Operation Manual SERIES MODEL eHTX44Y5 RIDE-ON TROWEL (YANMAR 3TNV84T-BKSA DIESEL ENGINE) Revision #0 (01/16/13) To find the latest revision of this publication, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
fuel and chemical exposure Warnings Diesel engine exhaust and some of its constituents, and some dust created by power sanding, sawing, grinding, drilling and other construction activities contain chemicals know to cause cancer, birth defects and other reproductive harm.
Silicosis/Respiratory Warnings WARNING WARNING SILICOSIS WARNING RESPIRATORY HAZARDS Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in their composition may give off dust or mists containing crystalline silica. Silica is a basic component of sand, quartz, brick clay, granite and numerous other minerals and rocks. Repeated and/or substantial inhalation of airborne crystalline silica can cause serious or fatal respiratory diseases, including silicosis.
Table of Contents EHTX Ride-On Trowel Fuel And Chemical Exposure Warnings................... 2 Silicosis/Respiratory Warnings................................. 3 Table Of Contents..................................................... 4 Training Checklist..................................................... 6 Daily Pre-Operation Checklist.................................. 7 Safety Information............................................... 8-13 Dimensions/Specifications......................................
notes ehtx44y5 RIDE-ON TROWEL • operation manual — rev.
training checklist TRAINING CHECKLIST This checklist will list some of the minimum requirements for machine maintenance and operation. Please feel free to detach it and make copies. Use this checklist whenever a new operator is to be trained or it can be used as a review for more experienced operators. Training Checklist No.
daily pre-operation checklist Daily pre-Operation Checklist 1 Engine oil level 2 Hydraulic oil level 3 Radiator coolant level 4 Condition of blades 5 Blade pitch operation 6 Safety stop switch operation 7 Steering control operation ehtx44y5 RIDE-ON TROWEL • operation manual — rev.
Safety Information Do not operate or service the equipment before reading the entire manual. Safety precautions should be followed at all times when operating this equipment. Failure to read and understand the safety messages and operating instructions could result in injury to yourself and others. Potential hazards associated with the operation of this equipment will be referenced with hazard symbols which may appear throughout this manual in conjunction with safety messages.
Safety Information geNeRaL SaFeTy CauTION NeveR operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective devices required by the job or city and state regulations. Avoid wearing jewelry or loose fitting clothes that may snag on the controls or moving parts as this can cause serious injury. NeveR operate this equipment when not feeling well due to fatigue, illness or when under medication.
Safety Information TROWeL SaFeTy NOTICE aLWayS keep the machine in proper running condition. DaNgeR Engine fuel exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled. The engine of this equipment requires an adequate free flow of cooling air. NeveR operate this equipment in any enclosed or narrow area where free flow of the air is restricted.
Safety Information BaTTeRy SaFeTy NOTICE NeveR run engine without an air filter or with a dirty air filter. Severe engine damage may occur. Service air filter frequently to prevent engine malfunction. NeveR tamper with the factory settings of the engine or engine governor. Damage to the engine or equipment can result if operating in speed ranges above the maximum allowable. FueL SaFeTy DaNgeR DaNgeR DO NOT drop the battery. There is a possibility that the battery will explode.
Safety Information TRaNSpORTINg SaFeTy CauTION NeveR allow any person or animal to stand underneath the equipment while lifting. Ride-on trowels are very heavy and awkward to move around. Use proper heavy lifting procedures and DO NOT attempt to lift the trowel by the guard rings. NeveR lift trowel with the operator on the machine. NOTICE The easiest way to lift the trowel is to utilize the lift loops that are welded to the frame.
Safety Information Avoid sharp turns to prevent rolling. Trailer should be adjusted to a level position at all times when towing. Raise and lock trailer wheel stand in up position when towing. Place chock blocks underneath wheel to prevent rolling while parked. Place support blocks underneath the trailer’s bumper to prevent tipping while parked. Use the trailer’s swivel jack to adjust the trailer height to a level position while parked.
