MBW MM60 User manual

OPERATOR’SSAFETY
AND SERVICE MANUAL
MBW, Inc.
250 Hartford Rd • PO Box 440
Slinger, WI 53086-0440
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.mbw.com
MBW (UK) Ltd.
Units 2 & 3 Cochrane Street
Bolton BL3 6BN, England
Phone: [phone]
Fax: [phone]
MBW FRANCE S.A.R.L.
Z.A. d’Outreville
11 rue Jean Baptiste Néron,
60540 BORNEL
FRANCE
Phone: [phone]
Fax: [phone]
Email: [email protected]
L16746. 04.14.T
©MBW, Inc. 2005
Printed in the USA
MM60
MM80
MM90
This manual covers the following serial numbers
and higher for each model listed:
MM60 . . . . . . . . . . . . . . . . . . . . 7011600
MM80 . . . . . . . . . . . . . . . . . . . . 7032000
MM90 . . . . . . . . . . . . . . . . . . . . 7051100
MORTAR & PLASTER MIXERS

TABLE OFCONTENTS
Safety Information . . . . . . . . . . . . . . . . . . . . . . 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety Decals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Before Starting & Operating . . . . . . . . . . . . . . . . . . . . 6
Wiring Electric Motor. . . . . . . . . . . . . . . . . . . . . . . . . . 6
Starting Gas Engine . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Starting Electric Motor . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Stopping Gas Engine . . . . . . . . . . . . . . . . . . . . . . . . . 6
Stopping Electric Motor. . . . . . . . . . . . . . . . . . . . . . . . 7
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . 8
Engine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Engine Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Belt Guides. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Greasing Wheel Bearings . . . . . . . . . . . . . . . . . . . . . 9
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Engine Shroud Removal . . . . . . . . . . . . . . . . . . . . . 10
Engine Shroud Installation . . . . . . . . . . . . . . . . . . . . 10
Drum Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Drum Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Drum Bearing & Seals Replacement . . . . . . . . . . . . 11
Engine Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Engine Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Parts Replacement Cycles and Tolerances . . . . . . . 12
Replacement Parts . . . . . . . . . . . . . . . . . . . . . 13
Drum Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Drivetrain Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electric Motor Drivetrain Assembly . . . . . . . . . . . . . 18
Idler Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Air Mixer Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 22
Frame & Axle Assembly . . . . . . . . . . . . . . . . . . . . . . 24
Paddle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

CALIFORNIA PROPOSITION 65 WARNING
Engine exhaust and some of its constituents are
known in the state of California to cause cancer, birth
defects, and other reproductive harm.
WARNING

- 1 -
SAFETY INFORMATION
Introduction
This Safety Alert Symbol is used to call attention
to items or operations which may be dangerous
to those operating or working with this
equipment. The symbol can be found
throughout this manual and on the unit. Please read these
warnings and cautions, along with all decals, carefully
before attempting to operate the unit. Make sure every
individual who operates or works with this equipment is
familiar with all safety precautions.
WARNING
GENERAL WARNING. Indicates information
important to the proper operation of the
equipment. Failure to observe may result in
damage to the equipment and/or severe bodily
injury or death.
CAUTION
GENERAL CAUTION. Indicates information
important to the proper operation of the
equipment. Failure to observe may result in
damage to the equipment.
Safety Precautions
LETHAL EXHAUST GAS: An internal
combustion engine discharges carbon
monoxide, a poisonous, odorless, invisible
gas. Death or serious illness may result if
inhaled. Operate only in an area with proper
ventilation. NEVER OPERATE IN A
CONFINED AREA!
DANGEROUS FUELS: Use extreme caution
when storing, handling and using fuels, as
they are highly volatile and explosive in vapor
state. Do not add fuel while engine is running.
Stop and cool the engine before adding fuel.
DO NOT SMOKE!
SAFETY GUARDS: It is the owner's
responsibility to ensure that all guards and
shields are in place and in working order.
IGNITION SYSTEMS: Breakerless, magneto,
and battery ignition systems can cause severe
electrical shocks. Avoid contacting these
units or their wiring.
SAFE DRESS: Do not wear loose clothing,
rings, wristwatches, etc. near machinery.
NOISE PROTECTION: Wear OSHA specified
hearing protection devices.
EYE PROTECTION: Wear OSHA specified
eye shields, safety glasses, and sweat bands.
FOOT PROTECTION: Wear OSHA specified
steel-tipped safety shoes.
HEAD PROTECTION: Wear OSHA specified
safety helmets.
DUST PROTECTION: Wear OSHA specified
dust mask or respirator.
OPERATOR: Keep children and bystanders
off and away from the equipment.
REFERENCES: For details on safety rules and regulations
in the United States, contact your local Occupational Safety
and Health Administration (OSHA) office. Equipment
operated in other countries must be operated and serviced
in accordance and compliance with any and all safety
requirements of that country. The publication of these
safety precautions is done for your information. MBW does
not by the publication of these precautions, imply or in any
way represent that these are the sum of all dangers present
near MBW equipment. If you are operating MBW
equipment, it is your responsibility to insure that such
operation is in full accordance with all applicable safety
requirements and codes. All requirements of the United
States Federal Occupational Safety and Health
Administration Act must be met when operated in areas that
are under the jurisdiction of that United States Department.
Safety Decals
Carefully read and follow all safety decals. Keep them in
good condition. If decals become damaged, replace as
required. If repainting the unit, replace all decals. Decals
are available from authorized MBW distributors. Order the
decal set listed on the following page(s).

