Subaru Forester Owners Forum banner
  • The "Garage" feature is for images of YOUR VEHICLE/S only - no blanks or other unrelated images please, thanks

2012 - DIY ► Clutch Service Guide - write up!

18K views 9 replies 7 participants last post by  WAwagon  
#1 ·
Even though it seems like people are doing their own work less and less lately I wanted to put this together for anyone who may need it.
Clutch service on a 2012 forester. I'm sure most of this applies to other Foresters and other Subarus but I'm not sure exactly which ones. What I am sure of is this is for the FB series Forester (2011-2012) although I doubt it would be much different for the same gen EJ series Forester (2009-2010).

This is what we are working with:
Image

First: Start off by laying out all of the parts you will need: Clutch kit which will include the clutch, pressure plate and throwout bearing. Going with Exedy here because as I understand, they manufacture the OEM parts for Subaru anyway.
New flywheel. I could not find a 100% answer on this but I think the flywheel here is dual mass which means it is super hard to resurface properly. A new one is $$ but it will come with the new pilot bearing already installed so you won't have to worry about that.
I went with new OEM flywheel bolts. They are super cheap no reason not to.
Two new axle nuts
A new clutch fork just for peace of mind, the earlier Subarus had some issues with bending over time.
Spring clips for the clutch fork: Two to hold the throwout bearing on and one on the backside
A tube of OEM Niglube for lubrication areas
A new transmission drain plug and crush washer
And as an extra: Kartboy and TurnInConcepts shifter bushings.
New manifold to exhaust gasket
New exhaust donut gasket
New spring bolt set (They will most likely snap if they've been on there for a while)
Image

Next: Disconnect your battery: Negative first, then positive. I like to crack my hatch open before doing this in case you want to get back there while working on the car.

Next: Remove your intake tube/box:
There are two 8mm hose clamps and one phillips head push pin retainer
Image

You will also need to remove the breather hose located on the driver's side of the unit:
Image

Next: disconnect the two electrical connectors on the passenger's side of the bellhousing. (These are reverse switch and neutral switch)
Image

Then you need to unbolt the bracket altogether. It is held on with the 1st bellhousing bolt. When you remove these bolts, keep them in order as they are not all the same length. Then just tuck the connectors and bracket out of the way back toward the rear of the transmission
Image

Then remove your pitch stop mount. Firewall side is just a bolt, transmission side is nut and bolt.
Image

Then remove the grounding wire that was just above the firewall bolt for the pitch stop and tuck it back out of the way.
Image

Next: unbolt the two bolts that hold your slave cylinder onto the bellhousing and tuck it out of the way.
Image

Next unbolt the ground strap from the passenger side of the bellhousing by unbolting your second bellhousing bolt. This is also one of two bolts that hold your starter on which will be removed later.
Image

Then remove the positive starter cable and tuck it out of the way:
Image

Lastly for the work done from the engine bay, remove the last upper bellhousing bolt on the passenger side:
Image

Next jack your car up. You can do the clutch job with the trans still under the car and in this case standard jack stands will work. If you plan on removing the transmission altogether you will need taller jack stands or build wooden risers for the stands. You want roughly 21-22 inches of clearance from the ground to pinch weld to just barely have room to roll the transmission out with the transmission jack I will be using
First start by removing your axle nuts. A powerful impact gun here will eliminate the need to un-stake the nut, just send it and wind it off.
Then drain your transmission fluid
Image

Then on each side of the car remove these three bolts that secure your brake lines and ABS wire. This will give you more room to move stuff around without pulling on these:
Image

Next we will be removing strut bolts. (Yes you can alternatively undo the bottom ball joint to accomplish the same this but here in upstate NY on a high mileage car you will most likely trash the ball joint if you can even get them out and IMO is a giant pain in the ass that is easy to avoid by undoing the strut)
Keep in mind that the top strut bolt is a camber adjustment bolt. Simply mark it with a paint pen so you can put it back the same way it came out. (You are probably fine afterword but bringing the car to an alignment shop after couldn't hurt)
Image

