Page 1
COMPACT SERIES
TRACTOR DRIVE GENERATOR
W10PTOS/A
Page 2
TABLE OF CONTENTS
SAFETY INFORMATION 3
SPECIFICATIONS 4
UNPACKING 4
INSTALLATION 4
FOUNDATION MOUNTING 4
TRAILER MOUNTING 5
THREE POINT HITCH MOUNTING 5
ELECTRICAL CONNECTIONS 6
LOAD DISCONNECT PLUG INSTALLATION 7
PRE-START CHECKLIST 7
GENERATOR STARTING PROCEDURE 8
PTO ALIGNMENT 8
STORAGE & MAINTENANCE REQUIREMENTS 9
LUBRICATION 9
SERVICE DIAGNOSIS 10
COMPLETE UNIT ASSEMBLY ILLUSTRATION 11
WIRING DIAGRAM 12
RECEPTACLE PANEL ASSEMBLY 14
TWO WHEEL TRANSPORT 15
WINCO LIMITED WARRANTY 16
Copy you model and serial number here.
MODEL ______________________________________
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 about this unit it will help us to
respond to your needs faster.
SERIAL NUMBER _____________________________
PURCHASE DATE _____________________________
DEALER _____________________________________
CAUTION
FOLLOW THE INSTRUCTIONS IN THE OWNER’S MANUAL SPECIFICALLY WHEN PUTTING THIS PTO GENERATOR INTO
SERVICE.
IMPORTANT
ALL STANDBY POWER PLANTS INCLUDING TRACTOR DRIVEN GENERATORS SHOULD BE PERIODICALLY EXERCISED. FOR PROPER MAINTENANCE OF YOUR TRACTOR DRIVEN GENERATOR, IT SHOULD BE OPERATED FOR ONE
HOUR CARRYING RATED LOAD AT LEAST TWICE A YEAR. THIS WILL ASSURE THAT YOUR PTO GENERATOR IS IN
OPERATING CONDITION AND READY FOR USE WHEN THE NEED ARISES.
PARTS LIST, PARTS DRAWINGS, AND WIRING DIAGRAM PERTAINING TO YOUR UNIT ARE ENCLOSED WITH THIS
MANUAL.
This manual covers the latest compact portable tractor driven Power Take Off (PTO) generator model from Winco.
This 10,000 watt generator is designed to provide120/240V single phase electrical power for standby and utility service when commercial power is interrupted, inaccessible or impractical. This PTO unit has a cast iron gear case with
a 1-3/8” – 6 spline, 540 rpm rated input shaft (unit operating speed is 515 RPM) and brushless, heavy-duty 3600
rpm, 2 pole, low waveform distortion generator.
This compact PTO generator unit is designed to provide reliable electrical power for customers who already have a
compact utility tractor with 20 to 30 horsepower and a 540 rpm rated PTO shaft. The PTO unit is a cost-effective way
of providing needed electrical power without the cost or added maintenance of a dedicated drive engine. Primary applications for these PTOs are for infrequent or medium duty loads where the unit will normally be operated less than
50 to100 hours per year. Typical uses might be for farm, ranch or home standby or portable eld power away from
convenient utility or where running an extension cord is impractical. The compact PTO units are built to last, but are
not intended for prime power (continuous or sole source) applications.
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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 re. 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 destruc-
tion 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 pres-
ent a hazard of possible explosion and/or re.
a. Keep a re 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 re hazards.
6. SERVICING EQUIPMENT- All service, including the
installation or replacement of service parts, should be
performed only by a qualied 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.
7. INSTALLATION- Installing a PTO generator is not a “do-it-
yourself” project. Consult a qualied, 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, extreme caution must be
exercised when using them.
a. NEVER allow children around a drive shaft when it is 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 turning drive shaft with your hand or
your foot.
g. ALWAYS connect the shield anti-rotation chain to the
tractor safety shield
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DESCRIPTION
UNPACKING
The WINCO rotating eld power take-off generators are designed primarily for hobby/small farm use as a standby electrical
power supply, utilizing the power take-off of a tractor or truck
as the prime mover. This PTO drive generator will provide
120/240V single phase, 60Hz electrical service when properly
driven.
