NUHN MAGNUM User manual

OWNER’S MANUAL
NUHN INDUSTRIES LTD.
PO BOX 160 Phone: [phone]
SEBRINGVILLE, ONTARIO Fax: [phone]
CANADA Email: [e-mail]
N0K 1X0 Web: www.nuhn.ca

MAGNUM
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Contents
General Description ...………………………………………………………...…… 3
Magnum Terminology ………………………………………………………....…. 3
Operation ……………....…………………………………………………………….… 4
Front Pump
Switching From Spread To Agitate ………………………………….…. 4
Volume Control ……………………………………………………….….. 5
Deflector Plate Adjustments ……………………………………………….……. 5
Maintenance …………....………………………………………………………...…… 6
Front Pump Maintenance .………………………………………………………. 6
Access To Tank …………...………………………………………………….….. 6
In-Tank Wash System …....…………………………………………………..…. 6
Tire Pressure and Maintenance ..………………………………………………. 7
Wheel Bolt Torque ..…………………...….…………………………………..…. 7
Axle ..………………………….………...….…………………………………..…. 7
Storage Tips ………………….………...….…………………………………..…. 7
Safety ………..…………....………………………………………………………...…… 8
Warranty .………………………………………………..………………………...…… 12
Agricultural Driveline Safety Booklet

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General Description
Magnum Terminology
Figure A
A
B
C
D
E
F
G
H
I
J
K
L
A
B
C
D
E
F
G
H
I
J
K
L
Lights
Hopper
Tires
Undercarriage
Spread Pipe
Sprinkler System
Float
Clean-Out Door
Front Pump
PTO Shield
Tongue
Jack
It is the owner’s responsibility to make sure the spreader and operator comply with all local and
state laws.

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Operation
Front Pump
The FRONT PUMP SYSTEM allows the operator the option of agitating the manure in the
spreader, spreading the manure or agitating and spreading at the same time. It also allows
volume control on the spread, from light to heavy. As well, it creates a pressurized unloading
system so that the spread is even, whether the tank is full or near empty.
Front Pump: Switching From Spread To Agitate
Figure B
A
B
C
D
E
F
A
B
C
D
E
F
Ladder
Clean Door
Spread Plate
Deflector
Discharge
Bauer Clamp
Figure C
A
CLOSED
SPREAD
B
C
D
A
A
B
C
D
Cleanout Door
Fan & Seal
Seal & Valve (Pump Lever)
Switch to CLOSED or SPREAD
Figure D

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REPLACEMENT PARTS
ITEM NO.
PART NO.
DESCRIPTION
1
100-107
Quad Coupling Hose - Elbow - 6"
2
100-323
Quad Coupling Hose - Band Clamp - 12"
3
100-324
Quad Coupling Hose Flange - 12"
100-375
Chain - 0.5" x 38.5" & Links (Magnum Quad Safety Chain)
4
100-868
Quad Train - Hose Saddle
5
100-897
Washer - Flat - 0.4375”
6
100-903
Nut - Nylock - 0.4375”
7
100-906
Nut - Nylock - 0.875”
8
100-910
Bolt - Hex Head - 0.4375” x 1.5” - GR5
9
100-982
Gasket - 12" Float & Primary Trap
10
101-220
Gasket - 7.5" Square
11
101-420
Hose - 6" Quad Coupling (Red Stripe) Length 98"
12
101-421
Hose Kevlar Cover - 6" Quad Coupling (12.5" x 102")
101-422
Quad Safety Chain with Link - between Tractor and Tank
13
101-920
Quad Train - Pintle Hitch Hook
14
101-921
Quad Train - Pintle Hitch Eye - 0.875 hole
15
101-922
Hose Kevlar Cover - 12" Quad Coupling (26" x 70")
16
101-923
Chain - 0.5" x 38.5" G70 (Top Load Quad Safety Chain)
TOP LOAD SPREADER