- 2 -
U.S. PATENT 6,695,467
17949
Safety Decals (Decal Set #15074)
Before Towing:
1. Check running gear and tow bar.
2. Lock drum in tow position.
3. Check tow pin for proper instal-lation
and good condition.
4. USE SAFETY CHAINS when towing.
MAXIMUM TOW SPEED: 50 mph
Improper towing can lead to
damage or injury.
CAUTION(PRECAUCIÓN)
15072
Un remolque incorrecto
puede provocar daños
materiales o lesiones.
Antes del remolque:
1. Revise el funcionamiento de los
engranajes y de la barra de remolque.
2. Bloquee el tambor en la posición de
remolque.
3. Verifique que el pasador de remolque
esté bien instalado y en buen estado.
4. USE CADENAS DE SEGURIDAD al
remolcar la máquina.
MÁX. VELOCIDAD DE REMOLQUE:
80 KPH
STOP
CAUTION(PRECAUCIÓN)
15070
Failure to comply could result in serious bodily injury
El no cumplir con estas instrucciones puede producir como resultado lesiones corporales graves.
Read the operating instructions before operating this piece of equipment.
Lea las Instrucciones Operativas antes de hacer funcionar esta parte del equipo.
Keep unauthorized, inexperienced, untrained people away from this equipment.
Mantenga a las personas no autorizadas y sin entrenamiento alejadas de este equipo.
ROTATING AND MOVING PARTS! Make sure all guards and safety devices are in
place.
¡HAY PIEZAS ROTATIVAS Y MÓVILES! Asegúrese de que todas las guardas y
dispositivos de seguridad estén colocados en sus lugares.
DO NOT RUN this machine in an exnclosed area. The engine produces carbon
monoxide, a POISONOUS gas.
NO HAGA FUNCIONAR esta máquina en una zona encerrada. El motor produce
monóxido de carbono, un GAS VENENOSO.
SHUT OFF the engine before servicing, cleaning or adding fuel to engine or machine.
APAQUE el motor antes de hacerle el servicio, limiarlo o agregarle combustible.
MI
X
IDLE
17129
RALENTÍ
MEZCLA
01554 - Not included
with decal set
17129
15072
15070
17949 - Not included
with decal set

- 3 -
Safety Decals (Decal Set #15074)
WARNING
ENGINE EXHAUST IS HAZARDOUS IF INHALED
USE ONLY IN A WELL VENTILATED AREA
15076
EL GAS DEL ESCAPE DEL MOTOR ES
PELIGROSO SI SE INHALA
USE LA MÁQUINA SÓLO EN UNA ZONA BIEN
VENTILADA
ADVERTENCIA
WARNING
LAS PIEZAS MÓVILES PUEDEN IMPACTAR Y CORTAR
¡MANTENGA ALEJADAS SUS MANOS!
APAGUE EL MOTOR ANTES DEL SERVICIO.
15069
MOVING PARTS CAN CRUSH AND CUT
KEEP HANDS CLEAR!
SHUT OFF ENGINE OR MOTOR
BEFORE SERVICING.
ADVERTENCIA
15069
01554 - Not included with decal set
12500
15076

