2013 Texas FFA Area Tractor Technician CDE

1. 2013 Texas FFA Area Tractor Technician CDE Part II: Diagnosis of Components

2. Presentation Contents • 20 components • Make & model provided when applicable • Appropriate tools provided • 5 T-F statements per component

3. 1: Connecting Rods

4. 1: Connecting Rods • Connecting Rod “A” is made from steel. • Connecting Rod “B” is made from aluminum. • Connecting Rod “B” shows signs of overheating. • Connecting Rod “B” shows signs of galling. • Connecting Rod “B” is suitable for continued use.

5. 2: Crankcase Oil & Container • DO NOT SHAKE OIL SAMPLE!!! • Round Magnet

6. 2: Oil Sample & Container • 10W-30 is a single grade motor oil. • API service is labeled “LE” on the container. • Oil sample is contaminated with water. • Oil sample is contaminated with metal. • Oil sample is suitable for continued use.

7. 3: Thermostat & Gasket • Perform visual inspection

8. 3: Thermostat & Gasket • Gasket has never been installed. • Gasket requires additional sealant. • Gasket should be returned to service. • Thermostat opens at 180 degrees Fahrenheit. • Corrosion has caused a seep hole in the thermostat.

9. 4: Camshaft • Kubota Diesel • Perform visual inspection

10. 4: Camshaft • Camshaft is for a 3 cylinder engine. • Camshaft gear shows excessive wear. • Journal marked “B” shows signs of galling. • Cam lobes exhibit excessive wear. • Camshaft should be returned to service without repair.

11. 5: Piston Ring • Ford Ring • Review ring for wear and abnormalities

12. 5: Piston Ring • This is an example of a high compression piston ring. • The ring is bent, and should not be repaired. • Function of this ring is to apply oil to the cylinder wall. • Ring shows excessive wear and/or damage from disassembly. • Ring should be returned to service.

13. 6: Valve • John Deere 8520 • Perform visual inspection

14. 6: Valve • Valve is an intake valve. • Valve shows carbon build up. • Valve face indicates heavy wear. • End of valve stem shows excessive wear. • Valve should be returned to service without repair.

15. 7: Piston Assembly • Visually inspect components

16. 7: Piston Assembly • Piston shows signs of galling. • Piston shows damage as a result of metal fragments inside cylinder. • Piston shows signs of overheating. • A problem exists between the wrist pin & connecting rod. • Piston, connecting rod and wrist pin are suitable for continued service.

17. 8: Coolant

18. 8: Coolant • Maximum freeze protection is a mixture of 70% antifreeze and 30% water. • As per label, this coolant does not contain ethylene glycol. • Given cooling system capacity is 10 quarts. Four quarts of antifreeze is required to protect to a temperature of minus 12 degrees Fahrenheit. Test coolant sample: • Coolant provides protection to minus 20 degrees Fahrenheit. • Coolant provides boil over protection to 262 degrees Fahrenheit.

19. 9: Sleeve • Visually inspect component • Tools: telescoping gauge and micrometer • Line marked on sleeve for location of measurement

20. 9: Sleeve • This is an example of a dry sleeve. • A ridge has formed as the result of the piston at the top of the sleeve. • Average internal diameter at position A is 4.971 inches. • Average internal diameter at position A is 3.971 inches. • Piston is suitable to return to service without repair.

21. 10: Fuel Filter • Review filter labels • “gasoline poured into filter to produce recognizable gasoline odor”

22. 10: Fuel Filter • Maximum flow of filter is 18 gallons per minute. • Filter gasket requires lubrication prior to installation. • Filter should be tightened by hand 1 and ¾ turns after gasket contacts flange surface. • Filter has been used in a gasoline engine. • Filter and gasket are both suitable for continued use.

23. 11: Wiring Diagram • Ford 5610 • Review diagram

24. 11: Wiring Diagram • Item # 21 & 22 are speakers that are attached to a cd player/radio. • Item # 4 has 2 bulbs in a single housing. • Item #23 is the clock and is grounded to the chassis with a purple wire. • The windscreen wiper motor grounds to the frame through the cab harness connector. • The green wire that feeds the wiper motor also feeds the clock.

