23
Chemical Gasket Material
Description
Chemical gasket material is a substance
with a pasty consistency that sets at ambient
temperature forming a resistant packing. The
gasket materials adopted by Meritor are
FAG 3 (Loctite) and Neutral Silicone
(Dow Corning 768 or Rhodia 567/666).
Clean Parts
Carefully remove all old gasket material from both
surfaces to be joined and clean both surfaces
removing dirt, oil, grease or moisture. The residue
from the previous gasket must be removed with a
flat-bladed tool or sandpaper and afterwards
cleaned with an oil-free solvent such as xylol,
toluol or methyl ethyl ketone.
Take care not to scratch the surfaces because this
could cause leaks in the future.
Dry Parts
Make sure that the surfaces to be joined are
perfectly dry before applying the gasket material.
Applying Silicone Gasket Materials
WARNING
Take care when you use silicone gasket materials
to avoid serious personal injury. Follow the
manufacturer’s instructions to prevent irritation
to the eyes and skin.
1.
Apply the gasket material around one surface
and around the edge of all fastener holes to
ensure a complete seal that will prevent oil
leakage through the gasket. If using Neutral
Silicone, apply a continuous bead
approximately 0.12-inch (3 mm) in diameter
or apply FAG-3 with a brush.
Figure 4.6
.
CAUTION
Do not apply excessive amount of gasket material
because it will be displaced into the unit, causing
difficulty with future disassemblies. Faults in the
application of the gasket material bead could be
the cause of future leakage.
2.
After applying the gasket material, assemble
the components immediately to permit the
gasket material to compress evenly between
the parts.
3.
Tighten the fasteners to the required torque
value specified in Section 7.
Figure 4.6
0.12" (3 MM) IN DIAMETER