- 4 -
Safety Decals (Decal Set #15074)
MIXER(MEZCLADORA)
OPERATING INSTRUCTIONS
1. Check oil in engine crankcase.
2. MAKE SURE grid is CLOSED before starting and during operation.
3. Place engage lever in IDLE position before starting engine.
4. Open fuel valve.
5. Close choke on engine. A warm engine may not need to be choked.
6. Open throttle to FAST position.
7. Pull starter rope.
8. After starting, turn choke off, let engine warm up at idle.
9. Open throttle to FAST position, CLOSE SHROUD! Place
engagement lever in MIX position, charge mixer.
10. TO STOP: Place engagement lever in IDLE position, return throttle
to idle, close fuel valve, press stop button.
11. Before towing, check that drum is locked in towing position, and tow
pin is properly installed and in good condition.
MAXIMUM TOW SPEED: 50 MPH
MÁX. VELOCIDAD DE REMOLQUE: 80 KPH
15071
INSTRUCCIONES DE OPERACIÓN
1. Revise el aceite en el cárter del motor.
2. CERCIÓRESE de que la rejilla esté CERRADA antes del arranque y durante la
operación.
3. Coloque la palanca de engranaje en la posición de RALENTÍ antes de arrancar
el motor.
4. Abra la válvula de combustible.
5. Cierre el estrangulador del motor. Si el motor está tibio, puede que no requiera
estrangulamiento.
6. Abra el acelerador a la posición RÁPIDA.
7. Tire de la cuerda de arranque.
8. Tras el arranque, apague el estrangulador y deje que el motor se caliente en
ralentí.
9. Abra el acelerador y póngalo en la posición RÁPIDA, ¡CIERRE LA CUBIERTA!
Coloque la palanca de engranaje en la posición de MEZCLA, cargue la
mezcladora.
10. PARA DETENERLA: Coloque la palanca de engranaje en la posición RALENTÍ,
vuelva el acelerador a ralentí, cierre la válvula de combustible y pulse el botón de
parada.
11. Antes del remolque, verifique que el tambor esté bloqueado en la posición de
remolque, y que el perno esté correctamente instalado y en buen estado.
PUSH
TO
STOP
16546
PULSEPARA
DETENER




12573
16546
19791
WARNING
OPERATION OF THIS EQUIPMENT MAY
CREATE SPARKS THAT CAN START FIRES
AROUND DRY VEGETATION. A SPARK
ARRESTER MAY BE REQUIRED. THE
OPERATOR SHOULD CONTACT LOCAL FIRE
AGENCIES FOR LAWS OR REGULATIONS
RELATING TO FIRE PREVENTION
19791
15071

- 5 -
SPECIFICATIONS
Specifications subject to change without notice
MM60 MM80 MM90
Batch Capacity 6 cu. ft (.17 cu. m) 8 cu. ft (0.23 cu. m) 9 cu. ft (0.26 cu. m)
Batch Size 2 bags 2.5 - 3 bags 3 - 3.5 bags
Gas Engines Honda GX160
Honda GX240 Honda GX240 Honda GX240
Engine Speed 3500 rpm 3300 rpm 3300 rpm
Drivetrain V-belts to Gears V-belts to Gears V-belts to Gears
Electric Motors Baldor 1.5 hp (1-phase) Baldor 2 hp (1-phase) Baldor 3 hp (1-phase)
Motor Draw 115V - 18A
230V - 9A 230V - 14A 230V - 15.5A
Motor Speed 1725 rpm 1725 rpm 1725 rpm
Drivetrain Chain to V-belts to Gears Chain to V-belts to Gears Chain to V-belts to Gears
Axle 46” Solid Axle 46” Solid Axle 46” Solid Axle
Wheels 4.80 x 12
High-Speed
ST175/80D13
High-Speed
ST175/80D13
High-Speed
Size - W x L x H 46 x 64 x 56 in
(117 x 163 x 142 cm)
46 x 67 x 57 in
(117 x 170 x 145 cm)
46 x 71 x 57 in
(117 x 180 x 145 cm)
Weight 650 lbs (295 kg) 715 lbs (324 kg) 730 lbs (331 kg)
Charging Height 47 in (119 cm) 49 in (124 cm) 49 in (124 cm)
MM90
MM60

