Bosch 5302 Technical Information download pdf (Page 17)

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Workshop Manual_3 - 4 LD_cod. ED0053025560_4° ed_ rev. 03

Disassembly / Reassembly

Flywheel

Clockwise unscrew nut 1 and remove the ywheel using

the puller 2 Part. no. 7271-3595-050 for 3LD 450, 3LD 451/S,

3LD510, 3LD510/S, while for 4LD 640, 4 LD 705, 4LD 820 use

puller with Part. no. 7271-3595-048.

Check that the starter ring gear, when it is present, and the co-

nic surface of the driving shaft coupling hole are intact.

While reassembling, tighten the screws 1 at 170 Nm for 3LD

450, 3LD 450/S, 3LD510, 3LD 510/s and at 350 Nm for 4LD

640, 4LD 705, 4LD 820.

Note: The ywheels of the left-hand engines (3LD 451/S, 3LD

510/S) have a blading turned in the opposite direction and

the nut 1 shall be anticlockwise unscrewed.

Vent plug

Components:

1 Vent plug and oil reling

2 O-ring

3 Diaphragm

Starting pulley

In order to carry out any easier staring, it is necessary to place

the driving shaft at the TDC (Top dead center) and to assemble

the pulley with notch 1 moved back at ( 45°) according to the

rotation direction of the engine, as per picture 4 and 5 .

Tighten the screws at 35 Nm for 3LD 450, 3LD 450/S, 3LD510,

3LD 510/S, at 40 Nm for 4LD 640, 4LD 705, 4LD 820.

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Bosch 5302 Technical Information Page 17