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 specications.
This generator may be mounted in many different fashions. The
three most popular are foundation mounted, trailer mount or 3point hitch mounted, for used as a standby or portable electrical
power source. Your application will dictate how you may want to
mount it.
This generator includes a color coded voltmeter to warn against
high or low voltage, and two output power receptacles with
individual circuit breakers for your protection. 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 a 1 3/8 in. diameter 6 spline shaft.
The factory thoroughly tests each generator 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 AND TO KEEP THE UNIT IN
GOOD WORKING ORDER.
CAUTION: Equipment Damage
DO NOT invert generator during unpacking. The Gearcase contains oil which will leak out if inverted during unpacking.
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 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 person making the delivery make note
of the loss or damage on the freight bill, or sign the
consignee’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.
SPECIFICATIONS
Model Number W10PTOS/
Wattage 10000
Amperage 42
Input Speed 515 RPM
Generator Speed 3600 RPM
Input Shaft 1 3/8” - 6 spline
Tractor PTO Hp Required 20
Gear Lube
Volume 16 ounces
Type 85/90W-140
Features
* Brushless, low harmonic design with skewed rotor and
damper windings for minimal load noise
* Capacitor Excitation
* Dual voltage - 120/240 volt output
* 4 wire Load connection plug for convenient full load 120/
240 volt output cord set
* 15 Amp duplex convenience receptacle
* Large face Voltmeter for proper speed setting and
adjustment
“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 le
claims. Two years are allowed in which to le suit after a claim is
disallowed in writing by the carrier.
INSTALLATION
FOUNDATION MOUNTING
Mount the generator on a foundation if it is to be used as a
permanent or standby power source. See “TRAILER MOUNTING” or “THREE POINT HITCH MOUNTING” if generator will be
used as a portable power source. 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 5 degrees during generator operation, even
though the mechanical design of the tumbling bar would allow
greater misalignment.
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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 10
degrees during generator operation, even though the mechani-
cal design of the tumbling bar would allow greater misalign-
ment.
D. The generator mounting area of the trailer bed should be
flat.
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 10
degrees during generator operation, even though the mechani-
cal design of the tumbling bar would allow greater misalign-
ment.
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.
WINCO THREE POINT HITCH
Optional 3-Point Hitch Part Number TPH240
WARNING: Personal Injury & Equipment Damage
WHEN USING THE 3-POINT HITCH ASSEMBLY ALL THREE
POINTS MUST BE ATTACHED TO THE TRACTOR. FAIL-
URE TO DO SO WILL CAUSE THE GENERATOR TO TIP
WHEN LIFTING IT DAMAGING BOTH THE T-BAR AND THE
GENERATOR.
A. The three point hitch must be attached to the tractor at all
times during operation.
B. When operating the generator the three point hitch and
generator must be sitting on flat level ground. All four deck
pads must be in constant contact with the ground at all
times. This will reduce the vibration in both the generator
and the tumbling bar.
C. For safety the generator must be bolted to the three point
hitch deck using all four mounting bolts
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 5
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 at.
B. The foundation must be solid enough to absorb generator
starting and reected load torque during operation.
C. The foundation surface should be at.
D. Space is required around the generator for mounting switching devices, making connections, and for servicing.
E. The generator mounting bracket must rest evenly and rmly
on the foundation. Install shims if necessary to even out the foun-
dation under the mounting pads then bolt the generator rmly in
place.
TRAILER MOUNTING
Optional Trailer Part Number TDM76
Mount the generator on a trailer if you plan to use it as a portable
power source. 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.
B. The design of the trailer must enable the trailer to remain
stable during operation, and to resist tipping caused by generator
starting and reected load torque.
WARNING: Personal Injury & Equipment Damage
TRAILER MAY TIP OVER AND CAUSE INJURIES IF WHEELS
ARE NOT SPACED FAR ENOUGH APART.
All four generator mounting pads must rest rmly on the trailer
bed. Install shims if necessary to even out the bed under the
mounting pads, then bolt the generator rmly in place.