Once those bolts are out you can tilt the kuckle down and turn it to give you just enough room to pull out the end of the CV shaft. (Obviously this is to be done on both sides of the car)
Image

Next gently pry out the CV shafts. Be mindful here: You will need a good amount of force to pop it out but your transmission case is aluminum and if you go too crazy you could chip/crack it.
Image

Image

Next undo the three bolts that connect your cat-pipe to your manifold:
Image

Then remove the hanger bolt on the center of the pipe:
Image
 
#2 ·
Then undo the spring bolts on the back flange of the pipe:
Image

Image

Then get yourself one of these for the next step. It makes life so much easier:
Image

I remove the Y pipe and mufflers as one unit to save on having to buy new gaskets. Start by removing the hanger on the center of the Y pipe:
Image

Then remove the two hangers on each muffler:
Image

Image

Then remove this heat shield from the drive shaft tunnel:
Image

Image

Then remove the 4 bolts that connect the rear driveshaft to the rear diff. Trick here is to set the parking brake so it can't turn, remove two bolts, then release the parking brake and rotate the drive shaft, then put the brake back on and remove the last two. The shaft will stay in place as it indexes onto the diff flange.
Image

Then remove the two bolts that hold the center carrier bearing onto the underside of the car. You can then support the rear of the shaft with your knees and slip the front of the shaft out of the transmission and remove it altogether.
Image

Image

Next: Finish removing the starter. This will remove another bellhousing bolt as well as one wire. The wire connector simply pulls off.
Image

Image

Next remove your shifter linkages: On the bottom horizontal stud is a nut that needs to be undone. And although hard to see in this photo, there is a vertical nut and bolt that needs to be undone to disconnect the top linkage. Do your best to move these out of the way.
Image

Next you need to find a way to support the engine so it doesn't tilt forward when the trans is removed. I like this method: Use a soft wood board 3/4" thick and hammer it between the back of the oil pan and cross member:
Image

Next remove the last two bottom bellhousing bolts and the bottom two bellhousing nuts: Same on both sides.
Image

If you use this transmission jack from harbor freight you will need to trim it to fit between the subframe and transmission cradle:
Image

Get your jack in place and secure your strap. I like to fold up a few shop rags and place them between the jack plate and transmission just to try to keep it from sliding around as best I can.
Image

Once the transmission is supported, remove the front two larger transmission cradle bolts. Same on both sides.
Image
 
#3 ·
Then remove the four smaller transmission cradle bolts, two on either side. Finally remove the two nuts that secure the cradle to the transmission mount.
Image

Image

Then drop the transmission. This will be the most frustrating part of your entire life. Over time the bellhousing becomes almost fused to the block due to corrosion. You will need to lie on your back, and cannot use a creeper. Then begin to wiggle up and down and side to side ... violently ... but not too violently, you don't want to rock the car off the jack stands.
Ideally you want to only do this by wiggling. But if after a while all you can manage is a slight gap between the bellhousing and block, you can use a pry bar. But this a last resort, remember that both the bellhousing and block are aluminum and can easily be damaged.
Image

Here you can remove and replace the throw out bearing and spring clips and fork assembly. Remember to clean the area of dust and debris and lubricate the snout that the TOB slides on as well as the pivot ball that the fork pivots on.
Image

Now I apologize because at this point I was getting kinda tried of the project and just wanted to get it finished so I forgot to keep taking pictures, but its pretty straight forward.
Remove your pressure plate bolts and take off the pressure plate and clutch disk.
Then remove the flywheel bolts with an impact and remove your flywheel.
There will be some sort of harmonic plate or something behind the flywheel, reuse this.
Install the new flywheel using new bolts and red loctite and torque to spec in a star pattern

