Page 1
OPERATOR MANUAL
MODELS: 2CM
CONCRETE MIXER
A 100% employee-owned American manufacturer
REVISION: A 05/99 P/N 56396
Page 2
TECHNICAL DATA
Stone 2CM Mixer – Specifications
Dimensions
Operating Wt.
Specifications
2CM
135 lbs. (w/motor)
61.2 kg
Batch Capacity
(Bags)
Batch Capacity
(cu. ft.)
Total Volume
L x W x H
Power Source
1/4 bag
2 cu. ft. / .06 cu. m.
4.1 cu. ft. / .12 cu. m.
42 x 37 x 54 (in)
106.7 x 94 x 137.2 (cm)
1/4 hp / 1.9 kW Electric
- 6 -
Page 3
TECHNICAL DATA
Imperial Torque Chart
SAE GRADE 5
Coarse Thread, Zinc-Plated
SIZE TORQUE SIZE TORQUE
ft. lbs. Nm ft. lbs. Nm
1/4 - 20 (.250) 681/4 - 20 (.250) 912
5/16 - 18 (.3125) 13 18 5/16 - 18 (.3125) 18 24
3/8 - 16 (.375) 23 31 3/8 - 16 (.375) 33 45
7/16 - 14 (.4375) 37 50 7/16 - 14 (.4375) 52 70
1/2 - 13 (.500) 57 77 1/2 - 13 (.500) 80 108
9/16 - 12 (.5625) 82 111 9/16 - 12 (.5625) 115 156
5/8 - 11 (.625) 112 152 5/8 - 11 (.625) 159 215
3/4 - 10 (.750) 200 271 3/4 - 10 (.750) 282 382
7/8 - 9 (.875) 322 436.5 7/8 - 9 (.875) 454 615
1 - 8 (1.000) 483 655 1 - 8 (1.000) 682 925
Coarse Thread, Zinc-Plated
SAE GRADE 5
Fine Thread, Zinc-Plated
SIZE TORQUE SIZE TORQUE
ft. lbs. Nm ft. lbs. Nm
1/4 - 28 (.250) 7101/4 - 28 (.250) 10 14
5/16 - 24 (.3125) 14 19 5/16 - 24 (.3125) 20 27
3/8 - 24 (.375) 26 35 3/8 - 24 (.375) 37 50
7/16 - 20 (.4375) 41 56 7/16 - 20 (.4375) 58 79
1/2 - 20 (.500) 64 87 1/2 - 20 (.500) 90 122
9/16 - 18 (.5625) 91 123 9/16 - 18 (.5625) 129 175
5/8 - 18 (.625) 128 173 5/8 - 18 (.625) 180 244
3/4 - 16 (.750) 223 302 3/4 - 16 (.750) 315 427
7/8 - 14 (.875) 355 481 7/8 - 9 (.875) 501 679
1 - 12 (1.000) 529 717 1 - 12 (1.000) 746 1011
1 -14 (1.000) 541 733 1 -14 (1.000) 764 1036
SAE GRADE 8
SAE GRADE 8
Fine Thread, Zinc-Plated
t-chrt_i.doc
- 7 -
Page 4
TECHNICAL DATA
Property Class 8.8
ZINC-PLATED
SIZE Nm ft. lbs. Nm ft. lbs.
M6 9.9 7 NA NA
M8 24 18 25 18
M10 48 35 49 36
M12 83 61 88 65
M14 132 97 140 103
M16 200 148 210 155
M20 390 288 425 313
M24 675 498 720 531
Property Class 10.9
ZINC-PLATED
SIZE Nm ft. lbs. Nm ft. lbs.
M6 14 10 NA NA
M8 34 25 35 26
M10 67 49 68 50
M12 117 86 125 92
M14 185 136 192 142
M16 285 210 295 218
M20 550 406 600 443
M24 950 701 1000 738
Coarse Th read Fine Thread
Coarse Th read Fine Thread
Metric Torque Chart
Property Class 12.9
ZINC-PLATED
SIZE Nm ft. lbs. Nm ft. lbs.
M6 16.5 12 N A N A
M8 40 30 42 31
M10 81 60 82 60
M12 140 103 150 111
M14 220 162 235 173
M16 340 251 350 258
M20 660 487 720 531
M24 1140 841 1200 885
Conversion Factor: 1 ft. lb. = 1.3558 Nm
Coarse Th read Fine Thread
- 8 -
Page 5
HEALTH & SAFETY
Safety Precautions
Before using this equipment, study this entire manual
to become familiar with its operation. Do not allow
untrained or unauthorized personnel, especially
children, to operate this equipment. Use only factory
authorized parts for service.
