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Summary of Contents for Stark U-plow UA 4200/2400
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Page 1: Introduction
Original Instructions User and Maintenance Manual U-Plows (for machines over 10 t) -
Page 2: Read Before Use
Introduction Congratulations for choosing STARK U-plow! We at the STARK want your plow to serve you the best possible way, efficiently and for a long time. Therefore, please read this manual before taking your new plow in use. STARK products are designed and manufactured in Finland and each attachment is equipped to meet the customer’s needs. -
Page 3: Table Of Contents
Contents Introduction ............................1 Read before use ........................... 2 1. DECLARATION OF CONFORMITY ...................... 4 2. INTENDED USE ..........................5 3. SAFETY INSTRUCTIONS ........................5 4. IDENTIFICATION AND PARTS ......................6 4.1. Identification plate ..........................6 4.2. Maintenance and parts service ......................6 5. -
Page 4: Declaration Of Conformity
Original manufacturer Declaration of conformity: Product name: U-plow Models: STARK UA 4200/2400, UA 4800/2400, UA 4200/2400H, UA 4800/2400H, UA 4800/3000H, UA 5400/3000H, UA 6000/3000H, UA 6600/3000H, UAR 4200/2400, UAR 4800/2400, UAR 4200/2400H, UAR 4800/2400H, UAR 4800/3000H, UAR 5400/3000H, UAR 6000/3000H, UAR 6600/3000H... -
Page 5: Intended Use
2. INTENDED USE STARK U-plows are designed for plowing and moving snow from yards and streets. U-plow’s wings of turn 180° and it has wide turning angle ensuring its usability in different kinds of areas. Using to plow or move heavier material than snow is prohibited and will terminate warranty. -
Page 6: Identification And Parts
When inquiring and ordering parts please give the product type and serial number from the identification plate to facilitate service. STARK maintenance and parts service as well as your dealer can answer your questions on maintenance and parts. Please contact your dealer or STARK maintenance service: tel. -
Page 7: Main Parts Of The Plow
5. MAIN PARTS OF THE PLOW Picture 2 Main parts of the plow 1) Middle wing 2) Left wing 3) Right wing 4) Turning frame 5) Blade frame 6) Turning cylinder 7) Inner turning cylinder of the wing 8) Outer turning cylinder of the wing 9) Blade frame spring / Blade frame RELAX-spring (UAR-models) 10) Fitting/flotation frame 11) Support leg... -
Page 8: Attaching The Plow
6.1. Attaching the plow to the base machine The plow is attached to the base machine by welded or bolted STARK FIT quick hitches. The machine is connected to a hydraulic system. Hydraulic circuit diagrams can be found in a later section in this manual. Ask your retailer for available STARK FIT quick hitches. -
Page 9: Operating The Plow
7. OPERATING THE PLOW Before using the plow make sure: the plow is installed correctly all locking pins are in place hydraulic hoses are connected properly hoses are intact there are no oil leaks all functions are working properly learn how to operate the plow in a closed area 7.1. -
Page 10: Permitted Driving Directions For The Plow In Different Positions
7.2. Permitted driving directions for the plow in different positions Pay attention to the functioning of the relief valve when turning the wings. If plow is driven with the wings in extreme position, the cylinder piston is at the end of the chamber and the relief valve cannot function. When operating the plow, leave approx. - Page 11 Picture 6 Gathering snow Picture 7 Packing snow Page 11 / 30...
- Page 12 Picture 8 Gathering snow while reversing NOTE! If the wings are straight back (picture 8) while driving forward the blades of the side wings and middle wing may collide. Page 12 / 30...
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Page 13: Removing Packed Snow
7.3. Removing packed snow RELAX blade system van be used to remove packed snow. Turn wings straight back ( ) and tilt the plow slightly Picture forward. Push flotation to the bottom, press slightly with the loader and drive slowly forward. NOTE! The blades of the side wings and middle wing may collide, drive carefully! Picture 9 Removing packed snow Page 13 / 30... -
Page 14: Adjusting Relax -Blade System (Uar-Models)
7.4. Adjusting RELAX -blade system (UAR-models) RELAX -release mechanism keeps the the blades locked. The plowing result is even and formation of packed snow decreases. When the blade hits an obstacle the release mechanism opens allowing the blade frame to turn backwards and the blade to go over the obstacle. - Page 15 Adjustment nut Picture 12 RELAX -mechanism’s adjustment nut Picture 13 Minimum α-angle of the joints must be at least 5° Tension nut Locking nut Picture 14 Adjustment of the RELAX -spring Page 15 / 30...
