Cleaning The Shaft; Cleaning An Agitator With A Siphon Kit; Servicing The Gear Reducer - Graco 25C528 Instructions - Parts Manual

Cleaning the the Shaft Shaft
Cleaning Cleaning the Shaft
For For models For models 25C528, models 25C528, 25C528, 25C533, 25C533, 25C533, 25M481
Each week, clean any dried fluid from around the
bearing (6) area of the shaft (7) and inspect the
bearing for cracking or excessive wear.
For model model 25C529 25C529
For For model 25C529
Each week, clean any dried fluid from around the
bearing (18) and bracket (23) area of the shaft (21).
Lubricate with several drops of light oil.
For models For For models models 26B618, 26B618, 26B619, 26B618, 26B619, 26B630, 26B619,
26B631, 26B631, 26B632, 26B631, 26B632, and 26B632, and 26B633 and 26B633 26B633
NOTICE
NOTICE NOTICE
Keep the agitator upright. Do not lay it on its side
or upside down, or liquid may flow down the shaft
and into the gear reducer area.
Each week, clean any dried fluid/material on the
shaft (6) near the housing (13). If any material is
on the shaft (6) within ½ in. (13 mm) of the housing
(13), it must be removed to prevent damage to the
bearing seal (14*). If the flexible lips on the bearing
seal are torn or worn such that they do not make
contact all the way around the shaft, the seal must
be replaced. A worn seal may allow foreign material
into the bearing and cause premature failure. See
Servicing the Gear Reducer, page 21
on getting access to the seal and for the Bearing
Replacement Kit Part No.
*Included in Bearing Replacement Kit 238251.
Cleaning an an Agitator Agitator with
Cleaning Cleaning an Agitator
Use the following procedure to flush and clean the
siphon tube (50a) and agitator shaft (6).
1. Raise the agitator out of the drum.
2. Remove the plain bearing (50d) from the agitator
shaft (6) and clean it.
3. Detach any attachments from the siphon tube.
Flush the siphon tube.
4. Loosen the retaining nut (50c) and slowly lift the
siphon tube (50a) out of the agitator.
5. Clean the inside and outside of the siphon tube
(50a). Flush the inside of the agitator shaft (6).
Clean the agitator blades (28) and the outside
of the shaft.
6. Reassemble the siphon tube by doing the reverse
of steps 2–4.
3A4792G
25M481 25M481
26B630, 26B630, 26B630, 26B630, 26B630,
for instructions
with a a a Siphon Siphon Kit Kit
with Siphon Kit
Servicing the the Gear Gear Reducer
Servicing Servicing the Gear
You may want to have the Bearing Replacement Kit
238251 on hand before you begin this procedure.
Bearing removal and installation instructions are
included in the kit.
Disassembling
Disassembling Disassembling
1. Relieve the pressure to the existing agitator.
Follow the Pressure Relief Procedure, page
2. If your agitator has a siphon kit, perform steps 2–4
in Cleaning an Agitator with a Siphon Kit, page
If your agitator does not have a siphon kit,
proceed to step 3 below.
3. Remove the agitator from the drum of material.
Separate the agitator from the agitator shaft (if
applicable):
a. For an in-drum agitator:
i. Unscrew the gearbox unit from the
center bung fitting of the 55-gallon drum.
Disengage and remove the unit from the
built-in shaft in the 55-gallon drum.
b. For an agitator without an elevator:
i. Remove and position the drum cover and
agitator by following the instructions in
Assembling and Positioning the Agitator,
page 10, see Without
ii. Carefully separate the gearbox output
shaft (6a) from the agitator shaft (6b)
using the wrench flats on both shaft
sections.
iii. Remove the agitator assembly from the
drum cover by loosening the screws
(25) that attach the gearbox to the drum
cover.
c. For an agitator with an elevator:
i. Raise the elevator (102), remove the
drum and place it out of the way. Lower
the elevator to the down position. The
elevator must be in the down position
when you do any work on the elevator,
agitator, or drum cover assembly.
ii. Carefully separate the gearbox output
shaft (6a) from the agitator shaft (6b)
using the wrench flats on both shaft
sections.
iii. Remove the agitator assembly from the
drum cover by loosening the screws
(25) that attach the gearbox to the drum
cover.
4. Remove the two short bolts (11) and the two long
bolts (19) that hold the upper housing (8) and
the lower housing (13) together. Carefully lifting
straight up, lift the upper housing off of the lower
housing.
Maintenance
Reducer
Reducer
19.
Without an an Elevator Elevator .
Without an Elevator
21.
21