Stone 1050PM Guide

PLASTER/MORTAR MIXER
A 100% employee-owned American manufacturer
SERVICE/PARTS MANUAL
MODELS: 1050PM, 1265PM, 1285PM &
1650PM
REVISION: C 02/2002 P/N 56369

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Table of Contents
TABLE OF CONTENTS ................................................................................................................ 3-4
FOREWORD / SERVICE INFORMATION ................................................................................ 5
Limited WARRANTY ..................................................................................................................... 6
TECHNICAL DATA ....................................................................................................................... -10
Specifications .............................................................................................................................. 7
Imperial Torque Chart ................................................................................................................. 8
Metric Torque Chart .................................................................................................................... 9
Hardware Identification .............................................................................................................. 0
HEALTH & SAFETY ..................................................................................................................... 11-15
Safety Training ............................................................................................................................
Safety Precautions ....................................................................................................................... 2- 5
MAINTENANCE............................................................................................................................. 16-24
Maintenance Tasks ...................................................................................................................... 6
Hardware ..................................................................................................................................... 7
Fuel ............................................................................................................................................. 7
Location and Use of Controls ..................................................................................................... 7
Wheel Bearing Lubrication ......................................................................................................... 8
Wheel Bearing Adjustment ......................................................................................................... 8
Hardware ..................................................................................................................................... 8
Cleaning ...................................................................................................................................... 9
Safety Chain / Towing................................................................................................................. 9-20
Bearing and Seal Installation ...................................................................................................... 2
Bull Gear Assembly .................................................................................................................... 22
Maintenance Chart ...................................................................................................................... 23
Gearcase Clutch Assembly ......................................................................................................... 24
1050PM, 1265PM,
1285PM, 1650PM

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Table of Contents
EXPLODED DIAGRAM AND PARTS LIST ............................................................................... 25- 1
Frame and Drum Assembly - 050PM........................................................................................ 26-29
Frame and Drum Assembly - 265PM, 285PM and 650PM .................................................. 30-33
Paddle Assembly - 050PM ........................................................................................................ 34-35
Paddle Assembly - 265PM and 285PM .................................................................................. 36-37
Paddle Assembly - 650PM ........................................................................................................ 38-39
Electric Motor Drive Train - 050PM ........................................................................................ 40-43
Electric Motor Drive Train - 265PM ........................................................................................ 44-45
Gas Engine Drive Train 050PM/ 265PM ................................................................................. 46-49
Clutch Assembly - 050PM ....................................................................................................... 50-5
Clutch Assembly - 265PM ....................................................................................................... 52-53
Gearcase Assembly - 285PM and 650PM ............................................................................... 54-59
Clutch Assembly - 285PM and 650PM.................................................................................. 60-6
Spring Axle Assembly ................................................................................................................. 62-63
Trialer Lights Assembly Option .................................................................................................. 64-65
Exhaust Systems ......................................................................................................................... 66-67
Electric Wiring ............................................................................................................................ 68-69
Decal Identification ..................................................................................................................... 70-7
CALIFORNIA PROPOSITION 65 WARNING ........................................................................... IBC
MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING PATENTS AND OTHERS PEND-
ING: 3 61058, 3905519, 3931 48, 3932006, 4043540, 4180281.
1050PM, 1265PM,
1285PM, 1650PM