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Page 16: Adjusting Acs (Anti Collision System) -Springs (Ua-Models)
7.5. Adjusting ACS (Anti Collision System) -springs (UA-models) ACS -blade system in UA-model protects the driver, attachment and the base machine from damaging when hitting an obstacle. Wear blades are bolted to blade frames (picture 15). When hitting an obstacle, the blade frame swivels. ACS - blade system increases safety but also reduces bouncing of the plow when hitting an obstacle because single blade frame swivels to pass the obstacle. - Page 17 Rigidity of the spring can be adjusted by the pre-straining nuts under the spring (picture 18). By turning the upper nut anti-clockwise the strain increases and by turning the lower nut it is locked in place. In double spring designs both springs must be adjusted to same pre-strain.
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Page 18: Adjusting Flotation
7.6. Adjusting flotation U-plows have FLOATING FRAME -flotation system. FLOATING FRAME -technology enables the plow to closely follow the ground with vertical and horizontal flotation independent from the base machine. FLOATING FRAME -system is located by the fittings and this location together with the sliding plates reduce bouncing of the plow while working. The sliding plates need no lubrication. -
Page 19: Adjusting Support Legs
7.7. Adjusting support legs Support legs are adjusted by the handle on top ( ). By turning the handle clockwise, the support leg will rise and Picture anti-clockwise it will lower. Normal position can be seen in picture 21 where the support leg is in level with the blade. In the beginning of the plowing season adjust the support legs a little lower than blade to keep the blade from sinking into soft ground. -
Page 20: Adjusting Perforated Blades
7.9. Adjusting perforated blades When adjusting perforated blades, the bolts can be removed by holding the bolt head with locking pliers and loosening the locking nut behind the blade. Also, when tightening, the bolt head will need to be held to enable the nut to be tightened. -
Page 21: Adjusting Flat Blades
7.10. Adjusting flat blades Flat blades can be adjusted three times. Each time there will be about 45 mm wear edge on the blade. First when the blade is new, it is in the position of . When the blade edge wears out it is lowered and attached from the upper Picture 4 holes of the blade ( ). -
Page 22: Uninstalling The Plow
Picture 7 Turned and lowered blade 7.11. Uninstalling the plow Lower the plow to an even ground on its support legs. Turn off the base machine, put on the parking brake and release pressure from the system. Take off the hydraulic hoses and protect the couplings with plugs. Open the mechanical locking and loosen the plow. -
Page 23: Maintenance Of The Plow
8. MAINTENANCE OF THE PLOW 8.1. General cautions concerning use and maintenance of the plow Comply with the applicable laws and regulations and the instructions in this manual. Never go under the plow if it is not supported. Always put on the base machine’s parking brake before any servicing on the plow. Use only tools which are in good condition. -
Page 24: Lubrication Points
8.6. Lubrication points Picture 80 Locations of the grease nipples 1) Wings’ turning pins, on both pins 4 pcs (total 8 pcs) 2) Outer turning cylinders, on both end 1 pc (total 4 pcs) 3) Inner turning cylinders, on both end 1 pc (total 4 pcs) 4) Support legs, 1 pc on the handle and 1 pc at the side (total 4 pcs) 5) Middle wing’s turning pin, 2 pcs on the side 6) Middle wing’s turning cylinders, on both ends 1 pc (total 4 pcs) -
Page 25: Hydraulics
9. HYDRAULICS The attachment has complicated closed hydraulic system which has been tested and adjusted at the factory. It is recommended to do repairs by changing one component at the time and by a professional. Any changes to the hydraulic system are on the responsibility of the customer. -
Page 26: 4- And 5-Hose Hydraulics
9.2. 4- and 5-hose hydraulics Below diagram of the 5-hose hydraulic system. The 4-hose hydraulic system is otherwise the same but the return line (T) is replaced by accumulator (A). Chart 2 4- and 5-hose hydraulics Page 26 / 30... -
Page 27: 6- And 7-Hose Hydraulics
9.3. 6- and 7-hose hydraulics Below diagram of the 7-hose hydraulic system. The 6-hose hydraulic system is otherwise the same but the return line (T) is replaced by accumulator (A). Chart 3 6- and 7-hose hydraulics Page 27 / 30... -
Page 28: Relief Valve
9.4. Relief valve Relief valve is a safety device which is pre-set at the factory. Changes to this setting at customer’s own risk! Valve models vary by the type of the hydraulic system. In the 3/8- and 8/4 -electric valves (pictures 31 and 33), the relief valves of the side wings can be adjusted by removing the cap, loosening the locking nut with 13 mm spanner and adjusting the valve with 5 mm hex key. - Page 29 Left wing Right wing Right turning cylinder Left turning cylinder Picture 32 Relief valves of 6/2 -electric valve and double relief valve Right wing Left wing Right turning cylinder’s adjustment can be Left turning found at the back cylinder (not in the picture) Picture 33 Relief valves of 8/4 -electric valve Page 29 / 30...
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Page 30: Warranty Terms And Conditions
(1) year of delivery. Warranty duration STARK warranty is valid for one (1) year. If necessary, the customer and manufacturer agree separately on the warranty for repair work and for the used spare parts in the repair.
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