Dacia 1304 2004, Repair Manual

Page: 77 / 654

10
10 - 43
ENGINE AND LOWER ENGINE UNITS
NOTE:
If wear of the connecting rods is noticed or if the parallelism of the shafts is not
correct, the connecting rods shall be corrected or replaced.
For the new connecting rods, a check shall be made so that they belong to the same
weight class (they shall not have the same colour marked on them).
PREPARATION OF THE PISTON SHAFT
Check if the piston shafts rotate freely in the
corresponding pistons.
Mount shaft on the mounting mandrel (
1
);
the pistons shaft shall freely rotate on the mandrel.
Mount the centering mandrel (
2
) on the
mounting mandrel ( 1 ).
Grease the mandrel-piston shaft assembly
with special grease containing
MoS
2.
PISTON – CONNECTING
Use an electric plate of 1500 W .
(electric oven)
Heat the crosshead end of the connecting rod
in the furnace at a temperature of about
250°C
(
10 – 15 minutes
) in order to increase the bor-
ing of the connecting rod crosshead end by dila-
tation.
The temperature is checked by placing a piece
of tin (
a
) on the crosshead of the
connecting rods; heat the connecting rods until
the tin melts.
On the piston head there is an arrow marked
which must be oriented towards the flywheel.On
the oposite side of the piston there is a bladed
item on which the piston lay when the piston shaft
is mounted.
ROD PISTON SHAFT ASSEMBLY
DISMOUNTING – MOUNTING
vnx.su