ar0140b9133c

Machine crankcase contact surface

Tyyppi ar · aihe 01.40 · versio 0101 · 2019-07-03

Koskee: 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

Ei saatavilla kielellä ”fi”; näytetään kielellä Englanti.

Sijainti

Toimintoryhmä 1 Moottori › 01 Moottori (kokonaisuus), moottorin huohotus, sylinterinkansi, sylinteriryhmä › 01.40 Sylinteriryhmä, jakopäänkotelon kansi, päätykansi — Mallisarja 368 · Mallisarja 382 · Mallisarja 384 · Mallisarja 634 · Mallisarja 685 · Mallisarja 693 · Mallisarja 694 · Mallisarja 695 · Mallisarja 958 · Mallisarja 979

EinPAS 15 Moottori › 15.15 Polttomoottori täydellinen/moottorikotelo/kampikoneisto › 15.15.31 Sylinteriryhmä/öljynerotin/huohotus — Mallisarja 368 · Mallisarja 382 · Mallisarja 384 · Mallisarja 634 · Mallisarja 685 · Mallisarja 693 · Mallisarja 694 · Mallisarja 695 · Mallisarja 958 · Mallisarja 979

Koskee myös moottoreita/vaihteistoja: 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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