I have a few questions about the winshield washer pump and it's replacement...

[rogus]

Don't know if this is the right group to post this in so if it is let me know please. I have some questions about replacing the the washer motor. Does anyone have a lists of steps because I've missed one or two.

I just installed a new one but I'm getting very litlle pressure at the washer sprayer nozzles. It seems to get there and just kinda dribbles out like a leaky faucet does. I've replaced the rubber lines. Does this thing require some type of priming? If so how is that done?

 

[69hurstolds]

Don't know if this is the right group to post this in so if it is let me know please. I have some questions about replacing the the washer motor. Does anyone have a lists of steps because I've missed one or two.

I just installed a new one but I'm getting very litlle pressure at the washer sprayer nozzles. It seems to get there and just kinda dribbles out like a leaky faucet does. I've replaced the rubber lines. Does this thing require some type of priming? If so how is that done?

Not sure what year you're working on. Either type are designed to be self priming. If you have the diaphragm style (old school) they use rubber discs as inlet and outlet valves with an actual piston pump to "suck and blow" the fluid. Air kills piston pump systems like this faster than it would the later self-contained rotary pump. They use a little rubber disc that spins pretty quick and shoots fluid when told to by the wiper system. Much more robust than the piston type.

If you just want to make sure, you could PUSH fluid through the piston type system. Take a large syringe with water in it and connect it to the washer fluid tank hose and push it on through. It should push most of the air out.

Take the end of the hoses off the nozzles and see if it squirts out the end of the hoses. If it does, there may be dirt/debris in the nozzles. Just throwin' spaghetti here.

 

[jcelk]

could be clogged nozzles take the hose off the nozzles and see if it has good pressure

 

[rogus]

Not sure what year you're working on. Either type are designed to be self priming. If you have the diaphragm style (old school) they use rubber discs as inlet and outlet valves with an actual piston pump to "suck and blow" the fluid. Air kills piston pump systems like this faster than it would the later self-contained rotary pump. They use a little rubber disc that spins pretty quick and shoots fluid when told to by the wiper system. Much more robust than the piston type.

If you just want to make sure, you could PUSH fluid through the piston type system. Take a large syringe with water in it and connect it to the washer fluid tank hose and push it on through. It should push most of the air out.

Take the end of the hoses off the nozzles and see if it squirts out the end of the hoses. If it does, there may be dirt/debris in the nozzles. Just throwin' spaghetti here.

I've attached a picture of the pump. Just to e sure, is this a rotary pump style? I hadn't thought about the syringe idea. I think I have something in the garage that would work to do that.

 

[69hurstolds]

You got the 84-up style. It's the rotary type. These are controlled by the WSW circuit and if you have delay wipers, it's controlled by the motherboard inside the cover. Assuming you have delay wipers, did you install the cover properly with the blue wheel or pointer piece at the proper position?

Is everything grounded properly? I'm not an electrician, so I'm not the one to ask what's what about electricals.

Here's what's in the wiring diagrams for it. Not much help. You can maybe put 12v across the spray motor terminals while it's out to see if the motor spins. But if you hear it spinning while operating, it could be something else.

And here's what you need to make sure of as far as the blue pointer or wheel- They should look like this position when installing on a PARKED WSW motor. Again, only if you have the Delay Wiper Option RPO CD4.

 

[rogus]

You got the 84-up style. It's the rotary type. These are controlled by the WSW circuit and if you have delay wipers, it's controlled by the motherboard inside the cover. Assuming you have delay wipers, did you install the cover properly with the blue wheel or pointer piece at the proper position?

Is everything grounded properly? I'm not an electrician, so I'm not the one to ask what's what about electricals.

Here's what's in the wiring diagrams for it. Not much help. You can maybe put 12v across the spray motor terminals while it's out to see if the motor spins. But if you hear it spinning while operating, it could be something else.

View attachment 247709

And here's what you need to make sure of as far as the blue pointer or wheel- They should look like this position when installing on a PARKED WSW motor. Again, only if you have the Delay Wiper Option RPO CD4.
View attachment 247710

View attachment 247711

I appreciate the info. The only thing I replaced was the pump which didn't require taking anything apart. The pump simply pulls out of the bottom of the entire assembly. I didn't disassemble the parts in the pictures. Do I need to?

 

[69hurstolds]

Sorry, my bad. I thought I read you had replaced the entire WSW motor, which usually don't come with a cover. Derp.

NO. You do not have to disassemble anything but that little clip on the cover that holds the pump in place. Just be careful not to break that slot area where the tab goes. Covers with the electronic guts are UNOBTANIUM.

 

[rogus]

Sorry, my bad. I thought I read you had replaced the entire WSW motor, which usually don't come with a cover. Derp.

NO. You do not have to disassemble anything but that little clip on the cover that holds the pump in place. Just be careful not to break that slot area where the tab goes. Covers with the electronic guts are UNOBTANIUM.

"Covers with the electronic guts are UNOBTANIUM.", Yeah found that out when trying to find a new one. I like to have a spare.