DSL 546 - Power Trains I

Credits: 6
Lecture Hours: 2
Lab Hours: 8
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech

Class and lab activities in the design and operation of drivetrain components including clutches, manual transmissions, drive lines, rear axles and wheel bearings.
Competencies

Demonstrate knowledge of clutches on a written test
1. Identify the parts of a clutch assembly
2. Describe the operation of a clutch
3. Describe the adjustment of a push-release clutch
4. Describe the adjustment of a pull-release clutch
5. Outline the procedure for removing and replacing a clutch
6. Describe the function of a clutch brake
Adjust a pull release clutch in a vehicle
1. Obtain specific procedure from service manual
2. Adjust to manufacturer’s specifications
Remove a pull-release clutch from a flywheel
1. Select proper tools to remove the clutch
2. Inspect the clutch for wear patters
3. Reinstall the clutch in the correct order
4. Install the transmission with the release linkage in the correct position
Remove a SOLO clutch
1. Demonstrate the procedure obtained from service manual
2. Demonstrate ability to reset pressure plate to correct clearance for reuse
3. Demonstrate ability to reinstall clutch assembly and remove caging bolts
4. Explain setup procedure and demonstrate application of the setup procedure
Explain how the DM clutch operates
1. Demonstrate ability to remove and install a DM clutch
2. Identify the parts in a DM clutch
3. Evaluate a clutch for worn components
Demonstrate a working knowledge of clutch linkages
1. Describe how to perform adjustments for the clutch brake with mechanical linkage
2. Explain how to adjust clutch pedal free travel when mechanical linkage is used
3. Describe how to perform clutch brake adjustments when hydraulic release mechanisms are used
4. Demonstrate the ability to bleed a hy6draulic release clutch
5. Identify the parts of a mechanical release and a hydraulic release clutch
Demonstrate knowledge of standard transmissions on a written test
1. Identify various gear designs
2. Identify the components of the air systems found on the RT, RTLO, and FR series Eaton transmissions
3. Describe how each of the air system components functions in the air system
4. Demonstrate the ability to install and trouble shoot the transmission air system
5. Explain the relationship between speed and torque
6. Identify the major components found in the back box on a RT, RTO, and RTLO transmission
7. Describe how the inertia clutch performs in the RTLO series transmissions
8. Describe the major types of shift bar housings
9. Describe the difference between driven components and driving components
Evaluate a twin countershaft transmissions
1. Select proper tools to disassemble the transmission
2. Inspect wear patterns
3. Trace the power flow through each speed, including reverse
4. Calculate the gear ratios for all speeds, including reverse
5. Reassemble the transmission
6. Demonstrate the ability to time the needed components
7. Demonstrate the ability to shim the needed bearings and shafts in the transmission
8. Test run the transmission to check for correct operation and assembly procedures
9. Demonstrate knowledge of twin countershaft transmissions on a written evaluation
Demonstrate knowledge of automated mechanical transmissions on a written test
1. Identify the differences between an automated and standard transmission case and internal parts
2. Identify the components that are added to the transmission to allow for automated shifting
3. Demonstrate an understanding of how each shift is managed
4. Perform the electrical precheck
5. Demonstrate the ability to complete the pneumatic test
6. Perform the electrical start up test
7. Retrieve fault codes using the ignition switch
8. Retrieve active and inactive codes using diagnostic software
9. Clear all fault codes
Demonstrate knowledge of drive shafts on a written test
1. Name the parts of a drive line
2. Define the importance of phasing a drive line
3. Explain drive line alignment
4. Calculate driveshaft operating angles
5. Demonstrate the ability to remove and install a u-joint
6. Measure drive shaft run out
7. Demonstrate the ability to field balance a drive shaft
Demonstrate knowledge of wheel bearings and wheel rims on a written test
1. Explain the TMC method of adjusting a wheel bearing
2. Identify Budd type wheel mounting
3. Identify Hub Piloted wheel mounting
4. Identify Dayton wheel mounting
5. Explain why the different wheel mountings can not be intermixed
Demonstrate knowledge of rear axles on a written test
1. Identify different types of rear axles as used in trucks
2. Name the basic parts of a driving axle
3. Explain the operation of the carrier and differential assembly
4. Explain the operation of a double reduction rear axle
5. Explain the operation of an inter-axle differential
6. List the five general reassembly steps for a carrier assembly
Assess one single reduction carrier assembly
1. Select the proper tools to disassemble the carriers
2. Inspect the wear patterns
3. Check and set the pinion bearing pre-load
4. Set the pinion assembly depth
5. Set the carrier bearing pre-load
6. Set the ring gear assembly position (backlash).
7. Check gear tooth contact pattern
Evaluate a double reduction carrier assembly
1. Select the proper tools to disassemble the carrier
2. Inspect wear patterns
3. Check and set the pinion bearing pre-load
4. Set the pinion assembly depth
5. Set the carrier bearing pre-load and the backlash
6. Check the gear tooth contact
Evaluate one forward rear axle carrier assembly
1. Select the proper tools to disassemble the carrier
2. Inspect wear patterns
3. Check and set the pinion bearing pre-load
4. Set the pinion assembly depth
5. Set the carrier bearing pre-load
6. Set the backlash
7. Check the gear tooth contact pattern
8. Reassemble the inter-axle differential (power divider).
9. Demonstrate ability to set input shaft end play
Remove a forward rear axle carrier assembly
1. Select proper tools to remove the carrier assembly
2. Remove inter-axle drive shaft and through shaft
3. Remove full floating axle shafts
4. Remove carrier assembly
5. Reinstall the carrier assembly and all related parts

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