DIMENSIONS/SPECIFICATIONS EHTX C-HEIGHT B-WIDTH A-LENGTH Figure 1. EHTX44Y5 Dimensions Table 1. EHTX44Y5 Specifications A–Length – in. (cm) 96.75 (246) B–Width – in. (cm) 50.0 (127) C–Height – in. (cm) 57.0 (145) Weight – lbs. (kgs.) Operating 1,946 (882.7) Weight – lbs. (kgs.) Shipping (Less Pallet Material) 1926 (873.6) Blade Tip Speed – FPM (m/s) 1,924 (9.9) Rotor – RPM 0 to 160 Path Width – in. (cm) 91 (231) Hydraulic Oil Capacity Hydraulic Oil1 7.0 gal. (26.
SPECIFICATIONS Table 2. Noise and Vibration Emissions Guaranteed ISO 11201:2010 Based Sound Pressure Level at Operator Station in dB(A)a Guaranteed ISO 3744:2010 Based Sound Power Level in dB(A)b Whole Body Vibration Per ISO 2631-1:1997+A1:2010 in m/s2 ∑A(8) 89 106 0.06 a. With an uncertainty factor K of 2.5 dB (A) included per Note 1 in section 7.2.1 of EN 12649::2008+A1:2011 b. With an uncertainty factor K of 1.5 dB (A) included per Note 1 in section 7.2.1 of EN 12649::2008+A1:2011 NOTES: 1.
GENERAL INFORMATION Intended Use Engine Operate the EHTX44Y ride-on trowel, tools and components in accordance with the manufacturer's instructions. Use of any other tools for stated operation is considered contrary to designated use. The risk of such use lies entirely with the user. The manufacturer cannot be held liable for damages as a result of misuse. This trowel is equipped with a liquid cooled 44 HP Yanmar diesel engine.
CONTROLS AND INDICATORS 4 5 6 2 1 13 14 3 7 16 15 EHTX 18 8 9 12 10 11 17 19 10 12 Figure 2. EHTX Controls and Components (Front) Figure 2 and Figure 3 show the location of the controls, indicators and general maintenance parts. The function of each control, indicator or maintenance part is explained below and on next page. 1. Seat – Place for operator to sit. Trowel blades will not rotate unless operator is seated. Seat is adjustable. 2.
CONTROLS AND INDICATORS 20 25 26 27 28 24 29 29 30 31 23 22 21 Figure 3. EHTX Controls and Components (Rear) 20. Documentation Box – Storage for documentation and other information regarding the trowel. 27. Blade Pitch Control (Twin Pitch)™ – Adjusts the blade pitches simultaneously. 21. Battery – Provides +12V DC power to the electrical system. 28. Steering Control (Right Side) – Allows the unit to move in either a forward, reverse left or right direction. 22.
ENGINE COMPONENTS 22 11 6 12 16 12 17 23 1 18 9 15 3 19 10 2 4 7 21 5 8 14 13 6 20 Figure 4. Basic Engine Components Figure 4 shows the basic engine components and their functions. The manufacturer's engine manual provides further instructions and details of operation and servicing. 1. Fuel Filter – Removes dirt and water from the engine fuel. 2. Engine Stop Lever – This lever restricts engine speed (high idle and low idle) through a speed control device linked to the accelerator system. 3.
SETUP Trowel Setup Instructions The purpose of this section is to assist the user in the setting up of a NEW trowel. If your trowel is already assembled (seats, handles, knobs and battery), then this section can be skipped. DANGER Use all safety precautions specified by the battery manufacturer when working with the battery. Flammable, explosive gas. (produces hydrogen gas while charging or during operation). Keep area around battery well ventilated and keep from any fire source.
INSPECTION This section is intended to assist the operator with the initial start-up of the trowel. It is extremely important that this section be read carefully before attempting to use the trowel in the field. DO NOT use your ride-on power trowel until this section is thoroughly understood. hydrauic Oil Level Determine if the hydraulic oil is low by observing the level of oil in the hydraulic oil sight glass, (Figure 7). The hydraulic tank has an elevated overflow bottle.