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ITEM NO.
PART NO.
DESCRIPTION
17
102-203x0.17
Hose - Vacuum - White PVC - 2" x 2”
18
102-203X0.58
Hose - Vacuum - White PVC - 2" x 7”
19
102-203X1.08
Hose - Vacuum - White PVC - 2" x 13”
20
102-238
Bolt - Hex Head - 0.875” x 3.5 - GR8
21
102-308
Hose - 12" Quad Coupling (Orange Stripe)
22
102-334
Hose Clamp - 2.5" - Mikalor - 68-73
23
102-610
Chain - 0.5" Connector Link for Safety Chain
24
103-638
Hose Clamp - 6" - 162-174 double bolt
25
103-798
Quad Train - Hose Saddle - Rubber - 12" x 24" x 0.625"
ITEM NO.
PART NO.
DESCRIPTION
102-308
Hose - 12" Quad Coupling (Orange Stripe)
101-922
Hose Kevlar Cover - 12" Quad Coupling (26" x 70")
103-798
Quad Train - Hose Saddle - Rubber - 12" x 24" x 0.625"
100-374
Chain & Links - 0.5" x 48" (Vacuum Quad Safety Chain)
16
101-924
Chain - 0.5" x 48" G70 (Chain only)
102-610
Chain - 0.5" Connector Link
101-920
Quad Train - Pintle Hitch Hook
101-921
Quad Train - Pintle Hitch Eye - 0.875 hole
For generic Top Load parts used on the Quad Vac, see Magnum Replacement Parts
For generic Vacuum parts used on the Quad Vac, see Vacuum Replacement Parts.
VACUUM
16

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A double acting 8” stroke hydraulic cylinder connects the cylinder bracket and the pump lever
(B). For in-tank agitation, the cylinder is extended and the lever is in the closed position. Keep
the PTO Shaft running. To spread, the cylinder is contracted and the lever points to spread.
When the cylinder is partially extended, the pump is both agitating and spreading.
Front Pump: Volume Control
See Figure D on the preceding page. The pump lever (B) controls the volume of the spread. The
spread is heaviest when the cylinder is contracted and the lever is pointing to spread. The
volume becomes increasingly lighter as the cylinder is extended.
When filling the manure spreader, the cylinder should be extended and the lever is at closed.
See the MAINTENANCE section in this manual for maintenance requirements on the front
pump.
Deflector Plate Adjustments
Hitch Plate Adjustments
1. Changing the angle of the deflector plate
will modify the spread pattern. Lowering the
deflector plate will produce a finer, wider
spread. Raising the deflector plate will give
more material in the center.
The angle can be adjusted by changing the
adjustment screw (A).
2. As well, a slide plate is bolted onto the
end of the discharge pipe. Loosen the bolts,
and slide the plate to decrease the size of the
opening. The increased pressure will produce a
finer spread pattern.
A
Figure E
There are several holes (B) on a hitch and tongue which
allow adjustments to fit various drawbar heights. The
spreader should lean slightly to the front when hooked to
the drawbar, and the tank is fully loaded.
Figure F

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Maintenance
Front Pump Maintenance
Access To Tank
There are two clean-out doors which provide access to the tank. One is located on the front of
the spreader (A on Figure D on page 4) and the other is on the rear (B on Figure B on page 4).
These doors can be opened to remove foreign objects from within the tank. They also allow
access to the tank’s interior for washing out and for ventilation. Remove these doors during
storage to dry the interior of the tank.
The elbow on the back of the tank can be removed to access or cleanout the pipe that carries
the manure from the front of the spreader the deflector plate (F on Figure C on page 4).
In-Tank Wash System
A
This Pipe plug is for flushing
out the front pump with a water
hose. This is recommended before
storage at the end of the season.
A clean out access is located
on the front of the pump. It can
be removed to dislodge any foreign
objects that may not pass through
the pump.
The two pillow block bearings
on the fan shaft require daily
A
B
B
C
C
greasing. Pump the gun slowly to avoid popping the seals. There is a seal between the tank and
the bearings. It contains three seals. If this or a bearing is replaced, tighten the bearing first,
then the seal. DO NOT OVERTIGHTEN. Grease the universals. Pull the PTO Shaft apart and
grease the tubes.
The drain latch on the bottom of the pump should be opened after using the spreader to
prevent freezing.
D
D
Figure G
At each baffle in your Nuhn Magnum, there is a sprinkler.
When you are finished drawing manure, hook up a garden
hose to the port at the front of the tank and open the valve.
Put at least a foot of water in the tank and turn on the in-tank
mixing and go spread the water on the field. When finished,
remove the clean-out doors and the interior of the tank will
dry. If you do this every time you finish drawing manure, tank
life and trade-in value will increase dramatically.