WINCO THREE POINT HITCH
Optional 3-Point Hitch Part Number TPH240
WARNING: Personal Injury & Equipment Damage
WHEN USING THE 3-POINT HITCH ASSEMBLY ALL THREE
POINTS MUST BE ATTACHED TO THE TRACTOR. FAILURE
TO DO SO WILL CAUSE THE GENERATOR TO TIP WHEN
LIFTING IT DAMAGING BOTH THE T-BAR AND THE GENERATOR.
A. The three point hitch must be attached to the tractor at all
times during operation.
B. When operating the generator the three point hitch and
generator must be sitting on at level ground. All four deck pads
must be in constant contact with the ground at all times. This will
reduce the vibration in both the generator and the tumbling bar.
C. For safety the generator must be bolted to the three point
hitch deck using all four mounting bolts
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ELECTRICAL CONNECTIONS
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 Associa-
tion Manual No. 70, National Electrical Code.)
DANGER: PERSONAL INJURY
IF THE GENERATOR IS TO BE USED AS A STANDBY
POWER SOURCE, A MANUAL TRANSFER SWITCH
MUST BE INSTALLED TO SEPARATE THE GENERATOR
AND THE COMMERCIAL POWER LINES. THE SWITCH
MUST ISOLATE THE GENERATOR FROM THE COM-
MERCIAL 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 6
CAUTION:
Only qualied 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 MANUAL TRANSFER SWITCH MUST
BE INSTALLED TO SEPARATE THE GENERATOR AND THE
COMMERCIAL POWER LINES. THE SWITCH 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 6
FIGURE 6
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A properly rated and installed double throw manual power isola-
Make sure blades
tion transfer switch must be used with a standby generator. The
transfer switch isolates the load from the power line and allows
you to safely operate your loads without endangering the power
line repair crew. See page 6.
The load, connected to the normal terminals of the transfer
switch, is energized by the normal power line when the switch is
in the normal position. The generator, connected to the emergency terminals of the switch, furnishes power when the switch
is in the emergency mode position.
There are two ways to install a manual transfer switch. The rst
shown on the left side of page 6 is to install the switch between
the watt-hour meter and the normal distribution panel. As with
any system you must install an entrance rated breaker before the
manual transfer switch. The manual transfer switch must in all
cases be equal to or greater than the rating of the entrance rated
breaker.
The second way to install the system is to purchase and install
an emergency distribution panel and move the circuits you wish
to back up to the new distribution panel. In this case the manual
transfer switch only has to be sized to the amperage of the circuit
breaker in the main distribution panel that is feeding it. See the
right hand drawing on page 6.
Before deciding which system to install, rst determine which
loads you can safely run on your PTO generator and the cost
of buying a large manual transfer switch versus the cost of a
smaller switch and the additional distribution panel.
To assemble and wire the load disconnect plug, proceed as follows:
1. Strip outer jacket 2-3/4”.
2. Cut and strip leads to lengths specied for the
particular plug.
3. Disassemble cable clamp and top cover.
4. Remove one blade at a time, insert the stripped end
of the appropriate colored wire designated above,
and tighten the set screw.
5. Fit blades through slots in bottom cover and push
down until home. Please note: Make sure blades
are in correct slots and oriented in accordance with
the diagram above or you will not be able to close
the top cover fully.
6. Place top plastic cover over assembly and partially
tighten the bakelite assembly screw. Realign
blades straight (so they t into the top bakelite
housing properly) and tighten the assembly screw.
7. Assemble cable clamp over the outer jacket of the
wire and tighten the two clamp screws. Special Note:
For small size round (less than 3/4”) and at cables, the
wire clamp may be inverted.
WARNING - Personal Injury:
Failure to wire as instructed may cause personal injury or
damage to device or equipment. To be installed or checked
by an electrician or qualied person only.
PRE-START CHECKS
The nal item that you are going to have to assemble/wire is the
plug that will be used to connect the generator to the manual
transfer switch. You should have found this load plug in a small
box when you unpacked the PTO generator. If you need additional plugs for multiple sites you can order additional plugs from
your Winco dealer, the part number is “300137”.
WARNING: Personal Injury
DISCONNECT POWER BEFORE WIRING
IMPORTANT: Use copper wire only. Do not use tinned con-
ductors. Sizing cable - see NEC 400-5.