- 6 -
OPERATION
Introduction
MBW equipment is intended for use in very severe
applications. They are powered by four cycle engines and
are available in different sizes and a selection of engines.
This parts manual contains only standard parts. Variations
of these parts as well as other special parts are not included.
Contact your local MBW distributor for assistance in
identifying parts not included in this manual.
Before Starting & Operating
• REMEMBER! It is the owner’s responsibility to
communicate information on the safe use and proper
operation of this unit to the operators.
• Review ALL of the Safety Precautions listed on page 1 of
this manual.
• Familiarize yourself with the operation of the machine
and confirm that all controls function properly.
• Know how to STOP the machine in case of an
emergency.
• Make sure hands, feet, and clothing are at a safe
distance from any moving parts.
• OIL LEVEL - Check the oil level in the engine. For more
information see “Lubrication” under the respective
engine’s “Owners Manual” or the Maintenance section of
this manual.
• AIR CLEANER - Check to ensure element is in good
condition and properly installed.
• FUEL SUPPLY - The engines on MBW equipment
require an automotive grade of clean, fresh, unleaded
gasoline.
• FUEL FILTER - If clogged or damaged, replace.
Wiring Electric Motor
All electric motors come with a 12” pigtail which must be
wired with a plug for your application.
WARNING
Wiring must be done by certified electrician.
Starting Gas Engine
1. Move mixer engagement lever to “IDLE” position.
2. Open the fuel valve.
3. Pull out the stop switch on the engine shroud.
4. Move the engine throttle lever to the “FAST” position.
5. Choke the engine if necessary. (You may not need to
choke a warm engine).
6. Pull the starter rope repeatedly until engine starts.
7. Move choke lever to open position and throttle lever
to the “IDLE” position
8. Allow engine to warm up for one or two minutes.
Starting Electric Motor
1. Move mixer engagement lever to “IDLE” position.
2. Plug the motor into a suitable power source.
3. Move the switch on the motor to the “ON” position.
Operating
1. Close the engine shroud.
WARNING
Do not operate the mixer with the shroud open.
2. Move engagement lever to the “MIX” position.
3. Add half of the required amount of sand and water for
the batch to be mixed.
4. Add the total required amount of mortar mix.
5. Add the remaining amounts of sand and water and al-
low time to mix properly.
6. Unlock the drum by rotating the locking bar out of en-
gagement with the frame.
7. Tip the drum forward to discharge the batch.
8. Return drum to mixing position and check that it is
locked in place.
9. If another batch is to be mixed, add water for the next
batch.
CAUTION
Always clean the drum after each day’s operation.
See Cleaning, page 8.
Stopping Gas Engine
1. Move mixer engagement lever to the “IDLE” position.
2. Whenever possible it is recommended to let the en-
gine idle before stopping.
3. Push in the engine stop switch on the engine shroud.

- 7 -
4. Close the fuel valve.
Stopping Electric Motor
1. Move mixer engagement lever to the “IDLE” position.
2. Move the switch on the motor to the “OFF” position.
WARNING
Always STOP the engine before adding fuel.
Always STOP the engine or motor before leaving
the equipment unattended for any amount of time.
Always STOP the engine or motor and disconnect
spark plug wire or power cord before making any
repairs or adjustments to the machine.
Towing
1. Stop the engine or electric motor.
2. Close and latch the engine shroud.
3. Rotate the drum into the locked position, and check
that it is locked in place.
4. Secure the mixer hitch and safety chains to the vehi-
cle.
WARNING
Always check that axle, front leg, and tow bar
hardware is tight before towing.
Make sure safety bolt is in place.
Check the condition of the pin on the tow bar and
make sure it is secure.
Remove any loose debris from the mixer before
towing on roads.
Check that safety chains cross each other when
attached.
MAXIMUM TOW SPEED: 50 mph

- 8 -
MAINTENANCE
WARNING
Always exercise the stopping procedure before
servicing or lubricating the unit.
After servicing the unit, replace and fasten all
guards, shields, and covers to their original
positions before resuming operation.
CAUTION
Always verify fluid levels and check for leaks after
changing fluids.
Do not drain oil onto ground, into open streams,
or down sewage drains.
Maintenance Schedule
1. Check all hardware after the first 5 hours of use, then follow the maintenance schedule.
2. Retorque lug nuts, front leg, and axle hardware after the first 25 miles traveled, then follow the maintenance schedule.
Engine Maintenance
Refer to the engine owner’s manual for maintenance
intervals and procedures.
Engine Speed
Engine speed is factory set according to the speeds listed in
the Specifications section of this manual. Refer to the en-
gine owner’s manual for procedure on setting operating
speed if necessary.
Cleaning
Always clean the mixer thoroughly after each day’s
operation. Dried mortar inside the drum can damage the
paddles and shorten the life of the mixer. Additionally, future
batches of mortar can be contaminated if the drum is not
clean.
CAUTION
Do not beat on the drum to clean dried mortar;
this will cause damage to the drum.
WARNING
Always stop engine or motor and disconnect
spark plug wire or power cord before placing
hands or objects inside drum.
Always reconnect safety grid opener to grid after
cleaning drum.
Lubrication
1. Grease both trunnions and pillow blocks daily. There
are two grease fittings on each end of the drum.
2. Apply a light coat of grease to the gear teeth once a
month.
3. Oil all pivot points on the idler assembly once a week.
4. Electric mixers: Oil the drive chain once a week.
SYSTEM MAINTENANCE EACH USE EVERY 40
HOURS
EVERY 100
HOURS YEARLY
Axle Check tire pressure X
Grease wheel bearings X
Drivetrain Inspect drive belts for excessive wear X
Oil electric motor drive chain X
Grease bull gear teeth X
Drum Grease trunnions & pillow blocks X
Engine Refer to engine operator/owner manual X
Hardware Check and tighten all hardware 1,2 X