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Tire Pressure and Maintenance
Follow the manufacturer’s recommendations for your particular tire.
Wheel Bolt Torque
Tighten the 3/4” bolts on the 10-bolt rim to 300 foot-pounds.
Tighten the 5/8” bolts on the 8-bolt rim to 100 foot-pounds.
If you don’t have a torque wrench:
300 foot-pounds = 100 lbs of pressure on a 3 ft. handle
100 foot-pounds = 35 lbs of pressure on a 3 ft. handle
Axle
The four grease fittings on the axle should be greased before initial use of the spreader and then
the seasonally.
Storage Tips
1. At the end of the season, rinse out the spreader. Put at least 18” of water in the tank,
agitate, and then spread out the water.
2. Remove the clean-out doors to dry the tank’s interior.
3. Open the drain latch at the bottom of the front pump to prevent freezing.
4. The front pump lever should be left in the spread position to drain the side.
5. Secure the jack and block the tires.
6. Wheel hubs should have approximately ten shots of grease.
Safety
Brakes are available as an option on the manure spreader and are recommended on the 5000
model and larger.
2. Transportation problems when towing a full load.
Caution should be used when handling, controlling, and braking with the extra weight of a full
spreader behind the tractor. Speed should also be reduced.
Wheel nuts should be checked for tightness frequently the first few loads and then
periodically. The main spindle nut should be tightened and then loosened by a quarter
turn. Over tightening will result in bearing failure.
If tractors with less than the recommended horsepower are used, the manufacturer
recommends either the installation of brakes on th
e spreader
or
a reduction in maximum
traveling speed.

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3. Drain for front pump.
Park spreader with cylinders contracted to prevent rusting. The valve controlling the actuator can
have pressure to one side only –pressure side. Do not remove the check valve to prevent this.
Ideally, the weight of trailed equipment, without brakes, should not exceed the weight of the
towing vehicle. The spreader, when loaded, does exceed the weight of the towing tractor;
however, some of the trailing weight is transferred onto the tractor via the tongue and the tractor
drawbar.
4. Flashing Light Kit
If the liquid manure spreader is towed on public roads when lighting is required, and the unit
obstructs the warning lights of the tractor, lights must be mounted on the rear of the tank for the
safety of the operator and the public.
5. Filling Hole Cover
When transporting manure on a public road, Section ASAE R317 of the Safety Standards
recommends that the filling hole be covered securely for the protection of the public against
injury. A secure cover for the filling hole is available as an option on the spreader.
Section ASAE S365.IT of the Safety Standards advises that the minimum stopping
distance for a vehicle combination from an initial speed of 15 mph is 50 feet. It is
recommended that the maximum traveling speed of a fully loaded spreader not exceed 12 mph
to obtain a minimum stopping distance of 50 feet. If tractors of less than recommended
horsepower are used, without spreader brakes, maximum speeds should be reduced below 12
mph.
Before towing a loaded spreader without brakes, the operator should be certain that
the brakes on the towing tractor are in good working condition.
The operator must inspect the drawbar mounting area (i.e. mounting bolts) before using
the spreader and then check periodically.

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6. Safety Chains
The safety chain and the end fitting must be greater in minimum tensile strength than the gross
loaded weight of the spreader. The chain should be fastened to the towing and towed machines
by a positive means that cannot be separated inadvertently. The chain should have no more
slack, when in use, than necessary to permit proper movement of the machines.
Table 1 shows proper chain data. Figures 1, 2, and 3 show proper attaching methods.
TABLE 1 –Chain Data
MINIMUM
SYSTEM
ULTIMATE
TENSILE
STRENGTH
MINIMUM
CHAIN LINK
CLEARANCE
DIAMETER
(FIG 3)
MINIMUM
FITTING
HOLE SIZE
RECTANGLE
(FIG 3)
MAXIMUM
INTERMEDIATE
SUPPORT
DIMENSION A,
B, C (FIG 1&2)
MINIMUM
CHAIN
LENGTH
(FIG 3)
10, 100 lbs/ft
1.3 in
1.3 in x 2.6 in
6.0 in
59.0 in
20, 200 lbs/ft
1.5 in
1.8 in x 4.0 in
6.0 in
59.0 in
30, 300 lbs/ft
1.8 in
1.8 in x 4.0 in
8.0 in
59.0 in
It is imperative to use a safety chain between the spreader and the tractor when
traveling on the road. In the event of a hitch failure, the chain is necessary to
protect others on the road. As well, it is recommended that a chain be used
whenever the spreader is in use.

