Using the incorrect type of transmission fluid may affect the sealing ability of the seals. Ensure the use of the correct type of transmission fluid. The incorrect type of sealer may not be compatible with the transmission fluid or may not have the correct characteristics for sealing the affected components. Ensure the use of the correct type of sealers. Refer to Adhesives, Fluids, Lubricants, and Sealers.
The number below refers to the step number on the diagnostic table.
Step | Action | Yes | No | ||||||||||||||
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DEFINITION: Visible sign of the transmission fluid leaking from the transmission. | |||||||||||||||||
1 | Did you review the Symptoms - Manual Transmission and perform the necessary inspections? | Go to Step 2 | |||||||||||||||
2 |
Was the transmission fluid level too high? | Go to Step 19 | Go to Step 3 | ||||||||||||||
3 | Inspect the transmission vent for a blockage. Is the transmission vent blocked? | Go to Step 4 | Go to Step 5 | ||||||||||||||
4 | Repair or replace the transmission vent. Refer to Transmission Vent Tube Replacement. Did you find and repair the condition? | Go to Step 19 | Go to Step 5 | ||||||||||||||
Verify the location of the leak.
Is the leak occurring at the drain or fill plug? | Go to Step 6 | Go to Step 7 | |||||||||||||||
6 | Replace the drain or fill plug. Refer to Transmission Fluid Replacement. Did you find and repair the condition? | Go to Step 19 | Go to Diagnostic Aids | ||||||||||||||
7 | Is the leak at the transmission output shaft seal? | Go to Step 8 | Go to Step 9 | ||||||||||||||
8 | Remove the output shaft seal and inspect for the following. Refer to Extension Disassemble and Extension Assemble.
Did you find and repair the condition? | Go to Step 19 | Go to Diagnostic Aids | ||||||||||||||
9 | Is the leak at the front of the transmission? | Go to Step 10 | Go to Step 12 | ||||||||||||||
10 |
Did you find and repair the condition? | Go to Step 19 | Go to Step 11 | ||||||||||||||
11 |
Did you find and repair the condition? | Go to Step 19 | Go to Diagnostic Aids | ||||||||||||||
12 | Is the leak at the backup light switch? | Go to Step 13 | Go to Step 15 | ||||||||||||||
13 |
Did you find and repair the condition? | Go to Step 19 | Go to Step 1 | ||||||||||||||
14 |
Did you find and repair the condition? | Go to Step 19 | Go to Step 1 | ||||||||||||||
15 | Is the leak at the sealing flanges of the transmission case? | Go to Step 16 | Go to Step 17 | ||||||||||||||
16 |
Did you find and repair the condition? | Go to Step 19 | Go to Step 17 | ||||||||||||||
17 | Is the leak coming from a crack or porosity in the transmission case ? | Go to Step 18 | Go to Diagnostic Aids | ||||||||||||||
18 |
Did you find and repair the condition? | Go to Step 19 | Go to Diagnostic Aids | ||||||||||||||
19 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 1 |