Bendix Commercial Vehicle Systems ADB22X-V Air Disc Brakes - Manual (Page 34)

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begin to tighten the bolts. With the caliper/carrier
in a vice, continue installing the bolts to a torque of
133 ft. lbs. (180 N·m). Finally, tighten each bolt an
additional 90º (ninety degrees).
Installation of the Guide Pin Caps
5.6.38 See Figure 84. Place
the caliper/carrier as-
sembly on a bench
so that the inner
boots are fully com-
pressed, check that
the bores are clean
and dry (e.g. free
from lubrication).
BOOT
COMPRESSED
FIGURE 84 - BOOTS MUST
BE COMPRESSED FULLY
DURING CAP INSTALLATION
Note: It is important that the inner boots are fully
compressed during this procedure to ensure that
the least amount of air is retained within the guide
pin channel. If too much air is trapped, the bellows
can potentially be damaged during the operation of
the brake. It is also important that the technician
double-check that the retaining rings remain in their
correct position during this procedure.
5.6.39 Clean the two caps, and check that the caliper
surfaces where the caps will be installed are clean
and have no signs of damage.
5.6.40 Select one cap to
install. Using the
c o r r e c t p r e s s - i n
tool — the smaller
cap (10) installs in the
long guide pin side
using tool (T26), and
the larger cap (68)
installs in the short
guide pin side using
tool (T27) — place
the cap in position,
using the machined
channel in the caliper
to assist in centering
the tool.
FIGURE 85 - BOOTS MUST
BE COMPRESSED FULLY
DURING CAP INSTALLATION
Use a hammer to tap the cap into position. See
Figure 85. Note that the tool needs to remain
perpendicular to the channel to prevent damage
during installation. Note that, after installation, the
smaller cap (10) extends 0.08 in. (2 mm.), and the
larger cap (68) extends 0.61 in. (15.5 mm.).
Repeat for the second cap.
5.6.41 Check that the guide pins move freely when the
carrier is moved laterally, and that air is not trapped
within the inner boots, and that the boots (9) and
ring (58) are in the proper position before continuing
with the installation.
5.6.42 Install the caliper/carrier (See Section 5.3).
5.6.43 Install the brake chamber (See Section 5.4).
5.6.44 Install the brake pads (See Section 5.2).