Page 1
Tractor Drive
PTO Generators
OWNERS MANUAL
INSTALLATION AND OPERATION INSTRUCTIONS
35PTOC-3
40PTOC-4
45PTOC-17
50PTOC-3
55FPTOC-3
75FPTOC-4
75FPTOC-17
SAFETY FIRST
READ THIS MANUAL BEFORE OPERATING YOUR GENERATOR.
50PTOC-3
60706-125
Page 2
Read and understand all instructions in this
manual before starting and operating the
generator set.
USING THIS MANUAL
Congratulations on your choice of a Winco generator set.
You have selected a high-quality, precision-engineered
generator set designed and tested to give you years of
satisfactory standby service.
To get the best performance from your new generator
set, it is important that you carefully read and follow the
operating instructions in this manual.
Should you experience a problem please follow the
“Things To Check” near the end of this manual. The warranty
listed in this manual describes what you can expect from
WINCO should you need service assistance in the future.
PROPER USE AND INSTALLATION
You must be sure your new generator set is:
* Properly serviced before operating
* Operated in a well ventilated area
* Exhaust gases are dispersed safely
* Wired by a qualified electrician
* Operated only for its designed purposes
* Used only by operators who understand its operation
* Properly maintained
COPY YOUR MODEL AND SERIAL NUMBER HERE
No other WINCO generator has the same serial number as
yours. It is important that you record the number and other
vital information here, if you should ever need to contact us on
this unit it will help us to respond to your needs faster.
MODEL____________________________________
TABLE OF CONTENTS
INTRODUCTION i
GUIDE TO PRODUCT SAFETY 1
BASIC INFORMATION
Unit Capabilities 2
PREPARING THE UNIT 2
Unpacking the unit 2
Assembly 2
INSTALLATION
Foundation Mounting 3
Trailer Mounting 3
ELECTRICAL CONNECTIONS 4
OPERATION 5
Pre-Start Checks 5
Starting Procedure 6
Stopping 6
MAINTENANCE 7
Lubrication 7
Cleaning 8
Storage 8
Trouble Shooting Table 8
36 MONTH WARRANTY 10
SERIAL NUMBER____________________________
PURCHASE DATE____________________________
DEALER___________________________________
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SAFETY INFORMATION
This generator set has been designed and manufactured to
allow safe, reliable performance. Poor maintenance,
improper or careless use can result in potential deadly
hazards; from electrical shock, exhaust gas asphyxiation, or
fire. Please read all safety instructions carefully before
installation or use. Keep these instructions handy for future
reference. Take special note and follow all warnings on the
unit labels and in the manuals.
ANSI SAFETY DEFINITIONS
______________________________________________________
DANGER:
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury. This signal
word is to be limited to the most extreme situations.
______________________________________________________
______________________________________________________
WARNING:
WARNING indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
______________________________________________________
______________________________________________________
CAUTION:
CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate injury. It
may also be used to alert against unsafe practices.
______________________________________________________
NOTE:
CAUTION is also used on the unit labels and in this
manual to indicate a situation that could result in serious
damage or destruction of the equipment and possible
personal injury.
______________________________________________________
1. ELECTRIC SHOCK- The output voltage present in this
equipment can cause a fatal electric shock. This equipment
must be operated by a responsible person.
a. Do not allow anyone to operate the generator
without proper instruction.
b. Guard against electric shock.
c. Avoid contact with live terminals or receptacles.
d. Use extreme care if operating this unit in rain or
snow.
e. Use only three-prong grounded plugs and
extension cords.
f. Be sure the unit is properly grounded to an
external ground rod driven into the earth.
g. Do not make or break electrical connection under
load.
2. FIRE HAZARD- Gasoline, diesel and other fuels always
present a hazard of possible explosion and/or fire.
a. Keep a fire extinguisher nearby and know its
proper use. Fire extinguishers rated ABC by
NFPA are appropriate.
3. DEADLY EXHAUST GAS - Exhaust fumes from any engine
contain carbon monoxide, an invisible, odorless and deadly
gas that must be mixed with fresh air.
a. Operate only in well ventilated areas.
b. Never operate indoors.
4. NOISE HAZARD - Excessive noise is not only tiring, but
continual exposure can lead to loss of hearing.
a. Use hearing protection equipment when
working around this equipment for long periods of time.
b. Keep your neighbors in mind when permanently
installing this equipment.
