Heater Core Removal C230 Help??

[jetonetv]

I have had a repair shop have my C230 for while since last year (2012) it has been there since...

He was going to install all the parts..

1. Universal Air Conditioner CO105111C A/C Compressor.
2. A/C RECEIVER DRIER BEHR HELLA - 2028300283
3. Starter *NEW* - Brand: Bosch - Part #: SR0456X
4. Fuel Pressure Regulator - Brand: Bosch - Part #: 0280160587
5. Crankshaft Position Sensor - Brand:Meyle - Part #:0148990042
6. Heater Core

He finished everything but the last one is what is taking so long, the heater core..

After seeing the over and over after days passing its really starting to bug me with this mechanic..

Hopefully you guys could let me know what to do he has the car apart and I do not want him to do anything funny if I say never mind.

http://myc230benz.shutterfly.com/pictures/51

The link is pictures of the car that is currently sitting at the repair shop.

He tells me that he does not know how to remove the heater core...

(P.S I was sent to this website from another Benz website.

Thank You For Any Help)