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Transmission Removal

47K views 18 replies 11 participants last post by  cmill1154  
#1 · (Edited)
I just removed my transmission to replace a slave cylinder and someone was interested how I did it. I am just documenting here how I did it. I am trying to be as safe as possible but you would do it at your own risks.
1- Loosen the front wheel bolts, while the car is on the floor, Don't remove them obviously.
2- remove the drive axle bolts behind the center wheel cap, both front wheels.
3- lift the car on jack stands.
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You need to place the stands behind the plate that supports the subframe as the subframe will need to be removed. You will need to raise it high enough to get the transmission to roll out. Mine was raised 46 cm from the floor to bottom of the car. It is better to raise all 4 wheels about the same height to keep the car level.
4- remove both front wheels
5- drain the transmission by removing the 24mm plug at the bottom of the transmission. You will need 2 liters manual transmission oil to refill it. Volvo oil #: 31280771.
6- remove brake pads and then brake calipers and suspend them with some wires to the coil springs. Label the brake pads to put them back in their original position.
To keep track of all bolts and small parts, I put them in zip bags along with a piece of papers explaining where it is coming from and a number to remember in which order I took them out. I must have been using about 40 bags so far.
7- remove the ball joint nut on both sides
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you will need a counter hold.
8- disengage the control arm from the ball joint.
I use a chain, steel bar and a block of wood for this.
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9- remove passenger side axle. First tap the axle to push it in by about 2cm. Then by pulling gently the axle you should be able to disengage it from the spline. You will also need to remove the half shell holding the mid bearing.
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Then pull gently the axle out.
10- remove driver side axle. Could be difficult, but I explained how I did mine in this thread:
http://forums.swedespeed.com/showpost.php?p=2434768
11- disconnect the propeller shaft from angle gear.
Mark how they are connected to put them back in the same position later.
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I used this as a counter hold:
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12- remove the angle gear. The top bolt is not visible but can be removed with a 10 inch wobble extension over the angle gear. The next one down requires an offset wrench:
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13- remove the collar sleeve. Mine is now welded to the shaft of the angle gear. If it has never been removed before, it is probably glued to the transmission shaft and will be very difficult to remove. I had to use a 12 ton hydraulic gear puller for mine, but others had some success with simpler setup.
14- on the top of the engine, remove the bar supporting the top engine mount.
15- remove air filter box and intake to it.
16- disconnect MAF and vacuum lines and remove the intake between the turbo and the MAF
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17- remove the heat shield over the exhaust manifold.
18- disconnect the down pipe from the turbo and remove it. Before removing it, support the cat back with some boxes on the floor.
19- remove the over the engine pipe from the turbo..
20- drain the cooling system. I am not sure it is absolutely necessary, but I did it as several coolant lines are removed.
One might also drain the engine oil if the turbo is to be removed,
21- remove the turbo. I am not sure it is absolutely necessary but it does give more room to work around there. To remove the turbo:
a- from the top, remove the screws holding the coolant line and the banjo bolt for the oil line.
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a- from the bottom, remove the bracket holding both coolant lines to and from the turbo together, the two screws for the lower coolant line, and the banjo bolt for the oil supply.
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c- from the bottom also, remove a third banjo bolt on the other end of hard oil line, above the bracket holding the bearing for the passenger drive axle. I had to remove this bracket to see this third banjo bolt.
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d- remove the oil line that was held by the third banjo bolt.
e- remove the bolts and nuts holding the turbo to the exhaust manifold
f- remove the turbo from below
For refitting you will need two new gaskets for the coolant lines, 6 new copper crush washers of various sizes for the banjo bolts and one gasket between the turbo and the manifold.
22- remove the shift cables from the top of the transmission.
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a- pry the round one on the left with two flat wrenches
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b- for the square one on the right pull the pin (not all the way) and pull up the cable.
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c- disconnect the connector for the reverse sensor
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d- remove the rest of the cables by pushing toward the back the white ring for the left and black ring for the right, and then pulling up the cable out. If you can't push the ring by hand, try prying the ring back with a screw driver. Don't try to pry up the cable before pushing the ring back. I made that mistake.
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23- remove the bolt at the top of the rear engine mount, in the back of the engine. If you have not removed the turbo, it would probably be more difficult to see.
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I had also disconnected the coolant pipes to the heater core, but I don't think you really need to if you only remove the transmission.
24- clamp the hydraulic clutch line with a hose clamp.
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25- disconnect the hydraulic clutch line from the front of the transmission.
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There is a small pin you need to pull with a small screw driver before pulling the line up.
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Put some plastic film with a rubber band on the input to prevent any dirt from getting in.
26- remove the 3 clamps holding the electric wires to air box brackets
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27- remove the left air box bracket by removing the two nuts at the bottom
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28- remove the right air box bracket by removing the two bolts in the front and then remove the third bolt in the back to remove the aluminum bracket as well. This will get in the way when removing transmission.
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29- remove the grounding cable from the engine
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and the subframe.
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To be continued
 
#2 ·
You did a good job documenting this. Instead of using an offset wrench in step 12, I used a S-shaped box end wrench. They are available on E-bay and through other sources for about $15.

I did not remove the down pipe, turbo or heat shields. I did remove the pipe from the hangers so the whole exhaust could be lowered when the engine is tilted.
 
