Author Topic: Windshield Wiper Motor  (Read 1766 times)

jdv69z

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Windshield Wiper Motor
« on: April 13, 2017, 07:42:37 PM »
So I read the posts from 2015 regarding dating the wiper motors, and was checking mine out. I see the "Typee 12V" embossed into my unit, but do not see any trace of a part number above that. In the pic's from the previous posts, it appears that is where the part number should be located. Is is just thick paint obscuring my part number, or am I missing something else?
Jimmy V.

z28z11

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Re: Windshield Wiper Motor
« Reply #1 on: April 14, 2017, 01:38:36 AM »
Usually stamped into the end plate where you suggested it should be. Every original motor I have ever seen has the number stamped there - RS or open headlight car. If you have no visible stamp, or even a trace of one showing, it might possibly be a replacement motor. Stamps are heavy enough to be seen even under some pretty thick top coats.

I assume your motor has the headlight washing system ? Date codes on originals took two forms, a silver label with the part number and date code, and/or an inked date code and part number (most times yellow) on the side of the case. I have and have seen examples of both.

Include a close up pic of your end frame for our fanatical eyes - and include a shot of the edges of the motor case. Late replacements and imports use a different case assembly fastener that's easy to spot.

Regards,
Steve
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

ZLP955

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Re: Windshield Wiper Motor
« Reply #2 on: April 14, 2017, 08:25:19 AM »
Stamped number on the end of the casing appears to have transitioned over to a silver sticker on the side some time in the first quarter of the 1969 calendar year, along with the change in the side stamp from Rochester NY to Dayton Ohio production. Both stickers and end stampings have been observed on the same unit from early 1969 calendar year, until stickers only were used.
If you could add your data to the wiper motor date thread, that'd be great!
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

jdv69z

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Re: Windshield Wiper Motor
« Reply #3 on: April 14, 2017, 08:58:03 PM »
Oct 69 build Z, rally sport. Missing the washer system solenoid, but all other components of the headlight washer system I have. I'll get a pic and post soon. I was expecting to see a part no., so I was surprised when all I could make out was the Typee 12V. About 95% sure that it's the original unit.
Jimmy V.

z28z11

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Re: Windshield Wiper Motor
« Reply #4 on: April 14, 2017, 11:38:40 PM »
Look at the flange where the solenoid valve mounts - should have 2 offset holes if it's an original RS unit (regardless of no stamp and missing date tag). If the mounting holes aren't present, it's likely a replacement. These things were replaced a lot of times, and didn't necessarily get the valve remounted as most, if not all OTC motors were not drilled. Post a pic if you want us to scope it out

Regards,
Steve
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

JKZ27

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Re: Windshield Wiper Motor
« Reply #5 on: April 15, 2017, 12:42:18 AM »
Also, aren't the RS solenoids ink stamped with a date? I know you said yours was missing Jimmy but I thought I'd bring it up.
John
69 RS/SS Cortez Silver, L48 MC1
68 RS Ash/Ivy Gold 327EFI M20

z28z11

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Re: Windshield Wiper Motor
« Reply #6 on: April 15, 2017, 02:14:56 PM »
GM part number and date coded, ink stamped on the frame of the solenoid coil - usually visible even on very worn originals. Reproductions are close, but slightly different font and spacing.

Regards,
Steve
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

jdv69z

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Re: Windshield Wiper Motor
« Reply #7 on: April 15, 2017, 09:01:52 PM »
OK, here's pics. In one the remnants of a sticker? Top view where RS solenoid should be mounted. End view where part no. should be stamped. And the verdict is........?
Jimmy V.

jdv69z

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Re: Windshield Wiper Motor
« Reply #8 on: April 15, 2017, 09:04:53 PM »
End View
Jimmy V.

jdv69z

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Re: Windshield Wiper Motor
« Reply #9 on: April 15, 2017, 09:06:06 PM »
Top View
Jimmy V.

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Re: Windshield Wiper Motor
« Reply #10 on: April 16, 2017, 02:10:01 AM »
Looks like the sticker fell off, or was peeled off. As stated previously, later assemblies only had the part number on the silver sticker, so it'd be fine to see nothing stamped on the end except 'TYPE E 12V' well before your car's build date of October 1969.
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

jdv69z

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Re: Windshield Wiper Motor
« Reply #11 on: April 16, 2017, 12:35:56 PM »
I see I have mistakenly misled here. My car's build date is 10B, Oct 68. Not 69. VIN 516355. Now should it have a part no. stamped on the end? Just fyi I have attached a pic of my original hoses and nozzles still connected together as they were removed from the car before I bought it, circa 1982.
Jimmy V.