5. CLEANLINESS- Keep the generator and surrounding area
clean.
a. Remove all grease, ice, snow or materials that
create slippery conditions around the unit.
b. Remove any rags or other material that could
create potential fire hazards.
6. SERVICING EQUIPMENT- All service, including the
installation or replacement of service parts, should be
performed only by a qualified technician.
a. Use only factory approved repair parts.
b. Do not work on this equipment when fatigued.
c. Use extreme caution when working on electrical
components. High output voltages from this equipment
can cause serious injury or death.
d. Always avoid hot mufflers, exhaust manifolds, and
engine parts. They all can cause severe burns instantly.
7. INSTALLATION- Installing a PTO generator is not a “do-ityourself” project. Consult a qualified, licensed electrician or
contractor. The installation must comply with all national,
state, and local codes.
a. Never operate the PTO drive generator without having
it properly mounted to a concrete base or approved trailer.
b. Never connect the PTO generator to an existing
electrical system without installing an isolation transfer switch.
c. Always insure the drive shaft is straight and level
before operating the generator.
8. OPERATION - PTO drive shafts (Tumbling Bars) have
many inherent dangers, extereme caution must be exercised
when using them.
a. NEVER
in operation.
b. Keep all safety guards and shields in place and
securely tightened.
c. Never operate a drive shaft that has been damaged
or had the safety shield removed.
d. Never step over a drive shaft while it is running.
e. Never wear a necktie, loose articles of clothing, or
anything else that can be caught in moving parts.
f. Never try to stop a turndrive shaft with your hand or
your foot.
allow children around a drive shaft when it is
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Description
The WINCO PTO drive generator will provide, depending on
the unit purchased, 120/240V single phase, 120/240V three
phase or 120/208 three phase 60Hz electrical service when
direct-driven. Tractor or vehicle power take-off shafts, can be
used for driving these generators.
person making the delivery make note of the loss or damage
on the freight bill, or sign the consigner’s memo of the loss or
damage. Contact the carrier for claim procedures.
When loss or damage is noted after delivery, segregate the
damaged material, and contact the carrier for claim procedures.
NOTE: The prime mover which drives the generator must be
capable of delivering approximately 2 HP per 1000 watts
output from the generator. Observe input RPM specifications.
The generator may be foundation mounted for use as standby
power source, or trailer mounted, and used as portable
electrical power sources for areas where commercial power
is not readily available, such as out buildings.
This generator includes a load sensing transformer which
provides extra motor starting power, a color coded voltmeter to
warn against high or low voltage, three output power receptacles, an overload protection circuit, and an electronic
excitation circuit. To reduce maintenance problems, the
coupling between the generator input shaft and rotor consists
of precision helical gearing rather than a chain link drive. The
input shaft is splined, and is 1-3/8 in diameter.
The factory thoroughly tests each of these generators before
shipment. All are continuous duty rated.
IMPORTANT: THE MANUFACTURER STRONGLY RECOMMENDS RUNNING THE GENERATOR UNDER LOAD AT
LEAST ONCE A MONTH IN ORDER TO EVAPORATE ANY
ACCUMULATED MOISTURE CONDENSATION
UNPACKING
CAUTION: Equipment Damage
DO NOT invert generator during unpacking. The Gearcase
contains oil which will leak out if inverted during unpacking.
“Concealed damage” means damage to the contents of a
package which is not evident when the package is delivered
by the carrier, but which is discovered later. The carrier or
carriers are responsible for merchandise lost or damaged in
transit. The title to the goods rests with the consignee when
the goods are shipped FOB factory, and only the consignee
can legally file claims. Two years are allowed in which to file
suit after a claim is disallowed in writing by the carrier.
Assembly
The only assembly work required after unpacking the generator is to assemble and wire the load disconnect plug, which is
contained in a bag in the subpack carton packed in the
generator crate. The bag contains an instruction sheet, a plug
body, three or four brass pins (large pin for neutral line), and a
small envelope. The small envelope contains an allen
wrench, retainer pins, and set screws.