#3 · (Edited)
30- remove the two bolts attaching the wire harness to the subframe
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31- remove the starter
a- remove the two bolts that were also used for the left air box bracket.
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b- disconnect the electric cable in the back
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c- push the starter out by tapping a small rod through the third hole
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I read that there should be a bracket in the back of the starter to attach it to the engine. There was no such bracket in my case.
32- support the engine from above. I built my own support from some steel beams bought at the local hardware store and wood pieces cut to fit.
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33- remove the bracket behind the transmission and above the rear engine mount
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34- remove from the top, the bracket at the back of the transmission, holding the connectors for the O2 sensors.
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I attempted to remove this before the bracket in step 32 but I had my ratcheting wrench stuck.
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35- remove the bolt at the bottom of the rear engine mount. You can barely see it from below between the sway bar and the subframe.
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It seems impossible to remove without removing the sway bar first. If you have skinnier extension like the 18 inch one I am using here, you can squeeze it here before attaching the socket, and manage to attach the socket behind sway bar with the tip of your fingers.
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It worked even with my oversized sway bar.
36- remove the rear engine mount and its cover
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37- remove the lower transmission mount
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38- remove the bolt from below the subframe for the front engine mount
39- remove the bolt from above of the same front engine mount.
40- remove the two upper bolts for the passenger side lower engine mount
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This picture shows one bolt already removed.
41- unclip the power steering lines on the passenger side of the subframe.
42- disconnect behind the swaybar, on the passenger side. The fuel return line that pass between the sway bar and the subframe, pull it out and unclip it from the subframe
43- disconnect the end links from the sway bar
44- remove the 4 nuts and one bolt attaching the steering rack to the subframe
45- disconnect the tie rod end from the wheel hub
46- support the steering rack by the tie rods with some straps attached to the coil springs.
47- support the subframe on both side
48- remove the 4 smaller bolts that attach the bracket supporting the subframe on the rear to the car body (2 on each side)
49- remove partially (6 turns) the 4 main bolts attaching the subframe and lower a bit the subframe.
50- remove the bracket that was holding the downpipe from the subframe. A third bolt is on top of the subframe, which is why you have to lower the subframe a bit before you can remove it.
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This is to clear the brake line when lowering the subframe.
51- make sure nothing is attached to the subframe, remove the 4 main bolts, and remove the subframe.
52- lower the engine and transmission with the supporting device you used to support the engine from above. I lowered it by about 8cm but a little bit more would have made things easier.
523- place a transmission jack under the transmission and secure the transmission to it
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Do not place the jack too close from the engine as the center of gravity of the transmission seems to be closer to the opposite end. The transmission jack should be centered below the center of gravity of the transmission. I used some wood shims to stabilize the transmission on the jack.
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54- remove all the bolts attaching the transmission to the engine
55- separate the transmission from the engine enough to clear the drive shaft completely. I had to remove the plastic bracket attaching the hydraulic clutch line to the frame to prevent damaging it while separating the transmission.
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Only partially visible here.
56- lower the transmission jack a roll it out of the way
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#4 ·
Excellent write up and thanks. How many miles it before the replacement? How was it driven? I am trying to get an idea about mine. Thanks.
 
#6 ·
Thanks for the write up! Will be starting this in a few days.
 
#7 ·
How long did it take you? First time pulling a tranny? It doesn't seem like the process is all too difficult removing the beast, as long as parts separate easily (which probably won't be the case). How about reinstalling the tranny? Will you be doing a write up on that?
 
#8 ·
I am not sure how long it took me. I did it over several days but taking my time. It is the first time I take out a transmission but I had already taken out the angle gear before and replaced the sway bars as well. Removing the driver side axle can be tricky but doable with some patience, as described in the referenced link. As for the collar sleeve, it is likely to be hard to remove, but you don't actually need to remove it if you just want to get the transmission out. It would be also easier to remove it once the transmission is out.
I am planning to take pictures when I reinstall it so I can do a write up.
But before that I will do an engine replacement and could do a write up as well if there is some interest.
 
#10 ·
Got mine all ready to drop the subframe. But have a few questions. The only thing left I see that could be a problem is a hose in between the sway bar and the subframe. There's no way to get it out unless I remove the sway after dropping the subframe. I was told just to cut it and reattach it with a small piece of hose. Is this the best way to do it?
Also I was told there is a screw/ bolt inside under the steering wheel that I must remove. Is thus necessary even though the steering rack will be staying under the car?
 
#11 ·
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#13 ·
I don't see the connection. It runs up into the engine and way down the car next to the fuel lines. Someone said it was an evap hose.
 
#14 · (Edited)
In my car I had this evap line, which looks like a hard plastic line. Just behind the sway bar, it enters a small rubber hose, maybe 2 or 3 inch long and then the same plastic line toward the fuel tank. That rubber hose is what I called the connector. Maybe the Volvo place I used to have my car serviced at, added this small rubber hose at some point.
 
#18 ·
Great write up! The only place it lacks is where every writeup on trans removal seems to fall short- it would be helpful to have a photo of the transmission showing all of the trans bolt locations so we can count and compare- I am in the middle of a trans job and am trying to figure out if the driveshaft is holding this together or if I missed a trans bolt... thanks though- this must have taken hours to type after doing the actual job itself!