Automotive Manual Drivetrains 2

Course Description

AER0393C — Automotive Manual Drivetrains 2 is a Postsecondary Adult Vocational (PSAV) clock-hour course in the Florida Department of Education's Automotive Service Technology career-preparatory program (Program Number I470301; Career Cluster: Transportation, Distribution & Logistics). The course extends introductory drivetrain coursework with intermediate-level diagnosis and repair of manual transmissions, transaxles, clutches, driveshafts, U-joints, CV joints, differentials, and four-wheel-drive transfer cases. The "C" suffix denotes integrated lecture and laboratory with hands-on work on training units and live vehicles.

This course is offered at Florida district technical colleges and career centers delivering the FLDOE Automotive Service Technology Curriculum Framework. The "2" in the title indicates this is a continuation course in the manual-drivetrain sequence, focusing on practical diagnosis and overhaul rather than introductory concepts. Successful program completion supports preparation for ASE A3 (Manual Drive Train and Axles) certification.

Learning Outcomes

Required Outcomes

Upon successful completion of AER0393C, students will be able to:

• Diagnose and repair clutch system components: clutch disc, pressure plate, release bearing (throwout bearing), pilot bearing/bushing, flywheel; hydraulic clutch master and slave cylinders.
• Diagnose and repair manual transmissions: synchronizers, gear sets, shift forks and rails, shift linkage; oil-leak diagnosis; bearing replacement.
• Diagnose and repair manual transaxles (front-wheel-drive applications): transaxle removal and installation, internal disassembly, synchronizer service, differential carrier service.
• Diagnose and service driveshafts and U-joints: U-joint replacement, balance, runout measurement, slip-yoke service.
• Diagnose and service CV (constant velocity) joints and axle shafts: outer and inner CV joint replacement, boot service, FWD axle shaft service.
• Diagnose and service differentials: ring and pinion gear inspection (tooth contact pattern, backlash measurement); side and pinion bearing service; axle seal replacement; limited-slip differential identification and service basics.
• Diagnose and service transfer cases for four-wheel-drive applications: chain or gear-drive transfer cases; shift mechanism (mechanical, electric, electronic); fluid service.
• Apply standard diagnostic procedures: noise, vibration, and harshness (NVH) diagnosis; road test correlation; vibration analyzer use.
• Use specialty tools safely and correctly: pullers, presses, dial indicators, micrometers, torque wrenches, transmission jacks, snap-ring pliers.
• Apply safety practices: vehicle lift safety; hydraulic safety; pinch-point and crush-injury prevention; PPE; manual-lifting limits and team-lift practices.
• Document repair work per shop and warranty standards.

Optional Outcomes

• Develop introductory familiarity with dual-clutch transmissions (DCT) service.
• Develop awareness of electronic transfer-case control and CAN-bus integration.
• Apply more advanced differential setup: pinion depth, ring-gear pattern, preload — typically reserved for upper-level students with mentor supervision.

Major Topics

Required Topics

• Clutch Systems: Single-disc and multi-disc clutch construction; pressure plate types (diaphragm, Borg & Beck); release mechanism (mechanical, hydraulic); flywheel resurfacing/replacement; pilot bearing service.
• Manual Transmissions: Synchronizer construction and operation; gear-set inspection; shift mechanism diagnosis; oil-leak diagnosis at front input shaft, output shaft, shift-rail seals; bearing replacement.
• Manual Transaxles: FWD transaxle layout; differential integration; transaxle removal and installation procedures (varies dramatically by vehicle); internal service.
• Driveshafts and U-Joints: Driveshaft balance and angle; U-joint (universal joint) construction, service, and replacement; slip-yoke service; runout measurement.
• CV Joints and FWD Axles: Outer (Rzeppa) and inner (tripod, double-offset) CV joint construction; boot replacement (and typical "small tear discovered — full joint contamination" failure mode); axle shaft replacement.
• Differentials: Open differential operation; ring-and-pinion meshing; tooth contact pattern (toe, heel, face, flank); backlash measurement; preload setup; axle seal service; limited-slip and locking differential identification.
• Transfer Cases: Part-time versus full-time 4WD; chain-drive versus gear-drive construction; shift mechanism types; fluid service intervals.
• NVH Diagnosis: Driveline noise patterns (gear whine, U-joint clunk, CV-joint click, wheel-bearing growl); road-test correlation; vibration analyzer use.
• Specialty Tools: Bearing pullers and pressers; dial indicators (axial and radial); torque wrenches (click and beam); transmission jacks; snap-ring pliers (internal and external).
• Safety: Vehicle lift safety; hydraulic equipment safety; manual-lifting limits (team lifting for transmissions, transfer cases); PPE.

Optional Topics

• Dual-Clutch Transmissions (DCT): Volkswagen DSG, Ford PowerShift, Porsche PDK, others; service introduction.
• Electronic Transfer Cases: Servo-actuated and electric-shift designs; CAN-bus diagnostic procedures.
• Advanced Differential Setup: Pinion depth shimming; ring-gear pattern adjustment; complete carrier rebuild.

Resources & Tools

• Industry Texts: James D. Halderman Automatic Transmissions and Transaxles and Manual Drivetrains and Axles (Pearson); Tim Gilles Automotive Service (Cengage); CDX Learning Systems curriculum.
• Service Information: Mitchell ProDemand, ALLDATA, OEM service portals (Ford TSB, GM SI, Toyota Tech Info, etc.).
• Test Equipment: Vibration analyzer (Snap-on Vibrate, EVA, Pico); dial indicators; magnetic base; torque wrenches; transmission jack; specialty tools (pinion-depth gauges, side-bearing pullers, snap-ring pliers).
• Industry Standards: SAE standards; ASE A3 (Manual Drive Train and Axles) test specifications.
• FLDOE Curriculum Framework: Automotive Service Technology PSAV (Program Number I470301).
• Career and Technical Student Organization (CTSO): SkillsUSA.

Career Pathways

Successful completion supports advancement toward Automotive Service Technician roles with manual-drivetrain specialization. Specific career destinations include:

• Automotive Service Technician with drivetrain specialization at dealerships, independent shops, fleet operations.
• Drivetrain Specialist at independent transmission shops (AAMCO, Cottman, and independent specialists).
• Heavy Truck and Equipment Mechanic with additional cross-training (the manual-drivetrain skill transfers well to commercial vehicle work).
• Performance/Racing Drivetrain Specialist — Florida has substantial drag racing and stock-car activity supporting specialty drivetrain work.

Special Information

Industry Certifications

This course directly supports preparation for the ASE A3 (Manual Drive Train and Axles) certification — one of the eight ASE Automobile Technician test areas required for ASE Master Technician status. ASE entry-level certifications are available to current students; full ASE certification requires 2 years of qualifying work experience plus passage of the exam.

Manual Transmission Trend Note

The U.S. passenger-car market has seen a substantial decline in manual-transmission availability over the past 15 years (now under 2% of new-car sales). However, manual transmissions remain important for: (1) the older-vehicle service market, which is sizable; (2) commercial vehicles (medium and heavy trucks); (3) performance and enthusiast vehicles; (4) developing-market exports; and (5) the transfer-case and differential service that applies to nearly all rear-wheel-drive and four-wheel-drive vehicles regardless of transmission type. Students should expect strong demand for manual-drivetrain skills despite the new-car trend, especially given the older-vehicle service market.

Program Structure (PSAV / Clock-Hour)

AER0393C clock-hour allocation typically ranges from 150 to 225 clock hours. As a "2" continuation course, AER0393C builds on the introductory drivetrain coursework (typically AER0392C or comparable).