To wire the load disconnect plug, use the following type of
cable:
Generator Size,
Model AWG Insulation
35PTOC-3 1 600V, THW
40PTOC-4 4 600V, Neoprene
45PTOC-17 4 600V, Neoprene
50PTOC-3 1 600V, THW
55PTOC-3 1 600V, THW
75PTOC-4 1 600V, THW
75PTOC-17 1 600V, THW
Unpack the generator as follows:
1. Remove the carton.
2. Examine the unit for damage.
3. Find the small subpack carton packed in the large carton.
Be careful not to throw away the subpack carton with the large
carton.
4. Open the subpack carton and make sure it contains:
a. Generator instruction manual
b. Load disconnect plug (disassembled, in bag)
5. Remove the four bolts which hold down the generator feet
to the pallet.
6. Lift the generator from the pallet by means of the lifting eye
on the top of the generator.
7. Inspect the generator carefully for freight loss or damage. If
loss or damage is noted at time of delivery, require that the
7315-000
To assemble and wire the load disconnect plug,
proceed as follows (see Figure 1):
1. Cut cables to the required length.
2. Strip off insulation 7/8" back from one end of each cut-tolength cables.
3. Start threading a set screw into each pin.
4. Insert the stripped end of one cable fully into one of the
brass pins, and tighten the set screw firmly to secure the
cable end in the pin.
Octopus Plug AssemblyFigure 1
Page 2
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DANGER: Equipment Damage
If cable-to-pin connections are loose, arcing and heat damage
to equipment can result.
5. Insert the brass pin (with cable) into the plug body, and line
up the retainer pin holes in the brass pin with those in the plug
body.
6. Insert the retainer pin, and tap it firmly into place. The
retainer pin will protrude approximately 3/8" when fully seated.
(See Figure 1.)
7. Repeat steps 4 through 6 for each brass pin. Make sure to
connect the neutral lead (cable), identified and color coded in
conformance with the applicable local electrical codes, to the
large diameter pin (“N”) on the plug.
E. All four generator mounting pads must rest firmly on the
foundation. Install shims if necessary to even out the foundation under the mounting pads then bolt the generator firmly in
place.
TRAILER MOUNTING
Mount the generator on a trailer if you plan to use it as a
portable power source. See Figure 4. When selecting or
building a trailer to mount the generator, consider the following points:
A. The trailer construction must be strong enough to support
the generator.
WARNING: Electrical Shock
DURING THE NEXT STEP, THE LOAD DISCONNECT PLUG
SHOULD NOT BE PLUGGED INTO ITS RECEPTACLE. ALSO,
MAKE SURE THAT THE EQUIPMENT TO WHICH THE PLUG
LEADS (CABLES) ARE BEING CONNECTED IS NOT ENERGIZED (LIVE).
8. Strip the insulation off the free end of each of the plug leads
(cables), and connect them to the load transfer switch (or
directly to the load).
Installation
FOUNDATION MOUNTING
Mount the generator on a foundation if it is to be used as a
permanent or standby power source (see Figure 2). See
“TRAILER MOUNTING” if generator will be used as a portable
power source (see Figure 3). When planning a foundation
consider the following points:
A. The foundation location should enable aligning the drive
shaft (tumbling bar) in a straight or nearly straight line between the power take-off and the generator input shaft.
Misalignment must be less than 15 degrees during generator
operation, even though the mechanical design of the tumbling
bar would allow greater misalignment.
B. The design of the trailer must enable the trailer to remain
stable during operation, and to resist tipping caused by
generator starting and reflected load torque.
WARNING: Personal Injury & Equipment Damage
TRAILER MAY TIP OVER AND CAUSE INJURIES IF
WHEELS ARE NOT SPACED FAR ENOUGH APART.
C. The trailer height and mounting position of the generator on
the trailer should enable aligning the drive shaft (tumbling bar)
in a straight or nearly straight line between the power take-off
and generator input shafts. Misalignment must be less than
15 degrees during generator operation, even though the
mechanical design of the tumbling bar would allow greater
misalignment.
D. The generator mounting area of the trailer bed should be
flat.
All four generator mounting pads must rest firmly on the trailer
bed. Install shims if necessary to even out the bed under the
mounting pads, then bolt the generator firmly in place.
B. The foundation must be solid enough to absorb generator
starting and reflected load torque during operation.
C. The foundation surface should be flat.
D. Space is required around the generator for mounting
switching devices, making connections, and for servicing.
Figure 2
Trailer, for Portable Operation
Figure 3
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ELECTRICAL CONNECTIONS
CAUTION:
Only qualified electricians should install electrical wiring.
