Roto-Mix 425 User manual

Mixers by ROTO-MIX
MODEL 425, 500 & 575
TMR RUFFAGE MASTER
TRUCK AND TRAILER MIXERS
OPERATOR’S MANUAL
INSTALLATION INSTRUCTIONS AND PARTS
ROTO-MIX LLC
P.O. BOX 1724
2205 E. Wyatt Earp Blvd.
Dodge City, Kansas 67801
[phone]
®ROTO-MIX 2006
SERIAL NUMBER ____________
441915 08/17 Printed in U.S.A.
OSWALT
®

Page 2
INTRODUCTION
Congratulations on the purchase of your new mixer
from OSWALT by ROTO-MIX. With proper operation
and preventative maintenance it will last for years.
This SAFETY ALERT SYMBOL indicates im-
portant safety messages in the manual. When you see
this symbol, be alert to the possibility of PERSONAL
INJURY and carefully read the message that follows.
NEVER OPERATE WITHOUT ALL COVERS,
SHIELDS AND GUARDS IN PLACE. KEEP HANDS,
FEET AND CLOTHING AWAY FROM MOVING
PARTS.
Some covers and guards have been removed for illus-
trative/photographic purposes only in this manual.
The Guarantee appears in the front of this book along
with the Registration and Inspection Certificate.
For information on ordering repair parts, refer to the
Repair Parts section at the back of this book.
The serial number and model number tag is located on
a metal plate which is attached on the inside of the
lower left front structure viewed from behind the mixer.
These numbers should be recorded on the Registra-
tion and Inspection Certificate for your reference and
for proper identification of your mixer by your OSWALT
dealer.
You are urged to study this manual and follow the in-
structions carefully. Your efforts will be repaid in better
operation and service as well as a savings in time and
repair expense. Failure to read and understand the
machine or the system could lead to serious injury. If
you do not understand the instructions in this manual
contact either your dealer or OSWALT of ROTO-MIX
Dodge City, KS 67801.
This supersedes all previous published instructions.

Page 3
MODEL 425/500/575 TMR RUFFAGE MASTER™
INSPECT THE FOLLOWING AND SERVICE AS REQUIRED
qCheck all structural welds for appearance.
qCheck rear drive enclosure for proper sprocket
alignment and correct chain tension.
qCheck rear doors for proper latch tension and fit,
correct any leaks.
qCheck conveyor chain for proper tension and
proper clearance. See Adjustment Section.
qCheck clearance between moving parts.
qCheck scale mounts for alignment and pins for
looseness.
qCheck inside of mixing chamber for trash, auger
clearance and check augers for correct installa-
tion.
qCheck external paint for appearance.
qCheck all bolted connections for tightness.
qCheck wheel lug bolts and torque to 85 ft.-lbs.
Maintain tire pressure at 55-60 psi.
qCheck rear drive bearings for alignment, tightness
of locking collars and proper placement of bearing
stops.
qCheck rear drive enclosure for alignment and
proper chain tensions.
qCheck oil level of rear drive enclosure.
qCheck main drive shaft for proper installation and
clearance.
qCheck hoses for correct clearance and fittings for
leaks.
qCheck U-joint for timing and installation.
qCheck frame/box mounting points for proper
installation.
qCheck auger bearings for correct installation and
grease bearings.
qCheck for trash or foreign articles in discharge
conveyor.
RUN MIXER AND CHECK THE FOLLOWING:
qCheck for vibration or runout of drive lines.
qCheck for free operation of discharge conveyor.
qCheck augers for straightness.
qCheck mixer, observing all safety decals and safety shields are in
place and secured, including top guards on stationary units.
qCheck for chain vibration in rear drive.
qCheck chute and door actuation.
qOperator has been instructed in operation, maintenance and
safety precautions.
ALWAYS DISCONNECT AND LOCKOUT ELECTRICAL POWER (STATIONARY MODELS) OR DISENGAGE
PTO AND REMOVE KEYS FROM TRACTOR (TRAILER MODELS) BEFORE CLEANING, ADJUSTING, LUBRI-
CATING OR SERVICING THIS MACHINE.