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Technical Data 1050PM, 1265PM, 1285PM &
1650PM – Specifications
MODEL
Dimensions
Operating Wt.
lbs. / kg
Batch Capacity
Bags
Batch Capacity
cu. ft. / m3
Total Volume
cu. ft. / m3
Shipping Dimensions
L x W x H / cm
Engine
Drive & Clutch
STONE
1650PM
1267 / 574,7
4 ½ - 5 ½
16 / ,45
19.5 / ,55
81 x 56 x 59
233,7 x 142,2 x 150
11 hp Robin,
11 hp Honda,
18 hp B&S I/C,
5 hp Electric
Totally enclosed
gear drive & clutch
(no chain or belt)
STONE
1285PM
1120 / 508
3 - 4
12 / ,34
14.8 / ,42
81 x 56 x 59
205,7 x 142,2 x 150
11 hp Robin,
11 hp Honda,
18 hp B&S I/C,
5 hp Electric
Totally enclosed
gear drive & clutch
(no chain or belt)
STONE
1265PM
1085 / 492,1
3 - 4
12 / ,34
14.8 / ,42
81 x 56 x 59
205,7 x 142,2 x 150
10 hp B&S,
11 hp Honda,
3 hp Electric
V-belts to Gears
Front Post Hand Clutch
STONE
1050PM
875 / 396,9
2 ½ - 3 ½
10 / ,28
11.5 / ,33
75 x 56 x 59
190,5 x 142,2 x150
10 hp B&S,
8.5 hp Robin,
11 hp Honda,
8 hp B&S I/C,
8 hp B&S I/P
3 hp Electric
V-belts to Gears
Front Post Hand Clutch
Mortar Mixer Features: Bag Splitter, Safety Guard, Patented Guard Lifter, Safety Chain

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Technical Data Torque Chart - Imperial
SAE GRADE 5
Coarse Thread, Zinc-Plated SAE GRADE 8 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
SAE GRADE 5
Fine Thread, Zinc-Plated SAE GRADE 8 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
document in lgpm.p65

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Technical Data
Property Class 8.8
ZINC-PLATED Coarse Thread Fine Thread
SIZE Nm ft. lbs. Nm ft. lbs.
M6 9.9 7 10 7
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 Coarse Thread Fine Thread
SIZE Nm ft. lbs. Nm ft. lbs.
M6 14 10 14 10
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
Property Class 12.9
ZINC-PLATED Coarse Thread Fine Thread
SIZE Nm ft. lbs. Nm ft. lbs.
M6 16.5 12 16.5 12
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
Torque Chart - Metric

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Technical Data Hardware Identification

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Health & Safety
SAFETY
These machines are designed to carry out the function of
mixing material of the non-cohesive, bituminous and
granular varieties.
If used correctly, they will provide an effective and safe
means of mixing and meet the appropriate performance
standards.
It is essential that the operator of the machine is ad-
equately trained in its safe operation, be authorized to
operate it, and have sufficient knowledge of the machine
to ensure that it is in full working order, before being put
to use.
Safety Training

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Health & Safety
· Before using this equipment, study the entire Owners Manual to become famil-
iar with its operation. Do not allow untrained or unauthorized personnel, espe-
cially children, to operate this equipment. Use only factory authorized parts for
service.
· When warning decals are destroyed or missing, contact the Manufacturer imme-
diately at -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 this manual. It means that the follow-
ing steps must be carried out to avoid the possibility of personal injury or death.
These warnings are intended to help the technician avoid potential hazards
encountered in normal service procedures. We strongly recommend the reader
take advantage of the information provided to prevent personal injury or injury to
others.
Follow Safety Instructions
· Carefully read all safety messages and decals in this manual and on your machine
safety signs. 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.
Understand Signal Words
· A signal word  DANGER, 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.
Safety Precautions
DANGER
WARNING
CAUTION

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Health & Safety
Warning - Loose Hardware
· With power off, daily check for loose hardware. Immediately inform your
supervisor to have it corrected--Do Not Run the Mixer.
Warning-Handling Fuel
· Transport and handle fuel only when contained in approved safety containers.
· Do not smoke when refueling the mixer or during any other fuel handling opera-
tion.
· Do not refuel the mixer with the unit running or while hot.
· If fuel is spilled during refueling, wipe it off 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.
Warning-Operating
· 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. If electric, unplug motor.
· Keep cowl closed during operation.
· Keep hands, clothing and jewelry away from all moving parts.
· Keep all guards in place, including drum guards.
· Never stick your hands or any solid object into the drum while it is in operation.
Warning-Hot Surfaces
· Avoid contact with hot exhaust system and engines.
· Allow engine to cool before performing any repairs or service.
Safety Precautions

