Barreto 1324TK User manual

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THE
MODEL 1324TK - 1624TK
HYDRAULIC TRACK TRENCHER OWNER’S MANUAL
CONGRATULATIONS!
You are now the proud owner of the BARRETO trencher. The OPERATOR’S MANUAL is attached
to the machine. Please study it and this manual to become familiar with the trencher, its
characteristics, and method of operation. Pay particular attention to the safety and operating
instructions to prevent personal injury or equipment damage.
If you have any questions or need any replacement parts in the future, please contact us at your
convenience. Our toll-free phone number, fax and email are listed below.
THANK YOU for your patronage and confidence in BARRETO equipment.
Barreto Manufacturing, Inc.
Innovative Equipment Engineered to Last
66498 Hwy 203, La Grande, OR 97850
[phone] [phone]
FAX [phone]
E-Mail: [email protected]
Web Site: http://www.barretomfg.com
Machine Identification Record
BARRETO Customer number
Machine model number
Machine serial number
Engine manufacturer
Engine model number
Engine serial number

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TABLE OF CONTENTS
TRENCHER ASSEMBLY INSTRUCTIONS 3
SERVICE INFORMATION 3
HOUR METER 4
TRENCHER INTENDED USE 5
LUBRICATION REQUIREMENTS 5
CHAIN INSTALLATION 6
OPERATOR TRAINING 6
WARRANTY OF BARRETO MANUFACTURING EQUIPMENT 7
MAINTENANCE PREPARATION 7
ROUTINE MAINTENANCE 8
TRACK TENSION ADJUSTMENT 9
TRACK DRIVE CABLE ADJUSTMENT 10
TRACK DRIVE NEUTRAL ADJUSTMENT 11
CHAIN VALVE ADJUSTMENT 12
T-HANDLE CONTROL TENSION ADJUSTMENT 13
ELECTRICAL SCHEMATIC – HONDA GX390 14
ELECTRICAL SCHEMATIC – SUBARU EX40 15
ELECTRICAL SCHEMATIC – BRIGGS VANGUARD 16HP 16
HYDRAULIC SCHEMATIC – 1324TK 17
HYDRAULIC SCHEMATIC – 1624TK 18
TRACK TRENCHER TROUBLESHOOTING GUIDE 19
SPECIFICATIONS 21
INDEX 22

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TRENCHER ASSEMBLY INSTRUCTIONS
Upon delivery, check for freight damage and any missing items. If any damage is found, notify the
carrier and Barreto Manufacturing immediately. Remove trencher from shipping crate.
When documentation refers to “right side” or “left side”, it is relative to the operator’s position with
both hands on the handlebars.
Install cushion pad, boom cushion, and boom. CAUTION!! The boom is heavy. You may want help
to lift it into place. See the exploded view drawing 00368 R1. Push boom on as far as it will go onto
the boom mount (part of the chain motor housing weldment). Be sure adjuster screw is backed out.
SERVICE INFORMATION
HYDRAULIC SYSTEM:
•Your trencher should arrive with approximately 14 U.S. gallons (53 liters) of tractor transmission
/ hydraulic fluid in the tank. Shipping regulations may prohibit shipping with the hydraulic fluid.
Check the reservoir level using the sight gauge on the side of the tank. If required, add tractor
transmission / hydraulic fluid to the reservoir. For machine use in ambient temperatures between
+32°F (0°C) and +90°F (32°C) hydraulic fluid ISO 68 is recommended. If the machine is
operated at temperatures below +32°F (0°C) then hydraulic fluid ISO 46 is recommended.
•Recheck oil level after trencher has been run and oil has circulated through the components.
Routinely check level thereafter.
•Change hydraulic fluid filter after the first 50 hours of use. Change it every 200 hours thereafter.
•Add approximately one quart (1 liter) of hydraulic fluid to reservoir with each filter change.
•Discard the old filter according to environmental standards in your geographic area.
•Check all hydraulic fittings for leaks and tighten if necessary.
WARNING - Running the trencher without hydraulic fluid will cause serious damage to the
hydraulic pump. INSURE THAT THE RESERVOIR FLUID LEVEL IS TO THE SIGHT GAUGE
BEFORE STARTING THE MACHINE.
IMPORTANT: If the couplers between the engine and the pump are
moved or removed for any reason, it is CRITICAL that they have a
1/16” gap between them when reinstalled. Failure to have this gap will
result in rapid wear and failure of your pump!
NOTE: It is very important to move the fuel shutoff lever to the closed position after stopping
the engine. Failure to do so could cause fuel to leak down into the cylinder and crankcase.
Damage resulting from this will void your engine warranty and not be covered.
IMPORTANT - The engine on the Barreto trencher may or may not have been serviced prior to
shipping. Shipping regulations may prohibit shipping with fuel or oil in the engine. Check levels and
add oil and fuel as required before starting engine. Service the engine according to the engine
owner’s manual before starting.

