PAGE 30 — EM120 HYD. PLASTER/MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19)
MAINTENANCE (MIXER)
HYDRAULIC DUMP CYLINDER
Lubricate the grease fitting (Figure 33) on the dump cylinder
using multi-purpose grade grease
every two weeks
.
Figure 33. Dump Cylinder Grease Fitting
BALL SOCKET AND CLAMP FACE MAINTENANCE
1. If the towing vehicle is equipped with a ball socket,
smear socket periodically with multi-purpose grease.
This will keep the ball socket well lubricated.
2. Periodically oil
pivot points
and
clamp face
surfaces
of coupler with SAE 30 WT. motor oil.
3. When parking or storing your mixer. Keep the coupler
off the ground so dirt will not build up in the ball socket.
WHEEL BEARINGS
1. After
every 3 months
of operation, remove the hub
dust cap and inspect the wheel bearings (Figure 34).
Once a year, or when required, disassemble the wheel
hubs remove the old grease and repack the bearings
forcing grease between rollers, cone and cage with a
good grade of high speed wheel bearing grease (never
use grease heavier than 265 A.S.T.M. penetration
(“No. 2.”).
DUMP
CYLINDER
GREASE
FITTING
CAP
GREASE
FITTING
Figure 34. Wheel Hub and Bearings
2. Fill the wheel hub (Figure 34) with grease to the inside
diameter of the outer races and also fill the hub grease
cap. Reassemble the hub and mount the wheel. Then
tighten the adjusting nut, at the same time turn the
wheel in both directions, until there is a slight bind to
be sure all the bearing surfaces are in contact.
Then back-off the adjusting nut 1/6 to 1/4 turn or to the
nearest locking hole or sufficiently to allow the wheel
to rotate freely within limits of .001” to .010” end play.
Lock the nut at this position. Install the cotter pin and
dust cap, and tighten all hardware.
MIXER CLEANING
It is important that the drum interior is free of dried material.
Obstructions can cause the paddle blades to lock against
the drum.
1. Push the
“Engine Stop”
button inward to the
OFF
position to the stop the engine.
2. Place the hydraulic paddle lever (Figure 18) in the
neutral
position do disengage.
3.
ALWAYS
disconnect the spark plug wire
(gasoline
engines) before cleaning the inside of the drum. If mixer
is equipped with an electric motor
remove power cord
from AC power source
. In addition make sure the
clutch engagement lever is
disengaged
.
4. Place
“Do Not Operate”
tag on mixer.
5. Make sure the rear section of safety grate is connected
to the mixing drum.