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BMW E39 Wiper Component Replacement
 
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Pelican Technical Article:

BMW E39 Wiper Component Replacement

Kerry Jonsson

Time:

4 hours4 hrs

Tab:

$250

Talent:

*****

Tools:

Phillips & small flat head screwdriver, 13mm, 16mm socket,T27 Torx socket, 13mm wrench

Applicable Models:

BMW E39 5-Series (1997-03)

Parts Required:

Wiper motor, wiper motor assembly, wiper blades, wiper cowl trim.

Hot Tip:

It is very important to put the covers back properly to prevent water intrusion inside the car.

Performance Gain:

Proper functioning wiper blades and wiper motor

Complementary Modification:

Replace wiper air foil and locking mechanism

Your windshield wipers should be replaced if you see streaks on the windshield as it rains. Of course the wiper motor and the wiper transmission must function properly for the entire swept portion of the windshield to be wiped of water. If the either the wiper motor of the transmission fails then you must replace them. In many states the wipers must function in order for a car to pass an annual or bi-annual safety inspection program. In this tech article we are going to go over all of the steps necessary to replace the wiper blades, the wiper motor and the transmission.

Wiper blade replacing:

If you are a second owner of the car then keep in mind someone may have already have changed the blades and new, different fittings may hold on the wiper blade. We are covering an example that is on our car.

This photo illustrates the left side wiper blade.
Figure 1

This photo illustrates the left side wiper blade. Using a flat head screw driver and put it in the slot of the locking tab and push in the opposite direction of the lock position.

Get a good grip of the wiper blade (you donÂ't want it to slip out of your hands and slam into the windshield possibly putting a crack in the glass) and pull it up off the windshield as far as it will go (only a few inches).
Figure 2

Get a good grip of the wiper blade (you don't want it to slip out of your hands and slam into the windshield possibly putting a crack in the glass) and pull it up off the windshield as far as it will go (only a few inches). It is spring loaded and should stay in the up position. You may want to put a cushion down under the arm you are working on to protect the windshield.

Separate the blade (green arrow) from the wiper arm (yellow arrow) and continue to hold on to the wiper arm.
Figure 3

Separate the blade (green arrow) from the wiper arm (yellow arrow) and continue to hold on to the wiper arm.

Lay the wiper arm gently down on the windshield too prevent it from snapping back and hitting the windshield while you get the new blade ready.
Figure 4

Lay the wiper arm gently down on the windshield too prevent it from snapping back and hitting the windshield while you get the new blade ready. Installation is the reverse of the removal steps. 

Wiper Motor Removal: In order to remove the wiper motor you are going to need to remove the cabin filters and their housings. Refer the tech article on removing the cabin filters and removing engine covers.
This photo illustrates the base of the windshield by the right wiper arm.
Figure 5

This photo illustrates the base of the windshield by the right wiper arm. Remove the two 13mm fasteners (green arrows) that secure the right side wiper arms to the shaft they mount to. Here we already have a socket and ratchet placed over one of them.

This photo illustrates the left side wiper arm.
Figure 6

This photo illustrates the left side wiper arm. Put your hands around the left side wiper cover and spread apart the plastic in the directions of the blue arrows to lift the cover off of the wiper arm.

Remove the 16mm fastener (green arrow) that mounts the left side wiper arm to the shaft.
Figure 7

Remove the 16mm fastener (green arrow) that mounts the left side wiper arm to the shaft.

Pull up on the left side wiper arm and work back and forth until the arm come loose.
Figure 8

Pull up on the left side wiper arm and work back and forth until the arm come loose. Be careful not to lose the slotted washer that fits into the wiper arm. Photo shows wiper arm removed.

These arms may be very difficult to get off due to corrosion.
Figure 9

These arms may be very difficult to get off due to corrosion. You can use a small puller (a battery terminal puller is very similar to the tool you need. Place the jaws around the base of the wiper arm (green arrows) and twist the lever onto the center wiper shaft (yellow arrow). Theses may be tight so don't be surprised if it pops off and the tool goes flying. Have a cushion at the base of the windshield so nothing hits the glass while you take these arms off.

