MULTIQUIP EM-70S Operation Manual page 31

EM-70 PLASTER/MORTAR MIXER — MAINTENANCE (MIXER)
Ball Socket and Clamp Face Maintenance
1. If the towing vechicle 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.
Countershaft Bearing Lubrication
There is 1 set of countershaft bearings (Figure 29) that will
require lubrication. Lubricate the grease fitting for each
countershaft bearing every 40 hours of operation using
any grade lithium base grease.
Figure 29. Grease Fittings (Countershaft)
Wheel Bearings
1. After every 3 months of operation, remove the hub dust
cap and inspect the wheel bearings (Figure 30). 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.")
Figure 30. Wheel Hub and Bearings
EM-70 PLASTER/MORTAR MIXER — OPERATION MANUAL — REV. #1 (008/10/04) — PAGE 31
2. Fill the wheel hub (Figure 30) 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.
Main Gear and Drive Pinion Alignment
1. Disconnect the spark plug wire (gasoline engines). If
mixer is equipped with an electric motor remove power
cord from AC power receptacle . In addition make
sure the clutch engagement lever is dis-engaged to
relieve V-belt tension.
2. The countershaft and drive pinion are mounted on a
slotted base. To align drive pinion with main gear, loosen
the pillow block mounting bolts and move them until
the necessary alignment has been made. Remember
gears must be paralleled aligned not skewed.
3. Using your hand, slightly move (rock) the drive pulley
back and forth to determine the amount of backlash.
Insert feeler gauge between gears to determine backlash
distance. Backlash should range between 0.007- 0.012
inches (Figure 31).
Figure 31. Drive Pinion and Main Gear (Backlash)