25
COMPILER TECO/ATI ENDORSEDDATE
23.06.2003
REG. CODE
1-5302-607
MODEL N°
50889
DATE OF ISSUE
06-03
REVISION 00
X
32
33
34
35
Ø 11,977 - 11,993
Ø 27,959 - 27,980 Ø 18,9 - 19,0
3,45 - 3,55
Ø 9,986 - 9,996
38,9 - 39,1
0,07 ÷ 0,041
0,10
0,02 ÷ 0,059
0,10
0,05 ÷ 0,098
0,120
A
B
C
29,72 ÷ 29,77
40,551 ÷ 40,576
17,92 ÷ 17,94
29,65
40,45
17,89
25LD330-2 161,6 - 162,2
25LD425-2 180,1- 180,7
CHECKS AND OVERHAUL
Tappets and push rods
Make sure that the tappet surfaces (fig.32) are free from wear and
present no signs of scoring or seizure, otherwise, renew.
Assembly clearance between tappets and their housings should
be:
The push rods must be straight and with the spherical surfaces at
either end in good condition (fig.32).
Make sure that the lubrication holes inside the tappets and push
rods are free of dirt.
Injection pump plug nuts and control rods
Renew the parts if the surface wear is greater than 0.10mm
(fig.33).
Assembly clearance between control rods and their housings in the
crankcase:
Fuel pump push-rod
Check that the surfaces of the fuel pump push-rod, fig. 34, are free
of wear, scoring, or signs of seizure, otherwise, renew.
Assembly clearance between fuel pump push-rod and its housing
in the crankcase:
Oil pump
Check the rotors and renew them if they have worn lobes or centres.
Check the extent of pump wear by taking the measurements
indicated in figure 35.
Fitting mm Max. wear mm
Fitting mm Max. wear mm
Fitting mm Max. wear mm
Max. wear mmMeasurement Dimensions mm
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