ar0140b9133c

Machine crankcase contact surface

Type ar · emne 01.40 · version 0101 · 2019-07-03

Gælder for: Engine 924.9, 926.9 in model 368, 382, 384, 634, 685, 979 Engine 924.9, 926.9 in model 693, 694, 695 Engine 924.9, 926.9 in model 958, 979 Engine 926.9 in model 958

Ikke tilgængelig på “da”; vises på Engelsk.

Placering

Funktionsgruppe 1 Motor › 01 Motor komplet, motorudluftning, topstykke, motorblok › 01.40 Motorblok, takthusdæksel, endedæksel — Serie 368 · Serie 382 · Serie 384 · Serie 634 · Serie 685 · Serie 693 · Serie 694 · Serie 695 · Serie 958 · Serie 979

EinPAS 15 Motor › 15.15 forbrændingsmotor komplet/motorblok/krumtapdrev › 15.15.31 motorblok/olieudskiller/udluftning — Serie 368 · Serie 382 · Serie 384 · Serie 634 · Serie 685 · Serie 693 · Serie 694 · Serie 695 · Serie 958 · Serie 979

Gælder også for motorer/gearkasser: 924 9**, 926 9**

AR01.40-B-9133C

Machine crankcase contact surface

19.06.2019

Engine	924.9, 926.9 in model 368, 382, 384, 634, 685, 979
Engine	924.9, 926.9 in model 693, 694, 695
Engine	924.9, 926.9 in model 958, 979
Engine	926.9 in model 958

Machine crankcase contact surface

1	Engine block

A	Block height
a	Chamfer on cylinder top edge

B01.40-0002-06

	Machining
1	Grind the upper side of the tread block (1)		AR03.10-B-7021-02D
		 Observe that after the grind on the supper side, the block height (A) must meet the tolerance degree of the cylinder's diameter (normal, repair I, repair I or repair II).
		 The cylinder's diameter and block height must correspond to the tolerance degree of the cylinder's diameter and piston height to be applied.
2	Verify the setting data of the grinding machine	 The rotation (n) is determined by the diameter (d) of the grinding wheel.
		Height (A) of the block, measured between the main bearings (upper shell seat) and the block's top face	*BE01.40-B-1006-02C
		Roughness of the block's upper surface	*BE01.40-B-1011-02C
		Maximum admissible deviation of the flatness at the engine block surface	*BE01.40-B-1013-02C
		Parallelism deviation between the block upper face with regard to the upper shells seats in the main bearings	*BE01.40-B-1016-02C
3	Machine the chamfer (a) on the cylinder top edge	 To facilitate the later piston installation.
		Chamfer (a) at the upper corner of the cylinder or cylinder liner	*BE01.40-B-1021-02C

Engine block test values

Number	Designation			Engine 924.9, 926.9
BE01.40-B-1006-02C	Height (A) of the block, measured between the main bearings (upper shell seat) and the block's top face	Normal	mm	298,33...298,40
		Repair I (- 0,3)	mm	298,03...298,10
		Repair II (- 0,6)	mm	297,73...297,80
		Repair III (- 0,9)	mm	297,43...297,50

Engine block test values

Number	Designation			Engine 924.9, 926.9
BE01.40-B-1011-02C	Roughness of the block's upper surface	Rz	mm	0,008...0,016

Engine block test values

Number	Designation			Engine 924.9, 926.9
BE01.40-B-1013-02C	Maximum admissible deviation of the flatness at the engine block surface	On the total length	mm	0,030
		on a 150 mm length	mm	0,015

Engine block test values

Number	Designation			Engine 924.9, 926.9
BE01.40-B-1016-02C	Parallelism deviation between the block upper face with regard to the upper shells seats in the main bearings	maximum	mm	0,05

Engine block test values

Number	Designation			Engine 924.9, 926.9
BE01.40-B-1021-02C	Chamfer (a) at the upper corner of the cylinder or cylinder liner	a1	mm	0,3...0,4
		a2	graus	30

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