Page 4
APPLY ADHESIVE TO THIS AREA AND FIRMLY AFFIX THE OSWALT WARRANTY REGISTRATION
CERTIFICATE ON THIS PAGE
DEALER: Please fill out the attached Warranty Registration Certificate completely. Remove the postage paid card
at the perforation and deposit in the mail.

Warranty Statement WS-0716
ROTO-MIX LLC warrants to the original purchaser all products manufactured by it to be free from defects in material
and workmanship under normal use and service.
ROTO-MIX’s obligation under this warranty is limited to repairing or replacing, as the company may elect, free of
charge and without charge for installation, at the place of business of a dealer or distributor authorized to handle the
equipment covered by this warranty or at a ROTO-MIX facility, any parts that prove, in the company’s judgment, to be
defective in material or workmanship within one (1) year after delivery to the original purchaser, and still owned by
the original purchaser. This warranty shall in no way make ROTO-MIX liable to anyone for personal injuries or
damages, loss of time, or expense of any kind either direct or indirect resulting from part failure or defect. This
warranty is subject to acts of God, fire and existing conditions of supply and demand, or production, or ability or
inability to deliver, or for any other valid reason beyond the reasonable control of ROTO-MIX, to obtain materials,
manufactured replacement parts, or make delivery thereof. No distributor, dealer, agent, or ROTO-MIX employee
(other than the CEO or President in writing) is authorized to extend any other or further express or implied warranty
or incur any additional obligation on ROTO-MIX’s behalf in connection with the sale of this product.
If ROTO─MIX, or its duly authorized representative, shall find that such returned part or parts are defective and such
defects, or defect, are included in and covered by said warranty, then such defective part or parts shall promptly be
replaced without charge to the purchaser, F.O.B. the ROTO─MIX plant.
Product Registration - It is a condition of this warranty that the original purchaser must fill out the warranty card
furnished by ROTO-MIX and that it be returned to ROTO-MIX within 10 days of purchase and be recorded in ROTO-
MIX’s owner file for this warranty to be valid. In the event an owner’s card is not on file at the ROTO-MIX office, the
warranty period will extend only from date equipment was picked up or shipped from the ROTO-MIX plant.
Maintenance - It is the customer’s responsibility to maintain their equipment in accordance with the instructions
provided in the Operator’s Manual. ROTO-MIX recommends that you keep records and receipts; you may be asked
to prove that maintenance instructions have been followed.
Operation –It is the customer’s responsibility to operate the equipment only for the purpose for which it was
designed and in accordance with all safety and operational recommendations contained in the Operators Manual. If a
defect in materials or workmanship occurs, it is the customer’s responsibility to cease operating the equipment until
authorized repairs are made. Damage, which occurs from continued operation, may not be covered by this
warranty.
What this Warranty Covers
This warranty covers failures caused by defects in materials or workmanship only.
This Warranty does not cover failures caused by:
-Improper operation
-Natural calamities
-Unauthorized modifications
-Unauthorized repairs
-Use of Non ROTO-MIX parts
-Neglected maintenance
-The use of PTO Shaft Adaptors
-Usage contrary to the intended
purpose of the product
Warranty continues on the next page.
Page 5

