Dacia SuperNova (engine E7J). Service manual — part 13
ENGINE E7J-A-2/60
10
10 - 28
ENGINE AND LOWER ENGINE UNITS
The set is mounted in the crankcase in the
previously established order, and it is made
sure that a 0.1 mm-long wedge passes
between the jackets
The jackets are blocked by means of
MOT.484 stand.
Mount connecting-rod bearings
(connecting rod bearings are identical).
The crankpins and the bearings are
oiled.
The bearing caps are mounted. On no.
1 cap (in the K area) a thin layer of
RHODORSEAL 5661 is applied.
The screws are tightened at 2.5 daNm,
and then at an angle of 43
o
+/-6
o
.
The axial play of the crankshaft is
checked; it must be within:
* 0.045 and 0.852 with wear;
* 0.045 and 0.252 without wear.
MOT. 484
THE CYLINDER CRANKCASE
Take up the bearings of bearing on the housing
cylinders. Half-be aring liners that are to be
mounted on crankshaft bearing are provided with
oiling holes.
Be a ring liners a re ma tchning w ith the
crankshaft in two classes, as follows :
Marking on bearing linersMarking on crankshaft
Red
A
Blue
B
Identification of matching classes on
crankshaft is done by marking on the
counter-balance from number 5 bearing
liner.
Crankshaft marking example :
A
A
B
A
B
RECOVERY ENGINE
ENGINE E7J-A-2/60
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10 - 29
ENGINE AND LOWER ENGINE UNITS
The axial bushes can have: 2.80 mm,
2.85 mm, 2.90 mm, 2.95 mm.
The rod caps are mounted and tightened
at 4.2 daNm.
To check:
-the horizontal play of the rods;
-the rotation of the whole set.
To mount:
-the oil-pump (check the existence
of the centring jacks); the screws are tight-
ened at 2.5 daNm;
-the pinion and the carrying chain of
the oil-pump;
-the oil-seal ring on the front cap
(which is oiled), by means of the MOT
550 device;
-the front cap of the crankshaft; the
watertight-sealing is done with LOCTITE
518 (the girdle must be 0.6 - 1mm thick);
-the oil-seal ring on no. 1 bearing -
by means of MOT 1129 - 01.
The brim and the outer part of the oil-
seal ring are oiled.
550
THE CYLINDER CRANKCASE
RECOVERY ENGINE
ENGINE E7J-A-2/60
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ENGINE AND LOWER ENGINE UNITS
Mount the lower casing and tighten the screws at a moment of 1daNm.
The watertight-sealing is done with RHODORSEAL 5661; girdle D must be 3 mm thick.
Do not forget to replace the two crescent-shaped fittings (in the A area) with new
ones.
-the flywheel: beforehand oil the face for the placing of the flywheel on the crank-
shaft, using LOCTITE AUTOFORM; apply on the screws one drop of LOCTITE
FRENETANCH and tighten them at 5 - 5.5 daNm, after having blocked the flywheel
by means of the cogged sector MOT 582.
-the clutch (be cautious about the centring): screws are tightened at 2 daNm;
-the water-pump (the watertight-sealing is done with LOCTITE 518, the H girdle
must be of 0.6 - 1 mm). The screws are tightened at a couple of 1 - 2 daNm.
LOWER CASE
RE-MOUNTING
THIS OPERATION IS ALSO VALID IN CASE THE CRANKCASE IS RE-
MOUNTED ON THE CAR (SEE PAGE 10-36)
RECOVERY ENGINE
ENGINE E7J-A-2/60
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ENGINE AND LOWER ENGINE UNITS
CYLINDER HEAD RE-MOUNTING
.
The following are to be mounted:
-the jack for cylinder-head centring
on the block;
-the new cylinder-head fitting;
-the cylinder-head (after the stand
has been taken apart); the joining surface
cylinder crankcase- cylinder-head is care-
fully cleaned;
-the cylinder-head screws (whose
threads and screw-ends are oiled).
THE METHOD OF TIGHTENINGT
THE CYLINDER-HEAD
1. Pre-compressing the fitting
-all the screws are tightened at 2
daNm, then at 97
o
+/-2
o
, in the order below:
-wait for 3 minutes - the
stabilization delay.
2. Combustion-head tightening
-screws 1 - 2 are loosened till they
are totally free;
-screws 1 -2 are tightened at 2
daNm, then at 97
o
+/-2
o
;
Screws no. 2 are tightened at
2.3 daNm, but nor before oiling the
threads.
-the cylinder-head cap, without tight-
ening it (in order to be able then to set/
tune the distribution);
-the pinion of the crankshaft.
-the operation of loosening and
tightening is repeated for the screw groups
3-4-5-6-, then for 7-8-9-10.
The cylinder head is not restricted.
To be mounted subsequently:
-the rocker-arm ramp, by position-
ing marking no. 1 on the axis towards the
distribution;
RECOVERY ENGINE
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