luckylg
Nov 19, 2013Explorer
Dewald slide pump issues
This was previously discussed here but the information was out of date. I've included some sourcing info and new part number below.

I have the Dewald hydraulic pump for my slide and recently, while sliding out, the pump would continue to run. Sliding in was no problem, but sliding out it would run until the breaker was tripped. I found the old manual and found that this was related to the failure of one of the two solenoid's on the pump.

I tried to reach Dewald, but they're long gone. I then contacted White-Rogers who have their name and part number on the actual coil (this was previously discussed). Turns out the part is proprietary (they make it for someone else) so they couldn't tell me which of their parts would work (they have several that look close) but they did provide me with the current owner of the part. That sent me in a spiral of phone calls and emails that ended up with me pulling my hair out in frustration.
On a whim, I stopped in to the CW parts counter. No luck with the part numbers I'd collected in my phone calls. Just as I was about to leave the counter girl suggested I talk with someone in service. As I approached the counter with part in hand the guy said, "oh, I've got one of those" and disappeared. Turns out he did not, but he did steer me to a local distributor.
So, if you need to repair this pump, try CW first (go to the oldest guy behind the counter...he'll know!). CW's part number is WR120-943. Then, if you don't have any luck, you can place your order here:
Laurelhurst RV Equipment
503-953-1083
Part# PGWZ1000
Solenoid 12VDC OILDYNE PUMP
$42.70
I went ahead and replaced both since access is an issue. Here's a photo of the wiring on my pump.

Hope this helps someone else (and their hairline!)
I have the Dewald hydraulic pump for my slide and recently, while sliding out, the pump would continue to run. Sliding in was no problem, but sliding out it would run until the breaker was tripped. I found the old manual and found that this was related to the failure of one of the two solenoid's on the pump.
I tried to reach Dewald, but they're long gone. I then contacted White-Rogers who have their name and part number on the actual coil (this was previously discussed). Turns out the part is proprietary (they make it for someone else) so they couldn't tell me which of their parts would work (they have several that look close) but they did provide me with the current owner of the part. That sent me in a spiral of phone calls and emails that ended up with me pulling my hair out in frustration.
On a whim, I stopped in to the CW parts counter. No luck with the part numbers I'd collected in my phone calls. Just as I was about to leave the counter girl suggested I talk with someone in service. As I approached the counter with part in hand the guy said, "oh, I've got one of those" and disappeared. Turns out he did not, but he did steer me to a local distributor.
So, if you need to repair this pump, try CW first (go to the oldest guy behind the counter...he'll know!). CW's part number is WR120-943. Then, if you don't have any luck, you can place your order here:
Laurelhurst RV Equipment
503-953-1083
Part# PGWZ1000
Solenoid 12VDC OILDYNE PUMP
$42.70
I went ahead and replaced both since access is an issue. Here's a photo of the wiring on my pump.
Hope this helps someone else (and their hairline!)