Roto-Spread 532-16 Guide

Page
532-16 & 672-20
MANURE SPREADER
TRUCK UNIT
OPERATION AND PARTS MANUAL
ROTO-MIX LLC
2205 E. Wyatt Earp
PO Box 1724
Dodge City, Kansas 67801
[phone]
©Roto-Mix 2006
441937 08/2017 Printed in U.S.A.

Page 2
Congratulations on the purchase of your new
spreader from Roto-Mix. With proper operation and
preventative maintenance it will last for years.
This SAFETY ALERT SYMBOL indicates
important safety messages in the manual. When you
see this symbol, be alert to the possibility of PER-
SONAL 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
illustrative/photographic purposes only in this man-
ual. However, equipment should never be operated
in this condition. Keep all shields in place. If shield
removal becomes necessary for repairs, replace the
shield prior to use.
The Guarantee appears in the front of this book
along with the Registration and Inspection Certifi-
cate.
For information on ordering repair parts, refer to the
Repair Parts section at the back of this book.
The serial number plate is located on the drivers side
lower front of the main frame. This number should be
recorded on the Registration and Inspection Certifi-
cate for your reference and for proper identification of
your spreader by Roto-Mix.
You are urged to study this manual and follow the
instructions 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 Roto-Mix at Dodge City, Kansas
67801.
This supersedes all previous published instructions.
INTRODUCTION

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:
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 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]
 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
 lubricants
 Filters
 Hoses
 Tires
 Augers
 Wipers
 Chains
 Idlers
 Batteries
 Blades
 Belts
Page 3

Page 4
DESCRIPTION PAGE NO.
Introduction ................................................................................................................ 2
Warranty .................................................................................................................... 3
Table Of Contents ...................................................................................................... 4
Safety-Spreader ......................................................................................................... 5
Safety Decals ............................................................................................................. 5
Spreader Safety ......................................................................................................... 6
Safety Decal Care ................................................................................................ 8
Specifications ............................................................................................................. 9
Dimensional Data-Spreader ................................................................................. 9
Specifications & Features ..................................................................................... 10
Pre Operation ........................................................................................................... 11
Highway and Transport Operation ...................................................................... 11
Operation .................................................................................................................. 12
Loading ................................................................................................................ 12
Unloading ............................................................................................................ 12
Spread Pattern .................................................................................................... 13
Storage and Cleaning .......................................................................................... 14
Maintenance ............................................................................................................. 15
Lubrication ........................................................................................................... 15
Bearings .............................................................................................................. 15
Drive Chain Planetary Gearbox ........................................................................... 15
Hydraulic System ................................................................................................ 16
Adjustments ......................................................................................................... 17
Sliding Gate Scrapers ......................................................................................... 17
Drive Chain Slack ................................................................................................ 17
Rear Gate Flashing ............................................................................................. 18
Adjust Spread Pattern ......................................................................................... 18
Repair Parts .............................................................................................................. 19
TABLE OF CONTENTS

Page 5
A (Both Sides)
D (Both Sides)
B (Both Sides)
B,C & D (Front)
NOTE: Complete decal kit part number for 672-20 is 630007, for 532-16 is 630004
A brief definition of signal words that may be used in this manual:
SAFETY - SPREADER
Indicates a potentially hazardous
situation that, if not avoided may result in minor or
moderate injury.
Indicates an imminently hazardous
situation that, if not avoided, will result in death or
serious injury.
Indicates a potentially hazardous
situation that, if not avoided could result in death or
serious injury, and includes hazards that are ex-
posed when guards are removed.
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.
Decal A. 440827 Decal C. 440801 Decal D. 441657
Decal B. 440833

