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53 9430 Dump - Help with Hydraulics!
#1404988 Tue Apr 06 2021 03:21 PM
Joined: Jul 2014
Posts: 11
F
'Bolter
I have a 1953 GMC 9430, it has a dump bed that I am struggling to find any information on. The Tag on the dump frame syas "Sherwood" Model S45 (Regina, Saskatchewan). the Pull knob for the PTO says Grainmaster on it. Sherwood doesnt exist that I can see, and Grainmaster is in Manitoba, but has no infomration on any older units. Sherwood is an rural area of Regina, I figure this was installed by a company from the area using Grainmaster components?
The frame is a single Cylinder scissor lift. The Cylinder is where I am struggling, it has no part numbers or stamped idetification. It leaks, and I can not find a replacment that matches its dimeneions, so I decided I can rebuild it. But I can't figure out how to open the it! once open, its just a hand full of seals. Has anyone ever seen this type of Cylinder? or have any information on it?
Take a look at the attatched picture of the gland head. It looks like there is some sort of coil/split ring lockig ring (the thin black ring running arround the inside edge of the cap), but it is under the 3 posts on the cap, I cant figure how to remove it.

Attached Files
IMG_20210406_080128_c.jpg (505.22 KB, 156 downloads)
Last edited by farmtruck53; Tue Apr 06 2021 03:33 PM.
Re: 53 9430 Dump - Help with Hydraulics!
farmtruck53 #1404990 Tue Apr 06 2021 04:06 PM
Joined: Apr 2005
Posts: 10,213
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Does the top of the cylinder unscrew from the body using a drift punch and hammer?


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”



"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)

Re: 53 9430 Dump - Help with Hydraulics!
farmtruck53 #1404992 Tue Apr 06 2021 04:10 PM
Joined: Jul 2014
Posts: 11
F
'Bolter
It doesnt seem to, I have tried. The retaining ring I can see would be holding it in even if it would turn. I think that retaining ring has to come out first somehow. It looks a bit like a spirolox style retianing ring. But the way it is installed in the head, I just cant see how to get it out. I'll try and take some Macro pictures of the ring.

Added some pictures. You can se it is some kind of layered spring to lock it in. The second picture you can see where it is split like a Spirolox.

Attached Files
IMG_20210406_091344.jpg (139.79 KB, 146 downloads)
IMG_20210406_091318.jpg (200.87 KB, 149 downloads)
IMG_20210406_091251.jpg (219.13 KB, 145 downloads)
Last edited by farmtruck53; Tue Apr 06 2021 04:18 PM. Reason: picutres
Re: 53 9430 Dump - Help with Hydraulics!
farmtruck53 #1405000 Tue Apr 06 2021 05:35 PM
Joined: Aug 2018
Posts: 615
2
'Bolter
Maybe you need to screw it in to release the keeper ring
Then it unscrews out ?

Do you have access to an X-ray machine? I’ve used one at work for situations like these, just need to keep messing with beam power and integration time until you get a reasonable image.
-s

Re: 53 9430 Dump - Help with Hydraulics!
farmtruck53 #1405003 Tue Apr 06 2021 05:45 PM
Joined: May 2015
Posts: 4,500
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
If that's a spiral ring, you probably need to "unscrew" it from the three ears. It should be flexible enough that you could do that. Like 2ManyTrucks suggested, maybe the plug needs to be screwed in a bit to release the pressure on the ring.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: 53 9430 Dump - Help with Hydraulics!
klhansen #1405073 Wed Apr 07 2021 02:23 AM
Joined: Jul 2014
Posts: 11
F
'Bolter
Alright. I had another go at it. The gland cap does turn, though its not threaded. The fluid fitting actually goes through the cylinder barrel, and threads into the gland cap. So that fluid fitting had to be removed first, then the cap turns. I was then able to spin the cap to help the split retaining ring to uncoil from the groove.
Once that was out of the way, it was pretty simple to tap it appart and remove the seals. Now I just need to match up the seals with replacments and put it all back together!

Attached Files
IMG_20210406_171852.jpg (124.79 KB, 128 downloads)
IMG_20210406_173137.jpg (254.48 KB, 127 downloads)
IMG_20210406_173150.jpg (200.58 KB, 126 downloads)
IMG_20210406_181154.jpg (173.01 KB, 127 downloads)
IMG_20210406_183424.jpg (207.98 KB, 126 downloads)
Last edited by farmtruck53; Wed Apr 07 2021 02:29 AM.
Re: 53 9430 Dump - Help with Hydraulics!
farmtruck53 #1405098 Wed Apr 07 2021 12:28 PM
Joined: Apr 2005
Posts: 10,213
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
thumbs_up


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”



"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)

Re: 53 9430 Dump - Help with Hydraulics!
farmtruck53 #1405273 Fri Apr 09 2021 12:39 AM
Joined: Mar 2021
Posts: 25
J
'Bolter
Is there just the one ram for the hoist? My 52 GMC 9430 has two. I found out my truck was made in Oshawa, shipped to Saskatewan, and had the hoist installed out there. My system has Robin-Nodwell cast into the parts. My understanding that there were several businesses installing these at the time. When I got my cylinders apart (3 part telescoping), I took them to local business that rebuild hoists (I could not get the cylinder flange off as I did not have a 5 inch wrench to turn it). They told me that the manufacturer no longer existed but they should be able to match up a seal kit.

You might want to take the parts into your local hoist/hydraulic business and talk to them.
James S.

Attached Files
52 GMC Left hoist cyl.JPG (32.11 KB, 97 downloads)
52 GMC twin hydraulic rams.JPG (42.12 KB, 97 downloads)
Re: 53 9430 Dump - Help with Hydraulics!
farmtruck53 #1405274 Fri Apr 09 2021 12:44 AM
Joined: Jul 2014
Posts: 11
F
'Bolter
Yeah, mine has a single 4" bore 10" stroke cylinder on a scissor lift. I dropped off all the wear parts, seals and such at a hydraulics seals supplier locally. Just dropped them today. They said they would have no problem matching them up.
I'll take some pictures when I get it all back together.

Last edited by farmtruck53; Fri Apr 09 2021 02:30 PM.
Re: 53 9430 Dump - Help with Hydraulics!
farmtruck53 #1405638 Sun Apr 11 2021 07:26 PM
Joined: Dec 2018
Posts: 931
F
'Bolter
Farmtruck 53 They're right find your local hydraulic shop,bet they can help you ! my local shop is a guys all common as dirt type place like FLAPS except FLHRS freindly local hydraulic repair shop ! Take donuts ! about 8:30 AM LOL Good Luck !!

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