Warranty Statement WS-0716
This Warranty does not cover replacement of Wear or Maintenance Items including, but not limited to.
This Warranty does not cover:
-Pickup and delivery of the equipment
-Service Calls or Travel Time to and from sites
-Rental of replacement equipment during repair period
-Products that have been declared a total loss and subsequently salvaged
-Overtime labor charges
-ROTO-MIX is not responsible and will not be liable for damage caused to persons or property, commercial loss, loss
of time or production, loss of use by reason of the installation or use of ROTO-MIX products or their mechanical
failure.
Right to Make Changes
ROTO-MIX reserves the right to make any changes to a OSWALT by ROTO-MIX product at any time without incurring
any obligation with respect to any product previously ordered, sold or shipped, with or without notice.
Parts Warranty
ROTO-MIX warranties replacement parts against defects in materials or workmanship for a period of 90 days or the
remainder of the product warranty, whichever is longer. Remedy for defective replacement parts for units that are
beyond the original product warranty, will be limited to replacement of the failed part. Failures that are due to
damage, improper installation, lack of maintenance or improper operation will not be covered.
ROTO-MIX 2205 East Wyatt Earp Blvd., Dodge City, KS 67801 [phone] Fax: [phone]
-Lubricants
-Filters
- Hoses
-Tires
-Augers
-Wipers
-Chains
-Idlers
-Batteries
-Blades
-Belts
SCALES WARRANTY & SERVICE POLICY
DIGI-STAR SCALE SYSTEMS
Digi-Star, LLC warrants for a period of one year from date of installation, to correct by repair or
replacement, at Digi-Star’s option, any defect in material or workmanship in any part of this product. In
the event of replacement, Digi-Star’s sole obligation shall be to provide replacement products or parts.
F.O.B. Digi-Star, LLC, W5527 Hwy 106, Fort Atkinson, WI 53538 USA.
WEIGH-TRONIX SCALE SYSTEMS
WEIGH-TRONIX warrants for a period of one year from date of installation, to correct by repair or
replacement, at Weigh-Tronix’s option, any defect in material or workmanship in any part of this product.
In the event of replacement, Weigh-Tronix’s sole obligation shall be to provide replacement products or
parts. F.O.B. Avery Weigh-Tronix, 1000 Armstrong Drive, Fairmont, MN 56031-1439 USA.
Page 6

Page 7
TABLE OF CONTENTS
INTRODUCTION .....................................2
WARRANTY .......................................5
THREE-YEAR LIMITED WARRANTY-ELECTRONIC SCALE PRODUCTS ...............6
SAFETY- TRAILER MIXER .................................8
SAFETY DECALS - TRAILER MIXER .............................9
SAFETY - TRUCK MIXER .................................10
SAFETY DECALS - TRUCK.................................11
MIXER SAFETY .....................................12
DIMENSIONAL DATA - TRAILER MOUNT ...........................14
DIMENSIONAL DATA - TRUCK MOUNT............................16
GENERAL INFORMATION .................................18
MIXING CAPACITY ..................................18
ROUGHAGE LENGTH .................................18
USE OF BALED HAY..................................18
LOADING ......................................18
MIXING TIME .....................................19
SHEAR PIN .....................................19
TRACTOR DRAWBAR .................................19
TRACTOR HYDRAULIC SYSTEM RECOMMENDATIONS ...................20
TRUCK RECOMMENDATIONS..............................20
TRAILER OPERATION ..................................21
PTO ENGAGEMENT ..................................21
CORNERING .....................................21
DISCHARGING FEED .................................21
SCALE SWING MOUNT ................................21
OPTIONAL SINGLE VALVE CONVERSION .........................21
SCALE SYSTEM ...................................21
TRANSPORTING ...................................22
TRUCK OPERATION ...................................23
TRUCK .......................................23
PTO ENGAGEMENT ..................................23
PUMP ENGAGEMENT .................................23
DISCHARGING FEED .................................23
SCALE SYSTEM ...................................23
ADJUSTMENTS - TRAILER & TRUCK MOUNTS ........................24
DISCHARGE CONVEYOR HEIGHT ............................24
CONVEYOR DRIVE CHAIN ...............................24
CHAIN IDLER SPRINGS ................................24
TRAILER HITCH CLEVIS ADJUSTMENT (TRAILER MOUNT ONLY) ...............24
ADJUSTMENT OF FOLDING CHUTE ...........................24
DRIVE CHAIN ROUTING ................................25
LUBRICATION - TRAILER MOUNTS .............................26
LUBRICATION - TRUCK MOUNT ..............................27
TROUBLESHOOTING ...................................28
TRUCK AND TRAILER OPTIONAL
COMPONENT INSTALLATION ...............................29
INSTALLING EXTENDED CONVEYOR (OPTIONAL) .....................29
INSTALLING CHUTE AND PIVOT BAR (OPTIONAL) .....................30
INSTALLING BAFFLE
(OPTIONAL) .....................................31
INSTALLING SINGLE PAIR HYDRAULIC VALVE (OPTIONAL - TRAILER MOUNT ONLY)) ......31
SCALE MOUNTING (TRUCK MOUNT ONLY) ........................32
CLEARANCE LIGHTS (TRUCK MOUNT ONLY) .......................32
INSTALLING SCALE TRACTOR SOCKET (SHIPPED WITH TRAILER MOUNTED MIXER) ......33
INSTALLING BATTERY ON MIXER (TRAILER MOUNT ONLY) .................33
REPAIR PARTS .....................................34
FINAL FACTORY INSPECTION ...............................92