Page 6
Do not operate your spreader until you have read this Owner’s Manual, and understand the danger
associated with its operation.
This spreader is comprised of rotating drive shafts and rotating beaters. Any exposure to these spreader
components can result in serious personal injury or death.
Study the safety decal page and understand where the danger points are.
THERE ARE INHERENT HAZARDS ASSOCIATED WITH THE OPERATION OF YOUR SPREADER.
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.
Do Not Attempt To Operate This Equipment Under The Influence Of Drugs Or Alcohol.
Do Not Allow Personnel Other Than The Qualified Operator Near The Machine.
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 Persons To Operate This Machine.
Keep Hands, Feet And Clothing Away From Power Take-Off Shaft.
Loose Or Floppy Clothing Should Not Be Worn By The Operator. Wear Close Fitting Clothing.
Stop The Engine And Be Sure PTO Drive line Is Stopped Before Making Adjustments, Connections, Or
Cleaning Out PTO Driven Equipment.
Do Not Climb On Or Enter Machine While In Operation.
Do Not Allow Riders On The Spreader.
Rotating Parts Can Crush Or Dismember Causing Personal Injury Or Death.
Rotating Parts Can Entangle Or Strike People, Resulting In Personal Injury Or Death.
Operate The Spreader From The Operator’s Seat Only.
Clear The Area Before Equipment Start Up.
Do Not Go Near The Spreader Beaters While Machine Is Operating.
FAILURE TO HEED MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.
SPREADER SAFETY

Page 7
Stay Clear Of Rotating Drive lines.
Entanglement In Rotating Drive line Can Cause Serious Injury Or Death.
Do Not Exceed Load Capacity Of The Spreader (See Specifications).
Do Not Operate On Steep Slopes As Overturn May Result. Operate Up And Down (Not Across)
Intermediate Slopes. Avoid Sudden Starts And Stops. Pick The Most Level Possible Route When
Transporting Across Fields. Avoid The Edges Of Ditches Or Gullies And Steep Hillsides.
Use Caution When Traveling Over Uneven Terrain And When Approaching Stops.
Avoid Overhead Wires Or Other Obstacles. Contact With Overhead Lines Could Cause Serious Injury or
Death.
As A Precaution, Always Recheck The Hardware On Spreader Following Every 100 Hours Of Operation.
Correct All Problems. Follow The Maintenance Safety Procedures.
THERE ARE ADDITIONAL HAZARDS ASSOCIATED WITH THE SERVICE AND MAINTENANCE OF
YOUR SPREADER.
FOR YOUR SAFETY:
Always Wear Eye Protection When Servicing Spreader.
Disengage Power Take-Off And Remove Keys From Truck Before Servicing Spreader.
Do Not Attempt To Clean, Oil Or Adjust Spreader While It Is In Motion.
Stop The Engine And Be Sure Spreader Is Stopped Before Making Adjustments, Connections, Or
Cleaning Out Equipment.
Make Sure There Is Plenty Of Ventilation. Never Operate The Engine Of The Vehicle In A Closed
Building. The Exhaust Fumes May Cause Asphyxiation.
Before Working On The Spreader, Stop The Vehicle, Set The Brakes, Disengage The PTO And All
Power Drives, Shut Off The Engine And Remove The Ignition Keys.
Inspect When First Delivered And Regularly Thereafter; That All Connections And Bolts Are Tight And
Secure Before Operating.
Retighten All Wheel Bolts After The First Hour Of Operation. Check Periodically Thereafter.
Maintain Proper Tire Air Pressure At All Times.
Be Certain All Moving Parts On Attachments Have Come To A Complete Stop Before Attempting To
Perform Maintenance.
Before Entering Mixing Chamber Or Servicing Spreader, Disconnect Main Power Source And Lock The
Disconnect Device In Off Position To Prevent Accidental Start-Up.
FAILURE TO HEED MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

Page 8
Do Not Work Under A Spreader Without Supporting With Suitable Support Stands. Always Use A Safety
Support And Block The Wheels. Never Use A Jack To Support The Machine.
Do Not Work Under A Spreader Without Blocking The Wheels To Prevent Rolling.
A Fire Extinguisher And First Aid Kit Should Be Kept Readily Accessible While Performing Maintenance
On This Spreader.
Escaping Hydraulic Fluid Under Pressure Can Penetrate The Skin Causing Serious Injury Or Death.
Avoid Hydraulic Hazard By Relieving Hydraulic Pressure Before Disconnecting Hydraulic Or Other
Lines.
Tighten All Connections Before Applying Pressure.
Search For Hydraulic Leaks With A Piece Of Cardboard. Protect Hands And Body From High Pressure
Fluids. Never Use Your Hands To Locate Hydraulic Leaks On Attachments.
Replace All Shields And Guards After Servicing And Before Moving.
Never Replace Hex Bolts With Less Than Grade Five (5)Bolts Unless Otherwise Specified.
REMEMBER:
Your best assurance against accidents is a careful and responsible operator. If there is any portion of this
manual or function you do not understand, contact your dealer or the ROTO-MIX plant.
Safety Decal Care
1. Keep safety decals and signs clean and legible at all times.
2. Replace safety decals and signs that are missing or have become illegible.
3. Replaced parts that displayed a safety sign should also display the current sign.
4. Safety decals or signs are available from your dealer or the ROTO-MIX manufacturing plant.
5. How to Install Safety Decals:
A. Be sure that the installation area is clean and dry.
B. Decide on the exact position before you remove the backing paper.
C. Remove the smallest portion of the split backing paper.
D. Align the decal over the specified area and carefully press the small portion with the exposed
sticky backing in place.
E. Slowly peel back the remaining paper and carefully smooth the remaining portion of the decal in
place.
F. Small air pockets can be pierced with a pin and smoothed out using the piece of decal backing
paper.
FAILURE TO HEED MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

