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20RTK – 23RTK OWNER’S MANUAL                  12/8/21                                  Page 9 of 18 

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. 

Содержание 20RTK

Страница 1: ...s 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 800 525 7348 541 963 7348 FAX 541 963 6755 E Mail info barretomfg com Web Site http www barret...

Страница 2: ...UIREMENTS 5 CHAIN INSTALLATION 6 OPERATOR TRAINING 6 WARRANTY OF BARRETO MANUFACTURING EQUIPMENT 7 MAINTENANCE PREPARATION 7 ROUTINE MAINTENANCE 8 TRACK TENSION ADJUSTMENT 9 BATTERY MAINTENANCE 10 ELECTRICAL SCHEMATIC HONDA GX630 GX690 12 ELECTRICAL SCHEMATIC BRIGGS VANGUARD 23 HP 13 HYDRAULIC SCHEMATIC 14 TRACK TRENCHER TROUBLESHOOTING GUIDE 15 SPECIFICATIONS 17 INDEX 18 ...

Страница 3: ... 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 a...

Страница 4: ... for routine maintenance to be performed on a timely basis It can also show your engine RPM s by using the wand magnet to toggle the display If the wand gets lost a small mechanic s pick up magnet will work Refer to this manual for equipment service requirements and to the Engine Manual for other engine service requirements RESET TOOL ...

Страница 5: ...m 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 ...

Страница 6: ...hain 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 shoul...

Страница 7: ...TENANCE 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 ...

Страница 8: ...ssing 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 s...

Страница 9: ...easure 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...

Страница 10: ...ness and severe burns if leaked from the battery Do not charge or jump start the battery near flames or sparks or while smoking WARNING Battery fumes are flammable and explosive Avoid explosion hazard that could blind and burn Tools and jumper cable clamps can make sparks so use them with care Shield eyes and face and wear rubber gloves ELECTROLYTE LEVEL Check the battery electrolyte level every 2...

Страница 11: ...eaner tool A solution of four parts water and one part baking soda is helpful 5 Apply a light coating of grease to the battery terminals to prevent corrosion 6 Check the battery electrolyte level see procedure above 7 Insure that the battery caps tightly in place Do not charge the battery near flames or sparks or while smoking WARNING Battery fumes are flammable and explosive Avoid explosion hazar...

Страница 12: ...20RTK 23RTK OWNER S MANUAL 12 8 21 Page 12 of 18 ELECTRICAL SCHEMATIC HONDA GX630 GX690 ...

Страница 13: ... G B 493625 Ignition Switch Terminal A Red Wire to Regulator Terminal B Orange Wire to Battery Terminal M Black Wire to Engine Ground Terminal S Yellow Wire to Starter Solenoid Optional Terminal L White Wire to Fuel Solenoid or Accesories Terminal G Brown Wire Ground on Remote Installation of Battery Electric Clutch or Oil Pressure Switch S A L M G B Typical Regulated Wiring Diagram Afterfire Sole...

Страница 14: ...20RTK 23RTK OWNER S MANUAL 12 8 21 Page 14 of 18 HYDRAULIC SCHEMATIC ...

Страница 15: ...ne 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 D...

Страница 16: ...eplace motor New motors are available from Barreto Manufacturing 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 o...

Страница 17: ...s 53 liters Oil Cooler Standard Standard TRACK SYSTEM Track Width 7 1 180 mm 7 1 180 mm Total Ground Contact 482 8 312 sq m 482 8 312 sq m OPERATIONS Ground Drive Forward 210 feet per minute 64 8 m m 210 feet per minute 64 8 m m Ground Drive Reverse 90 feet per minute 27 4 m m 90 feet per minute 27 4 m m BOOM CHAIN OPTIONS Depths 24 30 36 or 42 24 30 36 42 or 48 61 76 91 or 107cm 61 76 91 107 or 1...

Страница 18: ...RICAL SCHEMATIC BRIGGS VANGUARD 13 ELECTRICAL SCHEMATIC HONDA GX630 GX690 12 GREASE 5 HOUR METER 4 HYDRAULIC FLUID 3 7 15 16 HYDRAULIC OIL FILTER 3 HYDRAULIC SCHEMATIC 14 LUBRICATION 5 MAINTENANCE 7 8 OPERATOR TRAINING 6 SERVICE 3 SPECIFICATIONS 17 TRACK TENSION ADJUSTMENT 9 TRAILER 6 TRANSPORT 6 TRENCHER INTENDED USE 5 TROUBLE SHOOTING 15 16 WARRANTY 7 ...

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