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Workshop Manual__3 - 4 LD_cod. ED0053025560_
4° ed
_ rev.
03
Disassembly / Reassembly
Drive shaft
There are two types of standard drive shafts:
A
Automotive type (agricultural machines)
B
industrial type (motor pumps generating set, etc.)
Note:
For left-handed engines, i.e 3LD 510/S, the drive shaft
turns anticlockwise (seen from the flywheel position) and
their thread is clockwise on the power takeoff side as well
as on the flywheel side.
Drive shaft lubrication ducts
Caution – Warning
Always wear protective goggles if compressed air is used.
Remove the caps, clean the ducts
A
and
B
with a point and
blow them with compressed air.
Replace the caps by caulking them on their seat, then check
their seal.
Drive shaft connecting radius
R
= 3 mm
R
1
= 3.5 mm
Note:
When the main journal and the crank are ground,
it is
essential to reset
R
and
R
1
values in order to avoid any
possible breaking of the drive shaft.
Drive shaft main journal and crank diametres (mm)
3LD 450, 3LD 510, 3LD 451/S, 3LD 510/S
A
= 39.990 ÷ 40.000
B
= 41.987 ÷ 42.000
C
= 41.990 ÷ 42.000
D
= 29.990 ÷ 30.000
4LD 640, 4LD 705, 4LD 820
A
= 44.900 ÷ 45.000
B
= 55.340 ÷ 55.353
C
= 44.900 ÷ 45.000
D
= 29.990 ÷ 30.000
Содержание 3LD 450
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