There is a C clip that holds them on.
http://letmegooglethatforyou.com/?q=how+to+remove+wiper+arms
top of the fire wall under the hood your wiper arms will connect
To remove the wiper arms from a 1996 Concord, remove the small clip holding them on. Then pull up on the arm.
You will have to remove the wiper arms, then remove the cowl, and then the wiper motor.
How do you remove the wiper arms on 2001 Lincoln LS
how do you remove the wiper arms on a 2002 CRV?
remove wiper arms and cowl
To remove the wiper arms from a 1971 Nova, start by lifting the wiper arms away from the windshield to access the mounting nuts. Use a socket wrench to remove the nut that secures each wiper arm to the pivot shaft. Once the nuts are removed, gently lift the wiper arms straight off the shafts. If the arms are stuck, you may need to use a wiper arm puller for extra leverage.
Take off the bolts at the bottom of the wiper arms and you may have to wiggle the arms back and forth to work the wiper arms off.
To replace the wiper motor on a 1987 Dodge D100, first disconnect the negative battery cable to ensure safety. Remove the wiper arms by loosening the retaining nuts and gently pulling them off the splined shafts. Next, unscrew and detach the wiper motor from its mount, disconnect the electrical connector, and remove any necessary linkage. Install the new wiper motor by reversing the removal process, ensuring all connections are secure before reattaching the wiper arms and reconnecting the battery.
remove the cowl & wiper arms (mark location of arms on the windshield). disconnect the battery, Disconnect wire connector at wiper motor & remove the 4 mounting bolts then remove the linkage from motor.
remove the caps at the end of the wiper arms. Unscrew the nut holding down the arm and it should come off.