AR01.40-B-9271TA | Widen cylinder bore in crankcase | 12.02.16 |
Cumbustion engine 904.9, 906.9 with Vehicle 958
I01.40-0002-06
Represented in the engine 904.9
1 Engine block
A Engine block height
B Drilling diameter (for the cylinder sleeve in the engine block)
C Drilling diameter (for the cylinder sleeve collar in the engine block)
D Distance (between the cylinder sleeve collar seat and the division surface of the crankshaft bearing cover)
E Transition radius (from the collar diameter to the cylinder sleeve collar seat in the engine block)
F Phase (in the cylinder sleeve collar seat for the cylinder drilling)
| Remove | ||
1 | Remove the drive shaft | ||
2 | Remove the camshaft | ||
3 | Remove the oil injector nozzles | ||
4 | Remove the oil / water heat exchanger | Engine 904.9 | |
Engine 906.9 | |||
5 | Remove and clean the oil filter housing | ||
6 | Remove the compressor | Engine 904.9 Engine 906.9 | |
Engine 906.9 | |||
Machine | |||
7 | Prepare and attach the engine block (1) in the drilling bench | ||
8 | Adjust the cylinder face to the drilling bench | With the centralizing device above the upper dead point of the piston 1st ring. | |
9 | Lengthen the drilling tool | ||
10 | Drill the cylinder in several working operations | Up to a drilling diameter (B), from approximately 0.05 mm smaller than the drilling diameter (B) prescribed. | |
When drilling several cylinder sleeves, two adjacent cylinders sleeves can not be successively drilled, because the thermal load is very high. | |||
Maximum advance for the accuracy driller boring machine: Rotation: 250 to 280 rpm Advance: 0.04 to 0.06 mm/revolution | |||
11 | Grinding the prescribed drilling diameter in the cylinder (B) | Adjustment value in the honing machine: Effective pressure: 2.5 to 3.0 bar Rotation: 60 to 100 rpm Honing angle: 40 to 60° Stroke index: 30 to 40 | |
12 | Check the drilling diameter (B) in the engine block (1) | Drilling diameter for the cylinder sleeve in the engine block | |
Roughness depth | |||
13 | Drill and chamfer the cylinder sleeve collar seat | Use a tool to drill with an intersection angle of 90°. The drilling depth for the cylinder sleeve collar seat results in the prescribed distance (D) between the cylinder sleeve collar seat and the division surface for the crankshaft bearing cover. | |
Distance (D) between the cylinder sleeve collar seat and the division surface of the crankshaft bearing cover | |||
Drilling diameter (C) for the cylinder sleeve in the engine block (1) | |||
Phase (F) in the cylinder sleeve collar seat for the cylinder drilling | |||
14 | Check the dimensional stability for the cylinder sleeve collar seat | Drilling diameter (C) for the cylinder sleeve in the engine block (1) | |
Distance (D) between the cylinder sleeve collar seat and the division surface of the crankshaft bearing cover | |||
Transition radius (E) from the collar diameter to the cylinder sleeve collar seat in the engine block (1) | |||
Phase (F) in the cylinder sleeve collar seat for the cylinder drilling | |||
Concentricity, flatness, roughness of the cylinder sleeve collar support surface in the engine block (1) | |||
Roundness and roughness of the drilling for the cylinder sleeve collar in the engine block (1) | |||
15 | Deburr the engine block with abrasive stone (1) in the input chamfer | ||
16 | Clean the engine block (1) |
Inspection data of crankcase
Número | Denominação | Engine 904.9 and 906.9 | |||
BE01.40-B-1007-02C | Diameter (B) of the seat-hole to the cylinder liner, at the block | mm | 106,000...106,035 | ||
BE01.40-B-1008-02C | Diameter (C) of the seat - hole to the liner collar, in the block | mm | 109,572...109,626 | ||
BE01.40-B-1009-02C | Distance (D) between the seat surface to the liner collar and the main bearing cap support surface | mm | 338,9...339,1 | ||
BE01.40-B-1012-02C | Roughness on the hole seat surface (liner lodging), after polishing | mm | 0,025 | ||
BE01.40-B-1014-02C | Surface finishing of the liner collar seat at the hole - seat | Concentricity | mm | 0,030 | |
Flatness deviation | mm | 0,010 | |||
Roughness | Rz | mm | 0,016 | ||
BE01.40-B-1015-02C | Roughness of the liner collar lodging (C) and eccentricity with regard to the liner lodging (B) | Maximum eccentricity (C with regard to B) | mm | 0,060 | |
Roughness | Rz | mm | 0,025 | ||
BE01.40-B-1018-02C | Radius (E) in the liner collar lodging | maximum | mm | 0,2 | |
BE01.40-B-1019-02C | Chamfer (F) on the seat surface for the liner collar | mm | 0,3...0,4 | ||
degrees | 45 | ||||