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Input Shaft Seal Replacement
 
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Pelican Technical Article:

Input Shaft Seal Replacement

Jared Fenton

Time:

8 hours8 hrs

Tab:

$10

Talent:

*****

Tools:

Dental pick, screwdriver, steel pipe, mallet

Applicable Models:

Volvo C30 T5 (2008-13)
Volvo C30 T5 R-Design (2008-13)

Parts Required:

Input shaft seal

Hot Tip:

Use a steel pipe to install the seal

Performance Gain:

No more transmission leaks

Complementary Modification:

Replace clutch

The transmission input shaft seal is an item that should be replaced whenever you replace the clutch. It is one of those while you're in there items that can sometimes come back to bite you if you DON'T replace it. The seal keeps transmission fluid from leaking past the input shaft. If it does start leaking, you run the risk of soaking the clutch disc with fluid. This can over time render your clutch useless.

Replacing the seal requires you to remove the transmission and slave cylinder from the car. See our articles on Clutch Master and Slave Cylinder Replacement and Transmission Removal for more information.

The input shaft seal sits directly behind the slave cylinder inside the transmission bellhousing (green arrow).
Figure 1

The input shaft seal sits directly behind the slave cylinder inside the transmission bellhousing (green arrow).

A dental pick is very useful for clawing under the seal lip.
Figure 2

A dental pick is very useful for clawing under the seal lip. This helps you to get a screwdriver underneath.

Use the screwdriver to carefully pry the seal out.
Figure 3

Use the screwdriver to carefully pry the seal out. At a certain point, the remainder of the seal should just pop out. Be careful not to gouge the inside bore where the seal sits.

Inspect and clean the inside bore (green arrow).
Figure 4

Inspect and clean the inside bore (green arrow).

Place the new seal inside the bore.
Figure 5

Place the new seal inside the bore. You'll want to drive the new seal in evenly. This prevents the seal from cocking itself in the bore. I found a piece of steel pipe (green arrow) roughly the same diameter as the seal. Use a rubber mallet to drive the seal all the way in.


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