OPERATION STARTING THE ENGINE ENGINE SPEED CONTROL LEVER 1. Place one foot on the trowel's platform, grab hold of the hand grip located on the front frame, and lift yourself onto the trowel, then sit down in the operator's seat. DO NOT use the joysticks to lift yourself onto the trowel. HIG H NOTICE LO W Pulling on the joysticks repeatedly will weaken the units. ALWAYS use the grab handles to lift yourself on the trowel. NOTICE Figure 9. Engine Speed Control Lever (Low) 4.
OPERATION 6. Turn ignition key fully clockwise and listen for engine to start. Once engine has started release ignition key. Let the engine warm for a few minutes. 7. Place the engine speed control lever, (Figure 12) in the HIGH position. ENGINE SPEED CONTROL LEVER 2. Push both the left and right Control Joysticks forward. See Figure 14 FORWARD LEFT JOYSTICK CONTROL LEFT FORWARD REVERSE RIGHT REVERSE RIGHT JOYSTICK CONTROL LO W Figure 14. Left and Right Control Joysticks Figure 12.
OPERATION 3. With your right foot quickly depress the right foot pedal halfway. Notice that the ride-on power trowel begins to move in a forward direction. Return both joystick controls to their neutral position to stop forward movement, then remove your right foot from the right foot pedal. 4. Practice holding the machine in one place as you increase blade speed. When about 75% of maximum blade speed has been reached, the blade will be moving at proper finishing speed.
OPERATION NOTICE Important! To get the blades absolutely flat for using float pans follow these steps: 1. Press right Twin Pitch™ rocker switch all the way down. 2. Press left pitch rocker switch upward a little. 3. Press right Twin Pitch™ rocker switch all the way down again. 4. Press left pitch rocker switch all the way down. Engine Shut-Down 1. Return the engine speed control lever, (Figure 18) to low idle, and allow the engine to idle for a minimum 5 minutes.
mAINTENANCE l Table 5.
mAINTENANCE Air Cleaner NOTICE When performing any maintenance on the trowel or engine, follow all safety messages and rules for safe operation stated at the beginning of this manual At the front of this manual there is a “Daily Pre-Operation Checklist”. Make copies of this checklist and use it on a daily basis . WARNING Accidental starts can cause severe injury or death.
mAINTENANCE 6. To clean the main element (paper air filter) as referenced in Figure 20, tap the filter element several times on a hard surface to remove dirt, or blow compressed air (not to exceed 30 psi (207 kPa, 2.1 kgf/cm2) through the filter element from the inside out. DO NOT OVERFILL UPPER LIMIT LOWER LIMIT (ADD OIL) MAIN PAPER AIR FILTER ELEMENT F DIPSTICK L Figure 21. Engine Oil Check BLOW COMPRESSED AIR FROM THE INSIDE OUT 5.
mAINTENANCE 3. Remove the drain plug to drain the oil. Radiator/Cooling System 4. After oil is sufficiently drained, securely tighten the drain plug. Coolant (Antifreeze/Summer Coolant/ Water) 5. Using a filter wrench, turn the oil filter counter-clockwise to remove. YANMAR recommends antifreeze/summer coolant for use in their engines, which can be purchased in concentrate (and mixed with 50% demineralized water) or pre-diluted. See the Yanmar Engine Owner’s Manual for further details. 6.
mAINTENANCE Radiator Maintenance Fuel Filter 1. Check radiator for leaks that would indicate corrosion or damage. Replace the engine fuel filter (Figure 25) every 800 hours. Refer to your engine manual for specific details to perform this operation. 2. Check coolant level daily. Top off as necessary. Always use recommended coolant/antifreeze. Use the mixing ratios specified by the coolant/antifreeze manufacturer or Table 8. Replace coolant/antifreeze at least once a year. 3.
mAINTENANCE Oil And Fuel Lines Battery/Charging System 1. Check the oil and fuel lines and connections regularly for leaks or damage. Repair or replace as necessary. 2. Replace the oil and fuel lines every two years to maintain the line's performance and flexibility. Checking The V-Belt The V-belt (Figure 27) needs to be replaced as soon as it starts to show signs of wear. NEVER use a defective V-belt under any circumstances.
