4.2.2.4
Wear spacers are slotted to allow for in-place
removal. Using a narrow chisel wedged into the
slot in the spacer, as shown in Figure 11, pry
the wear spacer until it fractures and is clear
to be removed from the stud. Repeat for the
remaining spacers in the set that is to be
removed (one spacer from each stud location).
Be sure to collect
all
wear spacers
when removed. Spacers lodging in
between tensioner components could
prevent the tensioner from properly
engaging or releasing.
4.2.2.5
While supporting the weight of the cylinder/
piston assembly, tighten the locknuts (18)
ONE
TURN AT A TIME
and in a crosswise pattern,
until the cylinder is seated firmly against the
clamp tubes. Torque the locknuts to the
appropriate value. See Table 4.
The locknuts (18) must be tightened
gradually and evenly to prevent
damage to the brake components.
4.2.2.6
Reinstall the support bracket if required.
4.2.2.7
Restore any piping or covers removed prior
to operating the tensioner.
4.3
Disassembly Procedures
Ensure that the machinery is and will
remain in a safe position prior to
loosening fasteners or removing the
tensioner.
4.3.1
Disconnect the air supply lines and water
lines from the tensioner.
4.3.2
Remove the fasteners that secure the tensioner
(and support bracket, if applicable) to the
mounting structure.
4.3.3
Using soft slings, rig the tensioner and slide the
WCB2 off of the gear. Avoid placing slings or
straps directly on the release springs (34).
4.3.4
Transport the tensioner to a clean working area
and position the unit on a flat surface with the
mounting flange (1) facing down.
4.3.5
If the gear (28) requires replacement, remove it
from the shaft with a portable jack, using
the threaded holes in the end of the gear for
puller holes. Heating may be required to ease
removal. Replace the gear and install per
Section 2.2.
4.3.6
Match-mark the mounting flange (1), reaction
plates (30), pressure plate (13) and cylinder
(19) to one another prior to disassembly to
adequately show the proper orientation of
components and various ports to one another.
4.3.7
Loosen the locknuts (18) ONE TURN AT A TIME
and in sequence until the release spring force is
relieved.
4.3.8
Lift the cylinder and piston off of the studs as an
assembly. Set the assembly aside on a clean,
level area, making sure to avoid damaging the
face of the piston.
4.3.9
Continue removing the remaining components
if required.
4.3.10
Inspect all components using the wear limits
in Table 14 as a reference.
4.3.11
For friction lining replacement refer to
Section 4.4 or 4.5.
4.3.12
For wear plate replacement refer to
Section 4.6.
4.3.13
Refer to Section 4.7 to replace seals.
4.3.14
Assemble the tensioner per Section 4.9.
Figure 11
WCB 11070 VP 4.2 Format
18
© Copyright Eaton Corp., 2003. All rights reserved
April 2002 (Revised June 2003)