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HOUR METER
The DGI® TACH/HOUR hour meter tracks the hours of machine operation in order for routine
maintenance to be performed on a timely basis.
Your DGI® hour meter is pre-set at the DGI® factory to go into Flash Alert mode at 25-hour
intervals. Although the engine manufacturer does not require changing engine oil this often, due to
heavy-duty use and extreme conditions inherent to tiller use, Barreto Manufacturing strongly
recommends frequent oil changes.
Refer to this manual for equipment service requirements and to the Engine Manual for other engine
service requirements.
While Flash Alert is active, hold the tip of the RESET TOOL (Key Kancel Wand) against the meter
as shown. Within several seconds, the display will stop flashing indicating the Service Interval has
been reset. If the wand gets lost, a small mechanic’s pick-up magnet will work.
RESET TOOL

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TRENCHER INTENDED USE
This machine is designed for digging trenches in “normal” ground of reasonably soft dirt and stones
up to 6” (15cm) in diameter. Ground with larger stones, high clay content, very hard packed, very
dry, or in a frozen condition may be unsuitable for normal trenching. Consider using a backhoe or
other heavier equipment for such conditions.
LUBRICATION REQUIREMENTS
Grease at the intervals indicated per the illustration of grease lubrication points. There is also a grease
diagram decal on the machine.

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CHAIN INSTALLATION
CAUTION!! The chain is quite heavy. You may want help to lift it.
1. Slide chain under sprocket, with teeth in the correct cutting direction. Properly installed, the
cutting edges of the chain will face forward on the top of the boom and rearward on the
bottom of the boom (see diagram below).
2. Start engine and push digging boom control lever forward to lower boom onto the chain. Stop
engine.
3. Wrap chain around boom and sprocket. Install chain master link or link pin and cotter.
4. Use boom adjuster screw to tighten chain. Chain should have enough slack to allow
approximately 2" (5cm) of space between middle of boom and chain when boom and chain
are straight out in a horizontal position. Tighten adjuster screw locknut.
Forward Cutting edge
Cutting edge Rearward
OPERATOR TRAINING
Rental companies should demonstrate all of the machine operations to each rental customer
including:
•Starting up the engine.
•Loading the trencher onto the trailer and securing it for road transport.
•Unloading the trencher from the trailer.
•Trenching procedure - Operation of the trencher.

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WARRANTY OF BARRETO MANUFACTURING EQUIPMENT
Barreto Manufacturing, Inc. warrants all BARRETO equipment to be free of defects in material and
workmanship for a period of one (1) year, dating from delivery to the original user.
This Warranty is in lieu of all other warranties, whether written or implied, and is limited to:
Replacement of parts returned to the dealer and/or factory and determined defective upon inspection.
(Replacement for parts to dealers shall be at dealer cost plus shipping charges.)
Time for pick-up and/or delivery, transportation or service calls by dealers is excluded. Manufacturer
reserves the right to determine reasonable time required for repair. Warranty does not apply to
damage caused by abuse or neglect. Time and materials required for normal maintenance and service
are also excluded from warranty coverage.
Engines, engine accessories, batteries and tires are warranted by the original manufacturers
and are not covered by the Barreto Equipment Warranty. Wear parts such as tiller tines,
sprockets, bearings, trencher chain parts including teeth, stump grinder cutting teeth & holders, etc.
are also excluded unless it can be determined that a defect has contributed to premature wear.
MAINTENANCE PREPARATION
Only trained & qualified personnel should perform maintenance or repairs of the trencher. Before
performing any service, maintenance, adjustments, repairs, or off-season long-term storage, follow
the SHUT DOWN PROCEDURE in the OPERATOR’S MANUAL.
Do not touch the engine, muffler, or any of the hydraulic components until cool.
WARNING: Muffler and engine get hot enough to cause serious burns.
For the safety of yourself and others, allow enough time for the engine,
muffler, and the hydraulic fluid to cool completely before performing any
cleaning or maintenance.
Avoid contact with hydraulic fluid.
WARNING: When machine is operating, hydraulic fluid is under extreme pressure and can
get under skin and burn or poison.
If you need to lower the dig chain boom without power, do the following:
1. Position a pan under the trencher to catch hydraulic fluid.
2. Support the boom front end with a hoist or forklift.
WARNING: The boom with dig chain is heavy. Manpower alone is not recommended, but if
necessary, use a team of two strong workers to support the boom, and a third worker to loosen
the hose.
3. Loosen the hose at the rod end (front) port of the boom cylinder and lower the boom.
4. If it still will not lower, then loosen the hose at the back end port of the boom cylinder.

