Test specifications for crankshaft
Número | Denominação | Engine 904.9 | Engine 902.9; 906.9, 924.9, 926.9 | |||
BE03.20-B-1001-02C | Diameter of the main neck | Normal | mm | 85.990...86.010 | 85.990...86.010 | |
Normal I | mm | 85.890...85.910 | 85.890...85.910 | |||
Repair I | mm | 85.740...85.760 | 85.740...85.760 | |||
repair II | mm | 85.490...85.510 | 85.490...85.510 | |||
repair III | mm | 85.240...85.260 | 85.240...85.260 | |||
repair IV | mm | 84.990...85.010 | 84.990...85.010 | |||
BE03.20-B-1007-02C | Internal diameter of sleeves of the main necks (assembled) | Normal | mm | 86.066...86.108 | 86.066...86.108 | |
Normal I | mm | 85.966...86.008 | 85.966...86.008 | |||
Repair I | mm | 85.816...85.858 | 85.816...85.858 | |||
repair II | mm | 85.566...85.608 | 85.566...85.608 | |||
repair III | mm | 85.316...85.358 | 85.316...85.358 | |||
repair IV | mm | 85.066...85.108 | 85.066...85.108 | |||
Crankcase, timing case cover, end cover
Número | Denominação | Engine 900.9, 902.9, 904.9; 906.9 | |||
BA01.40-B-1001-01B | Main bearing cap bolts to engine block | 1st stage | Nm | 30 | |
2nd stage | Nm | 80 | |||
3rd stage | Nm | 155 | |||
4th stage | Degrees | 90° | |||
001 589 53 21 00
Dial indicator
W03.20-0040-01
1 Clean the crankshaft bearings with suede.
2 Measure the diameter of the main bearing journal (D) with a micrometerat two points (far approx. 90° from each other). The assemblage degree measures indicated in the table must be followed.If one of the measures is out of the tolerance range, machine the crankshaft.
W03.20-0041-01
3 Clean the connecting rod bearing seats, the bearing caps and the connecting rod journals with suede.
4 Position the crankshaft shells (2)according to the sequence marked inside the engine block. The safety salience (arrow) of the crankshaft shells (2)must fit in the engine block groove. The oil holes of the crankshaft shells (2) and those of the engine block must coincide.
5 Position the crankshaft shells (1)in the sequence marked in the bearing caps (3, 4). The safety flap (arrow) of the crankshaft shell (1)must fit in the main bearing caps groove (3, 4).
W03.20-0004-01
In the engine 904.9
6.1 Install the main bearing caps (3, 4) in the engine block and tighten the bolts of the main bearing cap (6) at the prescribed torque. All the main bearing caps (3, 4) in the engine block are laterally displaced from the center and marked with numbers (arrows).They must be installed according to their numbers, starting from the front of the engine block in crescent order and they can not be swapped.
W03.20-1004-10
In the engine 906.9
6.2 Install the main bearing caps (3, 4) in the engine block and tighten the bolts of the main bearing cap (6) up to the prescribed torque. All the main bearing caps (3, 4) in the engine block are laterally displaced from the center and marked with numbers (arrows). They must be installed according to their numbers, starting from the front of the engine block in crescent order and they can not be swamped.
W03.20-0005-01
7 Adjust the dial gauge and the feeler with the micrometerup to the nominal measure of the bearing's diameter (pre-load of 5 mm).
8 Measure the crankshaft's bearings lodgings in the engine block with the dial gauge and feeler at three points (A, B, C) (vertically and at the point 30° far from the separation points).
The measures indicated in the table must be adopted.If one of the measured values (A, B, C) is not within the tolerance limits, replace the bearings of the fixed shells as per the diameters measured in the bearing.The main bearing trays are supplied by the factory ready for the inserts, as well as with oversizes. Reworks are not permitted.
9 Disassemble again the main bearing cover (3, 4).