Page 8
SAFETY- TRAILER MIXER
A brief definition of signal words that may be used in this manual:
Indicates an imminently hazardous
situation that, if not avoided, will result in death or seri-
ous injury.
Indicates a potentially hazardous
situation that, if not avoided could result in death or se-
rious injury, and includes hazards that are exposed
when guards are removed.
Indicates a potentially hazardous
situation that, if not avoided may result in minor or
moderate injury.
READ ALL SIGNS ON THE MACHINE AND IN THIS MANUAL. REPLACE
ANY LOST OR DAMAGED SIGN BY ORDERING THE PART NUMBERS SHOWN ON THE
SAFETY DECAL PAGE.
A
B
D
E
F
G
H
J
I
H
L
K
K
K
C

Page 9
SAFETY DECALS - TRAILER MIXER
DECAL A. B157506 DECAL B. 157511
DECAL C. 152545
DECAL D. 154576
DECAL E. 154579 DECAL F. 154583 DECAL G. 154578
DECAL H. 143553 DECAL I. 157509s
DECAL J. 157505
DECAL K. SW104 DECAL L. 157510
NOTE: Complete decal kit (all sizes and models) - 160412

Page 10
SAFETY - TRUCK MIXER
A
G
E
D
K
I
LI
F
I
C
I
READ ALL SIGNS ON THE MACHINE AND IN THIS MANUAL. REPLACE
ANY LOST OR DAMAGED SIGN BY ORDERING THE PART NUMBERS SHOWN ON THE
SAFETY DECAL PAGE.

Page 11
SAFETY DECALS - TRUCK
DECAL A. B157506
DECAL C. 152545
DECAL D. 154576
DECAL E. 154579 DECAL F. 154583 DECAL G. 154578
DECAL I. 157509s
DECAL K. SW104
DECAL L. 157510

MIXER SAFETY
Do not operate your feed mixer until you have read this Owner’s Manual, the Truck Owner’s Manual, and under-
stand the danger associated with its operation.
This feed mixer is comprised of rotating drive shafts and mixing augers. Any exposure to these mixer compo-
nents can result in serious personal injury or death.
Study the safety decal page associated with your model mixer and understand where the danger points are.
On truck or trailer mounted mixers, never allow operating personnel to be above the level of the feed mixing
chamber. Entry into the mixing chamber while the mixer is running will result in serious injury or death.
THERE ARE INHERENT HAZARDS ASSOCIATED WITH THE OPERATION OF YOUR MIXER.
FOR YOUR SAFETY:
·Do Not Operate, Service, Inspect Or Otherwise Handle This Equipment Unless You Have Read The Owner’s
Manual And Have Been Properly Trained In Its Intended Usage.
·Require All Personnel Who Will Operate This Machinery Or Perform Service, To Read And Understand The
Safe Operating Practices And Safety Precautions In This Manual.
·Do Not Operate Until All Shields, Covers And Guards Are In Place.
·Do Not Allow Children Or Inexperienced Person To Operate This Machine.
·Keep Hands, Feet And Clothing Away From Power Take-off Shaft.
·Do Not Climb On Or Enter Machine While In Operation.
·Do Not Make High Speed Maneuvers With A Mounted Mixer.
·Do Not Allow Riders On A Mounted Mixer.
FAILURE TO HEED MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.
Page 12