FOLLOW SAFETY INSTRUCTIONS
Read all safety messages and decals in this manual and on your
machine safety signs carefully. Keep decals in good condition.
Replace missing or damaged decals. Be sure new equipment
components and repair parts include the current safety signs.
Replacement safety signs and decals are available through your dealer.
Learn how to operate the machine and how to use controls properly.
Do not let anyone operate without instruction.
Keep your machine in proper working condition. Unauthorized
modifications to the machine may impair the function and/or safety
and affect machine life.
If you do not understand any part of this manual and need assistance,
contact your dealer.
When warning decals are destroyed or missing, contact
the Manufacturer immediately at 1-800-888-9926 for
replacement. For the safety of yourself and others, it is
imperative that the following rules are observed. Failure
to do so may result in serious injury or death.
This notation appears before warnings in the text. It means that the
step which follows must be carried out to avoid the possibility of
personal injury or death. These warnings are intended to help the
technician avoid any potential hazards encountered in the normal
service procedures. We strongly recommend that the reader takes
advantage of the information provided to prevent personal injury or
injury to others.
UNDERSTAND SIGNAL WORDS
A signal word DANGER, WARNING, or CAUTION is used with
the safety-alert symbol. DANGER identifies the most serious hazards.
DANGER or WARNING safety signs are located near specific
hazards. General precautions are listed on CAUTION safety signs.
CAUTION also calls attention to safety messages in this manual.
- 9 -
Page 6
HEALTH & SAFETY
USE COMMON SENSE WHEN HANDLING FUELS
Transport and handle fuel only when contained in approved safety
container.
Do not smoke when refueling or during any other fuel handling
operation.
Do not refuel while the engine is running or while it is still hot.
If fuel is spilled during refueling, wipe it off of the engine
immediately and discard the rag in a safe place.
Do not operate the equipment if fuel or oil leaks exist - repair
immediately.
Never operate this equipment in an explosive atmosphere.
Safety Precautions
WARNING
Always use the proper size grounded extension cord, conforming to
the National Electric Code and Local Ordinances.
Inspect all extensions and electrical cords for cuts, frayed wire and
broken connectors before use. Do not use cords if not in good
condition.
Do not route extension cords through standing water.
Do not operate the mixer in standing water.
When cleaning the mixer, never spray water on the electric motor.
Never leave mixer unattended while running.
Mix only concrete.
- 10 -
Page 7
HEALTH & SAFETY
Never perform any work on the mixer while it is running.
Before working on the mixer, stop the engine and disconnect the
spark plug wire(s) to prevent accidental starting. On electric models,
disconnect the electric cord at the mixer.
Keep cowl closed and latched during the operation, close and latch
cowl immediately after starting.
Keep hands, clothing and jewelry away from all moving parts.
Keep all guards in place, including drum guards.
Never place your hands or any solid object into the drum while the
mixer is in operation.
WEAR PROTECTIVE CLOTHING
Safety Precautions
Wear close fitting clothing and safety equipment appropriate to the
job.
Prolonged exposure to loud noise can cause impairment or loss of
hearing.
Wear a suitable hearing protective device such as earmuffs or
earplugs to protect against objectionable or uncomfortable loud
noises.
Operating equipment safely requires the full attention of the
operator. Do not wear radio or music headphones while operating
machine.
PREPARE FOR EMERGENCIES
Be prepared if a fire starts.
Keep a first aid kit and fire extinguisher handy.
Keep emergency numbers for doctors, ambulance service, hospital,
and fire department near your telephone.
- 11 -
Page 8
HEALTH & SAFETY
Warning-Eye Protection
• Always wear splash goggles when operating mixer.
HOT SURFACES
Avoid contact with hot exhaust systems and engines.
Allow all components in the engine compartment to cool before
performing any service work.
Safety Precautions
Starting fluid (ether) is highly flammable, do not use or an
explosion or fire may result.
Never operate unit in a poorly ventilated or enclosed area.
Avoid prolonged breathing of exhaust gases.
Engine exhaust fumes can cause sickness or death.
- 12 -
Page 9
HEALTH & SAFETY
PRACTICE SAFE MAINTENANCE
Understand service procedure before doing work. Keep area clean
and dry.
Never lubricate, service or adjust machine while it is moving. Keep
hands, feet, and clothing from power-driven parts. Disengage all
power and operate controls to relieve pressure. Lower equipment to
the ground. Stop the engine. Remove the key. Allow machine to
cool.
Securely support any machine elements that must be raised for
service work.
Keep all parts in good condition and properly installed. Repair
damage immediately. Replace worn or broken parts. Remove any
buildup of grease, oil, or debris.