- 9 -
Belt Guides
Belt driven models are equipped with guides to ensure prop-
er operation. If the paddles do not stop when in the “IDLE”
position, follow these steps to adjust them.
1. With engine stopped, move the engagement lever to
the “MIX” position.
2. Loosen the nuts on the 3-1/4” long bolt (Figure 1, #1)
below the drive belts. Move the bolt to within 1/16” of
the belts and retighten the nuts.
3. Loosen nut on the 3/4” long bolt (Figure 1, #2) located
in the slot on the idler arm.
4. Move engagement handle to “IDLE” position and
start engine.
5. Move engagement handle towards “MIX” position un-
til belts stop moving.
6. Slide 3/4” bolt and nut until they contact the edge of
the frame and tighten.
Greasing Wheel Bearings
1. Jack the rear end of the mixer and support by side
rails so that mixer is stable.
2. Remove the wheel.
3. Remove the dust cover.
4. Remove the cotter pin from the spindle nut.
5. Unscrew the spindle nut.
6. Remove the hub from the spindle, being careful not
to allow the outer bearing cone to fall out. The inner
bearing cone will be retained by the seal.
7. Remove the grease seal.
8. Wash all grease and oil from the bearing cones and
inspect each roller. If any pitting, spalling, or
corrosion is present, then the bearing cup and cone
must be replaced.
9. Pack the entire bearing with grease, apply a light coat
of grease to the bearing cup, and install.
10. Tap a new grease seal into place with a clean block.
11. Slide the hub onto the spindle.
12. While rotating the hub slowly, tighten the spindle nut
to approximately 50 lb-ft.
13. Loosen the spindle nut, but DO NOT rotate the hub.
14. Finger tighten the spindle nut until snug.
15. Back the spindle nut out slightly until the first
castellation lines up with the cotter pin hole and insert
the cotter pin.
16. Bend over the cotter pin legs to secure the nut.
17. Tap the dust cover into the hub.
18. Install wheel and torque lug nuts to 90 lb-ft.
GREASE DAILY
OIL WEEKLY
2
1
FIGURE 1

- 10 -
SERVICE
Assembly and disassembly should be performed by a
service technician who has been factory trained on MBW
equipment. The unit should be clean and free of debris.
Pressure washing before disassembly is recommended.
• Prior to assembly, wash all parts in a suitable cleaner or
solvent.
• Check moving parts for wear and failure. Refer to the
Replacement section in this manual for tolerance and
replacement cycles.
• All shafts and housings should be oiled prior to pressing
bearings. Also, ensure that the bearings are pressed
square and are seated properly.
• All gaskets and seals should be replaced after any
disassembly.
Torque Chart
Engine Shroud Removal
Refer to Drivetrain Assembly, page 16.
1. Disconnect wiring harness (#18) from engine by un-
screwing ring terminal from engine and unplugging
bullet connector.
2. Remove automatic safety grid lifter from safety grid.
3. Remove four bolts (#25), washers (#27), and lock-
nuts (#26) securing shroud to frame.
4. Carefully lift shroud straight up to avoiding damaging
engine or drive components. Approximate weight is
85 pounds.
Engine Shroud Installation
Refer to Drivetrain Assembly, page 16.
1. Lift shroud over engine and drive components and
lower it straight down onto frame. Hold grid opener
out of the way while lowering.
2. Align shroud with edges of frame and tighten bolts
(#25), washers (#27), and locknuts (#26) in place.
3. Lift grid opener into position and pin to safety grid.
4. Connect wiring harness (#18) to engine by grounding
the ring terminal to the engine and inserting the bullet
connector into the splice terminal.
Drum Removal
Refer to Drum Assembly, page 14.
1. Remove engine shroud before attemping to remove
mixing drum.
2. Mark the front and rear pillow block (#5) locations on
the frame to aid in the alignment during installation.
3. Remove all four bolts (#25), washers (#28 & #10),
lockwashers (#27), and locknuts (#26) holding drum
pillow blocks to frame.
4. If lifting drum by hoist, wrap chain around main shaft
and pass chain through paddles to stabilize. If lifting
drum by forklift, place blocks on forks to prevent drum
from rolling. Approximate weight is 250 to 300
pounds, depending on model.
Drum Installation
Refer to Drum Assembly, page 14.
1. Lower drum onto frame supports. Pillow blocks (#5)
should be snug to trunnions (#8) to eliminate
excessive endplay.
SIZE GRADE 2 GRADE 5 GRADE 8
1/4-20 49 in•lbs 76 in•lbs 9 ft•lbs
1/4-28 56 in•lbs 87 in•lbs 10 ft•lbs
5/16-18 8 ft•lbs 13 ft•lbs 18 ft•lbs
5/16-24 9 ft•lbs 14 ft•lbs 20 ft•lbs
3/8-16 15 ft•lbs 23 ft•lbs 33 ft•lbs
3/8-24 17 ft•lbs 26 ft•lbs 37 ft•lbs
7/16-14 24 ft•lbs 37 ft•lbs 52 ft•lbs
7/16-20 27 ft•lbs 41 ft•lbs 58 ft•lbs
1/2-13 37 ft•lbs 57 ft•lbs 80 ft•lbs
1/2-20 41 ft•lbs 64 ft•lbs 90 ft•lbs
9/16-12 53 ft•lbs 82 ft•lbs 115 ft•lbs
5/8-11 73 ft•lbs 112 ft•lbs 159 ft•lbs
5/8-18 83 ft•lbs 112 ft•lbs 180 ft•lbs
3/4-16 144 ft•lbs 200 ft•lbs 315 ft•lbs
1-8 188 ft•lbs 483 ft•lbs 682 ft•lbs
1-14 210 ft•lbs 541 ft•lbs 764 ft•lbs
1-1/2-6 652 ft•lbs 1462 ft•lbs 2371 ft•lbs
M 6 3 ft•lbs 4 ft•lbs 7 ft•lbs
M 8 6 ft•lbs 10 ft•lbs 18 ft•lbs
M 10 10 ft•lbs 20 ft•lbs 30 ft•lbs
CONVERSIONS
in•lbs x 0.083 = ft•lbs
ft•lbs x 12 = in•lbs
ft•lbs x 0.1383 = kg•m
ft•lbs x 1.3558 = N•m