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ALL DIMENSIONS ARE APPROXIMATE AND SUBJECT TO CHANGE WITHOUT NOTICE.
VERTICAL DIMENSIONS ARE BASED ON A 40" TRUCK FRAME HEIGHT.
532-16 & 672-20 TRUCK DIMENSIONAL DATA
Page 9

Page 10
Roto-Spread 532-16 Truck 672-20 Truck
Capacity (Heaped) 532 Cubic Foot 672 Cubic Foot
Struck Level 385 Cubic Foot
2,880 Gallon
480 Cubic Foot
3,450 Gallon
Spreader Weight (Empty) 10,830 Lbs 12,187 Lbs
Load Capacity (Net) 34,000 Lbs 43,000 Lbs
Inside Dimensions 48” High, 71.5” High, 192” Long 48” High, 71.5” Wide, 240” Long
Outside Dimensions 96.5” Fender Width 96.5” Fender Width
Overall Length 274” 322”
Overall Height (Gate Low-
ered)
137” (Based on 40” truck frame) 137” (Based on 40” truck frame)
Overall Height (Gate
Raised)
157” (Based on 40” truck frame) 157” (Based on 40” truck frame)
Unload Speed/Time Variable Variable
Discharge Height 48” 48”
Spread Coverage 12’ to 30’ 12’ to 30’
Recommended HP 300 (Minimum) Truck 375 (Minimum) Truck
Beater Drive PTO Driven Triple Gear Pump
Driving 2 High Torque Motors
PTO Driven Triple Gear Pump
Driving 2 High Torque Motors
Belt Drive/Rear Gate Uses truck PTO Hydraulics. Belt
Drive Speed Regulated by an Ad-
justable Flow Control Valve.
Uses truck PTO Hydraulics. Belt
Drive Speed Regulated by an Ad-
justable Flow Control Valve.
Beaters Two 35” Diameter High Speed
Vertical Beaters with Spinners,
and Double Flighting
300 RPM @ 2000 PTO RPM
Two 35” Diameter High Speed
Vertical Beaters with Spinners,
and Double Flighting
300 RPM @ 2000 PTO RPM
Belt Material & Chain 5/16” 350 PSI PVC Belt & C102.5
Combination Chain for Belt and
Retention Gate Drive System
5/16” 350 PSI PVC Belt & C102.5
Combination Chain for Belt and
Retention Gate Drive System
Floor, Gate & Side Walls High Density Polyethylene on
Floor, Side Walls and End Gate
High Density Polyethylene on
Floor, Side Walls and End Gate
SPECIFICATIONS

