Repair Of A Welded Joint - PREVOST H3-41 Maintenance Manual

SECTION 18a: H3 SERIES BODY
9. Allow cooling down of filler bead (about 5
minutes).
10. Shave filler bead to make it level to the floor.
Use supplied knife
purpose.
NOTE
To facilitate the cut, you can spray some soapy
water onto the joint.
CAUTION
The procedure for turning the torch off must
absolutely be followed. If this step is not taken,
the element may burn.
11. Set temperature
position. Fan will evacuate residual heat.
Leave the torch in operation as it is for 3
minutes.
40
PA1621 Maintenance Manual All Series
designed for that
potentiometer to "0"
|
Revised Sept 2019
12. Perform adhesion test using the tip of a flat
screwdriver; apply a slight pressure on the
joint.
13. If welding was not performed properly, there
will be a loss of adhesion on one side. If this
is the case, repair the joint.

14.3 REPAIR OF A WELDED JOINT

NOTE
In wintertime, condensation
temperature may greatly influenced bonding
parameters. Working area must be at a
temperature sufficient to prevent reaching
condensation point.
working area (heat lamp or heat gun) or wait
until vehicle reaches room temperature.
1. Using a knife, remove portion of joint to be
repaired.
NOTE
Loss of adhesion may be local. If this is the
case, repair may also be local.
2. Chamfer the joint again as indicated in
paragraph 3, Section: WELDING OF JOINT
BETWEEN WHITE SAFETY STRIP AND
"TARABUS" FLOOR COVERING.
3. Re-weld the joint as indicated in paragraphs
6, 7 and 8. Use your thumb to hold the filler
bead end.
and cold
Mechanically preheat