- 31 -
Ø 11,977 - 11,993
Ø 9,986 - 9,996
38,9 - 39,1
34
32
33
35
4
A 29,72 ÷ 29,77 29,65
B 40,551 ÷ 40,576 40,45
C 17,92 ÷ 17,94 17,89
0,05 ÷ 0,098 0,120
0,02 ÷ 0,059 0,10
0,07 ÷ 0,041 0,10
KD 425-2 180,1- 180,7
Checks and overhaul
Fitting mm Max. wear mm
Fitting mm Max. wear mm
Fitting mm Max. wear mm
Tappets and push rods
Make sure that the tappet surfaces (g.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 (g.32).
Make sure that the lubrication holes inside the tappets and push
rods are free of dirt.
Max. wear mmMeasurement Dimensions mm
Fuel pump push-rod
Check that the surfaces of the fuel pump push-rod, g. 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 gure 35.
Injection pump plug nuts and control rods
Renew the parts if the surface wear is greater than 0.10mm
(g.33).
Assembly clearance between control rods and their housings in
the crankcase:
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