Page 11
PRINCIPLE OF OPERATION
Two vertical spinning beaters at the rear of the spreader expel manure in a uniform spread pattern. Each
beater is driven by a hydraulic motor. A PTO driven hydraulic power supply on the spreader provides power
to the beaters. The hydraulic pump is two stage thereby supplying independent power to each beater motor.
A wide heavy duty belt covers the box floor. At the front of the spreader, this belt is attached to a sliding
gate. At the rear, this belt goes around a winged idler pulley and on the lower side is connected to a drive
chain. At the front of the spreader, this chain is driven by a hydraulic motor driving a planetary gear box
and sprocket that is powered by the tractor hydraulic system. See figure 1. Driving the belt toward the rear
of the spreader pulls the sliding gate rearward to move the load toward the beaters. A manually adjustable
flow control in the drive chain motor circuit regulates the speed the gate moves.
An end gate at the rear of the spreader is raised and lowered by two hydraulic cylinders, powered by the
tractor hydraulic system. See figure 5. This gate must be lowered during loading to prevent packing of the
material into the beaters and to help prevent leakage during transport.
PRE OPERATION CHECKLIST
1. Carefully study and understand this manual.
2. Do not wear loose-fitting clothing, which may catch in moving parts.
3. Always wear protective clothing and substantial shoes.
4. Keep wheel lug nuts or bolts tightened to specified torque.
5. Give the unit a visual inspection for any loose bolts, worn parts or cracked welds, and make necessary
repairs. Follow the maintenance safety instructions included in this manual.
6. Check to see that no obstructions are present in the spreader prior to start up.
7. Be sure that there are no tools lying on or in the spreader.
8. Do not use the unit until you are sure that the area is clear, especially children and animals.
9. The ball valve in the suction line must be open prior to engaging PTO (handle parallel with valve
housing).
10. Because it is possible that this spreader may be used in dry areas or the presence of combustibles,
special precautions should be taken to prevent fires and fire fighting equipment should be readily
available.
11. Don’t hurry the learning process or take the unit for granted. Ease into it and become familiar with your
new spreader.
12. Practice operation of your spreader and its attachments. Completely familiarize yourself and other
operators with its operation before using.
13. Do not allow anyone to ride on the inside or the outside of the spreader unit at any time.
HIGHWAY AND TRANSPORT OPERATION
1. Adopt safe driving practices.
2. Always drive at a safe speed relative to local conditions and ensure that your speed is low enough for an
emergency stop to be safe and secure. Keep speed to a minimum.
3. Reduce speed prior to turns to avoid the risk of overturning.

Page 12
4. Avoid sudden uphill turns on steep slopes.
5. Do not drink and drive.
6. Comply with state and local laws governing highway safety.
7. Plan your route to avoid heavy traffic.
8. Be a safe courteous driver. Always yield to oncoming traffic in all situations, including narrow bridges,
intersections, etc.
9. Be observant of bridge loading ratings. Do not cross bridges rated lower than the gross weight at which
you are operating.
10. Watch for obstructions overhead and to the side while transporting.
11. Make allowances for increased length and weight of the spreader when making turns, stopping the unit,
etc.
OPERATION
LOADING
Park the spreader for loading. Put the truck in PARK or NEUTRAL and apply the parking brake.
Make sure the sliding front gate is all the way to the front of the spreader and close the hydraulic rear gate
before loading.
It is unlawful to allow any manure spillage to occur on public roadways. Be sure rear gate is fully closed and
sliding gate scrapers are adjusted so no liquid leakage occurs. Do not heap load such that manure is allowed
to fall off spreader during transporting on roadways.
Load the spreader. The moisture content will determine how full it can be loaded. See SPECIFICATIONS for
capacity. Solid manure can generally be loaded level to slightly heaped. High moisture slurries are heavier
and loading may be limited.
UNLOADING
1. Press beater switch to “ON” (WHENEVER THE BEATER IS USED ALWAYS PLACE SWITCH IN THE
ON POSITION BEFORE ENGAGING THE PTO).
2. Press “ON” button.
3. Engage PTO.
4. Press rear gate switch “UP” to raise gate completely.
5. When gate is completely raised return rear gate switch to center.
6. Press belt switch “BACK” to start floor.
7. Adjust belt speed “DIAL” for desired floor speed.
8. Select correct gear to maintain engine RPM to 1500-2100 and give the desired rate of application to the
field. (A combination of gear selections and “DIAL” settings will fine tune the rate of application).
9. Start forward motion of truck when “SPREAD” light comes on.
10. When “SPREAD” light goes out the load is emptied.