- 11 -
2. Check alignment between bull gear and pinion.
Gears must be parallel and in-line. Adjust drum loca-
tion if necessary.
3. Bolt pillow blocks to frame using four bolts (#25),
washers (#28 & #10), lockwashers (#27), and lock-
nuts (#26).
4. Dump drum to check for binding. If binding is noticed,
loosen bolts and realign pillow blocks.
5. Loosen intermediate shaft bolts and fine tune gear
alignment if necessary. Set backlash in gears to
0.010” before tightening. NOTE: It may be necessary
to re-adjust alignment of drum or engine so that both
sheaves line up properly.
6. Reinstall the engine shroud.
Drum Bearing & Seals Replacement
Refer to Drum Assembly, page 14.
1. Remove mixing drum from mixer. See Drum
Removal, page 10.
2. Loosen set screws and remove bull gear from main
shaft. Use a puller if necessary.
3. Slide pillow blocks (#5) off of trunnions (#8).
4. Loosen set screw and remove locking collars from
trunnion bearings (#4) by rotating the collars against
the mixing direction of the paddles.
5. Remove four bolts (#19) and nuts (#22) holding each
trunnion to the drum.
6. While supporting the main shaft, slide the trunnion off
of each end.
7. Pull the triple seal kit (#9) out of the back side of each
trunnion and discard.
8. Remove the retaining ring (#7) from each trunnion.
9. Remove the ball bearing and grease shield (steel
washer) from the front side of each trunnion.
10. Inspect the bearings, and replace both if needed.
11. Thoroughly clean all grease from the trunnions.
12. Apply a medium strength thread locking compound to
each outer bearing surface and reinstall the bearings
and grease shields into the trunnions.
13. Reinstall the retaining rings.
14. Install new seal kits into the back side of each
trunnion in the following order: Steel Washer, Soft
Black Seal, Steel Washer, Soft Black Seal, Steel
Washer, Hard Red Seal.
15. Slide trunnions onto each shaft end and bolt in place.
16. Slide bearing locking collar onto front shaft end and
align shaft flush with collar.
17. Lock collar in place by driving in the mixing direction.
18. Tighten set screw using a medium strength thread
locking compound and torque to 20 ft. lbs.
19. Repeat process for rear bearing.
20. Begin pumping grease into trunnion cavity while
rotating main shaft back and forth. NOTE: If grease
comes out through ball bearing seals, check that
grease shield (steel washer) is installed and that
bearing is fully seated in trunnion and cannot move.
21. Continue pumping grease until drum seals “pop out”
into drum. Clean any excess grease from inside
drum.
22. Slide pillow blocks onto trunnions and grease until a
film of grease is seen all around the trunnion.
23. Reinstall the bull gear. Tighten set screws using a
medium strength thread locking compound.
24. Reinstall mixing drum onto frame. See Drum
Installation, page 10.
Engine Removal
Refer to Drivetrain Assembly, page 16.
1. Disengage mixer by moving engagement handle to
“IDLE” position.
2. Disconnect wiring harness (#18) from engine by un-
screwing ring terminal from engine and unplugging
bullet connector.
3. Remove four bolts, washers, lockwashers, and nuts
holding engine to frame.
4. Tilt engine and remove drive belts.
5. Lift engine off of frame.
Engine Installation
Refer to Drivetrain Assembly, page 16.
1. Set engine onto frame and line up with holes.
2. Disengage idler by moving engagement handle to
“IDLE” position and install both drive belts.
3. Install four bolts, washers, lockwashers, and nuts to
secure engine. Check for proper alignment between
both sheaves (#4 & #5) with a straightedge before
tightening hardware.
4. Connect wiring harness (#18) to engine by grounding
the ring terminal to the engine and inserting the bullet
connector into the splice terminal.