mAINTENANCE Engine Tune-Up Right Side Trowel Speed Adjustment See your engine manual for specific information on tuning up your engine. The right side trowel speed is adjusted by changing the length of the connecting rod (Figure 29) on the pump actuation levers.This is accomplished by adjusting the right side adjustment nut. NOTICE See the engine manual supplied with your machine for appropriate engine maintenance schedule and troubleshooting guide for problems.
mAINTENANCE pitch could make the machine difficult to control. BLADE PITCH ADJUSTMENT BOLT This is due to the surface area in contact with the concrete (the blade set with the greater contact area tends to stick to the concrete more). The right rocker switch (Twin Pitch™) pitches both blades at the same time while the left rocker switch (Single Pitch) will pitch only the left blade. Moving the switches forward increases the pitch while moving them backward decreases the pitch, (Figure 30).
mAINTENANCE If, after making Blade Pitch adjustments the machine is still finishing poorly, blades, trowel arms, and trowel arm bushings may be suspect and should be looked at for adjustment, wear, or damage. See the following sections. Stabilizer Ring Removal 5. To remove the outer stabilizer ring, (Figure 32), remove the six bolts at the end of each spider arm. STABILIZER RING HEX NUT HEX CAP SCREW TROWEL ARM WASHER Figure 33. Blade Removal HEX CAP SCREW ROD END FLAT WASHER Figure 32.
mAINTENANCE Trowel Arm Adjustment Use the following procedure to check and adjust trowel arms, and check for worn or damaged components when it becomes apparent that the trowel is finishing poorly or in need of routine maintenance. 5. Figure 35 illustrates the "correct alignment " for a spider plate (as shipped from the factory). BLADE MOUNTING BAR TROWEL ARM Look for the following indications. Trowel arm alignment, worn spider bushings or bent trowel arms may the cause.
mAINTENANCE 2. Remove spider to hydraulic motor retainingscrew. 3. Carefully lift the upper trowel assembly off of the spider assembly. A slight tap with a rubber mallet may be necessary to dislodge the spider from the main shaft of the hydraulic motor. 2-PIECE BRONZE BUSHING HEX HD.SCREW 4. For reassembly apply Blue Loctite #242 to the spider retaining screw and torque to 130 ft.-lbs. (176 N.m) Trowel Arm Removal 1. Remove the hardware securing the stabilizer ring to the trowel arm (Figure 37).
mAINTENANCE Checking Trowel Arm Straightness Trowel arms can be damaged by rough handling, (such as dropping the trowel on the pad), or by striking exposed plumbing, forms, or rebar while in operation. A bent trowel arm will not allow the trowel to operate in a smooth fluid rotation. If bent trowel arms are suspect, check for flatness as follows, refer to Figure 40 and Figure 41: Lever Mounting Slot (Left Arm Shown) 3.
mAINTENANCE Re-Assembly NOTICE Arms with CLOCK-WISE blade rotation use the fixture arm in the UP position (A in Figure 43). Arms with COUNTER CLOCK-WISE blade rotation use the fixture with the fixture arm in the DOWN position. (B in Figure 43). 3. Unscrew the locking bolts on the adjustment tool and place the trowel arm into the fixture channel as shown in Figure 44. A thin shim may be required to cover the blade holes on the trowel arm.
mAINTENANCE Installing Pans Onto Finisher Blades These round discs sometimes referred to as "pans" attach to the spiders arms and allow early floating on wet concrete and easy movement from wet to dry areas. They are also very effective in embedding large aggregates and surface hardeners. 3. Attach the blade tie-downs to the far side of the Z-Clip brackets with tie-down knobs as shown in Figure 45. 4.
mAINTENANCE To access the right and left hydrostatic pump test ports, remove the grill guard. It is best to use two gauges simultaneously, but it is possible to use only one gauge and repeat the procedure for each side. Connect the pressure gauges to right and left test ports as shown in Figure 47. To fully test the hydrostatic system, the spiders will need to be locked so that they cannot rotate.