Wiring must conform to all applicable national, state, and local
codes. (Reference: National Fire Protection Association
Manual No. 70, National Electrical Code.)
DANGER: PERSONAL INJURY
IF THE GENERATOR IS TO BE USED AS A STANDBY
POWER SOURCE, A SPECIAL DISCONNECT SWITCH
MUST BE INSTALLED TO SEPARATE THE GENERATOR
AND THE COMMERCIAL POWER LINES. THE
DISCONNECT MUST ISOLATE THE GENERATOR FROM
THE COMMERCIAL POWER LINES AND THE LOAD WHEN
THE GENERATOR IS ON STANDBY, AND MUST ISOLATE
THE COMMERCIAL POWER LINES FROM THE LOAD AND
THE GENERATOR WHEN THE GENERATOR IS SUPPLYING
POWER. SEE FIGURE 5.
Figure 5
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Typical Connection Methods for Generator Power Service
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Operation
OUTPUT POWER AVAILABLE AND LOAD DETERMINATION
Before using the generator, read and understand the following
information.
MOTOR LOAD SINGLE PHASE THREE PHASE
Motor Amps Amps Amps Amps
Horsepower 115V 230V 208 240
(Running Amps) (Running Amps)
1/4 5.8 2.9
1/3 7.2 3.6
1/2 9.8 4.9 2.3 2.0
Generator output current (amperage) is internally limited by
three circuit breakers. If too much demand is placed on a
generator output (if you try to drive too many motors with it, for
example), one of the circuit breakers will trip, cutting off the
output in order to protect the generator.
A 15 amp push-to-reset circuit breaker protects the 120V
duplex receptacle output circuit. 15 amps is the total limit for
both outputs of the duplex receptacle.
A 50 amp two pole switch type circuit breaker protects the
240V receptacle output circuit.
A large two pole (three pole for three phase) switch type main
circuit breaker protects the generator windings and output
circuits, including the load disconnect receptacle outputs. (The
load disconnect receptacle is the large round black rubber
receptacle on the generator output panel.)
To aid in determining how much load can be applied to the
generator, and how it should be distributed among the
generator output receptacles, the following formulas may be
useful. Get load voltage, current, and wattage from the
nameplates on the equipment in the load.
(Load Current, in amps) x (Load Voltage) = (Load Wattage)
AMPS X VOLTS = WATTS
WATT/1000 = kW
(Load Current in amps) = (Load Wattage)/(Load Voltage)
3/4 13.8 6.9 3.2 2.8
1 16 8 4.15 3.6
1-1/2 20 10 6.0 5.2
2 24 12 7.8 6.8
3 3417 119.6
5 56 28 17.5 15.2
7-1/2 80 40 25 22
10 100 50 32 28
20 62 54
40 120 104
Compiled from N.E.C. manual.
To use the full capacity of the generator without tripping its
circuit breaker(s), start the motors in the load one at a time,
highest starting current motor first, next highest second, etc.
Use the preceding table as a source of general information
about motor running current requirements. For more specific
information, see motor nameplate or motor manufacturer’s
catalog.
PRE-START CHECKS
WARNING: Personal Injury
When working on or around these generators, do not wear
loose fitting clothing or any articles that may get caught in
moving parts.
Example:
250W, 120V floodlight load = 250W/120V= 2 amps (approx.)
NOTE:
Electric motors require much more current to start than to run.
Commonly, the current rating given on a motor nameplate is
the full load (running) current required by the motor, not its
starting current, which is a lot higher. Motor starting current
requirements vary greatly, by motor size and type. Repulsioninduction type motors are the easiest to start, typically using 1
1/2 to 2 1/2 times as much current to start as to run; capacitor
type motors usually require 2 to 4 times as much current to
start as to run; split-phase type motors are the hardest to start,
normally using 5 to 7 times as much current to start as to run.
1. Visually inspect the generator. Check for:
a. Correct mounting
b. Physical damage
c. Debris in cooling vents and screens (could
cause generator to overheat).
IMPORTANT: The manufacturer recommends that, if the
generator has been stored for any length of time, before using
it, the operator remove the control box cover and cooling fan
screen, then inspect the generator for rodent nests or other
objects that could cause generator binding and/or
overheating. See “Cleaning” portion of Maintenance section.
