19
310524
Service
Removing a Material Drum from the
Supply Unit
WARNING
PRESSURIZED FLUID HAZARD
Bursts of material and air will exit the
bleed port! To reduce risk of injury or
damage to equipment, wear eye
protection, gloves and protective clothing
whenever working with this supply
system.
Before you perform the procedures in this section,
remove the material drum from the supply unit. Ob-
serve the cautions and warnings, then follow steps 1
through 4 of the procedure for Changing Empty
Drums on page 14.
Servicing the Follower
This section describes how to service the wipers
without removing the follower plate from the supply
unit.
Servicing Wipers
For replacing T–Wipers (243279), see Graco form
309161. To replace worn or damaged wipers (w):
Fig. 5
w
1.
Raise the follower plate up out of the drum by
observing the cautions and warnings, then follow-
ing steps 1 through 4 of the procedure for Chang-
ing Empty Drums on page 14.
2.
Separate the wiper butt joint and bend back the
strapping that covers the clamp. Loosen the clamp
by unscrewing the worm gear, then remove the
wiper.
3.
Thread the strapping through the new wiper.
4.
Install the wiper on the follower plate.
a.
Position the wipers so the butt joints are 180
_
apart (Fig. 5).
b.
Insert the end of the strap through the clamp
and tighten.
5.
Pound the wiper all the way around the follower
plate, with a rubber mallet, until the ends are
butted tightly together.
6.
Repeat steps 2–5 for the second wiper.
7.
Apply a lubricant to the wipers. The lubricant
should be compatible with the material to be
pumped. (Check with the material supplier for a
compatible lubricant.)
