AR03.20-A-4355A | Measure crankshaft and remount in bearings | 11.12.08 |
ENGINE 457.939 /945 /946 /949 in MODEL NAB372.124
ENGINE 457.939 /945 in MODEL NAB372.317
A03.20-0015-09
1 Crankshaft
D Main bearing journal width
E Connecting rod bearing journal width
J Fitted bearing shell width
A Main bearing journal dia.
B Connecting rod bearing journal dia.
C Fitted bearing journal width
A03.20-0016-09
1 Crankshaft
G Spherical shape
H Main bearing inner dia.
F Fillet radii
| Removing | ||
1 | Remove crankshaft (1) | ||
| Checking | ||
2 | Clean crankshaft (1) | ||
3 | Inspect race on crankshaft (1) for wear | If no race is installed or if race is showing signs of wear, the race must be replaced: | |
Remove/install race on the crankshaft | |||
4 | Inspect crankshaft (1) for damage and cracks | Inspect main and connecting rod bearing journals in particular. Replace crankshaft if there is any damage or cracks. | |
5 | Inspect hardness of main and connecting rod bearing journals | The bearing journal to be tested must be placed on a base for the test. The hardness value must be achieved over at least two thirds of the bearing journal circumference; replace crankshaft (1) if necessary. | |
| |||
6 | Check deviation in crankshaft (1) concentricity | Measure at middle main bearing journal, mounted on outer main bearing journals. Replace crankshaft (1) if the permissible values are not reached. | |
| |||
7 | Inspect main and connecting rod bearing journals | Measure diameter of main and connecting rod bearing journals at two points (offset approx. 90°). | |
Main bearing journal diameter (A) | |||
Connecting rod bearing journal dia. (B) | |||
Maximum out-of-roundness and conicity | |||
Micrometer | |||
Micrometer | |||
Measure width of bearing journals. | |||
Fitted bearing journal width (C) | |||
Main bearing journal width (D) | |||
Connecting rod bearing journal width (E) | |||
Measure fillet radius (F) and spherical shape of piston ring (G) of main and connecting rod journal. | |||
Fillet radii (F) | |||
Spherical shape (G) | |||
Machine crankshaft (1) if permissible values are not maintained: | |||
Machine crankshaft | |||
8 | Mount crankshaft (1) radially in bearings | ||
9 | Mount crankshaft (1) axially | ||
| Install | ||
10 | Install crankshaft (1) |
Check values for a crankshaft
Number | Designation | Engine | Engine | ||
BE03.20-N-1001-02J | Connecting rod bearing journal dia. | Normal | mm | 89.980 to 90.000 | 89.980 to 90.000 |
Standard I | mm | 89.880 to 89.900 | 89.880 to 89.900 | ||
Repair size I | mm | 89.730 to 89.750 | 89.730 to 89.750 | ||
Repair size II | mm | 89.480 to 89.500 | 89.480 to 89.500 | ||
Repair size III | mm | 89.230 to 89.250 | 89.230 to 89.250 | ||
Repair size IV | mm | 88.980 to 89.000 | 88.980 to 89.000 | ||
BE03.20-N-1002-02J | Connecting rod bearing journal width | mm | 46.0 to 46.1 | 46.0 to 46.1 | |
BE03.20-N-1003-02J | Hardness of main bearing and connecting rod bearing journals (Rockwell hardness) | HRC | 53 to 59 | 53 to 59 | |
BE03.20-N-1004-02J | Main bearing journal dia. | Normal | mm | 103.980 to 104.000 | 103.980 to 104.000 |
Standard I | mm | 103.880 to 103.900 | 103.880 to 103.900 | ||
Repair size I | mm | 103.730 to 103.750 | 103.730 to 103.750 | ||
Repair size II | mm | 103.480 to 103.500 | 103.480 to 103.500 | ||
Repair size III | mm | 103.230 to 103.250 | 103.230 to 103.250 | ||
Repair size IV | mm | 102.980 to 103.000 | 102.980 to 103.000 | ||
BE03.20-N-1005-02J | Fitted bearing journal width | Normal | mm | 46.000 to 46.062 | 46.000 to 46.062 |
Repair size I | mm | 46.500 to 46.562 | 46.500 to 46.562 | ||
Repair size II | mm | 47.000 to 47.062 | 47.000 to 47.062 | ||
BE03.20-N-1006-02J | Main bearing journal width | mm | 46.000 to 46.250 | 46.000 to 46.250 | |