THERE ARE ADDITIONAL HAZARDS ASSOCIATED WITH THE SERVICE AND MAINTENANCE OF YOUR
MIXER.
FOR YOUR SAFETY:
·Disengage Power Take-off And Remove Keys From Tractor Or Truck Before Servicing A Mounted Mixer.
·Do Not Attempt To Clean, Oil Or Adjust Mixer While It Is In Motion.
·Before Entering Mixing Chamber Or Servicing Stationary Mixer, Disconnect Main Power Source And Lock
The Disconnect Device In Off Position To Prevent Accidental Start-up.
·Do Not Work Under A Trailer Mixer Without Supporting With Suitable Support Stands.
·Do Not Work Under A Trailer Or Truck Mixer Without Blocking The Wheels To Prevent Rolling.
FAILURE TO HEED MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.
Page 13

Page 14
DIMENSIONAL DATA - TRAILER MOUNT

Page 15
DIMENSIONAL DATA CHART - TRAILER MOUNT
DIM DIM
AB
100.9 15.0
DIM DIM DIM DIM DIM DIM
ABABCD
113.6 58.7 109.9 48.9 42.0 101.8
119.3 52.0 114.7 48.1 38.3 104.6
121.9 47.9 116.9 44.5 35.8 105.8
123.9 43.7 118.6 40.8 33.3 106.7
125.5 39.5 119.9 37.1 30.9 107.3
126.6 35.2 120.8 33.4 28.4 107.7
127.3 30.8 121.4 29.6 25.9 107.8
127.5 26.3 121.6 25.7 23.3 107.7
127.4 22.0 121.3 21.8 20.8 107.3
126.7 17.2 120.7 17.8 18.3 106.6
125.5 12.6 119.7 13.8 15.7 105.7
123.8 7.9 118.1 9.8 13.2 104.4
DIM DIM DIM DIM DIM DIM
ABABCD
125.7 74.0 122.0 69.3 57.7 113.9
134.1 64.7 129.6 60.8 50.9 119.4
138.0 58.9 133.0 55.5 46.8 121.9
141.0 53.0 135.8 50.1 42.6 123.8
143.4 47.0 137.9 44.7 38.4 125.3
145.2 40.9 139.5 39.2 34.1 126.3
146.4 34.7 140.5 33.5 29.8 126.9
146.9 28.4 141.0 27.8 23.4 127.0
146.8 21.9 140.8 21.9 20.9 126.8
146.1 15.4 140.1 16.0 16.4 126.0
144.7 8.7 138.8 9.9 11.8 124.8
Hole 11 (fully extended) 142.4 2.0 136.7 3.8 7.3 123.0
Hole 10
Hole 1
Hole 2
Hole 3
Hole 4
Hole 5
Hole 6
Hole 7
Hole 8
Hole 9
PIN
Position
Storage
Hole 11 (fully extended)
Hole 7
PIN
Position
Storage
Hole 8
Hole 9
Hole 10
Hole 5
Hole 6
Hole 4
Hole 3
Hole 1
Hole 2
Extended Conveyer
Baffle Fully Extended Baffle Positioned at Center Hole Conveyer Only
Gravity Slide
(measured to widest edge of chute)
Standard Conveyer
Baffle Fully Extended Conveyer OnlyBaffle Positioned at Center Hole

