I need to get instructions on how to remove and reinstall a heater core in a 1999 lincoln Town car. Thanks Mike

Hate to tell you this, but you will need to remove the entire dashboard to access the heater core.

Beings as a heater core is basically like a small radiator, there is no "fix" other than replacing it.

Buy removal tool. U shaped pins.

For heater core replacing procedure.I suggest you to go through this related help links.Its all complete step by step procedure :----How to replace heater core for All car models?

Click the link below:---

http://technoanswers.blogspot.com/2011/11/how-to-replace-heater-core-for-all-car.html

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How to Flush Heater Core?

http://schematicsdiagram.blogspot.com/2011/12/how-to-flush-heater-core.html

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How to Remove Heater Core ?

http://howtobyme.blogspot.com/2011/12/how-to-remove-heater-core-on-2008-honda.html
Heater Core Replacement?

http://howtobyme.blogspot.com/2011/12/honda-heater-core-replacement.html

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To replace heater core?http://technoanswers.blogspot.in/2012/02/how-to-replace-heater-core-on.html------How to replace heater core?http://technoanswers.blogspot.in/2012/02/how-to-replace-heater-core-on_10.html
----------This will help.Thanks.

behind glove box!
Inspect/Replace If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing

• The heater housing is usually under the dash and must be removed to gain access to the heater core.
• Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.

The heater housing is disassembled to get to the heater core.
Heater Core

• Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
• Remove the heater coolant hoses.
• Remove the cable and/or vacuum control lines (if equipped).
• Remove the heater core securing brackets and/or clamps.
• Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
• To reinstall the heater core, reverse the removal steps.

When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

It would be best to obtain a haynes manual about $15 from local auto supply store as it has pictures as well as instructions. Not an easy job.

This is a huge job. The heater core is behind the glove box behind the dash. The dash has to be taken loose and pulled away to access the heater core. You might consider paying to have this job done. I personally would rather change the engine or the trans than do the heater core.

Haynes manual # 59010. you will have to remove the dashboard to get to the heater core.

That is about a 9 hour job. The heater core in in the Heater Air plenum chamber which is behind the dash. the dash has to be removed to replace the heater core. It is an involved job. Lots of bolts, screws wireing connectord and vacume connectors to remove and un plug. Some are behind the inner fender splash guard. The book wants you to remove the complete Heater Air Plenum, But it can be done with Patience and finess.