2. Check gear case oil level. (See Figure 6.) Case should be
filled with oil to plug marked “OIL LEVEL.” Fill or remove oil as
required.
NOTE: EITHER TOO LITTLE OR TOO MUCH OIL CAN HARM
THE EQUIPMENT.
See “Lubrication” portion of Maintenance for oil specifications.
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energized by the generator. Make sure the connections are
correct and are tight.
8. Make sure all loads are turned off. Do not start the generator under load.
GENERATOR STARTING PROCEDURE
1. With the power take-off drive disengaged, start the engine
which will drive the generator. Run the engine long enough to
warm it up before proceeding, so that it will run smoothly and
achieve full power under generator load.
2. With engine idling, engage the power take-off drive.
Figure 6
3. Make sure the drive shaft (tumbling bar) is assembled with
its universal joint knuckles “synchronized,” as illustrated in
Figure 7. If knuckles are not synchronized, the bar will chatter
when rotating, which will cause the generator output voltage to
flicker.
DANGER: Personal Injury
Figure 7
POWER TAKE-OFF MUST BE DISENGAGED AT THIS TIME.
3. Watch the voltmeter on the generator and slowly increase
engine speed until the output reaches approximately 260 volts
(in green portion of voltmeter scale). For 208 volt generators
the output should reach 215 to 220 volts.
4. With engine and generator running smoothly, switch on the
electrical load while watching the voltmeter.
NOTE: Equipment Damage
If the load includes motors turn them on one at a time, highest
starting current motor first, next highest second, etc.
Readjust engine throttle to keep generator output under load
at 240V or 208 depending on the generator (in green portion
of voltmeter scale). If engine is equipped with speed governor,
it may automatically readjust the throttle as the load changes
and keep the generator output at the proper level. However,
some governors are not sensitive enough to maintain proper
output under changing load, and in such cases the throttle will
have to be manually readjusted .
GENERATOR SHUTDOWN PROCEDURE
1. Switch off electrical load.
2. Reduce speed of engine driving generator to idle.
4. Couple the tractor to the generator with the drive shaft
(tumbling bar). Couple the tumbling bar to the generator input
shaft first, then to the power take-off shaft. Check alignment,
tractor, power take-off shaft (tumbling bar), and generator input
shaft should form a straight (or nearly straight) line, with less
than 15° misalignment between the shafts. Misalignment will
cause generator output voltage to flicker.
CAUTION:
Make sure that all tumbling bar lock pins are engaged and
that all safety shields are in place before operating the PTO
generator.
5. Make sure no binding exists in generator or gear box. If
binding is found, locate the cause and correct it before
proceeding.
6. Make sure that the electrical loads to be driven by the
generator will not draw more current than the ratings of the
generator receptacle or cord set which will supply the current.
7. Check all electrical connections in the system to be
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3. Disengage power take-off drive, and allow generator to
coast to a stop.
WARNING: Personal Injury
Never try to manually stop the generator. Always let it coast
until it stops.
5. Shut off the engine.
4. Disconnect drive shaft (tumbling bar)
power take-off end first, then generator end.
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MAINTENANCE
The following chart lists various symptoms of poor generator
operation with possible causes for them and the appropriate
corrective action. You will need a volt-ohm meter or test light to
check some of the causes. For some of the other causes you
will need to check generator speed. To check generator speed
you can use a frequency meter, a tachometer, or a 120V-60Hz
electric clock and a correctly operating wrist watch. (Run the
electric clock on generator power and compare the clock’s
second hand movement with that of the wrist watch. They
should run at the same speed. If clock runs faster, generator
speed is too high, and vice versa.)
CAUTION: Equipment Damage
Most electrical equipment in North America operates satisfactorily at frequencies between 59 and 61 Hz (cycles per
second.) Operating the generator at frequencies outside that
range may cause damage to the generator and/or to electrical
equipment driven by the generator.
NOTE:
Do not over lubricate the universal joints.
See Figure 8 for recommended lubrication schedule for the
coupling shaft.
Check the generator gear case oil level before each use of the
generator. Maintain the oil level at oil level plug height. (Figure
6 illustrates oil level plug location.) The generator is shipped
with lubricant in the gear case. Specifications for gear case
lubricant are:
API Service: GL-5
Grade: SAE 85W-9O-140
Amount: 1 pint
The following kinds of oil are recommended for use in the
generator gear case: Mobil SAE 85W90-140 API Service GL-5,
Sunoco/DX XL80W90-140 Kendal Three Star 85W-140,
Amoco 85W140 or equivalent.
