35
WHEELS AND TYRES
CARACTERISTICSRIMS
The wheels identification marking is represented in two ways:
- engraved marking for steel rims
- cast marking for aluminum rims
The marking enables acknowledgment of the main wheels dimensions criteria. This marking
may be:
complete,
Example: 5
1/2 B 13 4 CH 46 ; 5 1/2 J 13 4 H2 46
or simplified,
Example: 5
1/2 B 13 ; 5 1/2 J 13 H2
The wheel bolts (studs) are situated on a diameter of 100 mm.
Maximum axial runout : 1 mm measured on the rim edge ( in G ).
Maximum radial runout : 1 mm measured on the supporting side of the tires beads.
AB C D EF
Whe els Width The rim Æ Nominal Number of Tire Offset
type (in inches) edge profile rim (in inches) wholes under staffing profile (in mm) the tire bead
5
1/2B13 5 1/2B1 34C H46
4 CH48
5
1/2J13 5 1/2J1 34H 246
4H 2
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WHEELS AND TYRES
35CARACTERISTICS
1 - 165 - Tire width in mm ( 1 )
2 - 70 - h / l height / width ratio;
4 - R - Radial structure
5 - 13 - Inner diameter in inches (Æ) ;
this is corresponding with the rim diameter
6 - 79 - Charging index
3 - T - Speed index max. 190 km/ h
Symbols speed
M ax speed
R 170
S 180
T 190
U 200
H 210
V 240
ZR more than 240
Stru cture types :
D iagonal No marking
Radial R
D iagonally belted B
TIRES
Identification marking examples: 165 / 70 R 13 79 T
165 / 70 R 13 79 T
1 2 4 5 6 3
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40
GENERAL
40 - 5
The replacement (repara tion) operations of t he weldable elements descri bed i n t his
chapter a re specified subject to: cutting out of t he parts t o be replaced; the a ccess to the
welded elements, tools and checking devices accessibility, etc.
In case the vehicle body has suffered import ant deform ations it is recommended the
str aightening of t he damaged body elements, by means of some hydraulic pre sses, the
operation being performed slowly and at cold. For this range of vehicles, the e lements re sistance structure which a re a ffecting the
vehicle securi ty, are not to be partially re placed ( not to be cut), but entirely.
After welding detaching, the body elements must remain stra ight, without breakage or
cracks, the possible holes being covere d out with filling material or by tinning. The body
elements surfaces are t o be pickled ( to eliminate possible oxidation marks) , dried and
initially applied a paint layer. The electric welding detaching of the body elements, is performed as follows:
- with a well sharpen chisel, this method may lead to part s deformation or even
parts breaking.
- by using some extractors equipped with steel cutter type Bre ndeo or Pickvant
max. 6 mm, having the cutting head as per shape shown in pict.1.
1. Centeri ng point
2. Sharpen slope
3. Drill acting edges
4. Gap for catching the welding materialP = aprox. 0.4 mm
Whatever method is used, the remaining element m ust be in good order a nd to allow
performing of a good quality welding point.
The pl ates cutting it is recommended t o be pe rformed ( subject of importance and thick-
ness ) using manual scissors or pneumatic portable tools for plates cutting.
Du ring cutting or welding of the body elements it is necessary to protect the electric
wir ing from the interi or of the body structure.
The cutting, welding, or strengthening operation done on body welded elements, are to
be performed on body checking/ straightening bench type CELETTE .
IMP ORTANT
When removing or straightening the body resistance e lements i t i s forbidden t he
total or partial heating, in order to avoid the mechanical resistance and metal elasticity
decreasing. REPAIRIN
G GENERAL CONDITIONS
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