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Crankshaft Seal Replacement
 
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Pelican Technical Article:

Crankshaft Seal Replacement

Nick Czerula

Time:

3 hours3 hrs

Tab:

$200

Talent:

****

Tools:

21mm, 24mm socket, E10 external Torx, flathead screwdriver, MINI tool (11 9 601)

Applicable Models:

R56 MINI Cooper Hatchback (2007-13)
R56 MINI Cooper S Hatchback (2007-13)

Parts Required:

Crankshaft seal, vibration damper, drive belt, friction wheel

Hot Tip:

Work with a cool engine

Performance Gain:

Repair oil leak

Complementary Modification:

Replace drive belt or vibration damper

The engines used in MINI R56 cars are MINI New Generation engines. MINI New Generation engines are 1.6 liter, with turbocharged and normally aspirated versions. All aluminum two-piece crankcase construction keeps the weight down, while technology like adjustable camshaft angle and variable valve lift help to keep the engines efficient.

With the new engine design, new sealing technology is needed. The crankshaft seal is a good example of this. It is made of Polytetrafluoroethylene (PTFE). Low friction and minimum power consumption are the main advantages of MINI utilizing a PTFE oil seal. Other benefits include, no sealing problems with dry operation or insufficient lubrication, an operating range of -130°C to +200°C, and a low breakaway torque after standstill.

Special process and tools are needed when replacing PTFE seals. Read the article completely before beginning to be sure you have the right stuff.

The purpose of the crankshaft seal is to provide sealing between the rotating crankshaft and the outside. Classical crankshaft seals consist of a metal housing that carries a dynamic sealing lip that also provides a static sealing function. The sealing lip of oil seals is usually manufactured of elastomer material, and is in contact with the surface of the rotating shaft.

In this article, I'll go over the steps involved with replacing the crankshaft seal on MINI R56 models. Be sure to work with a cool engine.

Keep in mind that when your car was serviced before, parts may have been replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have, so be prepared with different size sockets and wrenches.

Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Do not work on your vehicle if you feel the task is beyond your ability.

Vehicle models change and evolve, as they grow older, so the vehicle shown in our illustrations may vary slightly from yours. If something seems different, let us know and share your info to help other users. Do you have questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information.

Lift and support the front of your vehicle. See our tech article on jacking up your MINI.

Remove the right front wheel well liner. See our tech article on wheel well liner replacing.

This photo shows oil residue and a fresh oil leak.
Figure 1

This photo shows oil residue and a fresh oil leak. A faulty crankshaft seal usually shows up as a leak down the right side of the engine (green arrow).

Working at the A/C line, remove the 10mm fastener (red arrow).
Figure 2

Working at the A/C line, remove the 10mm fastener (red arrow).

Using a flathead screwdriver, open the A/C line mount (red arrow).
Figure 3

Using a flathead screwdriver, open the A/C line mount (red arrow). Then remove the mount from the engine (green arrow).

Do not remove the center crankshaft bolt (green arrow).
Figure 4

Do not remove the center crankshaft bolt (green arrow). If removed, engine timing will be compromised. Working at the crankshaft vibration damper, remove the three E10 External Torx fasteners (red arrow).

Remove the vibration damper from the crankshaft.
Figure 5

Remove the vibration damper from the crankshaft.

With the damper removed, you can view the leak a little better (green arrow).
Figure 6

With the damper removed, you can view the leak a little better (green arrow). Next we will remove the seal (red arrow).

Using a punch, gently drive the seal toward the engine at the top (red arrow) so the bottom of the seal tilts outward.
Figure 7

Using a punch, gently drive the seal toward the engine at the top (red arrow) so the bottom of the seal tilts outward.

Use a pick to grab the bottom of the seal (red arrow) and pull it away from the engine.
Figure 8

Use a pick to grab the bottom of the seal (red arrow) and pull it away from the engine.

This photo shows the seal (green arrow) with the installation sleeve (how it will come when new) and MINI tool 11 9 601 (yellow arrows).
Figure 9

This photo shows the seal (green arrow) with the installation sleeve (how it will come when new) and MINI tool 11 9 601 (yellow arrows).

Install MINI tool 11 9 601 (red arrow) onto the crankshaft (green arrow) with the supplied fasteners.
Figure 10

Install MINI tool 11 9 601 (red arrow) onto the crankshaft (green arrow) with the supplied fasteners. Generously coat MINI tool 11 9 601 and the crankshaft in clean engine oil.

Then place the installation sleeve with the seal onto MINI tool 11 9 601.
Figure 11

Then place the installation sleeve with the seal onto MINI tool 11 9 601. Coat the installation sleeve with clean engine oil. Slowly and evenly press the seal onto MINI tool 11 9 601toward the crankshaft.

Remove the installation sleeve from MINI tool 11 9 601.
Figure 12

Remove the installation sleeve from MINI tool 11 9 601.

Install the seal driver portion (red arrow) of MINI tool 11 9 601 to the threaded shaft.
Figure 13

Install the seal driver portion (red arrow) of MINI tool 11 9 601 to the threaded shaft. Using a wrench, slowly tighten the nut until the tool bottoms out (green arrow).

Remove MINI tool 11 9 601 (green arrow) from the engine.
Figure 14

Remove MINI tool 11 9 601 (green arrow) from the engine. Inspect the seal (red arrow) and be sure the lip is not rolled or crooked. Once complete, reassemble the items and check the engine for leaks. Tighten the crankshaft pulley to 28Nm.

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Comments and Suggestions:
E81 Comments: Sorry for typo - "crankshaft"!
October 9, 2016
  Followup from the Pelican Staff: Give The Pelican Parts parts specialists a call at 1-888-280-7799. They can get you the tool.
- Nick at Pelican Parts
 
E81 Comments: Hi Guys,
I need help! Where can I buy crankshift seal installer kit 11 9 601, 11 9 602, 11 9 603?
October 9, 2016
  Followup from the Pelican Staff: Give The Pelican Parts parts specialists a call at 1-888-280-7799. They can get you the tool - Nick at Pelican Parts  
Peter Comments: Hi Guys,

I need help, I've tried to get this tool from the dealer and from Pelican and no one seems to have it.
Thanks

Peter
July 25, 2016
  Followup from the Pelican Staff: Give Baum tools a call. - Nick at Pelican Parts  
Michael2007Mini Comments: How can the new seal be installed if you have removed the crankshaft bolt while replacing the timing chain? I've removed the crank pulley completely from the engine.
March 19, 2016
  Followup from the Pelican Staff: The special tool bolts to the crankshaft. See the steps in the article. - Nick at Pelican Parts  
Brian Comments: Hi,

How much is the tool for installing the crankshaft seal?
I just found out that was where the leak was from on my engine after the dealer told me the casm cover gasket, oil pan gasket and the VANOS solenoid O-ring were leaking. I changed all of those things and the timing chain tensioner while I was in there. I had the well liner out. That's how I saw where the leak was from. Do you sell the fasteners for that? The plastic ones.
October 12, 2015
  Followup from the Pelican Staff: We can get you what you need. I recall the tool being a little $100.00

I’m not the best with part numbers.

Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need. - Nick at Pelican Parts
 
Lincoln Comments: Where can I get this tool? Will a standard seal driver tool work in its stead?
June 1, 2015
  Followup from the Pelican Staff: No, you need the special tool. Give our parts specialists a call at 1-888-280-7799. They can get it for you.
- Nick at Pelican Parts
 
Brandomos Comments: can this job be performed without the installation tool?
May 3, 2015
  Followup from the Pelican Staff: No, I would not recommend it. - Nick at Pelican Parts  

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