Disconnect battery ground cable (-) before making adjustments on
electrical systems or welding on machine.
Safety Precautions
DISPOSE OF WASTE PROPERLY
Improperly disposing of waste can threaten the environment and
ecology. Potentially harmful waste used with equipment include
such items as oil, fuel, coolant, brake fluid, filters, and batteries.
Use leakproof containers when draining fluids. Do not use food or
beverage containers that may mislead someone into drinking from
them.
Do not pour waste onto the ground, down a drain, or into any water
source.
Air conditioning refrigerants escaping into the air can damage the
Earths atmosphere. Government regulations may require a certified
air conditioning service center to recover and recycle used air
conditioning refrigerants.
Inquire on the proper way to recycle or dispose of waste from your
local environmental or recycling center.
SAFETY DECALS - FOR THE SAFETY OF YOURSELF AND OTHERS REPLACE ANY
DAMAGED OR MISSING SAFETY DECALS.
Warning Decal (SN-92) P/N 55011
Safety Instruction Decal (SN-67A) P/N 55046
Warning Decal (SN-8) P/N 55127
Safety Chain Decal (Front Post, SN-66) P/N 55121
- 13 -
Page 10
OPERATION
2CM
BEFORE STARTING
The 2CM mixer is shipped completely assembled and
ready for operation.
Plug into any 115 single phase, 60-cycle, fused outlet.
Check belt tension and tracking and drum rotation.
Drum should rotate counter-clockwise. If rotation is
reversed, disconnect power cord and remove wiring
junction plate from motor. Rewire per instructions on
back of plate. Replace plate before connecting power
cord.
WARNING
TO PREVENT ANY ACCIDENTAL STARTING,
MAKE SURE THE ELECTRIC CORD IS
DISCONNECTED.
HARDWARE
Check all hardware on mixer before starting. Consult
the TORQUE CHART section of this manual and
tighten any loose hardware accordingly.
TO START THE ELECTRIC MOTOR
is now ready for the addition of the concrete mix. For
best results proceed as follows:
1. Pour the required amount of water into
drum.
2. Add the required amount of gravel.
3. Add the required amount of cement.
4. Add the required amount of sand.
By adding the water and gravel first the drum will be
kept clean and a good tumbling action will be
maintained when cement and sand are added.
Discharge the mixer and immediately pour in the
required water for the next batch.
CAPACITIES
Total Drum 4.1 cu. ft.
Volume
Max Batch 2 cu. ft.
Size*
Use the proper size (3) wire (grounded) extension cord,
conforming to the National Electric Code and Local
Ordinances. DO NOT use (2) wire extension cords.
Check any extension cord which you plan on using
carefully for broken connectors, bare wires, or
damaged insulation. DO NOT use any cord found to
be in poor condition. Make sure the extension cord is
not routed through standing water and that all
connections are tight. Use the shortest extension cord
possible. Turn motor on.
TO STOP THE ELECTRIC MOTOR
Disconnect the power cord.
OPERATION
Start the motor as instructed.
With drum operating between 25-30 RPMs, the mixer
* Maximum batch size depends on mix and type of
aggregate used.
SAMPLE MIX
Volume relationship of 1:1-1/4:3 (Cement: Sand:
Gravel) mix. The mix volume may vary depending on
aggregate used.
Mix Volume
Cu. Ft. 12
Cement
(bags) 1/6 1/3
Water (gal.) 3-1/2 7
Sand (gal./
shovels) 36
Gravel (gal./
shovels) 48
- 14 -
Page 11
OPERATION
CLEANING
For consistent performance, long life, and continued
high-quality mixing of cement, thoroughly clean the
mixer inside and out at the end of each days operation.
The drum may be scoured by 2-minute operation with
gravel and water mixture. Discharge, then hose down
drum inside and outside. Keep mixer clean.
WARNING
NEVER POUR OR SPRAY WATER ON THE
MOTOR.
NEVER PLACE HANDS OR ANY OBJECT INTO
THE DRUM WHILE THE MOTOR IS RUNNING.
ALWAYS DISCONNECT THE ELECTRIC CORD
WHEN CLEANING INSIDE THE DRUM.
2CM
MAINTENANCE AND LUBRICATION
To get long and trouble-free service from this mixer, it
is essential that you perform periodic maintenance.
Adjust belt as required by loosening the (4) motor
mount bolts and moving motor as necessary. Retighten
these bolts after adjustment. The belt should deflect
approximately 1/2 - 3/4 inches at the halfway point
when slight pressure is applied.
Grease weekly through the (2) fittings provided. Use
any Grade #1 lithium based grease. DO NOT grease
or oil the gear. This will attract sand and cause
excessive wear.
- 15 -
Loading...