- 12 -
Parts Replacement Cycles and Tolerances
Bearings Replace anytime a bearing is rough, binding, discolored or removed from housing or
shaft.
Clutch Replace clutch if it does not disengage below 1800 rpm.
Engine Components Refer to your engine manufacturer’s Owner’s Manual.
Hardware Replace any worn or damaged hardware as needed. Replacement hardware should
be grade 5 and zinc plated unless otherwise specified.
Safety Decals Replace if they become damaged or illegible.
Seals & Gaskets Replace if a leak is detected and at every overhaul or teardown.
V-Belts Replace if cracked, torn, or stretched to the point the belt won’t tension properly.

- 13 -
MBW, Inc.
250 Hartford Rd • PO Box 440
Slinger, WI 53086-0440
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.mbw.com
MBW (UK) Ltd.
Units 2 & 3 Cochrane St.
Bolton, England
BL3 6BN
Phone: [phone]
Fax: [phone]
Contact Information
MBW FRANCE S.A.R.L.
Z.A. d’Outreville
11 rue Jean Baptiste Néron,
60540 BORNEL
FRANCE
Phone: [phone]
Fax: [phone]
Email: [email protected]
REPLACEMENT PARTS
The warranty is stated in this book on page 28. Failure to
return the Warranty Registration Card renders the warranty
null and void.
MBW, Inc. has established a network of reputable distribu-
tors with trained mechanics and full facilities for mainte-
nance and rebuilding, and to carry an adequate parts stock
in all areas of the country. Their sales engineers are avail-
able for professional consultation. If you cannot locate an
M-B-W distributor in your area, contact MBW, Inc. or one of
our Sales Branches listed below.
When ordering replacement parts, be sure to have the fol-
lowing information available:
• Model and Serial Number of machine when ordering
M-B-W parts
• Model and Serial Number of engine when ordering
engine parts
• Part Number, Description, and Quantity
• Company Name, Address, Zip Code, and Purchase
Order Number
• Preferred method of shipping
REMEMBER - You own the best! If repairs are needed,
use only M-B-W parts purchased from authorized
M-B-W distributors.
The unit’s serial number can be found in the following loca-
tions:
• The model/serial number decal is located on the front
drum support, below the pillow block.
• The serial number is stamped on the mixer frame
between the shroud mounting holes.
Write Model Number here
Write Serial Number here
DECAL
LOCATION
STAMPED
LOCATION

- 14 -
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

 








  

  









Drum Assembly

- 15 -
ITEM PART NO. DESCRIPTION
MM60 MM80 MM90
1. 01056 HAIRPIN, 1/8” x 2-3/8” LONG 1 1 1
2. 01177 GREASE FITTING, 45 4 4 4
3. 01280 SOCKET HEAD SHOULDER SCREW, 3/8” x 3/8” 1 1 1
4. 01550 BALL BEARING (Includes seal & locking collar) 2 2 2
5. 05002 PILLOW BLOCK 2 2 2
6. 05082 BRACKET, GRID SUPPORT 2 2 2
7. 05475 RING, RETAINING 2 2 2
8. 05665 TRUNNION 2 2 2
9. 05918 SEAL KIT 2 2 2
10. 06327 WASHER 4 4 4
11. 16737 HANDLE, DUMP 1 1 1
12. 16806 GRID, MM60 1
16807 GRID, MM80 1
16781 GRID, MM90 1
13. 16832 OPENER, GRID, MM60 1
16782 OPENER, GRID 1 1
14. 17076 DRUM, MM60 1
17077 DRUM, MM80 1
17078 DRUM, MM90 1
15. 17079 LOCKING BAR 1 1 1
16. 18903 GRIP, DUMP HANDLE 1 1 1
17. F051808HCS HEX HEAD CAP SCREW, 5/16-18 x 1” 4 4 4
18. F0518ELN ELASTIC LOCKNUT, 5/16-18 5 5 5
19. F061606HCS HEX HEAD CAP SCREW, 3/8-16 x 3/4” 1 1 1
20. F061610CB CARRIAGE BOLT, 3/8-16 x 1-1/4” 8 8 8
21. F061610HCS HEX HEAD CAP SCREW, 3/8-16 x 1-1/4” 2 2 2
22. F0616ELN ELASTIC LOCKNUT, 3/8-16 2 2 2
23. F0616HN HEX NUT, 3/8-16 8 8 8
24. F06PW WASHER, 3/8” SAE 1 1 1
25. F06SW WASHER, 3/8” 1 1 1
26. F081314HCS HEX HEAD CAP SCREW, 1/2-13 x 1-3/4” 4 4 4
27. F0813ELN LOCKNUT, 1/2-13 NYLOC ZP 4 4 4
28. F08SW WASHER, 1/2” 5 5 5
REPLACEMENT KITS
01427 GREASE FITTING CAPS (Set of 12) 1 1 1
06090 TRUNNION ASSEMBLY (Includes 2,4,7-9) 2 2 2
17230* DRUM ASSEMBLY, MM60 1
17231* DRUM ASSEMBLY, MM80 1
17232* DRUM ASSEMBLY, MM90 1
* Includes trunnions, pillow blocks, shaft, paddles, & grid