Page 16
DIMENSIONAL DATA - TRUCK MOUNT

Page 17
DIMENSIONAL DATA - TRUCK MOUNT
DIM DIM
AB
99.5 32.6
PIN DIM DIM DIM DIM DIM DIM
PositionABABCD
Storage 112.2 76.3 108.5 66.5 59.6 100.4
Hole 1 117.9 69.6 113.3 65.7 55.9 103.2
Hole 2 120.5 65.5 115.5 62.1 53.4 104.4
Hole 3 122.5 61.3 117.2 58.4 50.9 105.3
Hole 4 124.1 57.1 118.5 54.7 48.5 105.9
Hole 5 125.2 52.8 119.4 51.0 46.0 106.3
Hole 6 125.9 48.4 120.0 47.2 43.5 106.4
Hole 7 126.1 43.9 120.2 43.3 40.9 106.3
Hole 8 126.0 39.6 119.9 39.4 38.4 105.9
Hole 9 125.3 34.8 119.3 35.4 35.9 105.2
Hole 10 124.1 30.2 118.3 31.4 33.3 104.3
Hole 11 (fully extended) 122.4 25.5 116.7 27.4 30.8 103.0
PIN DIM DIM DIM DIM DIM DIM
PositionABABCD
Storage 124.3 91.6 120.6 86.9 75.3 112.5
Hole 1 132.7 82.3 128.2 78.4 68.5 118.0
Hole 2 136.6 76.5 131.6 73.1 64.4 120.5
Hole 3 139.6 70.6 134.4 67.7 60.2 122.4
Hole 4 142.0 64.6 136.5 62.3 56.0 123.9
Hole 5 143.8 58.5 138.1 56.8 51.7 124.9
Hole 6 145.0 52.3 139.1 51.1 47.4 125.5
Hole 7 145.5 46.0 139.6 45.4 41.0 125.6
Hole 8 145.4 39.5 139.4 39.5 38.5 125.4
Hole 9 144.7 33.0 138.7 33.6 34.0 124.6
Hole 10 143.3 26.3 137.4 27.5 29.4 123.4
Hole 11 (fully extended) 141.0 19.6 135.3 21.4 24.9 121.6
Gravity Slide
(measuredtowidestedgeofchute)
Standard Conveyer
Baffle Fully Extended Baffle Positioned at Center Hole Conveyer Only
Extended Conveyer
Baffle Fully Extended Baffle Positioned at Center Hole Conveyer Only

GENERAL INFORMATION
MIXING CAPACITY
Maximum Ration Volume
Model 425 425 cu. ft.
Model 500 500 cu. ft.
Model 575 575 cu. ft.
Maximum Ration Weight (based on a 30 lb./ft. 3ra-
tion)
Model 425 12750 lb.
Model 500 15000 lb.
Model 575 17250 lb.
Maximum Weight Of Baled Hay
10% of ration by weight.
ROUGHAGE LENGTH
The mixer is designed to mix complete rations including
roughage which fall within the following length limits.
1. At least 75% of the material is 1-1/2 inches or
shorter.
2. Less than 20% of the material exceeds 2-1/2
inches.
3. Maximum fiber length does not exceed 4 inches.
USE OF BALED HAY
Oswalt mixers are designed to blend feed ingredients
with “dry hay” to obtain a total mixed ration. Dry hay
will have less than 20% moisture. A simple hand test
on three stems of hay will tell you if the hay should be
put into the mixer.
Reach into the core of the bale and remove 3 stems of
hay. Try to bend and break these 3 stems when hold-
ing them between the thumb and forefinger of both
hands. If they snap and break easily the mixer will pro-
cess the hay fairly easily. If the hay is NOT very brittle
and you have to twist, tug, pull, and pinch to break it
apart, you have a “tough hay” condition. Weather and
plant varieties, etc., can generate these conditions.
Conditions That Cause Abnormal Tough Hay
·High Moisture Content (20% plus)
·High Density Bales
·High Grass Content
·Outdoor Storage
·Long Stem Length
·Use of Hay Preservatives
FINE STEM GRASS HAY WITH LENGTHS OVER 16
INCHES Are Not Recommended because they tend to
wrap around the augers unless they are extremely brit-
tle.
LOADING
The loading sequence depends on the type of feed be-
ing used. For this reason, we offer a few suggested
loading sequences to maximize mixer performance
and avoid equipment failure.
NOTE: When is doubt, throw in a half bale of the
questionable feed to insure hay breaks apart and does
not wind or wad in the mixer.
For a ration utilizing “dry hay” the ingredients can be
all added at one time and then mixed. The ingredients
should be added with the mixer stopped to avoid over
processing. The ingredients should be added in the
following order: all dry ingredients (corn, soybeans,
cottonseed, etc.) then the hay, and the remaining ma-
terials last. When all ingredients have been added,
the mixer can be started and mixing completed.
If adding all the materials at once causes mixing prob-
lems or if you have a “tough hay” condition, then add
the ingredients using the following sequence. With the
mixer stopped, add all dry ingredients. The introduc-
tion of the dry ingredients first helps the mixer break
up the hay. Next turn on the mixer and add the hay.
Hay should be broken apart and added at the drive
end of the mixer. Allow the dry materials and hay to
mix until the flakes of hay are broken up. Then add
the remaining materials and complete the mixing. If
this process causes over processing of the ingredi-
ents, shut off the mixer after mixing the hay and dry in-
gredients and restart and complete mixing after all
remaining ingredients have been added.
If this process causes mixing problems associated with
the hay, then it is recommended that the hay be pro-
cessed to a shorter length prior to adding to the mixer.
A J-Star bale cutter is recommended to accomplish
this.
NOTE: Round bales should not be incorporated di-
rectly into the mixer without first being processed.
Page 18

