Maintenance (Mixer) - MULTIQUIP EM70SH5 Operation Manual

DRUM HEAD SEALS
On each end of the mixing drum there is a drum head
containing self-adjusting graphite seals. These seals
consist of packing rings, split glands, and spring-activated
adjusters. A properly maintained seal prevents material
from working around the shaft, causing excessive wear.
The following is the recommended maintenance procedure
for protection of the paddle shaft.
1. Keep the drum head clean of material buildup so the
spring adjusters are free to work.
2. As the seals naturally wear, material will seep from
the drum head. Tighten the adjusting nuts (Figure 43)
equally until a slight pressure is felt. The seals are now
tight. This procedure should be done periodically as
the seals leak.
Figure 43. Drum Seal Adjusting Nuts
3. Once the pressure plate touches the drum, it is time
to replace the graphite seals (Figure 44).
Figure 44. Replacing Drum Seals
PAGE 36 — EM70 SERIES PLASTER/MORTAR MIXERS • OPERATION MANUAL — REV. #2 (10/30/19)

MAINTENANCE (MIXER)

DRUM SUPPORT BRACKET LUBRICATION
There is a set of drum support brackets (Figure 45) that will
require lubrication. These brackets are intended to make
the drum rotate freely. Lubricate the grease fitting for each
drum support bracket using multipurpose-grade grease
every month or whenever the drum becomes difficult
to position.
GREASE FITTING
AND CAP
DRUM SUPPORT
BRACKET
TOW END
Figure 45. Grease Fittings (Dumping Mechanism)
NOTICE
Failure to lubricate the Zerk grease fittings two or three
times a month will cause the dumping mechanism to
stiffen, making the mixer hard to dump.
BALL SOCKET AND CLAMP FACE MAINTENANCE
1. If the towing vehicle is equipped with a ball socket,
smear the socket periodically with multipurpose grease.
This will keep the ball socket well lubricated.
2. Periodically oil the pivot points and clamp face
surfaces of the coupler with SAE 30 motor oil.
3. When parking or storing the mixer, keep the coupler
off the ground so dirt will not build up in the ball socket.
ENGINE
END