Remove the eight plastic Phillips head screw fasteners (green arrows) that secure the plastic cover at the base of the windshield.
Figure 10

Remove the eight plastic Phillips head screw fasteners (green arrows) that secure the plastic cover at the base of the windshield.

This photo illustrates the base of the windshield, towards the middle of the car.
Figure 11

This photo illustrates the base of the windshield looking at one plastic insert. These are the same fasteners from Picture 10. If they do not come out with the screw driver then you can lever up on them with a door panel rivet removal tool. Be careful not to lever too hard, the windshield is under the plastic cover. It should not take much force to get these plastic inserts out.

Use a door panel removal tool to remove the eight plastic inserts that secure the Phillips head fasteners fit into.
Figure 12

Use a door panel removal tool to remove the eight plastic inserts that secure the Phillips head fasteners fit into. Here I am only showing one plastic insert as an example on right side of the car. These are the same fasteners from Picture 10.

This photo illustrates the base of the windshield, towards the middle of the car.
Figure 13

This photo illustrates the base of the windshield, towards the middle of the car. Use a small flat head screw driver to lever up on the three clips (green arrows) that hold the base windshield cover to the plastic fire wall cover.

With your hand pull off the wiper arm washer seals.
Figure 14

With your hand pull off the wiper arm washer seals. Pictured here are the two for the right side wiper arm (green arrows). There is one more mounted over the left side wiper arm shaft (not in this picture).

Before we can remove the wiper arm seal you must remove the pitch adjustment washer.
Figure 15

Before we can remove the wiper arm seal you must remove the pitch adjustment washer. If it is on tight or corroded on you can use a tie rod end puller to remove the adjustment washer. Put the jaws of the puller under the adjustment washer and the center pin on the wiper arm shaft and twist the pin until the washer pops off. The pin on my tool isn't centered because when I snapped the photo the adjustment washer had just popped off.

The left and right ends of the base windshield cover have rubber seals covering them.
Figure 16

The left and right ends of the base windshield cover have rubber seals covering them. You don't want to remove these seals on each side as they are difficult to install with the hood on. You can flex the cover out from under the left and right outer seals and remove the cover. Remember to slide each side of the cover under the two outer seals to prevent water leaks inside the car.

This photo illustrates the firewall in between the air intake ducts.
Figure 17

This photo illustrates the firewall in between the air intake ducts. There are four twist fasteners (green arrows) that hold in the plastic center firewall cover. The two in the middle are not visible in the picture because they are mounted underneath the overhang. Use the green arrows as a guide to where to find them. Twist these pins 90 degrees counter clockwise and pull them all the way out.

Pull up on the plastic firewall cover in the direction of the blue arrows to unseat it.
Figure 18

Pull up on the plastic firewall cover in the direction of the blue arrows to unseat it. Then pull the engine wiring harness up and pull the firewall cover out of your way.

Remove the four T27 Torx fasteners (green arrows) that mount the wiper transmission to the body of the car.
Figure 19

Remove the four T27 Torx fasteners (green arrows) that mount the wiper transmission to the body of the car.

Remove the 10mm fastener (green arrow) that secures the left side lower cover,
Figure 20

Remove the 10mm fastener (green arrow) that secures the left side lower cover, below the wiper transmission. This will give more room to remove the wiper transmission.

Pull up on the cable over the lower cover and hold it out of the way.
Figure 21

Pull up on the cable over the lower cover and hold it out of the way.

Pull the lower cover out by maneuvering it in between the wiper transmission and the brake booster
Figure 22

Pull the lower cover out by maneuvering it in between the wiper transmission and the brake booster and pull the cover out of the way. Remember how you pulled it out so you know how to put in back into place to mount it.

Start to pull out the wiper transmission but it will not come out all the way.
Figure 23

Start to pull out the wiper transmission but it will not come out all the way. The wiring harness for the wiper motor is still connected. Position the wiper transmission so you can access the electrical connector (green arrow).