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Health & Safety
Warning-Ventilation
· Never operate any gas powered mixer in a poorly ventilated or enclosed area.
· Avoid prolonged breathing of exhaust gases.
· Engine exhaust fumes can cause sickness or death.
Warning-Extension Cords
· Always use the proper size grounded extension cord, conforming to the National
Electric Code and Local Ordinances.
· Inspect all extension and extension 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 over the motor.
Wear rotective Clothing
· 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.
repare 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.
Warning-Eye rotection
· Always wear splash goggles when operating mixer.
Safety Precautions

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Health & Safety
Warning-Towing
· Warning: Do not tow the mixer with the drum in the dump position. Mixer may
become unstable and tip over when hitting a curb, pothole, or other obstruction.
· Warning: Always properly attach safety chains before mixer is towed. Maxi-
mum towing speed 55 m.p.h. (90 km/hr). Reduce speed according to highway
conditions.
Warning-Starting Fluid
· Starting fluid (ether) is highly flammable, do not use or an explosion or fire may
result.
ractice 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. Fix 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.
Dispose of Waste roperly
· Improperly disposing of waste can threaten the environment and ecology. Poten-
tially harmful waste used with equipment includes 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 Earths atmo-
sphere. Government regulations may require a certified air conditioning service
center to recover and recycle used air conditioning refrigerants.
· Inquire about the proper way to recycle or dispose of waste from your local
environmental or recycling center.
Safety Precautions

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Maintenance 1050PM, 1265PM, 1285PM,
1650PM
FIMPORTANT
The person attempting any of the
following maintenance tasks must be
authorized to do so and have read
and understood all sections within
this manual.

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Maintenance
BEFORE WORKING ON MACHINE,
MAKE SURE ENGINE SPARK PLUG
WIRE IS DISCONNECTED, OR, IF ELEC-
TRIC, THAT THE ELECTRIC CORD IS
DISCONNECTED, TO PREVENT ANY AC-
CIDENTAL STARTING.
Hardware--Check all hardware on mixer and
engine/motor before starting. Consult the TORQUE
CHART section of this manual and tighten any loose
hardware accordingly.
Fuel--If your mixer is equipped with a gasoline
engine, fill the gas tank with clean gasoline from a
safety can. Consult the ENGINE MANUAL supplied
with this unit for the proper type of gasoline re-
quired.
DO NOT mix oil with gasoline.
Before operating this unit, it is important to
familiarize yourself, and any other personnel who
will be using it, with the location and proper use of
the controls to insure safe and efficient operation.
A. Always make
sure that the drum
latch is in the lock
position (down)
before starting
machine. With
engine running,
turn clutch lever
to the right to turn
paddles or to the
left to stop.
B. To dump mix
from drum, stop
paddles, move
drum latch up and
pull dump handle
down. Always
use caution when
dumping mix.
C. Always grease drum seals (both ends as
recommended in the maintenance chart. The grease
purges dirt--prolonging bearing life.
D. Always keep
drum and paddles
clean. Never run
machine with
hardened mix or
foreign objects in
drum--doing so
damages paddles
and/or engine.
Hardware/Fuel/Location
and Use of Controls

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Maintenance Wheel Bearing Lubrication/Wheel
Bearing Adjustment/Hardware
Wheel Bearing Lubrication--Fill wheel hub with
grease to inside diameter of outer races and also fill
hub grease cap. Never use grease heavier than 265
A.S.T.M. penetration (No. 2 grade). Grease bearing
cone by machine or by hand method. Force grease
between rollers, cone and cage. (If Ball Bearing
Hub: force grease between balls.) It is not recom-
mended that a pressure grease fitting be installed on
the hub.
Wheel Bearing Adjustment--Tighten the adjusting
nut with a 2" wrench, at the same time turn the
wheel in both directions, until there is a slight bind
to be sure all bearing surfaces are in contact. Then
back off adjusting nut /6 to /4 turn or to the
nearest locking hole or sufficiently to allow the
wheel to rotate freely within limits of 0.00 " to
0.0 0" end play. Lock nut at this position.
Hardware--Periodically inspect all hardware on the
mixer and engine / motor. Loose hardware can
contribute to early component failure and poor
performance.
NOTE: Some hardware is used to retain parts that
have to move freely for correct operation of this
unit. These items include the guard lifter and drum
guard. The hardware for these items should be snug
enough to prevent excessive play, yet loose enough
to allow the parts to pivot freely.