MIXING TIME
Normal mixing time after the last ingredient has been
added.
Trailer 5 min. @540 RPM
Truck 5 min. @1650 RPM (Engine RPM)
Total run time (filling, mixing, and discharging) should
not exceed 15 minutes per batch. Use of baled hay in
the mix will increase the mix time by 5 minutes.
SHEAR PIN
The shear pin assembly is located at the back of the mixer
just in front of the oil bath drive housing, see figure 1.
Extra shear bolts are located in a holder on the right
side of the rear structure, see figure 2.
TRACTOR DRAWBAR
Set tractor drawbar as shown in figure 3.
FAILURE TO SET DRAWBAR
PROPERLY MAY CAUSE SHAFT TO OVER EXTEND
AND SEPARATE OR BEND WHEN CORNERING OR
TRANSPORTING RESULTING IN DEATH OR PER-
SONAL INJURY.
Page 19
FIGURE 1. DRIVE SHAFT SHEAR PIN
(2) 5/16 NUTS
5/16x2 GR5 HEX BOLT*
FIGURE 2. SPARE SHEAR BOLTS
SHEAR BOLTS STORED HERE
FIGURE 3. TRACTOR DRAWBAR

TRACTOR HYDRAULIC SYSTEM RECOMMENDATIONS
10 GPM Minimum 15 GPM Maximum
1200 to 1600 PSI Operating Range
Hydraulic system should be self purging.
TRUCK RECOMMENDATIONS
Minimum engine horsepower - 200 hp net @ 2000 rpm (total hp required) to mix load and move vehicle)
Engine to Ground Ratio - The engine to ground ratio is obtained by multiplying the transmission
low gear ratio times the rear axle ratio. For best results, we recommend
an engine to ground ratio of 50 to 1.
Transmission - The first choice transmission would be an Allison MT 653.
PTO - The first choice of PTO is a hydraulic shift PTO ("Hotshift") rated at 300 ft-lbs
output torque with a pressurized lubrication system. Rotation should be of
engine rotation and at a percentage of engine speed of approximately 130%.
Truck Minimum GVWR - 32,900 lbs GVWR necessary to carry fully loaded mixer.
Rear Axle Minimum Capacity 21,900 lbs (single axle)
Front Axle Minimum Capacity - 11,000 lbs
Frame - 1,749,000 in-lb resistive bending moment
Cab to Axle:
Model 425 - 108 in
Model 500 - 120 in
Model 575 - 138 in
Auxiliary Hydraulic System - 10 GPM minimum
- 15 GPM maximum
- 1200 to 1600 psi operating range
- Hydraulic System Should Be Self Purging
A high flow, "Feed Lot", radiator is desirable as it is easier to keep clean.
Page 20