P/N: A-22075/6, Rev. 1.1
Page 11 of 45
CAUTION
: Do not use a sharp tool to press the new gasket into place or gasket
damage may result.
2.2.7
For tongue-and-groove mountings, inspect the tongue of a reconditioned or retested valve by
running your fingernail around its inner and outer edges to check for damage. The tongue
dimensions have diameter tolerances of ±0.003", thus any excess material on these diameters
will make it difficult to fit the tongue into the groove. If the tongue is peened over, remove excess
material to meet AAR tongue tolerances.
CAUTION
: To prevent
tongue damage
, do not install a valve having damaged
sealing surfaces.
2.2.8
Remove the rubber plug (which was inserted in Step 2.2.1) from the cover plate.
2.2.9
Position the valve gently into the mounting. Align the body holes over the studs and lower the
valve while positioning the valve tongue in the cover-plate groove.
CAUTION
:
Tongue Not in Cover-Plate Groove
. Verify that the valve tongue has fit
into the cover-plate groove. It must be so engaged before continuing with the next
step or valve damage may result.
2.2.10 Install the nuts and tighten them in 1/3-torque increments in a diagonally alternating sequence to
a torque specified by the gasket specified, as shown in in Figure 2-2 below. Consult gasket
manufacturer for recommended torque requirements.
Figure 2-2 Tighten in Alternating Sequence
CAUTION
CAUTION
CAUTION