GENERAL
Routine preventive maintenance minimizes costly repairs and
generator down-time. Before each use, inspect the generator:
gear case oil level should be correct, cooling vents and
screens should be clear, and generator mounting hardware
should be tight. Clean and inspect the generator after storing it
for long periods, and after using it in extremely dusty conditions or in severe weather, such as rain or blowing snow.
LUBRICATION
The generator bearings are factory lubricated and sealed, and
require no further lubrication.
The splined generator input shaft should be cleaned and
lubricated with a thin film of grease before and after each use
of the generator.
The drive shaft (tumbling bar) requires greasing. Keep the
universal joints in the coupling shaft free from grease and dirt
buildup.
CAUTION: Equipment Damage
Do not overfill generator gear case. Overfilling causes overheating and oil seal failure.
Change the oil at least once every six months. Change it more
often if you use the generator in bad weather. Use the following procedure to change generator gear case oil (see Figure
6):
1. Remove gear case breather. Soak breather in cleaning
solvent, then allow it to dry.
2. Remove oil level check plug.
3. Remove the oil drain plug, drain the oil into a clean oil
resistant container, 1 quart or larger. Check the oil for metal.
Fine metal dust in the oil does not indicate trouble, but metal
chips do. Dismantle the gear case and look for damaged
gears if you find metal chips in the oil.
4. Replace the oil drain plug. Refill the gear case through the
breather port with new oil of the recommended type. Fill the
case up to oil level check plug height. (It will take about 1 pint.)
5. Replace the oil level check plug.
6. Replace the breather.
Figure 8
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CLEANING & INSPECTING THE GENERATOR
Use a vacuum cleaner or dry low pressure compressed air
(regulated at 25-35 PSI) to clean the generator periodically.
WARNING: Equipment Damage
DO NOT CLEAN THE GENERATOR WHILE IT IS RUNNING.
Proceed as follows:
3. Vacuum or blow dust and other debris from inside generator and control box.
4. With panel cover removed, inspect the brushes for wear,
and inspect the wiring for correct routing, fraying insulation,
and secure connections.
5. Replace panel cover and cooling fan shroud.
GENERATOR STORAGE
1. Remove ventilated control box cover. Vacuum or blow vents
and screen clear of dust or debris. Wash them down with
cleaning solvent if necessary.
2. Remove cooling fan shroud. Vacuum or blow dust from
screen and fan blades. Wipe them off with cleaning solvent if
necessary.
Before storing the generator, apply a heavy coat of grease to
the splined input shaft. Store the generator in a sheltered
area, where it is protected against snow, rain, and excessive
dust.
TROUBLE SHOOTING TABLE
SYMPTOM CAUSE(S) CORRECTIVE ACTION
No output 1. Circuit breaker open. 1. Reset circuit breakers, replace if defective.
voltage. 2. Defective voltmeter. 2. Check output with another meter, replace meter if defective.
3. Short circuit in the load. 3. Disconnect the load. Check voltage at receptacle cord set.
Check motors, appliances and load leads for short circuit.
Repair short.
4. Defective receptacles. 4. Remove panel cover and check for voltage to the
receptacles. Replace defective receptacles.
5. Loose (or broken) wires or 5. Remove panel cover and check all wiring and connections.
connections in control box. Tighten and/or repair where necessary.
6. Defective rectifier. 6. Test rectifier. Replace if defective.
7. Dirty slip rings. 7. Clean and polish. Use 00 sandpaper or crocus cloth,
never use emery paper.
8. Brushes binding in holders. 8. Check brushes for swelling; replace defective brushes;
clean brush holders.
9. Shorted or open rotor. 9. Measure rotor resistance. Replace rotor if open or shorted.
10.Shorted or open stator. 10. Measure between leads for open or short. Replace stator if
defective.
11.Open transformer. 11. Connect or tighten primary and secondary leads. Check
secondary for open circuit. Replace transformer if defective.
12.Rotating field polarity 12. Check by interchanging F (—) and F (+) leads at the
incorrect. brushes. Inner slip ring is positive F (+) and must be
connected to the (+) terminal of the rectifier. Flash the field
with 12 volts DC.
