89,90 | 89,88...89,90 | ||
Repair size I | mm | 89,73...89,75 | 89,73...89,75 | 89,73...89,75 | ||
Repair size II | mm | 89,48...89,50 | 89,48...89,50 | 89,48...89,50 | ||
Repair size III | mm | 88,98...89,00 | 89,23...89,25 | 89,23...89,25 | ||
.Repair size IV | mm | - | 88,98...89,00 | 88,98...89,00 | ||
BE03.20-N-1005-02I | Hardness of crankshaft journals | over two thirds of circumference | HRC | 46 | - | - |
total | HR. | 53 (3) | 56 (3) | 56 (3) | ||
363 589 02 21 00
Hardness tester
Dial gage holder
Dial gage
001 589 53 21 00
000 589 20 21 00
Commercially available tools