This photo illustrates the wiper motor electrical connector that we mentioned in the previous photograph
Figure 24

This photo illustrates the wiper motor electrical connector that we mentioned in the previous photograph. It is connected to the wiper motor at the base of the windshield on the left side of the firewall. Squeeze between the front and the back of the connector and slide it downward to unlock it. Now pull away from the motor to unplug it. Now you can pull the wiper transmission assembly away from the vehicle to perform additional work if necessary.

Use a pair of pliers to hold the wiper linkage from spinning.
Figure 25

Use a pair of pliers to hold the wiper linkage from spinning. With a 13mm wrench remove the linkage mounting fastener.

Using a pry bar lever up on the wiper arm linkage until it comes off of the wiper motor shaft.
Figure 26

Using a pry bar lever up on the wiper arm linkage until it comes off of the wiper motor shaft. You may want to lever on both sides to gradually work it off. Keep in mind the position that it is in so you can return it to the same spot when you are done. You may want to mark both the shaft and the linkage with a paint marker.

Move the linkage arm out of the way to expose the three 10mm fasteners that
Figure 27

Move the linkage arm out of the way to expose the three 10mm fasteners that mount the motor to the transmission.

Remember to position the wiper linkage for installation (red arrow).
Figure 28

Remember to position the wiper linkage for installation (red arrow). You may want to put a paint marker on the shaft, fastener and linkage so you can line things up during installation.

You can now separate the motor from the transmission.
Figure 29

You can now separate the motor from the transmission. If you are installing a new motor, it may be a good idea to plug in the motor electrically at the car and turn the wipers on and off before assembly the wiper linkage. This will return the motor to the park position. You should then install the linkages in the same position you pulled them out. Once the wiper transmission is installed you should run the wipers again to verify the park position and then install the wiper arms in their old position and tighten down the fasteners. The torque spec for these fasteners is written on the plastic cover if you want to use them, Installation is the reverse of the removal steps. Remember to install the base windshield cover with the left and right ends mounted under the rubber seals out by the lower corners of the windshield.

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Comments and Suggestions:
Mfan Comments: After the reintallation of the wiper arms i turn on the wipers for a test run and they don't work, instead they go down into under the hood and stop. Did i miss an additional step not mentored? I followed all the steps as indicated for the taking off and reinstalling the arms. Model 2000 m5
September 16, 2016
  Followup from the Pelican Staff: Not likely. Remove the wiper arms. Turn the wipers on, then off. Wait a moment. Then install the wiper arms. The motor may need to put in PARK. - Nick at Pelican Parts  
pendergrass28 Comments: How do I reinstall the locking tab on the wiper blade?
February 24, 2016
  Followup from the Pelican Staff: It should snap onto the shaft on the wiper blade. - Nick at Pelican Parts  
Patrick Comments: bmw 523i , 1998, e39. After taking out the wiper motor, i assembled and found that the plastic gear that rotate inside is broken. The tooth got filed off. What could have happened and is't possible to find tha inside plastic alone without buying the whole motor. ???
August 28, 2015
  Followup from the Pelican Staff: The transmission for the wipers may be seized. I am not aware of a gear that is available. - Nick at Pelican Parts  
kensav Comments: Please include wiper arm puller
July 14, 2015
  Followup from the Pelican Staff: In the kit, give us a call. - Nick at Pelican Parts  
kensav Comments: I want to buy the complete arm assembly including wiper blades and all required washers, the motor assembly is not required.
Please price
Thank you
July 14, 2015
  Followup from the Pelican Staff: You didn't mention what vehicle you have.

For a fast reply,

Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
kensav Comments: I want to buy the complete arm assembly including wiper blades and all required washers, the motor assembly is not required.
Please price
Thank you
July 14, 2015
  Followup from the Pelican Staff: You didn't mention what vehicle you have.

For a fast reply,

Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need. - Nick at Pelican Parts
 

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Page last updated: Mon 12/5/2016 02:05:30 AM