length DACIA SUPERNOVA 2004 User Guide

40
GENERAL
40 - 6
WELDING TYPES AND P
ARAMETERS
At the reparation of the welded body elements, thre e welding categories may be used:
prot e c t ion ga s weldi ng (CO2), e l e ctri c spot weldi ng and fi l l ing m a teri als wel ding
(autogenous). At the autogenous welding, it is recommended that flame must be slightly inclined so
that arch can be seen and the flame extremity to be maintained at aprox. 5 m m from the
part to be welded.
1. Spot welding resistive para meters for steel plates with carbon c ontent C < 0,15 %.
Plate thic kness (mm) Welding current (KA) Welding time (per) Tightening force ( daN m. )
0,5 6,5 5 130
0,8 8,0 8 200
1,0 9,5 10 250
1,25 10,5 10 295
1,5 10,0 14 310
2,0 12,0 16 350
NOTE
1 period = 1/50 part of a second
2. Welding parameters for the welding in protector gas for carbon steel plates or low-
alloyed steel.
Horizontal welding position ( pict.1)
Plate thickness (mm) 0,61,0 1,5 2,0
Electrode diamet er (mm) 0,6 0, 80,8 1,00 ,8 1,0 0,8 1,0
Welding wire speed (m/min) 2,5 1,9 3,2 2,4 4,4 3,8 5,7 4,4
Welding current (A) 35 35 55 80 80 120 100 130
Welding speed (m/min) 0,25 0,25 0,35 0,33 0,33 0,50 0,45 0,45
Welding voltage (V) 17 17 18 18 19 19 20 20
Protection gas flow (1/min) 12 - 17
Electrode fr ee length (mm) 6 - 12
plates welding
in tiers end to end
welding corner
welding
0-1,5mm 0-1,5mm
vnx.su

40
GENERAL
40 - 7
WELDING TYPES AND P
ARAMETERS
NOTE
In case of using the Ar + CO2 mixture, the welding voltage will decrease with 2 V.
Ve rtical welding position ( obligatory from top to bottom) pict. 2
Plate thickness 0,6 12 2,0
Electrode diameter (m m) 0,6 0,8 0,8 1,0 0,8 1,0
We l ding wire speed (m /min) 2,5 1,9 3,3 3,2 5,7 4,4
We l ding current (A) 35 35 70 100 100 130
We l ding speed (m/min) 0,25 0,25 0,38 0,48 0,50 0,50
We l ding voltage (V) 17 17 18 18 20 20
Pr otection gas flow (1/min) 12 - 17
Electrode fre e length (mm) 6 - 12
vnx.su

40
GENERAL
40 - 9
C
OLLISION DIAGNOSIS
CENTRAL PA RT CHECKING
This c hecking is performed in the purpose to establish if one of the distortions is not
affecting this floor part, from where the checking starts. Compare the followings lengths : EI = FJ; EJ = FI.
FRONT LONGITUDINAL GIRDERS CHECKING Compare the followings lengths: CG = DH; CH = DG.
If the lengths ( CH - DG) and the diagonals (CG - DH ) are not identical, check again
the point ( 3).
If points (1) and ( 2) are good, the front axle angles may be checked.
vnx.su

40 -10
C
OLLISION DIAGNOSIS
REAR LONGITUDINAL GIRDERS CHECKING
Compare the following lengths: EK = FL; EL = FK.
RE AR ARM CHECKING
Compare the following lengths: FM = EN.
If a difference is noticed when measuring the lengths ( FM – EN ), the rear arms are to
be replaced.
The checking operation of the rear arm s is followed by a checking performed with the
gauge fixed on the arm and on the central longitudinal girde r.
40
G ENERAL
vnx.su

NON SIDE OPENINGS ELEMENTS MECHAN ISMS
52
52 - 3
HATCHBACK LOCKING SYSTEM (old model)
DISMOUNTING
Loosen the screw for rod length adjustment (5) of the hatchback opening and detach the rod;
Remove the fork (2) and the gasket (4) releasing the hatchback opening control assembly (3)
Dismount the screws (1) and the special axle (6), releasing the guiding case (7 ) .
REMOUNTING
Perform in the reverse order the dismounting operations, the opening rod length adjustment
being performed with the hatchback opened and the lock blocked, in order that aft er three
consecutive drives, the rod mechanism control shall remain permanently tensioned.
HATCHBACK LOCKING SYSTEM
7
vnx.su