Page 34 - KNORR Pneumatic Disc Brake

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Tappet and Boot Assemblies (13) and Inner Seals (22) Replacement

7.2.7. Guide the tool (L ) over the spigot of the threaded
1
tube (16) as shown, screw out (T03) until it touches the 22
brake disc (see Fig.). ‘L ’
1
7.2.8. Fully press in the inner seal (22) by securing (T09)
with a spanner 27 A/F and rotating (T03) against the brake
disc using a second spanner until it stops (see Fig.).

7.2.9. Unscrew (T03) and remove complete tool (L ).
1
7.2.10. Check the correct fitting of the inner seal (22) by T03 T09
winding out the threaded tubes (16) four or five threads via
the shear adapter (61).
Note: The inner seal (22) must not turn. 7.2.7 - 7.2.8 - Using press-in tool L to fully press in inner seal
1
With caliper removed from the vehicle: (not shown):
The fitting sequence of inner seal (22) is basically the same 22
as when the caliper is installed on the axle (see previous
section), but use the press-in tool (L ) with (T03+T04+T09)
2
to press in inner seal (22) (see Section 7).
Check the correct fitting of the inner seal (22) by winding
out the threaded tubes (16) four or five threads via the
shear adapter (61).
Note: The inner seal (22) must not turn. 16

7.2.10 - Checking correct fitment of inner seal
7.3 Fitting of Tappet and Boot Assemblies (13)
(E ) T03 T28 T56
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The Tappets are supplied with a special long-life
lubricant within a protective cap.
Before fitting, the protective cap must be removed
and discarded in the appropriate manner. The lubri-
cant must not be smudged or removed. Transfer
of the lubricant to other parts should be avoided. T02
Also adding additional lubrication from any other
substance is not allowed. 7.3.1 - Press-in tool (E ) 1
With caliper installed on the vehicle: 1
16 ‘E ’ 13
7.3.1. To fit the tappet and boot assemblies (13), use tool
(E ) (see Fig.).
1
7.3.2. Wind back fully the threaded tube (16) until it stops 161
(see Section 6.1.4).
Note: The sealing surface (X) for the boots in the caliper T03
must be clean and free of lubrication.

7.3.3. Fit new tappet bushes (161) onto the spigots of
the threaded tubes (16), then follow with the tappet and
boot assemblies (13) pushing them into position (see Fig.). 13
X
7.3.4. Position tool (E ), note at this point (T56) is not
1
required, so that (T28) touches the brake disc. Using
a spanner, screw out (T03) to press tappet and boot 7.3.3 - Fit new tappet bush / tappet 7.3.4 - Press in the tappet using
1
assembly (13) into place. with boot assembly to the spigot tool (E ) (without T56)

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