|
Standard |
Posted: 06/16/08
LER 105 - Transmission/Transaxle
Repair
Course
Description
This course introduces
the basics of Lawn Equipment clutch, transmission/transaxle, and hydrostatic
transmission operation, diagnosis and repair. .
|
Competency Areas |
Hours |
|
|
Safety |
Class |
2 |
|
Clutch and Shifting Diagnosis and
Repair |
D.
Lab |
6 |
|
Transmission/Transaxle Diagnosis and
Repair |
P.
Lab/O.B.I. |
0 |
|
Hydrostatic
Transmission Principles of Operation |
Credit |
5 |
|
Prerequisite: |
|
|
Corequisite: |
|
Course
Guide |
|
Competency |
After completing
this section, the student will: |
Hours |
||
|
Class |
D.Lab
|
P.Lab/O.B.I. |
||
|
Safety |
1 |
1
|
0 |
|
|
|
Demonstrate knowledge of safe work and shop practices. |
|
|
|
|
|
|
|
|
|
|
Clutch and Shifting Diagnosis
and Repair |
2 |
4
|
0 |
|
|
|
Diagnose noise, hard shifting, jumping out of gear, and fluid
leakage concerns; and determine what action should be taken. |
|
|
|
|
|
Inspect, adjust, and reinstall shift linkages, brackets,
bushings, cables, pivots, and levers. |
|
|
|
|
|
Inspect, adjust and reinstall shift forks and levers. |
|
|
|
|
|
Reinstall shift cover |
|
|
|
|
Transmission/Transaxle
Diagnosis and Repair |
11 |
45
|
0 |
|
|
|
Demonstrate
knowledge of basic transmission theory to include gearbox cooling and gear
ratios. |
|
|
|
|
Inspect
transmission/transaxle case and extension housing |
|
|
|
|
|
Remove
and replace transmissions/transaxles |
|
|
|
|
|
Disassemble
transmissions/transaxles |
|
|
|
|
|
Inspect
transmission/transaxle case and extension housing |
|
|
|
|
|
Inspect
and replace gaskets, seals, and sealants |
|
|
|
|
|
Reassemble
transmissions/transaxles |
|
|
|
|
|
Remove,
inspect, and replace final drive |
|
|
|
|
|
Measure
endplay and/or preload on transmission/transaxle shafts. Use shim or spacer
selection procedure to make necessary adjustments. |
|
|
|
|
|
Diagnose
transaxle final drive assembly noise and vibration concerns and determine what
action should be taken. |
|
|
|
|
|
Remove,
inspect, measure, adjust and reinstall transaxle final drive pinion gears
(spiders), shaft, side gears, side bearings, thrust washers, and case
assembly. |
|
|
|
|
|
Hydrostatic
Transmissions
Principles of Operation |
6 |
10
|
0 |
|
|
Demonstrate
knowledge of the theory and operation of hydrostatic transaxles. |
|
|
|
|
|
Disassemble,
inspect, and reassemble a driven pump following manufacturer’s procedures and
specifications. |
|
|
|
|
|
Suggested
Resources |
Tecumseh Technician’s
Handbook Transmission and Drive Products (Tecumseh and Peerless) 740045
Posted:
06/16/08