How do you change a 1982 dodge d150 wiper motor?

Answer 1

LMAO, you have one too? Are you certain the motor is bad? The linkage can come apart because of perished bushings. If the bushing fails, the motor will turn, but the wipers won't move. Check this before you buy a new motor that you can't return.

To remove the motor, disconnect the power lead. Remove the three wiper motor mounting bolts. A gearwrench is the best tool to reach this tight spot. You may be able to pull the motor back enough to unfasten the crank. The crank is held by one nut. If you can't pull the motor back far enough and reach this nut, you will have to remove the upper cowl to reach the nut. To remove the cowl, remove the wiper arms. There's a retainer catch on the back side of the wiper arm that needs to be released as you pull up. You may need to use some PB blaster to free corrosion to get these loose. With the wiper arms off, remove the eight or so sheet metal screws. With the cowl removed you can reach the nut holding the crank. This is a good time to replace all of the wiper bushings, Doorman p/n 49440. These are plastic and on a 1982 they will be dry-rotted. These bushings will fail when it's raining and you're a long way from home, so replace them while you're replacing the motor. On mine, all four crumbled and fell apart.

To remove them pry the joint apart. Remove the wiper linkage assembly and pivot posts as a unit. Make notes which side of each linkage arm receives the bushing. Each wiper pivot post has three mounting bolts. With the linkage out on the work bench, install bushings into the linkage arms using a socket for backup. Hammer them in until they latch into place. Once the bushings are installed in their holes, hammer the pivots into the bushing. These will also latch. Use a little bit of grease to ease the assembly. With all new bushings installed in the wiper linkage assembly, install the linkage assembly (all three links and the two posts) through the access holes starting on the passenger side. Slide it through into position and replace the three bolts at each wiper post. Fasten the linkage to the crank arm. Replace the cowl and install the wiper arms.