There is a trick to keep the flywheel from turning the crank when tightening. Use a wrench to make a stop between one of the flywheel dowels and the lower bellhousing stud: (Excuse my crude paint skills):
Image

Clean both the surface of the flywheel and pressure plate with brakleen.
Then align the clutch disc and pressure plate using the tool included in the kit. The kit also will have instructions on how to do this properly. Use red loctite again on the bolts and you shouldn't need a stop this time to tighten as the ft/lb is relatively low.
Last thing to remember is to mate the transmission back up as straight as possible, if you go in with too much of an angle you can knock the clutch disc out of alignment.
And then reinstall everything in reverse order of removal.
You will hear a slight swirl sound from the clutch along with a small amount of slippage feel when you let the pedal out the first few times. This is normal as the new clutch is bedding into the new flywheel.
Remember not to drive like a grandma but also not like a race car driver for a while: you want to deliberately re engage the clutch and cause as little slipping as possible until the flywheel, clutch, and pressure plates are bedded in.
 
#6 ·
Great write-up @Sleezer1533 - I will add a link in the DIY section; just one comment that the ground/earth/negative should always be removed first / replaced last to prevent any sparking. For this job probably best to remove both - & + cables
Disconnect your positive battery cable
 
#9 ·
Great write-up. I am doing mine this weekend. Is a 2007 OB.
About the engine tilting backward.. I have a ratchet strap that I got from HD. I can strap on the pitch bolt and to the engine hoist bracket hanger (check term). Lets how it goes.
 
#10 ·
Thanks for the great write up and videos! I just completed the clutch job yesterday on my 2010 Foz and used this as a guide. I know just enough about working on cars to get myself into trouble. Luckily I get myself out of it eventually! It was a great learning experience for me.

I bought a kevlar clutch kit from Phoenix Friction: here I've only driven like 50miles so far so I have no idea if the engagement will be smoother after break in as advertised.

I also highly recommend aftermarket shifter bushings! The install is extremely simple if you've already dropped the trans. It would also be pretty easy with the trans in and makes shifts feel much more precise.

My notes:
Removal of the rear exhaust pipe and mufflers is not required. One can simply pull the driveshaft out around it. Also I didn't replace any of the exhaust seals. I live in WA and the roads don't see much salt.

My shift shaft seal seemed to be leaking, but not badly. I was going to replace it, but then I reconsidered. I highly doubt it matters in the grand scheme of things and my 3rd gear syncros will probably go first.

I used the same harbor freight transmission jack and instead of cutting it I removed the cradle while the transmission was still bolted to the engine. The engine was ratchet strapped to the front of the car at the time.

To tilt the engine I used the ratchet strap method detailed above. It worked well and allowed me to adjust the angle relative to the transmission during reinstall.

DO NOT REMOVE THE CV AXLES FROM THE TRANSMISSION FIRST LIKE ME! Mine were pretty stuck in the hubs so I worked really hard to get them out on the inside, tearing the axle seals to pieces in the process. I think maybe my 1" lift had something to do with it? The passenger side eventually came out of the hub when I railed on it with a rubber mallet. As for the driver's side, the machine shop I took the flywheel to was kind enough to loan me the special tool intended to unstick rusted in axles. I bought new seals but didn't have a proper tool for installation so I just put them on the axles when I reinstalled them and so far I think that worked!

(unverified) Torque specs I used for reinstall (lb-ft):
Flywheel bolts: 53
Pressure plate: 12
Bell-housing bolts: 37
Transmission cradle: 14mm 52
17mm: 103​
Camber bolts: 129
Caliper: 60
Axle nut: 160 (wife held brakes while I jumped on the torque wrench)

I also found that Brian's mobile one videos were confidence building:
Part 1: https://youtu.be/hwy9leulOYU
Part 2: https://youtu.be/C_CSbYJU2RQ

Hope this helps somebody! These cars are so simple to work on and great to live with!
 
You have insufficient privileges to reply here.