AR03.20-T-4465BB | Machine crankshaft | 12.12.08 |
ENGINE 457.944 in MODEL NMB613.358 /367 /388
ENGINE 457.942 in MODEL NMB671.015 /020 /021 /030 /042 /332 /333
A03.20-0017-06
1 Crankshaft
2 Counterweight
3 Bolt
4 Crankshaft sprocket
5 Dowel pin
A Main bearing journal dia.
B Connecting rod bearing journal dia.
C Fitted bearing journal width
D Main bearing journal width
E Connecting rod bearing journal width
F Fillet radii
G Spherical shape
L Shank length
| Removing | ||
1 | Remove crankshaft (1) | For model 613.358/388, model 671 | |
in case of model 613.367 | |||
Machining | |||
2 | Inspect crankshaft (1) for damage and cracks | Inspect main and connecting rod bearing journals in particular. If damage or cracks are present: | |
Replace crankshaft (1). | |||
3 | Measure crankshaft (1) | Check journals and establish repair stages for machining. If the permissible dimensions for machining is not achieved: | |
Replace crankshaft (1). | |||
4 | Take off crankshaft sprocket (4) | Carefully loosen crankshaft gear if necessary using a plastic mallet. | |
5 | Remove counterweights (2) | Mark counterweights relative to matching position on crankshaft. | |
6 | Machine main bearing journal | All main bearing journals must have the same repair size. Depending on repair size of the main bearing journals (A), width (C) of the fitted bearing journal must have a matching repair size: (A) Normal, Normal I (C) Normal (A) Rep. stage I or II (C) Rep. stage I (A) Rep. stage III or IV (C) Rep. stage II | |
Main bearing journal diameter (A) | |||
Fitted bearing journal width (C) | |||
Main bearing journal width (D) | |||
Fillet radii (F) | |||
Spherical shape (G) | |||
Out-of-roundness and taper | |||
Peak-to-valley height of journals | |||
7 | Machine connecting rod bearing journals | All connecting rod bearing journals must have the same repair size. | |
Connecting rod bearing journal dia. (B) | |||
Connecting rod bearing journal width (E) | |||
Fillet radii (F) | |||
Spherical shape (G) | |||
Out-of-roundness and taper | |||
Peak-to-valley height of journals | |||
| Cleaning | ||
8 | Deburr oil holes on the journal and crankshaft | Wash crankshaft with diesel fuel and clean holes with a round brush. | |
| Check | ||
9 | 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 must be achieved over at least two thirds of the circumference of the bearing journal, if necessary: Replace crankshaft (1). | |
| |||
10 | Check shank length (L) of bolts (3). | If permissible shank length (L) of bolts (3) is exceeded, replace them. | |
11 | Attach counterweights (2) | Observed markings for installation position. Lightly oil the bolts (3) on thread and on contact surface of screw head. | |
| |||
12 | Inspect imbalance of crankshaft | Check crankshaft without flywheel. | |
13 | Replace dowel pin (5) and attach crankshaft gear (4) | ||
| Install | ||
14 | Install crankshaft (1) | For model 613.358/388, model 671 | |
in case of model 613.367 |
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-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-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 | ||
Crankshaft
Number | Designation | Engine 457.942/ | ||
BA03.20-N-1001-01E | Bolt, counterweight to crankshaft | Stage 1 | Nm | 140 |
Stage 2 | Nm | - | ||
Stage 3 | ° | 90 | ||
Hardness tester
000 589 20 21 00