CORD SIZE: #4/4 conductor cord SO, 1.25 inch dia. max.
WARNING: Personal Injury
When working on or around these generators, do not wear
loose tting clothing or any articles that may get caught in
moving parts.
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 4.)
Case should be lled 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 Main-
tenance for oil specications.
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3. Make sure the drive shaft (tumbling bar) is assembled
to warm it up before proceeding, so that it will run smoothly
and achieve full power under generator load.
3. With engine idling, engage the power take-off drive.
4. Watch the voltmeter on the generator and slowly increase
engine speed until the output reaches approximately 240 to
245 volts, in green portion of voltmeter scale.
5. Plug 4 wire load cord set into receptacle. Place transfer
switch in the emergency position.
6. Place the load circuit breaker in the “on” position. If the
breaker trips, move manual transfer switch to “off” or
normal position. Check for short circuit or grounded
connection in the load cable to the double throw switch and
repair. A breaker that trips from overload or short circuit
must be reset by moving to “off” before reclosing.
7. With engine and generator running smoothly, switch on the
electrical load while watching the voltmeter. Readjust en-
gine throttle to keep generator output under load at 240V
(in green portion of voltmeter scale). If engine is equipped
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 icker. Drive shafts shipped
new from Winco are always synchronized and tethered
so they can not be taken apart.
DANGER: Personal Injury
POWER TAKE-OFF MUST BE DISENGAGED AT THIS TIME.
4. Couple the tractor to the generator with the drive shaft
(tumbling bar). Couple the tumbling bar to the genera-
tor input shaft rst, 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 5° misalignment
between the shafts. Misalignment will cause generator
output voltage to icker.
WARNING - Personal Injury
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
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. Set the manual transfer to mid or normal (up)
position.
2. 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.
3. With engine idling, engage the power take-off drive.
4. Watch the voltmeter on the generator and slowly
increase engine speed until the output reaches approximately 240 to 245 volts, in green portion of voltmeter
scale.
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.
5. Plug 4 wire load cord set into receptacle. Place
transfer switch in the emergency position.
6. Place the load circuit breaker in the “on” position. If
the breaker trips, move manual transfer switch to “off”
or normal position. Check for short circuit or grounded
connection in the load cable to the double throw switch
and repair. A breaker that trips from overload or short
circuit must be reset by moving to “off” before reclosing.
7. With engine and generator running smoothly, switch on
the electrical load while watching the voltmeter. Readjust engine throttle to keep generator output under load
at 240V (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.
NOTE: Equipment Damage
If the load includes motors turn them on one at a time, highest starting current motor rst, next highest second, etc
8. The return of normal power will be indicated by the
lamp on the front of transfer switch; (applicable only
when the transfer switch is equipped with indicating
lamps or your electrician has installed them). After sufcient time to assure that power restoration isn’t temporary, return the transfer switch to normal power (10 - 20
minutes).
9. Place the alternator circuit breaker in “off” position. Do
not remove plug before opening the breaker.
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10. Slowly reduce power take-off speed to a minimum and
CLEANING
1. Inspect for loose or broken wiring connections. Make sure
that wiring connections are not loose at the generator end,
circuit breakers, and receptacles.
2. Do not allow dirt or chaff to collect in the interior of the
generator or the ventilation openings. Inspect for indica-
tion of the entrance of mice or insects into the generator.
The inlet and outlet openings are louvered, but possible
damage to the louvers could occur. Mice can destroy the
generator winding.
WARNING: Equipment Damage
the generator. See Figure 4. Maintain the oil level before
each use of the generator. Maintain the oil level at oil level
plug height. The generator is shipped with lubricant in the
gear case. Specifications for gear case lubricant are: API
Service: GL-5 EP Rated, Grade: SAE 85W-90-140,
Amount: 1 pint. The following kinds of oil are recom-
mended 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
and require no further lubrication.
lubricated with a thin film of grease before and after each
use of the generator. See Figure 6 for lubrication sched-
ule.
universal joints in the coupling shaft free from grease and
dirt buildup.
over lubricate
the universal joints.
CLEANING
1. Inspect for loose or broken wiring connections. Make sure
that wiring connections are not loose at the generator end,
circuit breakers, and receptacles.