Low voltage. 1. Engine speed too slow. 1. Check engine speed. Increase RPM if necessary.
2. Generator overloaded. 2. Reduce load if it is higher than the rated capacity of the
generator. (See generator nameplate).
3. Inadequate engine horsepower. 3. Generator requires 2 HP/1000 watts output. Obtain
larger engine if necessary.
4. Incorrect field excitation. 4. Check for worn brushes and weak or broken brush springs;
(No-load output low.) replace as required. Check input AC voltage to rectifier.
Check rectifier output DC voltage to positive DC brush. If no
DC voltage is present at the brush, replace the rectifier.
Check for dirty slip rings. Clean them if they are dirty.
5. Connection of current 5. Have qualified service technician recheck and correct the
transformer secondary leads connections.
not correct.
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SYMPTOM CAUSE(S) CORRECTIVE ACTION
High voltage. 1. Engine speed too fast. 1. Check engine speed for correct input RPM.
2. Connection of current 2. Have qualified service technician recheck the connections.
transformer secondary leads not
correct.
Output voltage 1. Tumbling bar (coupling shaft) 1. Reduce tumbling bar misalignment to less than 15 degrees.
flickering or misalignment.
fluctuation. 2. Engine speed not constant. 2. Engine governor may be worn or improperly adjusted. Set or
repair defective governor.
3. Loose connection in field circuit. 3. Check and tighten connections.
4. Tumbling bar U-joints not 4. Reassemble tumbling bar; see Figure 7.
synchronized.
Excessive 1. Power take-off misalignment 1. Correct misalignment. It should be less than 15 degrees.
vibration. excessive.
2. Loose mounting nuts and bolts 2. Tighten mounting nuts and bolts; repair hold-down stud
or hold-down studs. mountings.
3. Universal joints in coupling 3. Repair or replace defective parts.
shaft worn or dry.
4. Defective bearings. 4. Check for possible causes. Replace defective bearings.
Generator 1. Poor ventilation. 1. Clean ventilation and cooling fan screens.
overheating. 2. Generator overloaded. 2. Reduce load, then check voltage and current.
3. Shorted turns in field or 3. Replace defective components.
stator windings.
Oil leak. 1. Loose plug in gear case. 1. Tighten plug.
2. Defective seal, gasket, or 2. Replace seal(s), gaskets or plugs. Maintain correct oil level.
plug in gear case. .
Page 960706-125
7315-000
Page 12
WINCO PTO GENERATORS
36 MONTH LIMITED W ARRANTY
WINCO, Inc., warrants for thirty-six months from date of shipment, that it will repair or replace at its
option, for the original user, the whole or any part of the product found upon examination, by WINCO
at its factory at 225 South Cordova Avenue, Le Center, Minnesota, or by any factory-authorized
service station, to be defective in material or workmanship under normal standby use (average less
than 50 hours per month) and service.
For warranty service, return the product within 36 months from the date of purchase, transportation
charges prepaid, to your nearest factory-authorized service station or the WINCO factory.
There is no other express warranty. To the extent permitted by law, any and all warranties, including
those of merchantability and fitness for a particular purpose, are limited to 36 months from date of
shipment, and liability for incidental or consequential damages or expenses is excluded. Some
states do not allow limitations on the duration of an implied warranty, and some states do not allow
the exclusion or limitation of incidental or consequential damages, so that above limitation or
exclusion may not apply to you. This warranty gives you specific legal rights; you may have other
rights which vary from state to state.
This warranty is limited to bench labor and parts only, no allowance will be made for travel time, or
removal and reinstallation of the PTO unit.
WINCO does not warrant drive lines, trailer tires, receptacles, or certain other component parts of
the product installed by others, since such items are warranted by their manufacturers.
WINCO does not warrant modifications or alterations which were not made or authorized by the
WINCO factory and which affect the stability or reliability of the product.
WINCO does not warrant products which have been exposed to misuse and/or negligence or have
been involved in an accident.
WINCO does not warrant products which have been installed in such a manner as not to protect them
from the adverse environmental conditions (water, mud, insects, etc.) or have not been kept clean.
WINCO reserves the right to change or improve its products without incurring any obligations to
make such changes or improvements on products purchased previously.
60706-125 7315-00
225 South Cordova Avenue
Le Center, Minnesota 56057
1-800-733-2112 / 507-357-6821
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