GOVERNMENT OF INDIA SOUTHERN REGION FARM MACHINERY TRAINING AND TESTING INSTITUTE TRACTOR NAGAR PO: GARLADINNE DISTRICT: ANANTAPUR (A.

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2 i Manufacturer : M/s. VIETNAM AGRO TECH CO. LTD., Binh Da Ward Bien Hao VIETNAM (Self Propelled) (Walk behind Type) Report No. Machine-22/362 Month: July Year: 2012 GOVERNMENT OF INDIA SOUTHERN REGION FARM MACHINERY TRAINING AND TESTING INSTITUTE TRACTOR NAGAR PO: GARLADINNE DISTRICT: ANANTAPUR (A.P) Telephone No Website: Fax No fmti-sr@hub.nic.in

3 22 Top Middle Bottom 1 st Comp. Ring nd Comp. Ring Oil Ring wear limit (mm) 1.0 Ring side clearance Rings Ring side clearance (mm) Max. permissible limit (mm) 1 st Comp. Ring nd Comp. Ring 0.04 Oil Ring 0.07 Main & big end bearings Main bearings Bearing No. Not specified Diametrical Crankshaft Max. permissible limit (mm) clearance (mm) end float (mm) Diametrical clearance Crankshaft end float 1 Ball bearings 0.11 Not applicable Not specified Big end bearings Bearing No. Clearance (mm) Max. permissible limit (mm) Diametrical Axial Diametrical Axial Valve, guides and timing gears Pitting of seat/faces of valves : None Any visual damage to the teeth : None of timing gears Clearance between valve guides Discard limit and valve stem (mm) - Intake valve : NR Not specified - Exhaust valve : NR Not specified 24.2 Transmission gears: All the gears of the main transmission were inspected visually and found in normal working condition. 25 Reaper: All the gears & other components of the reaping bevel box were inspected visually and found to be in normal working condition. Other components of cutter bar assembly were inspected visually and found to be in normal working condition. 15 SUMMARY OF OBSERVATIONS, COMMENTS & RECOMMENDATIONS 15.1 Engine Performance i) The backup torque is 3.0 % ii) The maximum brake horse power of the engine at 1665/3330 rpm was observed as 2.9 kw during maximum power two hours test against the declared value of 2.9 kw.

4 23 iii) The specific fuel consumption corresponding to maximum power was measured as 390 g/kwh against the declared value of 365 g/kwh. The observed value is on higher side than the declared value. iv) Pre Cleaner may be fitted if it is used Northern/Western parts of the country. It should be looked into Mechanical Vibration: The amplitude of mechanical vibration on all the controls/assemblies marked as (*) in chapter 10 of this test report are high. This calls for dampening down of vibration to improve the operational comfort and service life of components The percentage of carbon and manganese of knife section was measured as and % respectively. The material of knife section does not meet the requirements of IS: in terms of percentage of carbon and manganese in the material of its construction Field Performance Test: Rate of work: i) The average area covered and time required for harvesting one hectare was recorded as to ha/h and 4.52 to 4.98 hours respectively. ii) The average hourly fuel consumption varies from 0.58 to 0.61 l/h & the fuel requires for harvesting one hectare area was recorded as 2.62 to 2.99 l iii) The average crop handled was recorded as 3788 to 5594 kg/h in the BPT variety of paddy Quality of work: i) The post harvest loss was recorded maximum as 0.41 %. ii) The crop conveyance loss was recorded as 4.11 to % which is considered on higher side. iii) The total machine loss was recorded as 4.24 to %, which is considered on higher side. iv) The stubble height was recorded as 77 to 96 mm. v) The crop harvested by the machine is left in windrows, which minimizes the time required for the collection and transportation of the crop Labour requirement: For continuous operation of the reaper two unskilled labours for cutting of the crop on sides and corners of the field to be harvested and two to three skilled operators are required Operator s comfort, safety and ease of operation: - The following requirements are considered essential from operator s safety and comfort point of view: - i) The machine is not provided with steering clutches and the brake for sudden/ emergency stopping of machine. A suitable steering and braking system shall be provided for easy turning and stopping the machine as and when required. This should be looked into. ii) The operator can operate the machine continuously for a maximum period of two hours. He feels fatigue and tired due to excessive vibrations of the machine. This calls for dampening down of vibration to improve the operational comfort and service life of components Wear of critical components:

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