2. Do not allow dirt or chaff to collect in the interior of the
generator or the ventilation openings. Inspect for indica-
tion of the entrance of mice or insects into the generator.
The inlet and outlet openings are louvered, but possible
damage to the louvers could occur. Mice can destroy the
generator winding.
WARNING: Equipment Damage
DO NOT CLEAN THE GENERATOR WHILE IT IS RUNNING.
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.
disengage the power take-off. Some tractors have a
brake on the power take-off that stops the shaft instantly. Stopping the alternator rotor instantly from rated
speed may result in a broken shaft or other drive line
failures.
WARNING: Personal Injury
Never try to manually stop the generator. Always let it coast
until it stops
.
11. Shut off the engine.
12. Disconnect drive shaft (tumbling bar)
power take-off end rst, then generator end.
13. Exercise PTO alternator for one hour under load at least
twice a year.
STORAGE & MAINTENANCE
If the generator is mounted on an off-highway trailer, such as the Winco trailer, it
should be stored in a garage, barn or machine shed in a dry and clean location. The
generator should be covered with a tarpaulin
to prevent the entrance of dust, chaff, and/or
moisture.
The generator may be stored on end,
provided the generator is on a clean, dry elevated surface such as a board. Do not have
it resting on a dirt surface. (Figure 3)
MAINTENANCE REQUIREMENTS
LUBRICATION
A. Check the generator gear case oil level before each use
of the generator. See Figure 4. Maintain the oil level before
each use of the generator. Maintain the oil level at oil level plug
height. The generator is shipped with lubricant in the gear case.
Specications for gear case lubricant are: API Service: GL-5 EP
Rated, Grade: SAE 85W-90-140, 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
CAUTION: Equipment Damage
Do not overll generator gear case. Overlling causes overheating and oil seal failure.
C. The splined generator input shaft should be cleaned and
lubricated with a thin lm of grease before and after each use of
the generator. See Figure 6 for lubrication schedule.
D. The drive shaft (tumbling bar) requires greasing. Keep the
universal joints in the coupling shaft free from grease and dirt
buildup.
NOTE: Do not over lubricate
the universal joints.
CLEANING
A. Inspect for loose or broken wiring connections. Make sure
that wiring connections are not loose at the generator end, circuit
breakers, and receptacles.
B. Do not allow dirt or chaff to collect in the interior of the
generator or the ventilation openings. Inspect for indication of
the entrance of mice or insects into the generator. The inlet and
outlet openings are louvered, but possible damage to the louvers
could occur. Mice can destroy the generator winding.
WARNING: Equipment Damage
DO NOT CLEAN THE GENERATOR WHILE IT IS RUNNING.
B. The generator bearings are factory lubricated and sealed,
and require no further lubrication.
93225-00
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Page 10
Increase size of line wiring. Might also be the result of loose
connection indicated by excessive heating at the loose
connection terminal.
Check for overload on the tractor or undersized.
Check tractor governor. Tight or defective throttle levers
and joints.
Worn or defective tractor engine
(see engine manufacturers
check list.)
REMEDY
Back flash the 120 volt circuit with 12 volts DC
Replace grounded rotor assembly.
Repair or replace stator assembly.
Replace defective diode(s).
Clean and tighten generator and receptacle connections.
Clean screens, make sure interior of generator is unobstructed.
Readjust or Replace as required
Test and replace if defective.
Resync drive line halves.
Realign within 10 degrees.
Replace stator. (Include generator model and serial number
on the order.)
Same as above.
Same as above.
Repair or replace as required
Test and replace if defective.
Low Speed
High line loss. Indicated by lower voltage at load than at
generator terminals.
1. Undersized/overloaded.
2. Defective governor.
3. Low power - worn engine.
LOW OUTPUT VOLTAGE
POSSIBLE CAUSE
Loss of residual magnetism. Usually occurs only after
disassembly of field frame or severe mechanical stress/abuse.
Grounded or shorted rotor winding.
Open excitor circuit in stator
Defective diode(s) on rotor.
Broken or corroded connection.
NO OUTPUT VOLTAGE
Clogged ventilating inlet and/or outlet.
