G424 Service Manual Base Engine Service Procedure155
DEN0050
7EN0431
7EN0390
Removal Service Points
A Connecting rod cap removal
Mark the cylinder number on the side of the connecting rod
big end for correct reassembly.
B Piston pin removal
The special tool, Piston Pin Setting Tool (MD998780),
consists of the parts shown in the illustration at the left.
(1) Insert the special tool, Push Rod, into the piston from
the side on which the front mark is stamped in the piston
head, and attach the guide C to the push rod end.
(2) Place the piston and connecting rod assembly on the
special tool, Piston Pin Setting Base, with the front mark
facing upward.
(3) Using a press, remove the piston pin.
NOTE: Keep the disassembled piston, piston pins and
connecting rods in order according to the cylinder number.
Cylinder
number
Push rod
unit:mm(in)
Base
Guide B
Guide C
Guide A
17.9(0.705)
Guide A
18.9(0.744)
Guide A
20.9(0.823)
Guide A
21.9(0.862)
Push rod
Front mark
Guide C
Front
mark
Base