Lombardini CHD series - Crankshaft and Bearing Checks; Connecting rod alignment; Piston cooling sprayer; Connecting rod;piston assemblies

- 41 - Workshop Manual LDW CHD _ cod. 1.5302.345 - 6° ed_rev. 05
aa
a
aa
°3
1a 1a
1a
1a 1a
°82
D
mm82
A
20,541÷89,441
F
20,841÷89,741
*B
30,82÷20,82
**C
807,35÷986,35
D
000,82÷599,72
E
3,26÷1,26
G
8,56÷6,56
4
68
66
65
69
67
D-B
30,0÷20,0 60,0
Connecting rod alignment
Useasurfaceplateandadialgaugeasshowninthegure65.
Check the alignment of the axes using the wrist pin of the piston;
deviation A = 0.02 mm; limit = 0.05 mm
Moderate warpage may be corrected by gradually working with
a press.
Dimensions
(mm)
Ref.
* With driven and bored bearing.
** Withcapttedandscrewstightenedtoatorqueof70Nm.
Disassembly / Reassembly
Connecting rod/piston assemblies
The three connecting rod/piston assemblies should be tted
back into their original cylinders.
Mark them with references to avoid mistake.
Note: The custom at LOMBARDINI is to consider the cylinder
ontheywheelsideastherstcylinder.
Piston cooling sprayer
This is assembled on turbo engines LDW 2004/T -2204/T.
Blow on it with compressed air and check that there are no
impurities inside.
Reassemble it back into place making sure you maintain axis
alignment A of the spray with respect to axis B shown in the
gure67.
Anywaythecorrectpositionisensuredbythexingscrew.
Dimensions
Ref.
Clearance (mm) Limit value (mm)Ref.