EXCESSIVE HEATING
Generator is spinning too fast, slow tractor down.
HIGH OUTPUT VOLTAGE
Shorted or grounded rotor coil.
VOLTAGE UNSTEADY/ LIGHTS FLICKERING
Drive line knuckles out of sync. (See Figure 5.)
PTO drive line alignment.
Shorted stator winding. This can be identified by the use of an
internal “growler” at a competent rewinding shop.
Grounded stator. Check winding by test lamp or high potential
tester from stator leads to lamination.
Open stator circuit. Measure circuit between leads with an
ohmmeter. Should have a circuit between any pair of leads.
Defective stator
Defective Capacitors
10
3225-0060706-241
Page 11
ILLUSTRATED
PARTS LIST
COMPLETE ASSEMBLY
113225-00
60706-241
Page 12
REF # PART NUMBER QTY DESCRIPTION
H H
N
GND
G1
G3
H
N
1
2
3
4
GND
Generator
Voltmeter
40A
240V
Breaker
20A
Breaker
20
Amp
Rcpt
60
Amp
Rcpt
Ground
Lug
G3 G3
G1 G1
Nuetral
to
Ground
Bond
1 16406-007 1 Formed Base
2 99839-002 1 Generator with Gear Case
Mecc Alte Model:
S20W-1302 M5
3 15209-003 1 Decal Electrical Shock
4 Z2553 1 Decal Operators Instructions
5 300137 1 NEMA 14-60P Plug
6 21698-001 9 Torx Screw
7 300080-3 1 Top Cover
8 Z2568 1 Decal Danger PTO
9 300086-2 1 Drive Shaft Guard
10 98479-000 1 Decal Winco #1
11 53113-002 2 Decal Winco
12 63966-009 1 Nameplete
13 99841-003 1 Gear Case Support
14 16335-015 1 Generator Support
NI Z9941 1 Decal Oil Fill Hole
NI 91369-003 1 Decal 515 RPM
NI Not Illustrated
WIRING DIAGRAM
12
3225-0060706-241
Page 13
GENERATOR END ASSEMBLY
REF # PART NUMBER QTY DESCRIPTION
99839-002 1 Complete Generator End
with Gear Case
19 54665-000 1 6205-2RS Bearing
26 300323-208 2 Varistor
27 300323-207 2 Diode
65 99839-112 1 45 mf Capacitor
GENERATOR SPECIFICATIONS:
STATOR: 0.145 Ohms
ROTOR: 5.67 Ohms
CAPACITOR LEADS 1.31 Ohms
133225-00
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Page 14
RECEPTACLE PANEL
ON OFF
H H
N
GND
G1
G3
H
N
2
3
4
5
6
7
8
1
ASSEMBLY
REF # PART NUMBER QTY DESCRIPTION
1 300080-3 1 Top Cover
2 91286-001 1 20 Amp 1-Pole Circuit Breaker
3 63708-000 1 Ground Lug
4 57030-007 1 45 Amp 240 VAC Circuit Breaker
5 91370-000 1 Voltmeter
6 300079-5 1 Control Box
7 50766-000 1 NEMA 5-20R Receptacle
8 300136 1 NEMA 14-60R Receptacle
14
3225-0060706-241
Page 15
TWO WHEEL TRANSPORT
DESCRIPTION PART NO.
1 SUPPORT, TONGUE (QTY. 2) 300081
2 HITCH, TONGUE (QTY. 2) 300082
3 TONGUE 300083
4 AXLE (QTY. 2) 300085
5 SUPPORT, AXLE 300164
6 SUPPORT, PTO SHAFT 300161-1
7 SUPPORT, PTO SHAFT 300161-2
8 TIRE/RIM, PNEUMATIC (QTY. 2) 43657-000
153225-00
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Page 16
PTO GENERATOR
12 MONTH LIMITED WARRANTY
WINCO, Inc., warrants for twelve 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 factoryauthorized service station, to be defective in material or workmanship under normal standby use.
For warranty service, return the product within 12 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 12 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.
16
WINCO INC.
225 S. CORDOVA AVE.
LE CENTER, MN 56057
SERVICE DEPT.
(507) 357-6831
wincogen.com
3225-0060706-241
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