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7. Safety Decals on the Spreader
Hydrogen sulfide is formed as a result of the decomposition of organic material. It is a
clear, colourless gas and can be recognized in small concentration by its rotten egg
odour. However, human ability to smell this gas disappears rapidly as a result of
continued exposure and with increased exposure.
Liquid manure systems can produce relatively large concentrations of hydrogen sulfide (as well
as carbon dioxide). Many barns are constructed with slatted floors directly over the liquid
manure tank. As the liquid rises and may eventually be forced above the floor. Confined
livestock are in danger under these circumstances. The greatest danger period from hydrogen
sulfide occurs during the agitation of the tanks. The turbulence created may cause trapped
gases to be liberated and may force gas up into the barn.
Hydrogen sulfide is classified as a toxic chemical. In high concentration, it will lead to
almost instantaneous poisoning and death. Exposure to smaller concentrations
may cause nausea, coughing, headache, dizziness, and eye irritation.
All sources of entry into a liquid manure system should be secured. Prior to agitation and
pumping, all people and animals should be evacuated from the barn. Thorough ventilation
should be provided during agitation and pumping process.
NOTE* Safety screen should always be in the fill hole.
NO ONE should ever enter a liquid manure holding tank or a spreader without
following these rules for confined space entry:
•wash out spreader using wash system and re circulate
•remove cleanout doors
•blow air in the top hopper using a large fan for at least 30 minutes
•use a Hydrogen Sulfide Detector
•use a self controlled breathing device
•use a life line
DO NOT go into the tank after a downed person, you will be overcome too.

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NO ONE is immune to the danger. USE EXTREME CAUTION.
USE CAUTION WHEN WORKING NEAR ROTATING PTO SHAFT.
Loose clothing or objects may be caught up and pulled into the rotating shaft.
Never reach over the shaft for this same reason. Keep a safe distance from this
danger zone when the shaft is in motion.
USE CAUTION WHILE OPERATING NEAR MOVING PARTS. Avoid pinch areas
or places where moving parts could entangle or injure.

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Warranty
All Nuhn equipment carries
•a complete five year structural warranty for farm use without sand (2 years
with sand)
•a one year structural warranty for commercial use without sand (0.5 of a
year with sand)
•a three year warranty on pump impellor, housing and bearing assembly for
farm use without sand (1 year with sand)
•a one year warranty on pump impellor, housing and bearing assembly for
commercial use without sand (0.5 of a year with sand)
This warranty is against defects in materials and workmanship
EXCLUDED from this warranty are
•replacement parts for items worn through normal use
•product failure due to improper operation (ex. Abuse or improper
maintenance)
Electronic controls, tires, vacuum pumps and electric motors carry warranties from their
respective manufacturer.
All attachments (injectors) are covered for defects in material and workmanship for one year for
farm use and 0.5 of a year for commercial use.
This does not include normal wear through use.
WARRANTY RECORD
FARM NAME ____________________
DELIVERY DATE ____ / ____ / ____
MODEL # _______________________
SERIAL # ________________________