BE03.20-N-1008-02J | Concentricity deviation measured at middle main bearing journal | mm | 0.09 | 0.09 | |
BE03.20-N-1009-02J | Fillet radii | Main bearing journals | mm | 4.2 to 4.5 | 4.2 to 4.5 |
Connecting rod bearing journals | mm | 4.2 to 4.5 | 4.2 to 4.5 | ||
BE03.20-N-1010-02J | Spherical shape | Main bearing journals | mm | 0.000...0.004 | 0.000...0.004 |
Connecting rod bearing journals | mm | 0.000...0.004 | 0.000...0.004 | ||
BE03.20-N-1011-02J | Out-of-roundness and taper, main and connecting rod bearing journals | Limit value for reuse | mm | 0.02 | 0.02 |
Replacing or machining crankshaft | mm | 0.01 | 0.01 | ||
Check values for a crankshaft
Number | Designation | Engine | ||
BE03.20-N-1001-02J | Connecting rod bearing journal dia. | Normal | mm | 89.980 to 90.000 |
Standard I | mm | 89.880 to 89.900 | ||
Repair size I | mm | 89.730 to 89.750 | ||
Repair size II | mm | 89.480 to 89.500 | ||
Repair size III | mm | 89.230 to 89.250 | ||
Repair size IV | mm | 88.980 to 89.000 | ||
BE03.20-N-1002-02J | Connecting rod bearing journal width | mm | 46.0 to 46.1 | |
BE03.20-N-1003-02J | Hardness of main bearing and connecting rod bearing journals (Rockwell hardness) | HRC | 53 to 59 | |
BE03.20-N-1004-02J | Main bearing journal dia. | Normal | mm | 103.980 to 104.000 |
Standard I | mm | 103.880 to 103.900 | ||
Repair size I | mm | 103.730 to 103.750 | ||
Repair size II | mm | 103.480 to 103.500 | ||
Repair size III | mm | 103.230 to 103.250 | ||
Repair size IV | mm | 102.980 to 103.000 | ||
BE03.20-N-1005-02J | Fitted bearing journal width | Normal | mm | 46.000 to 46.062 |
Repair size I | mm | 46.500 to 46.562 | ||
Repair size II | mm | 47.000 to 47.062 | ||
BE03.20-N-1006-02J | Main bearing journal width | mm | 46.000 to 46.250 | |
BE03.20-N-1007-02J | Main bearing inside dia. | Normal | mm | 104.060 to 104.106 |
Standard I | mm | 103.960 to 104.006 | ||
Repair size I | mm | 103.810 to 103.856 | ||
Repair size II | mm | 103.560 to 103.606 | ||
Repair size III | mm | 103.310 to 103.356 | ||
Repair size IV | mm | 103.060 to 103.106 | ||
BE03.20-N-1008-02J | Concentricity deviation measured at middle main bearing journal | mm | 0.09 | |
BE03.20-N-1009-02J | Fillet radii | Main bearing journals | mm | 4.2 to 4.5 |
Connecting rod bearing journals | mm | 4.2 to 4.5 | ||
BE03.20-N-1010-02J | Spherical shape | Main bearing journals | mm | 0.000...0.004 |
Connecting rod bearing journals | mm | 0.000...0.004 | ||
BE03.20-N-1011-02J | Out-of-roundness and taper, main and connecting rod bearing journals | Limit value for reuse | mm | 0.02 |
Replacing or machining crankshaft | mm | 0.01 | ||
BE03.20-N-1012-02J | Axial play | mm | 0.230 to 0.370 | |
BE03.20-N-1013-02J | Radial play | mm | 0.060 to 0.126 | |
BE03.20-N-1014-02J | Fitted bearing shell width | Normal | mm | 45.74 to 45.81 |
Repair size I | mm | 46.21 to 46.31 | ||
Repair size II | mm | 46.71 to 46.81 | ||
BE03.20-N-1015-02J | Peak-to-valley height of journals | (Rt) | mm | 0.0015 |
BE03.20-N-1016-02J | Permissible imbalance of crankshaft | at 400 rpm-1 | Ncm | 0.6 |
BE03.20-N-1017-02J | Bolt, counterweight to crankshaft | Shank length (L) when new | mm | 69.95 to 70.00 |
permissible shank length (L) | mm | 71.20 | ||
BE03.20-N-1018-02J | Bolt connecting crankshaft bearing cap to crankcase | Shank length (L) when new | mm | - |
permissible shank length (L) | mm | - | ||
363 589 02 21 00
Dial indicator holder
Hardness tester
000 589 20 21 00
Referenced documents
- ar0320a2570a Remove/install race on the crankshaft
- ar0320a4351a Remove/install crankshaft
- ar0320a435501a Mount crankshaft radially in bearings
- ar0320a435502a Mount crankshaft axially
- ar0320a4465a Machine crankshaft