mAINTENANCE Checking Steering Pressure Steering Pressure Adjustment Steering pressure is also checked at either one of the pressure diagnostic couplers (Figure 48) under the right grill guard. Check steering pressure at either coupler with a 300-600 PSI gauge. Remember, DO NOT depress the foot pedal with the 300600 PSI gauge installed. Immediate damage to the gauge will occur. WARNING 1. Remove right grill guard. 2. Install 300 or 600 PSI gauge (Figure 49).
mAINTENANCE Pitch Pressure Check 2. Press the left pitch rocker switch downward. To gain access to the pitch block (Figure 50), removal of the right-rear seat frame panel may be necessary. Pitch pressure must be measured with at least one of the pitch switches activated. When pitch switches are unactivated, the pitch pressure will be the same as the charge/steering pressure. Proper pitch pressure is 2300 PSI (2250 - 2350 PSI).
mAINTENANCE Pitch Pressure Adjustment NOTICE NEVER allow the pitch pressure to exceed 2700 PSI or equipment damage may result. NOTICE DO NOT attempt to adjust the Pitch Pressure Relief Valve while the engine is running. 1. Remove right grill guard and right rear seat frame panel. 2. With the engine OFF, remove the end cover (Figure 53) on relief valve. RELIEF VALVE END COVER RELIEF VALVE ADJUSTMENT POINT PITCH BLOCK Figure 53. Pitch Pressure Adjustment 3.
B A B A W1 W3 W1 W2 9X 12 (2) 12178 SKT TERMINAL (2) 12171 SEAL-GREEN W7 L. SPRAY PUMP R.
hydraulic DIAGRAM PO 4 5 2050 PSI #10 SAE S1 1 1 3 #10 SAE PI G #10 SAE #4 SAE 4 1 2 1 2 .020 Ø #6 SAE 6 PIS P2 3 2 2 #10 SAE 1 2 C1 COOLER #20 SAE TON P4 C2 S2 #6 SAE TANK S3 #10 SAE 1 2 C3 S #10 SAE 5 PSI #6 SAE 1 2 3 4 1 2 P3 M1 M2 #10 SAE #10 SAE #10 SAE 2 2 PIS SP 1 #6 SAE .020 Ø #6 SAE 6 TON P1 S4 C4 #6 SAE 2 T1 T2 #10 SAE #10 SAE T3 #8 SAE T #6 SAE #12 SAE #10 SAE TBD P 44-60 HP 19.8 19.8 9.
TROUBLESHOOTING Troubleshooting (Ride-On Hydraulic Trowel) Symptom Safety stop switch not functioning. possible problem Other problems? Consult engine manufacturer’s manual. Loose wire connections? Check wiring. Replace as necessary. Bad contacts? Replace seat cushion (contains the switch). Blades? Make certain blades are in good condition, not excessively worn. Finish blades should measure no less than 2"" (50mm) from the blade bar to the trailing edge, combo blades should measure no less that 3.
TROUBLESHOOTING Troubleshooting (Ride-On Hydraulic Trowel) - continued Symptom possible problem Wiring? Check all electrical connections, including the master on/ off switch and check to see if wiring is in good condition with no shorts. Replace as necessary. Lights? Check to see if light bulbs are still good. Replace if broken. Retardant? Check retardant level in tank. Fill tank as required. Wiring? Check all electrical connections, including master on/off switch connections.
TROUBLESHOOTING Troubleshooting (engine) Symptom Engine will not start or start is delayed, although engine can be turned over. At low temperatures engine will not start. Engine fires but stops soon as starter is switched off. Engine stops by itself during normal operation. Low engine power, output and speed. possible problem Solution No Fuel reaching injection pump? Add fuel. Check entire fuel system. Defective fuel pump? Replace fuel pump.
TROUBLESHOOTING Troubleshooting (engine) - continued Symptom Low engine power output and low speed, black exhaust smoke. Engine overheats. possible problem Solution Air filter blocked? Clean or replace air filter. Incorrect valve clearances? Adjust valves per engine specification. Malfunction at injector? See engine manual. Too much oil in engine crankcase? Drain off engine oil down to uppermark on dipstick.
Operation Manual HERE’S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING United StateS Multiquip Corporate Office 18910 Wilmington Ave. Carson, CA 90746 Contact: mq@multiquip.com MQ Parts Department Tel.