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ROUTINE MAINTENANCE
Routinely check the condition, clean, tighten, repair, or replace as necessary the following:
•Dig chain boom guard
•Muffler guard
•Hydraulic hoses and fittings
•Fuel lines
•Fasteners
•Safety decals
Clean safety decals often using soap and water. Do not use abrasive cleaners or solvents such as
mineral spirits that may damage the decals. Replace any damaged (unreadable) or missing decals. If
you replace a machine part that has one or more decals affixed to it, replace the decals also.
Replacement parts and decals can be purchased from Barreto Manufacturing, Inc. When attaching
decals, the temperature of the mounting surface must be at least 40°F (5°C) and must be clean and
dry.
Service the engine according to the engine owner’s manual. Follow the directions for all aspects of
service including air filter change, oil level checking, filling, draining, disposal of engine oil, disposal
of petrol/gasoline, and off-season long-term storage.
Off-season long-term storage of the trencher can be at any ambient temperature.

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TRACK TENSION ADJUSTMENT
Track must be tensioned enough to prevent de-tracking. Too much tension will cause increased wear
on roller, sprockets and drive motor bearings. There are two methods of measuring correct tension:
Measure the compression of the springs, or measure track sag.
To measure spring compression:
Loosen tension adjuster nut and lock nut completely. Measure free length of springs. Then tighten
adjuster nut to compress tension spring pair to a length of 5/8” (16mm) less than free length. Tighten
lock nut.
To measure track sag:
Lift the machine and raise the track off the ground. Measure the distance between either one of the
central rollers and track metal core bars and adjust track tension to get 1/2” (13mm) track sag.
To remove/replace track:
1. Completely loosen tensioner nuts.
2. Retract idler completely.
3. Remove track from idler first, sprocket second and front roller last.
4. Reverse procedure to replace track.
Adjust track tension per instructions and illustration.

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TRACK DRIVE VALVE CABLE ADJUSTMENT
The drive valve cable and lever may wear. The cable stroke should be checked monthly and
adjustment made as needed. An insufficient cable / valve stroke will cause the track drive to become
weak.
1. Remove cover from back side of control panel.
2. Pull the clutch lever all the way up until it touches the handle bar grip. Measure the valve cable
stroke – it should be 9/16” (14mm).
3. Adjust the cable housing nuts to get 9/16” (14mm) cable stroke. Do not include any cable free
play in the measurements. The cable relief spring should compress 1/16” to 1/8” (1.6mm to
3.2mm) as the valve and cable reach the end of the stroke. The lower end of the cable may be
adjusted if there is not enough adjustment at the upper end (shown).
4. Tighten cable nuts and replace back cover.
5. To see a video on how to do this adjustment, enter the following address into your browser URL
window: https://www.youtube.com/watch?v=34B8phRm8m0

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TRACK DRIVE NEUTRAL ADJUSTMENT
The speed control cables may need to be adjusted after some use. If the machine creeps while the T-
handle control is in neutral, or if the left and right tracks move at different speeds, the speed cables
will need adjustment.
Adjust the cables to bring the pump cable arms to the neutral position (vertical) when the T-handle
control is in neutral.
Adjust the cables to eliminate slack, but do not over tighten them so they are extremely tight against
each other. The front pump drives the right track, and rear pump drives left track.
The control cables should be adjusted so both tracks are in neutral or move at same speed. Check by
starting engine and activating clutch lever with T-handle control in neutral. Adjust cables so both
tracks are stationary or creep at same speed.

