Tappets And Push Rods; Kd 425-2 Workshop Manual_Cod. Ed0053029360_1° Ed_ Rev; Injection Pump Plug Nuts And Control Rods; Fuel Pump Push-Rod - Kohler KD 425-2 Workshop Manual

32
Ø 27,959 - 27,980
33
Ø 9,986 - 9,996
34
35
KD 425-2 Workshop Manual_cod. ED0053029360_1° ed_ rev. 00

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 ei-
ther 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:
Ø 18,9 - 19,0

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 indica-
ted in figure 35.
Measurement
A
B
C
CHECKS AND OVERHAUL
Fitting mm
0,07 ÷ 0,041
Fitting mm
0,02 ÷ 0,059
Fitting mm
0,05 ÷ 0,098
Dimensions mm
29,72 ÷ 29,77
40,551 ÷ 40,576
17,92 ÷ 17,94
X
Max. wear mm
0,10
Max. wear mm
0,10
Max. wear mm
0,120
Max. wear mm
29,65
40,45
17,89
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