Page 13
11. Press belt switch “FORWARD” to return floor to the front.
12. When floor and front gate are at the front of the spreader return the belt switch to the center position.
13. Press the rear gate switch to “DOWN” to lower gate to the closed position.
14. Return the rear gate switch to center when rear gate is completely closed.
15. Press beater switch to “OFF”.
16. This completes the cycle of off loading the material.
The “wings” may be adjusted to change the width of the spread pattern. Normally a “mid position” setting is a
good place to start. (Note “wings” may be removed of desired for close quarter operation in pens”.
If unloading semi-liquid material the rear gate may be raised in incremental amounts to control the rate of
discharge.
NOTE!
BEFORE MOVING THE FRONT GATE, THE REAR GATE MUST BE RAISED
COMPLETELY TO PREVENT DAMAGE TO THE FRONT GATE.
Unit is equipped with a beater stall warning horn. The intensity of the horn can be adjusted by turning a
“muffler” on the face of the horn. Intermittent sounding of the horn during operation is normal. If the horn
sounds continuously the belt speed dial should be reset to a lower number.
Vary belt speed with the consistency of the material being spread. A lower setting might be desired for sticky
or frozen material. A higher setting for dry and light material.
Spread Pattern
The spread pattern is affected by the speed of the rotating beaters. The two beater hydraulic motors are
powered independently by a two stage hydraulic pump on the spreader. This pump is powered by the truck
PTO. The spreader is de-signed to give a uniform spread pattern when the truck engine is operated at 1500—
2100 RPM for typical materials. Adjustment of the beater speed and spread pattern is regulated by the engine
speed.
DISCONNECT PTO DRIVE SHAFT AND HYDRAULIC HOSES BEFORE CLEANING, ADJUSTING,
LUBRICATING, OR SERVICING THIS MACHINE.
1. The spreader must be thoroughly cleaned for extended storage. Manure is acidic and will damage paint
and cause rusting of metal components.
2. Allow the spreader to completely unload.
3. Return the sliding gate to the front of the spreader.
4. To clean the spreader, raise the rear gate.
5. Hose off manure from the outside and inside of the spreader. Completely clean manure from moving
mechanisms such as the beaters, winged pulley, sliding gate, chain drive and rear gate. Remove
TURN OFF ALL POWER DURING CLEANING AND INSPECTION. DO NOT USE POWER
TO MOVE ANY COMPONENTS OR TO DISCHARGE MATERIAL WHILE CLEANING OR INSPECTING.
STORAGE AND CLEANING

Page 14
accumulation in confined areas or pockets that trap manure.
6. Avoid directing high pressure spray directly on bearings, seals and flow control valve.
7. Keep high pressure spray moving on painted surfaces. Sustained spray on cracks or scratches in paint
can result in paint peeling.
8. Allow machine to dry.
9. Lower rear gate completely down before storing spreader.
10. Inspect the spreader for loose connections, damaged hydraulic hoses or connections and for other
damaged components. Repair if necessary so the spreader is ready for future operation.

Page 15
PUT THE TRACTOR IN PARK, AP-
PLY THE PARKING BRAKE, TURN OFF ENGINE
AND
REMOVE IGNITION KEY BEFORE CLEANING, AD-
JUSTING, LUBRICATING OR SERVICING THIS
MACHINE.
READ THE FOLLOWING BEFORE
WELDING ON THIS MACHINE
1. When welding on your spreader, do not allow the
current to flow through the ball bearings or the
roller chains. Ground directly to the item being
welded.
2. The alternator on the truck should always be dis-
connected if the spreader is not disconnected
from the towing vehicle.
LUBRICATION
Bearings
(See figure 1)
Grease 2 lower beater bearings and 2 wing pulley
bearings every 100 hours of operation with 2 pumps
of grease.
MAINTENANCE
FILL PLUG
ON TOP
FIGURE 2. PLANETARY GEARBOX
CHECK LEVEL PLUG
HYDRAULIC MOTOR
PLANETARY GEARBOX
Planetary Gearbox
(See figure 2)
Oil Specification: Mobil Delvac Synthetic Gear Oil
75W-90
. There is a check plug half way up on the gearbox.
Maintain the oil level to this check plug. Fill plug is
WINGED PULLEY
BEARING
(ONE EACH SIDE)
LOWER BEATER
BEATING
GREASE ZERKS
FIGURE 1. BEARING LUBRICATION