- 16 -
5.5 HP HONDA
36
35
39
38
37
34
31
33
32
1
25
5
2
2
3
20 13
14
21
24
22
9
15
12
11
19
18
30
29
28
23
4
6
26
17
6
8
10
16
729
30
28
27
Drivetrain Assembly

- 17 -
ITEM PART NO. DESCRIPTION
MM60 MM80 MM90
1. 01159 KEY, 3/8” SQUARE x 3” LONG 1 1 1
2. 01160 KEY, 1/4” SQUARE x 2” LONG 2 2 2
3. 01561 SHEAVE, 2A - 4” (8 hp Honda) 1 1 1
4. 01562 SHEAVE, 2A - 8” 1 1 1
5. 01563 SPUR GEAR, 84 TOOTH 1 1 1
6. 05586 BEARING, PILLOW BLOCK 2 2 2
7. 05692 SHIM, MIXER (AS REQUIRED) 111
8. 05741 V-BELT, AX-38 2 2 2
9. 07592 TERMINAL, SPLICE 1 1 1
10. 07755 ENGINE, HONDA 8 HP 1 1 1
11. 16750 BUMPER, RUBBER 1 1 1
12. 16783 SWITCH 1 1 1
13. 16813 LATCH, METAL 2 2 2
14. 16816 CATCH PLATE, METAL LATCH 2 2 2
15. 16820 HARNESS, WIRING 1 1 1
16. 17135 SHROUD ASSEMBLY (Includes 11,13,14 & 18-21) 1 1 1
17. 17404 PINION GEAR SHAFT, 12 TOOTH 1 1 1
18. F0324HN HEX NUT, #10-24 1 1 1
19. F03LW LOCKWASHER, #10 1 1 1
20. F042004HCS HEX HEAD CAP SCREW, 1/4-20 x 1/2” 8 8 8
21. F0420FN FLANGE NUT, 1/4-20 8 8 8
22. F051808HCS HEX HEAD CAP SCREW, 5/16-18 x 1” 4 4 4
23. F0518ELN ELASTIC LOCKNUT, 5/16-18 4 4 4
24. F05SW WASHER, 5/16” 4 4 4
25. F061610SHS SQUARE HEAD SET SCREW, 3/8-16 x 1-1/4” 2 2 2
26. F061612CB CARRIAGE BOLT, 3/8-16 x 1-1/2” 4 4 4
27. F061616HCS HEX HEAD CAP SCREW, 3/8-16 x 2” 4 4 4
28. F0616HN HEX NUT, 3/8-16 8 8 8
29. F06LW LOCKWASHER, 3/8” 8 8 8
30. F06SW WASHER, 3/8” 12 12 12
5.5 HP HONDA ENGINE OPTION
31. 00032 KEY, 3/16” SQUARE x 1-5/8” LONG 1
32. 05606 V-BELT, COGGED (AX-37) - S/N 7010432 and above 2
05741 V-BELT, COGGED (AX-38) - S/N 7010431 and below 2
33. 15223 SHEAVE, 2A - 4” 1
34. 15224 ENGINE, HONDA 5.5 HP 1
35. 17703 SPACER, 5.5 HP ENGINE - S/N 7010432 and above 2
36. F051822HCS HEX HEAD CAP SCREW, 5/16-18 x 2-3/4” 4
37. F0518HN HEX NUT, 5/16-18 4
38. F05LW LOCKWASHER, 5/16” 4
39. F05SW WASHER, 5/16” 8
SERVICE PARTS
06028 SHAFT ASSEMBLY, INTERMEDIATE (Includes 6 & 17)