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Maintenance
CLEANING
For consistent performance, long life and continued
high quality mixing of plaster or mortar, thoroughly
clean the mixer inside and out at the end of each
day's operation. To prevent lumps of dried plaster
from forming and contaminating future batches of
plaster or mortar, do not allow built up materials to
form on drum guards, around paddles or anywhere
inside the drum.
Before cleaning, shut off the engine or motor and
disconnect the spark plug wire or electric cord to
prevent accidental starting. Spray the mixer with
water before the mix dries to remove any
accumulations. Dried mix should be scraped out as
necessary. DO NOT beat on the drum with a
shovel, hammer or other device to break up
accumulations of dried mix, as this will dent and
damage the drum.
NEVER POUR OR SPRAY WATER
OVER THE ENGINE OR MOTOR
NEVER PUT HANDS OR ANY OBJECT
INTO THE DRUM WHILE THE ENGINE
OR MOTOR IS RUNNING
ALWAYS DISCONNECT THE SPARK
PKLUG WIRE OR ELECTRIC CORD
WHEN CLEANING INISDE DRUM
ALWAYS MAKE SURE GUARD LIFTER IS
RECONNECTED TO GUARD BEFORE
USING MIXER--DO NOT OPERATE
THE MIXER WITH DRUM GUARD OPEN
OR REMOVED
TOWING
Before attempting to tow this mixer, check the state
and local laws that apply to your intended route and
check the following:
. Hitch attached to the towing vehicle securely.
2. Towpole fully extended and bolted to mixer
securely.
3. Safety chain hooked up properly (see
illustration below or decal on mixer front post).
4. Drum in the mixing position and drum latch
engaged, clutch lever in the UP position.
5. Lug nuts and axle mount nuts tight.
6. On extendible axles, axle extended to full width
and adjustment bolts tight.
7. On spring axles - spring mounting hardware
tight, main springs and snubber springs not
cracked or broken.
Cleaning/Towing

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Maintenance
8. Tires in good shape and at proper inflation, for
maximum safety and load capacity tires should
be inflated to the following pressures:
Tire size 4.80 x 2 @ 60 P.S.I.
Tire size 6.50 x 3 @ 35 P.S.I.
DO NOT EXCEED A TOWING SPEED OF 55
MILES/HR (90 KM/HR)
FOR POOR ROAD CONDITIONS OR
INCLEMENT WEATHER, REDUCE SPEED
ACCORDINGLY
Refer to FRAME AND DRUM ASSEMBLY,
STANDARD AXLE ASSEMBLY and SPRING
AXLE ASSEMBLY sections of this manual for parts
identification and location.
Towing

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Maintenance Bearing and Seal Installation
Instructions for Seal & Bearing Assembly Kits
P/N 23432
STONE® Mortar Mixers
1050PM, 1265PM, 1285PM, 1650PM and HM1290
ITEM /N DESCRI TION QUANTITY
1 24017 Washer 2
8 25881 Washer Split 1
15 32003 Bearing 1
16 32324 Seal Drum Yellow 4
1. Disassemble drum from frame and remove. Unscrew end bolts from paddle shaft and remove spacers and bull gear.
2. Attach a three-jaw puller to ring on housing, center puller on paddle shaft and remove housing and bearing.
3. Remove worn components and clean shaft and housing as needed.
4. Assemble seals and spacers over paddle shaft, flush with drum end using soapy water mixture as lubricant.
5. Make sure seals are assembled tight up to drum end; inner lip of seals curve inwards towards drum end as illustrated.
6. Insert bearing into housing and slide over shaft and seals as illustrated.
7. Tighten housing evenly to drum end so as not to pinch seals.
8. Reassemble spacer, bull gear (if applicable), washer and bolt to paddle shaft and repeat steps 4-7 on opposite end and reassemble
drum to frame.

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Maintenance
BULL GEAR ASSEMBLY
. Align Bull Gear keyway opposite to gear mesh.
2. Adjust pinion for tooth alignment and engagement using .0 0 feeler gauge.
3. Tighten all four (4) pillow block bolts before removing feeler gauge.
Bull Gear Assembly