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ACKNOWLEDGEMENT
SAFETY ALERT SYMBOL
FORWARD
A WORD TO THE USER/OPERATOR
YOU HAVE TOO MUCH TO LOSE
THE FUNCTION OF PTO DRIVELINE AND SHIELDING
THE OPERATOR’S MANUAL
PRE-OPERATION REQUIREMENTS
PRE-OPERATION REQUIREMENTS (CON'T)
PRE-OPERATION REQUIREMENTS (CON'T)
OPERATING RECOMMENDATIONS AND PRECAUTIONS
OPERATING RECOMMENDATIONS AND PRECAUTIONS (CON'T)
MAINTENANCE
MAINTENANCE (CON'T)
MAINTENANCE (CON'T)
REMEMBER, SAFETY FIRST
BOOKLET INFO
BACK COVER
ACKNOWLEDGEMENT
This booklet was prepared by members of the Agricultural Driveline Manufacturers
Association (ADMA). We also wish to acknowledge the many contributions of safety
professionals from farm equipment manufacturers, universities, state safety
organizations and equipment industry associations in the development of this safety
manual.
SAFETY ALERT SYMBOL
This Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!
The Safety Alert Symbol identifies important safety messages on machines, safety
signs, in manuals, or elsewhere. When you see this symbol, be alert to the possibility
of personal injury or death. Follow the instructions in the safety message.

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Why is SAFETY important to You?
3 BIG REASONS:
* ACCIDENTS DISABLE AND KILL
* ACCIDENTS COST
* ACCIDENTS CAN BE AVOIDED
FORWARD
This Safety Manual is intended to point out some of the basic safety situations which
may be encountered during the normal operation and maintenance of your driveline
system and to suggest possible ways of dealing with these conditions. This manual is
not a substitute for the manufacturer’s manual(s).
Additional precautions may be necessary depending on attachments used and
conditions at the worksite or in the service area. The manufacturer has no direct
control over machine application, operation, inspection, lubrication, or maintenance.
Therefore, it is YOUR responsibility to use good safety practices in these areas.
The information provided in this manual supplements the specific information about
your machine that is contained in the manufacturer’s manual(s). Other information
which may affect the safe operation of your machine may be contained on safety
signs, in vocational-agricultural and extension training materials, or in insurance
requirements, employer’s safety programs, safety codes, local, state/provincial, and
federal laws, rules, and regulations.
IMPORTANT: IF YOU DO NOT HAVE THE MANUFACTURER’S MANUAL(S) FOR
YOUR PARTICULAR MACHINE, GET A REPLACEMENT MANUAL FROM YOUR
EMPLOYER, EQUIPMENT DEALER, OR FROM THE MANUFACTURER OF YOUR
MACHINE. KEEP THIS SAFETY MANUAL AND THE MANUFACTURER’S
MANUAL(S) WITHIN THIS MACHINE. READ AND UNDERSTAND THE
MANUFACTURER’S MANUAL(S).
A WORD TO THE USER/OPERATOR
It is YOUR responsibility to read and understand this safety manual and the
manufacturer’s manual(s) before operating your equipment.
In reading this manual, you will note that any illustration depicting an unsafe work
procedure or situation is labeled both with the words “wrong” and the mark of an
on the illustration. Each illustration is also numbered and the same number appears
in the text in parenthesis. This number is placed at the end of the written text that
refers to the illustration.
Remember that you are the key to safety. Good safety practices not only protect you
but also protect the people around you. Study this manual and the manufacturer’s
manual(s) for your implement. Make them a working part of your safety program.
Practice all other usual and customary safe working precautions and above all:
REMEMBER, SAFETY IS UP TO YOU
YOU CAN PREVENT SERIOUS INJURY OR DEATH

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YOU HAVE TOO MUCH TO LOSE
The area between the tractor and the PTO-driven implement is a DANGER zone. This
can be one of the most dangerous places on your farm –for you, every member of
your family, and employees.
We know that almost every driveline accident happens during the day and near the
barnyard.
Certain operating conditions are particularly dangerous:
* If your equipment is missing guards or shields…
* If you are not paying attention…
* If children are playing near where you are working… (
* If you are operating a stationary piece of equipment…
* If you are wearing loose-fitting clothes… (2)
* If you are tired or in a hurry to get finished…
Do you know that most driveline accidents happen when drivelines are operated
without shields or guards or they are improperly maintained?
THE FUNCTION OF PTO DRIVELINE AND SHIELDING
What is the function of a PTO driveline and shielding system?
The PTO driveine transmits power from the tractor to the implement. It must be able
to operate safely across a wide range of performance demands and different
environmental conditions. The driveline shielding system can help you ensure your
own personal safety and the safety of others. The purpose of the driveline shielding
system is to help prevent inadvertent contact and entanglement in the driveline.
The total shielding system includes the tractor master shield, driveline guards, and
implement shield.
Because you and others are around drivelines, the purpose of this booklet is to help
you use drivelines carefully and thoughtfully and to remind you to:

