Bendix Commercial Vehicle Systems ADB22X-V Air Disc Brakes - Manual (Page 32)

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5.6.20 Place a new brass guide bushing (7) on the dimpling
tool (T16) and insert it into the caliper bore.
T14/
KT14
7
View
“A”
7
View
“B”
View
“C”
FIGURE 77 - VIEW “A” AND “B”: DRAW THE BRASS BUSHING
INTO POSITION. VIEW “C”: LOCK THE BUSHING INTO
POSITION
5.6.21 Check that the fl ange (T08) is in an upright position
at the top of the caliper recess as you draw the brass
bushing (7) up, by turning the brass nut (T14), until
the dimpling tool bottoms on the caliper. When it
reaches the correct position, the brass bushing
extends out of the guide pin channel 0.039 in.
(1 mm.).
5.6.22 With the dimpling tool (T16) in position, tighten the
screw in its base until it contacts the dimpling screw
housing. The movement of this screw forces three
points outwards, leaving indentations in the brass
bushing. See Figure 77, view “C”.
5.6.23 Unscrew the dimpling screw out approximately 0.75
inches (20 mm.). Loosen the brass nut (T14) and
rotate the dimpling tool (T16) 60 degrees. Repeat
the dimpling process by tightening the brass nut
(T14) and then tighten the dimpling screw until it
contacts the dimpling screw housing. Back out the
dimpling screw approximately 0.75 inches (20 mm.).
The brass bushing (7) is now held in position by the
six dimples made by the tool.
5.6.24 Remove the installation tools and check the brass
bushing (7), removing any burrs, being careful not
to leave any metal fi lings in the bushing. Coat the
inside of the bushing with the white grease included
in the kit.
Installation of the Floating Guide Pin Bushing
5.6.25 To install the bushing (6) into the short guide pin
side, fi rst inspect the bore for corrosion, damage
etc. Clean as necessary.
5.6.16 Use the tool combination shown in Figures 74 and
75 (comprising T14, T20, T21, and a washer) to
remove the bushing (6). Screw nut (T14) onto the
assembly by hand, then tighten the bolt (T20) using
a box end wrench to draw out the bushing. Discard
the removed bushing, and verify that the bore is
clean by wiping with a shop cloth.
T21
Washer
T20
6
T14
FIGURE 75 - SECTIONAL VIEW: SHORT GUIDE PIN BUSHING
REMOVAL
Installation of the Fixed Guide Pin Brass
Bushing
5.6.17 Clean the caliper upper and lower surfaces around
the bushings.
5.6.18 Clamp the carrier in a vise so that the guide channel
is vertically oriented.
T16 / KT16
T13 / KT13 Washer
T08 / KT08
Grease the bolt prior to each use
T14 / KT14
FIGURE 76 - LONG GUIDE PIN BUSHING INSTALLATION AND
DIMPLING TOOL
5.6.19 Place the washer and thread the brass nut (T14) on
to the bolt (T13) followed by the fl ange (T08). See
Figure 76.