4JB1/4JB1T/4JB1TC/4JG2 – ENGINE 6A1 – 57
6) Tap the piston pin out with a hammer and a brass bar.
If the pistons and piston pins are to be reinstalled,
mark their installation positions by tagging each piston
and piston pin with the cylinder number from which it
was removed.
INSTALLATION
6. Piston and Connecting Rod Assembly
1) Try to insert the piston pin into the piston pin hole with
normal finger pressure.
Weigh each piston and connecting rod assembly.
Select piston and connecting rod combinations so that
the weight variation of the different assemblies is held
within the specified limits.
g(oz)
Variance in weight Less than
after assembly 3(0.1058)
2) Clamp the connecting rod in a vise.
Take care not to damage the connecting rod.
3) Use a pair of pliers to install the piston pin snap ring to
the piston.
NOTE:
When changing piston/connecting rod combinations,
do not change the piston/piston pin combination.
4) Install the piston to the connecting rod.
The piston head front mark
!
and the connecting rod
"ISUZU" casting mark
"
must be facing the same
direction.
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