Page 16
HYDRAULIC SYSTEM
(See figure 3)
1. Oil Specification: CITGO Transgard Tractor
Hydraulic Fluid - Material Code 633310001 .
2. Capacity: 40 gallon.
3. Maximum allowable operating temperature
240°F.
4. Check the oil level in the reservoir daily. It
should be maintained 1” from the top level on
the sight gauge.
5. Oil is added through a filter screen inside the
filler neck. Before filling, remove the screen,
inspect and clean if required.
6. Carefully clean dirt from the return filter head
and element. Replace the filter element every
500 hrs of operation.
7. Drain reservoir and refill with new oil every
2000 hrs or annually, whichever occurs first. If
the oil becomes contaminated and appears
milky colored, replace immediately.
8. Every 100 hrs of operation, inspect all hydraulic
hoses, hose connections, pump seals and mo-
tor seals for leakage. Tighten loose connections
and replace damaged components.
9. A ball valve is provided at the bottom of the res-
ervoir where the suction hose is connected.
Turn this valve off to service hydraulic compo-
nents. This prevents draining of the reservoir,
however it is necessary to catch the oil that
drains from disconnected hoses into a suitable
container for proper disposal. Always check
and refill the reservoir as required when servic-
ing is completed.
Rear Gate Flashing
(See figure 4)
1. Swinging gate flashing strips are clamped to
both vertical ends of the rear gate frame. These
strips must bear against the vertical box sides
to minimize leakage.
2. To adjust, loosen the six 3/8" carriage bolts
clamping the flashing.
3. Move the flashing strips so they contact against
the box wall and retighten bolts.
FIGURE 3. HYDRAULIC RESERVOIR
SIGHT &
TEMP GAUGE
FILLER CAP
W/SCREEN
RETURN FILTER
ELEMENT
RESERVOIR
SUCTION SCREEN
BALL VALVE
REAR GATE
FLASHING STRIP
CLAMP STRIP
FIGURE 4. REAR GATE FLASHING

Page 17
ADJUSTMENTS
Sliding Gate Scrapers
(See figure 5)
1. A high density polyeth-
ylene scraper bar is
clamped to the vertical
edges of the sliding
gate. These scrapers
must contact the vertical
box walls to clean mate-
rial.
2. To adjust, loosen the
seven 3/8 carriage bolts
clamping the scraper.
3. Move the scrapers so
they contact against the
box wall and retighten
bolts.
Drive Chain Slack
(See figure 6)
1. To adjust the floor drive chain, run the sliding
gate all the way to the rear of the spreader
until it stops.
2. Remove the front panel of the sliding gate.
3. A threaded adjuster rod is provided where the
drive chain attaches to the sliding gate. It is
factory preset, but may require adjustment
with usage.
4. Loosen the two 7/8” hex nuts on the end of
the threaded rod. Tighten the inner nut until
the forty eight Belleville washers are almost
fully compressed (approximately 4-1/2”).
Tighten the outer nut against the inner to lock
the adjustment.
5. Replace the front panel.
NOTE: The Belleville washers are assembled in
“tail to tail” pairs and stacked per figure 11.
4-1/2”
FIGURE 6.
BELLVILLE SPRING WASHER STACK
FIGURE 5. ADJUST DRIVE CHAIN & SLIDING GATE
SCRAPER
CLAMP
SCRAPER
INNER & OUTER
7/8” NUTS & SPRING
STOP WASHER
DRIVE
CHAIN
48 BELLEVILLE
SPRING WASHERS
SLIDING GATE
THREADED
ADJUSTER ROD

Page 18
Adjust Spread Pattern
(See figure 7)
The spread pans at the rear of the spreader can be set for wide spreading or they can be hinged inward to
spread straight behind the spreader.
ADJUST HERE
FIGURE 7. ADJUST SPREAD PATTERN

Page 19
532-16 & 672-20 Spreader Assembly ........................................................................ 20
Truck Box Assembly ................................................................................................... 22
Box sides & Floor ....................................................................................................... 24
Beater Assembly ........................................................................................................ 26
Sliding Gate Assembly ............................................................................................... 28
Rear Gate Assembly1 ................................................................................................ 29
Spreader Hydraulic Parts ........................................................................................ 30-35
Spreader Hydraulic Control Block .............................................................................. 34
Spreader Electrical Parts ............................................................................................ 36
Truck Mount Kit Without Scales ................................................................................. 37
Truck Mount Kit With Scales ...................................................................................... 38
Control Box & Armrest Assembly ............................................................................... 40
Decals ........................................................................................................................ 41
Truck Fenders ............................................................................................................ 42
REPAIR PARTS
532-16 & 672-20
TABLE OF CONTENTS

4
3
7
6
10
11
2
1
13
15
14 16
5
9
12
8
Page 20
532-16/672-20 TRUCK SPREADER ASSEMBLY