25. 12: Fuel pump • Case/New Holland • Visually inspect component

26. 12: Fuel pump • This injector pump was removed from a 4 cylinder engine. • Item #1 is the fuel shut off solenoid. • Item #2 is used for the throttle “wide open” adjustment. • Item # 3 is used to adjust engine/pump timing. • Injector timing should be adjusted with engine running @ 1000 rpm.

27. 13: Electrical Components • Various applications • Review objects

28. 13: Electrical Components • The item labeled “A” is a diode trio and requires 3 tests locations to diagnose. • The item labeled “B” is a rectifier bridge and requires 12 test locations to diagnose. • The item labeled “C” is an armature. • The item labeled “D” is stator. • The rotor has an open circuit .

29. 14: Bearings • Inspect each bearing and/or component

30. 14: Bearings • Bearing “A” is a plain or friction bearing, that can support radial and axial loads both. • Bearing “D” is an antifriction bearing that can support radial and axial loads both. • Bearing “B” is a friction bearing that uses a clamp fit for installation. • Bearing “C” is a friction bearing that has seized and spun in the connecting rod cap. • The bearing race shows excessive wear due to corrosion or metal fatigue and should be replaced.

31. 15: Assorted Tools

32. 15: Assorted Tools • The tool labeled “A” is used to clean piston ring grooves. • The tool labeled “B” is used to remove 1/4”, 6 point nuts and bolts. • The tool labeled “C” is used to align clutch disks during installation of pressure plate. • The tool labeled “D” are used to crimp solderless wiring terminals. • The tools labeled “E”, “F” & “G” are all used to remove broken fasteners.

33. 16: MSDS Sheet • MSDS Sheet

34. 16: MSDS Sheet • According to the MSDS sheet, ULSD is identified as a Toxic, Combustible liquid. • The flammability rating of the ULSD is “Extreme.” • According to the First Aid measures, if ULSD is ingested, vomiting should be induced. • According to the MSDS sheets, the supplied gloves are acceptable as hand protection. • According to the MSDS sheets toxicological information, repeated over exposure can cause liver & kidney damage.

35. 17: Turbo Charger • Inspect Holset turbocharger • Specifications sheet

36. 17. Turbocharger • This turbo charger is a model HX35 that is manufactured for Holset. • The turbo charger is an exhaust gas driven air compressor. • The turbo charger uses engine coolant to prevent bearing and shaft overheating. • In the event that the turbine blades become damaged, it is acceptable to straighten them. • The bearing clearance for axial movement is within specifications.

37. 18: Belts • John Deere Tractors • Specification Sheets

38. 18: Belts • Belt “A” is a “V type belt. • Belt “B” is a “serpentine” or “V- ribbed” type belt. • Belt A is 26 inches long. • Belt “C” shows signs of excessive damage and should be replaced. • Belt “B” shows signs of excessive damage and should be replaced.

39. 19: Operator’s Manual • JD Manual

40. 19: Operator’s Manual • John Deere 5000 series tractors should have the fuel filter replaced at every 500 hours. • According to the Operators manual pg 145-3, Engine break in oil should be changed after the first 75 hours. • The operators manual states that the “TOE-In should be adjusted to 1/8” to ¼”. • According to page 80-3 of the operator’s manual, flood lamps should never be used while transporting the tractor due to the hazard of confusing drivers approaching the tractor from the rear. • The purpose of the operator’s manual is to learn how to operate and service ALL equipment correctly.

41. 20: Hydraulic Pump • John Deere 420 • Tool: feeler gauge • Specifications sheets, service manual

42. 20: Hydraulic Pump • The oil pump is driven by the cam gear. • The needle bearings should be removed, inspected and reinstalled to ensure continued service. • The pump gears are interchangeable and can be replaced. • The oil pump shows major damage and is not suitable for continued service. • The pump cover bolts should be torqued to 24 to 28 ft. lbs.

43. Credits • Thank you to Rick Elmore, Dr. Doug Kingman, and the “crew” of professionals for working with this CDE. • Area Components used at: • TSTC Waco, TX • SHSU Huntsville, TX • WTAMU Canyon, TX

44. ACKNOWLEDGEMENTS Kirk Edney, IMS, developed the initial presentation SHSU provided the content and text