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CHAIN VALVE ADJUSTMENT
The chain valve control should be adjusted to completely activate the chain valve when the dig chain
control is in ‘ON’ position. To check this adjustment:
1. Put the chain on/off control in ON position (with engine stopped).
2. Pull the clutch lever on left handlebar up until it touches the handgrip.
3. While holding clutch lever up, push on the chain forward/neutral/reverse lever. It should be at the
end of its stroke, thus not move down any more.
If the chain F/N/R lever can be pushed down more, the valve spool lever should be adjusted.
To make this adjustment:
1. Remove back cover from the control panel.
2. Loosen the 2 bolts on valve lever and rotate the lever plate down about 1/16” (1.6mm).
3. Re-tighten the bolts and check the lever stroke.
Adjust so the valve lever comes to the end of its stroke just as the clutch lever touches the handgrip
when chain valve control is in ON position.

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T-HANDLE CONTROL TENSION ADJUSTMENT
To adjust the T-handle control tension, follow these simple instructions.
First take off the back cover.
Look under the T-handle control and you will see a socket head bolt threaded into each cable clamp
(see picture). These are the tension clamps.
The socket head bolt is adjusted with a 3/16” hex key.
If you tighten the socket head bolt (turn clockwise), the tension will increase.
If you loosen the socket head bolt (counter-clockwise), the tension will decrease.
LEFT HAND ADJUSTMENT RIGHT HAND

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ELECTRICAL SCHEMATIC - HONDA GX390

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ELECTRICAL SCHEMATIC – SUBARU EX40

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ELECTRICAL SCHEMATIC – BRIGGS VANGUARD 16HP

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HYDRAULIC SCHEMATIC 1324TK

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HYDRAULIC SCHEMATIC 1624TK

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TRACK TRENCHER TROUBLESHOOTING GUIDE
CAUTION!! Always use extreme care when troubleshooting or making adjustments on trencher.
Stay clear of chain and auger when engine is running. Stop engine before disassembling any
component.
A. Entire hydraulic system does not operate and the engine is not under load.
1. Low hydraulic fluid in tank.
2. Hydraulic pump-to-engine coupler has
slipped.
3. Main pump suction leaking air into pump
intake.
Add hydraulic fluid until it shows in sight
gauge.
Check for wear and replace both coupler
halves and rubber spider, as needed.
Check main suction hoses and fittings for
leaks and tighten fitting nuts.
B. Engine lugs down or dies and tracks and chain do not turn.
1. Rocks or other obstructions stopping chain.
2. Trenching depth or speed too great for soil
conditions.
3. Engine improperly tuned or maintained.
4. Low oil alert causes engine to shut down.
5. Engine losing power due to wear.
Reverse chain momentarily to free it from
obstruction. Raise boom and stop chain. See if
obstruction can be removed from trench.
Decrease ground speed or trenching depth.
See engine manual and correct as needed.
This may occur when trenching on hills.
Level trencher, check oil and allow oil alert to
reset.
See engine manual.
C. Chain fails to rotate, but track drive works.
1. Chain motor worn.
2. Chain Control Relief Valve
malfunctioning.
3. Chain drive pump worn.
4. Chain valve lever maladjusted.
Rebuild or replace motor. New motors are
available from Barreto Manufacturing.
Adjust Relief Valve to 3500 PSI or replace
relief spring if needed.
Replace pump.
Adjust as shown in illustration elsewhere in
this manual.

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TRACK TRENCHER TROUBLESHOOTING GUIDE (continued)
D. Tracks fail to turn, but chain rotates
1. Sprocket key sheared
2. Track Drive Valve not fully activated.
3. Speed cable broken or disconnected.
4. Pump cable lever loose on shaft.
Replace key and other parts as needed.
Adjust valve cable as shown elsewhere
in this manual.
Replace or re-connect cable.
Tighten setscrew on pump lever.
E. Hydraulic fluid leaks in hydraulic system
1. Fittings are loose.
2. Worn or broken hoses.
3. Hydraulic fluid around chain motor or
shaft.
Tighten fittings on hoses and adapters.
Replace damaged hoses.
Inspect motor for leaking shaft seal.
Rebuild or replace motor.
F. Foaming hydraulic fluid coming from breather hose.
1. Improper fluid used.
2. Air leaking into fluid.
Verify that hydraulic fluid used had
antifoaming additives. Tractor
transmission / hydraulic fluid ISO 68 is
recommended for use in temperatures
above +32°F.
Inspect and tighten fittings and clamps
on pump intake hoses.
G. Boom does not lift, or does not lower into ground.
1. Boom lift relief valve malfunctioning.
2. Boom cylinder piston seal damaged or rod
bent.
3. Boom pivot bushing seized.
Adjust relief to 1000 PSI. This may
require a replacement spring in valve.
Disassemble & replace parts as
required.
Disassemble, inspect, clean & replace
parts as required.