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MEC2140 Transmissions/Transaxles

Intermediate · 1 credit · TMT - Trades, Manufacturing and Transportation

Description
Students perform inspection service and repair procedures on manual transmissions, transaxles and clutch assemblies.
Prerequisite
MEC2130: Drive Line
Parameters
Access to pilot shafts, specialized manual transmission tools, presses, pullers and related resources, and clutch, transmission and transaxle units.

Outcomes The student will:

  • 1 demonstrate safe work practices when working on transmissions and transaxles

    • 1.1 demonstrate knowledge of and follow laboratory safety procedures

    • 1.2 identify back problems associated with lifting heavy objects

  • 2 identify parts and trace power flow through a clutch, manual transmission and differential and manual transaxle assembly

    • 2.1 describe the operation of a clutch assembly, a manual transmission and a manual transaxle during various modes of vehicle operation

    • 2.2 describe the relationship that the clutch and manual gear box have to other parts of the drive line

    • 2.3 identify the parts of the assemblies, using the proper technical terms

    • 2.4 for each gear, identify the path of power through transmission or transaxle and compare the gear ratio of each power routing, as well as the direction of rotation

  • 3 inspect, diagnose, service and repair clutch, manual transmission or manual transaxle assemblies

    • 3.1 demonstrate how to:

      • 3.1.1 check clutch pedal operation, travel and free play adjustment

      • 3.1.2 remove clutch inspection cover and check for wear to the clutch disc and pressure plate, as well as other visually available parts

      • 3.1.3 inspect clutch linkage for faults and/or wear

      • 3.1.4 inspect shifting linkages for any undue looseness or signs of wear

      • 3.1.5 check lubricant for level and type and recommended change interval

      • 3.1.6 inspect mounts, braces and isolator cushions for wear fatigue or damage

      • 3.1.7 inspect the assembly for leakage and note location and seal at fault

      • 3.1.8 prepare a repair cost estimate, prior to commencement of repairs, as identified during inspection or servicing

    • 3.2 formulate probable causes for typical problems that develop with clutches including:

      • 3.2.1 grabbing

      • 3.2.2 slipping

      • 3.2.3 failing to release

      • 3.2.4 noise when disengaged

      • 3.2.5 noise when engaging

    • 3.3 where possible, relate the hypothetical situation to a real vehicle condition

    • 3.4 formulate probable causes for typical problems that develop with manual gear boxes including:

      • 3.4.1 gears clashing

      • 3.4.2 hard shifting

      • 3.4.3 jumping out of gear

      • 3.4.4 noises in specific gears

      • 3.4.5 inability to engage gears

      • 3.4.6 shifter noisy or loose

      • 3.4.7 bearing noises

    • 3.5 perform the clutch repairs, as identified and estimated to the teacher and agreed upon by the owner of the vehicle AND/OR

    • 3.6 remove and reinstall a clutch disc, pressure plate assembly, pilot bearing and throw-out bearing; check each part to confirm the continued serviceability of the assembly and clean each part before reassembly; adjust linkage to specified clearances

    • 3.7 adjust clutch linkage for correct free play at pedal or, in the case of an automatic clutch adjuster, confirm the operation as being correct

    • 3.8 follow through on agreed-upon transmission/transaxle repairs, identified and estimated to the teacher and the owner of the vehicle AND/OR

    • 3.9 disassemble, inspect and reassemble a three- or four-speed manual transmission with external linkage and constant mesh gearing

    • 3.10 replace manual transmission lubricant with the specified type

  • 4 demonstrate basic competencies

    • 4.1 demonstrate fundamental skills to:

      • 4.1.1 communicate

      • 4.1.2 manage information

      • 4.1.3 use numbers

      • 4.1.4 think and solve problems

    • 4.2 demonstrate personal management skills to:

      • 4.2.1 demonstrate positive attitudes and behaviours

      • 4.2.2 be responsible

      • 4.2.3 be adaptable

      • 4.2.4 learn continuously

      • 4.2.5 work safely

    • 4.3 demonstrate teamwork skills to:

      • 4.3.1 work with others

      • 4.3.2 participate in projects and tasks

  • 5 identify possible life roles related to the skills and content of this cluster

    • 5.1 recognize and then analyze the opportunities and barriers in the immediate environment

    • 5.2 identify potential resources to minimize barriers and maximize opportunities

Program of Studies 2009. Source document, © Alberta Education.