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Re: Windshield Wiper Motor
« Reply #12 on: April 16, 2017, 10:28:20 PM »
Jimmy, an early 69 MY car like yours would have had a wiper motor assembly with the stamped part number on the end. The remains of the silver sticker on yours suggest that it's an OE unit from later production, that was used to replace the original. Another alternative is that it's a more recent remanufactured part using some OE components (such as the casing) and the remanufacturing process included an attempt at removing the sticker.
Does it appear to have been repainted black, and does the casing say Rochester NY or Dayton Ohio?
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

jdv69z

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Re: Windshield Wiper Motor
« Reply #13 on: April 17, 2017, 01:10:27 AM »
Where would it say Rochester or New York? No evidence of it being repainted, but that doesn't mean that it wasn't.
Jimmy V.

z28z11

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Re: Windshield Wiper Motor
« Reply #14 on: April 17, 2017, 02:38:09 AM »
Jimmy,

I can just about guarantee this particular example is not your original motor. The shot you posted of the top of the motor shows enough of the flange to where you can see the mounting surface for the valve - no holes to mount it with as would be present on original 5605 RS motor assemblies. Take me a bit to get a pic of the end plate and flange where the valve mounts on one of my originals (I recently switched computers, have to go back through my archives). but from what you've shown so far this one looks to be a replacement.

Regards,
Steve
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

ZLP955

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Re: Windshield Wiper Motor
« Reply #15 on: April 17, 2017, 11:08:49 AM »
Where would it say Rochester or New York? No evidence of it being repainted, but that doesn't mean that it wasn't.
The stamping is on the same side of the motor casing as the remains of the silver sticker in one of your pictures above. I can make out some of it, but not all. Not hard and fast, but observations so far in the limited number of data points in the wiper motor date code thread indicate that the casing changed from having 'Rochester NY' to 'Dayton, Ohio' around the same time the assembly part number stamping stopped appearing on the end.
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

jdv69z

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Re: Windshield Wiper Motor
« Reply #16 on: April 17, 2017, 06:33:41 PM »
Delco on the side. Good thing for cameras. I couldn't see anything with my eyes.
Jimmy V.

jdv69z

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Re: Windshield Wiper Motor
« Reply #17 on: April 17, 2017, 06:38:13 PM »
Well if it's a replacement, that explains why the nozzles and hoses were removed. And I can stop thinking that maybe I have the solenoid in the leftover parts I still have from the purchase, when I never really did.
Jimmy V.

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Re: Windshield Wiper Motor
« Reply #18 on: April 17, 2017, 06:42:39 PM »
For comparison here's the wiper motor I got off of a low mileage 69  RS Z/28, 11A build:







John

69 Z/28 NOR 12B X33 H.O. 'Ex-Racer'

jdv69z

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Re: Windshield Wiper Motor
« Reply #19 on: April 17, 2017, 06:52:52 PM »
So if it's a replacement, whoever replaced it got one without the solenoid because it was less expensive?
Jimmy V.

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Re: Windshield Wiper Motor
« Reply #20 on: April 18, 2017, 04:14:28 AM »
Possibly, or it may not have been a deliberate decision - maybe just got a standard (non-RS or CE1) wiper motor, interchange with 5045572 instead of 5045605 and found nothing to hook the headlamp washers up to.
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

jdv69z

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Re: Windshield Wiper Motor
« Reply #21 on: April 18, 2017, 01:24:29 PM »
Or maybe they didn't like the feature and just eliminated it. Every time the washer fluid button it is depressed, it does the windshield and the headlamps, correct? So if the lights aren't on, it's washing the covers?
Jimmy V.

BULLITT65

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Re: Windshield Wiper Motor
« Reply #22 on: April 18, 2017, 02:07:04 PM »
Thats funny Jimmy. So you had to pre plan if you were going to clean the windshield, by turning on the headlights first?
1969 garnet red Z/28 46k mile unrestored X77
-Looking for 3192477 (front) spiral shocks 3192851 (rear)
-Looking for an original LOF soft ray windshield
-Looking for original Delco side post negative battery cable part # 6297651AV

Z28Project

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Re: Windshield Wiper Motor
« Reply #23 on: April 18, 2017, 02:24:13 PM »
I always felt it was kind of a gimmick anyway.
John

69 Z/28 NOR 12B X33 H.O. 'Ex-Racer'

jdv69z

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Re: Windshield Wiper Motor
« Reply #24 on: April 18, 2017, 03:10:38 PM »
Thats funny Jimmy. So you had to pre plan if you were going to clean the windshield, by turning on the headlights first?

I think that's right. Wasn't there a tag hanging from the switch on the new vehicles that explained how it worked? Surely, someone has a pic of that tag?
Jimmy V.