vauxhall combo 1.3 2007
Discussion
Basically, the same as a Corsa....I've borrowed this walkthrough 
1 -> Get the car on ramps or axle stands. Do not be tempted to rely on a jack.
2 -> Disconnect the battery and leave bonnet open as access to the top mounting bolt of the alternator is easier from the top.
3 -> Remove the big, black splashguard behind the offside wheel. It is held on by three torx screws, two at the bottom and one at the top, plus on "press stud plug". This makes access to the whole alternator area easier.
4 -> Remove the two electrical connections from the alternator by removing the nuts and removing the wires...it is obvious which one goes where as one fitting is considerably bigger than the other.
5 -> Now to get the drive belt off the alternator. Locate the spring tensioner and pop a 14mm spanner onto the bolt in the tensioner pulley wheel. Rotate clockwise to compress the spring and release the tension in the belt. On mine this took a bit of welly but it does move with a bit of "oomph" behind it. I didn't lock the tensioner in position, I simply removed the drive belt from the alternator pully while holding the tensioner in its compressed state and thus the belt was slack. Gently allow the spanner to release the tensioner back to its normal position.
I had to use a ring spanner because there was not enough clearance betwween the head of the bolt and the engine mounting assembly to get a socket on to the bolt head.
6 -> The alternator is held in place by two long bolts, one at the top of the housing and one at the bottom. I found that the lower bolt head is obscured by the spring section of the belt tensioner assembly. You don't have to remove the tensioner assembly completely.
7 -> Remove the bolt at the spring end of the tensioning assembly. This will allow you to gently move the spring section out of the way downwards to get access to the lower mounting bolt for the alternator. It only needs moving a little bit. Loosen the lower alternator mounting bolt.
8 -> From under the bonnet, loosen and remove the upper alternator mounting bolt and then go back and remove the lower mounting bolt.
9 -> The electrical connectors may be held to the alternator housing by way of a cable tie. This can be cut off if need be but I was able to withdraw the wires through the tie because it wasn't very tight around the cables.
10 -> The alternator is now free to be removed. I had to use a piece of wood and a hammer just to get the alternator dislodged but it just took a couple of taps. When once it is moving you can just manipulate it by hand and it can be withdrawn from the underside of the engine compartment with a bit of wiggling around the drive shaft.
1 -> Get the car on ramps or axle stands. Do not be tempted to rely on a jack.
2 -> Disconnect the battery and leave bonnet open as access to the top mounting bolt of the alternator is easier from the top.
3 -> Remove the big, black splashguard behind the offside wheel. It is held on by three torx screws, two at the bottom and one at the top, plus on "press stud plug". This makes access to the whole alternator area easier.
4 -> Remove the two electrical connections from the alternator by removing the nuts and removing the wires...it is obvious which one goes where as one fitting is considerably bigger than the other.
5 -> Now to get the drive belt off the alternator. Locate the spring tensioner and pop a 14mm spanner onto the bolt in the tensioner pulley wheel. Rotate clockwise to compress the spring and release the tension in the belt. On mine this took a bit of welly but it does move with a bit of "oomph" behind it. I didn't lock the tensioner in position, I simply removed the drive belt from the alternator pully while holding the tensioner in its compressed state and thus the belt was slack. Gently allow the spanner to release the tensioner back to its normal position.
I had to use a ring spanner because there was not enough clearance betwween the head of the bolt and the engine mounting assembly to get a socket on to the bolt head.
6 -> The alternator is held in place by two long bolts, one at the top of the housing and one at the bottom. I found that the lower bolt head is obscured by the spring section of the belt tensioner assembly. You don't have to remove the tensioner assembly completely.
7 -> Remove the bolt at the spring end of the tensioning assembly. This will allow you to gently move the spring section out of the way downwards to get access to the lower mounting bolt for the alternator. It only needs moving a little bit. Loosen the lower alternator mounting bolt.
8 -> From under the bonnet, loosen and remove the upper alternator mounting bolt and then go back and remove the lower mounting bolt.
9 -> The electrical connectors may be held to the alternator housing by way of a cable tie. This can be cut off if need be but I was able to withdraw the wires through the tie because it wasn't very tight around the cables.
10 -> The alternator is now free to be removed. I had to use a piece of wood and a hammer just to get the alternator dislodged but it just took a couple of taps. When once it is moving you can just manipulate it by hand and it can be withdrawn from the underside of the engine compartment with a bit of wiggling around the drive shaft.
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