PEBCO®
DUSTLESS LOADING/SELF-CONTAINED DUSTLESS LOADING SPOUTS
MAINTENANCE RECOMMENDATIONS
24
6.10 DUST SLEEVE REPLACEMENT
Dust sleeves on DLS units do wear out over time and must be replaced. Use the following procedure
to replace the dust sleeve whenever holes or tears become evident.
!!! WARNING !!!
This procedure requires that the unit be moved between its retracted and extended positions. Before
repositioning the unit, ensure that all personnel are standing clear of the unit. After repositioning of the unit,
fully isolate the unit from all power sources.
Take all appropriate precautions for working on equipment suspended from overhead. Failure to take
prudent safety measures can result in serious injury or death.
1. In the retracted position, loosen the sleeve retaining bolts at the top end of the sleeve, and
remove the top of the sleeve from the tub.
!!! WARNING !!!
On dustless loading spout units with lengths greater than 8 feet, the dust sleeve becomes quite
heavy. Special handling consideration must be given to the dust sleeve when performing this
maintenance.
2. Lower the spout about 12 inches and disconnect the three cone support cables from the
attachment points inside the tub. Allow the cones to nest within the outlet assembly.
3. Lower the spout until it rests on a work platform or some type of support, approximately
halfway through its travel. Do not work on the spout while the weight of the unit is supported
on the three lift cables. Also, do not lower the spout to its full extended position while making
these changes.
4. At this time, disconnect the three outside lift cables from the outlet assembly. This will allow the
outlet assembly, stacking cones, and outer sleeve to be lowered without unbolting the housing
assembly.
5. Loosen the sleeve retaining bolts at the bottom of the sleeve, and lift the sleeve off the spout.
6. Lift the new sleeve over the cone stack, and seat it in the outlet assembly. Align the sleeve with
the spout lifting cables such that the bolts will capture the cables without severe rubbing. Do not
tighten the lower sleeve retaining bolts at this time.
7. Attach the lifting cables to the outlet assembly.
8. Raise the spout to within 12 inches of the full-up position, and reconnect the cone support
cables.
9. Install the top ring of the sleeve inside the tub. Tighten the upper sleeve retaining bolts, applying
Loctite 243 (567 for stainless steel applications).
