Multiquip MS20E - Manual (Page 28)

PAGE 28 — MQ STOW MS20H/MS20E MIXER — PARTS & OPERATION MANUAL — REV. #3 (08/10/06)
MS20H/MS20E MIXER — MAINTENANCE
WHEEL BEARINGS
After every 3 months of operation, remove the hub dust cap and
inspect the wheel bearings. 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.”) Fill
the wheel hub 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.
DRUM HEAD SEAL CARE
Grease every 40 hours of operation using any grade #1 lithium
base grease . Appy grease until visible inside of mixing tub (over
grease). This will purge the seal system of contamination.
PADDLE SHAFT BEARINGS
The paddle shafts in the MQ STOW mixers rotate in sealed ball
bearings, which require no additional lubrication as they are
packed and sealed at the factory.
There is, on each end of the mixing drum, an zerk grease fitting .
Oil these fittings two or three times each week as they lubricate
the dumping mechanism of the mixing drum.
CAUTION:
Failure to lubricate the zerk grease fittings
two or three times a week will cause the
dumping mechanism to stiffen, making the
mixer hard to dump.
BEARING BRACKET
Grease the bearing bracket every month.
GEAR ALIGNMENT
The countershaft and drive pinion are mounted on a slotted
base. To align gears, loosen the pillow block mounting bolts and
move them until the necessary alignment has been made.
GEAR LUBRICATION
The surface of the pinion and bull gear should be very lightly
greased every
250 hours . IMPORTANT! avoid over-greasing.
Excess grease will accumulate contaminates and cause
premature wear.
CLEANING
ALWAYS disconnect the spark plug wire before cleaning the
inside of the drum.
NEVER pour or spray water over the gasoline engine or electric
motor.
For consistent performance, long life and high quality mixing,
thoroughly clean the mixer inside and out at the end of each
day’s operation. To prevent lumps of dried mortar from forming
and contamination of future batches, do not allow a buildup of
materials to form on the blades or anywhere inside the drum.