2.8.15. Removal and installation of a cranked shaft

Fig. 2.368. Components crankshaftа: 1 – a bolt 9 Нм; 2 – a forward sealing flange; 3 – sealing rings; 4 – a cranked shaft; 5 – the adjusting plug; 6 – a cam-shaft frame; 7 – a bolt; 8 – the extended bolt, a long carving site; 9 – the truncated bolt, a short carving site; 10 – an adjusting washer; 11 – the bearing loose leaf; 12 – an aligning washer; 13 – an adjusting washer; 14 – the bearing loose leaf; 15 – a sealing ring; 16 – the block of cylinders

THE NOTE For performance of adjusting works fix the engine on a clamp for the engine and a check point.

THE NOTE On cars with АКПП the conducted disk of coupling is fastened to a cranked shaft with an aligning washer.

Clear landing surfaces; on them there should not be an oil and greasings neither from above, nor from below.

Fig. 2.369. Hermetic packing on landing surfaces of a frame of a cam-shaft

Put hermetic platens on pure landing surfaces of a frame of a cam-shaft, as is shown in drawing 2.369.

The flute of a landing surface should be filled by hermetic.

Hermetic platens should act over a landing surface on 1,5–2,0 mm.

Establish sealing rings 1–3.

Check up, whether centering plugs 4–7 on the places in a cam-shaft frame, as is shown in drawing 2.369 are established.

Fig. 2.370. Bolts of fastening of a frame of a cam-shaft

Establish a cam-shaft frame (fig. 2.370).

Replace bolts 1–16.

Establish long bolts of an internal number of a frame of a cam-shaft.

Twirl bolts of a frame of a cam-shaft as follows:

1. Tighten bolts 1–16 torque a key with the moment of an inhaling 50 Нм;

2. To tighten bolts 1–16 usual key on 90 (1/4 about.);

3. Bolts of landing surfaces of the block of cylinders / of a frame of a cam-shaft – in drawing are represented dark – to tighten cross-wise with the moment 23 Нм.

Fig. 2.371. Loose leaves of bearings

At factory in the block of cylinders loose leaves of bearings of a correct thickness (fig. 2.371) are established.

For marks of a thickness of loose leaves of bearings colour points on the bearing loose leaf serve.

The accessory of loose leaves of bearings to the block of cylinders is noted near to the corresponding bearing the letter.

Up to engines with numbers AUK 028 000 and BKH 033 000:

On engines with numbers to AUK 028 000 and BKH to 033 000 colour marks of the loose leaf of the bearing of 1 (forward) there correspond other letter designations on a cam-shaft frame.

Fig. 2.372. Marks of loose leaves of bearings

At factory in a cam-shaft frame loose leaves of bearings of a correct thickness are established. For marks of a thickness of loose leaves of bearings colour points on the bearing loose leaf serve.

The accessory of loose leaves of bearings to a cam-shaft frame is noted on a flywheel flange crankshaftа by a number of letters. For the bearing 1 among, the first letter is intended for the bearing 2 – the second etc.

On engines with numbers to AUK 028 000 and BKH to 033 000 colour marks of the loose leaf of the bearing of 1 (forward) there correspond other letter designations on crankshaftу.

Fig. 2.373. Check of axial displacement

Tighten the indicator of hour type by means of a universal arm to ГБЦ and put it to a cheek of a cranked shaft.

Press crankshaft by hand to a micrometer, establish a micrometer on 0.

Wring out crankshaft from a micrometer and consider its indications.

Axial displacement: 0,209–0,251 mm.

It is necessary to replace loose leaves of bearings at deterioration to a nickel layer.

THE NOTE Maintained bearings in places do not change.

Remove a frame of a cam-shaft and clear radical necks.

Put thread Plastigage according to width of the bearing on a neck and in loose leaves of bearings.

Thread Plastigage should lay down in the middle of the bearing loose leaf.

Put a frame of cam-shafts and fasten with the moment 30 Нм. Коленвал do not turn.

Again remove a frame of cam-shafts.

Compare width of thread Plastigage to a scale.

Radial palpation: 0,010–0,039 mm.

The limiting admission of radial palpation: 0,08 mm.