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Page 18
keep all guards and shields in place. The tractor master shield and
implement shield must be installed to work with the driveline guard and
provide the intended coverage. (3)
THE OPERATOR'S MANUAL
* Read the manual! (4)
* Understand the contents!
* Heed all safety messages in the operator’s manual and safety signs on machines
PRE-OPERATION REQUIREMENTS
* Be sure to disengage the PTO shaft and turn off the tractor before making any
inspections or working around the PTO driveline.
* Follow the manufacturer’s recommendation for attaching the implement to the
tractor. Make sure the distance from the tractor PTO shaft to the hole in the drawbar
is the distance recommended by the implement manufacturer in the operator’s
manual. (5)
* If your drawbar has an offset end, be sure it is in the down position so it won’t
interfere with the driveline guard when you are using PTO-driven equipment. Make
sure your three-point hitch and drawbar are correctly positioned so neither interferes
with the driveline. Lock the three-point hitch when you are not using it.
* Use a drawbar hitch pin with a low head. When the hitch pin or other parts of the

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Page 19
drawbar connection are too close to the driveline, field operation on uneven or
terraced terrain will often result in guard damage. (6)
PRE-OPERATION REQUIREMENTS (CON'T)
* Don’t weld any protruding device onto the head of your hitch pin. Be especially
careful to remove clevis straps mounted on top of the drawbar.
* The driveline must be attached securely to the tractor and the implement. If a set
screw or bolt is the recommended means for attachment, make sure it is the correct
length and follow the original manufacturer’s recommendations. Don’t attach
drivelines with bolts or pins which are longer than recommended. They can not only
catch loose clothing, boot-laces or a pant cuff, but, while spinning rapidly, they can
cause serious bodily injury.
* The driveline shielding system is one of the most important components for your
safety and the safety of others. Make sure all guards are in good repair and in place
prior to hooking up your driveline. This will greatly reduce the risk of an accident,
serious injury, or even death.
* Make sure the driveline guard can rotate independent of the shaft a full rotation
and can telescope freely. (7)
* If the driveline has been provided with a retaining chain, make sure the chain is in
place and has been properly connected to the tractor or the implement attachment
point.
* Make sure that any shear pins are correctly installed and that the proper
replacement pins are readily available. Check any other overload devices to ensure
they are operable and have been serviced according to the manufacturer’s
instructions.
PRE-OPERATION REQUIREMENTS (CON'T)
* For stationary equipment which is not attached to the tractor, proper spacing must
be maintained. After setting the tractor brake, block the wheels on both the tractor
and implement to insure proper spacing at all times. (8)

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Page 20
* Before operating, determine what the recommended PTO operating speed is for the
implement and make sure it will not be exceeded. Consult implement operator’s
manual.
OPERATING RECOMMENDATIONS AND PRECAUTIONS
* Be certain only a properly trained and physically able person will operate the
machinery.
* Wear close fitting clothes and keep long hair tied back or under a hat.
* Don’t allow any hydraulic hoses, electric cords, ropes, or other items to drape over
the driveline guard. This could result in damage to the hoses, cords, or guards.
* When you turn, be careful not to hit the driveline with tractor tires. This often
happens in non-working conditions.
* Never allow guards to pull apart. Guards could be cut or crushed when pushed
back together.
* Be certain to disengage PTO shaft and to turn off the tractor before making any
operational maintenance inspections or repairs. Keep clear of the machine until all
parts have stopped moving.
* Don’t remove the tractor master shield or the implement shield and continue to
operate.
* Remember that a protrusion anywhere is a potential entanglement hazard. (9)
OPERATING RECOMMENDATIONS AND PRECAUTIONS (CON'T)
* Don’t remove the driveline guard or expose guarded parts of the driveline by
cutting or enlarging the grease access holes.
* Be aware of special precautions for stationary equipment. Avoid contact with
drivelines in this close working environment. Do not step on or over a driveline. (10)