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| | | Joined: Jan 2013 Posts: 603 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 603 | On my 57 GMC 370 cab forward, it has 2 wheel cylinders per wheel on the front. Are all 4 of these the same part? My NAPA guy has ordered for me and he says there may be different left to right or top to bottom cyls. I have all of them off and tried to keep up with where each one came from, but they got mixed up when I was at the parts store. They all 4 looked the same to me. Thanks.
57 GMC LCF 370 55 John Deere 40-W 59 John Deere 430-W 2000 GMC 4x4 56 John Deere 420-W Pix on Photobucket | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The difference is probably in the angle of the hole for the tube.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: May 2012 Posts: 35 New Guy | | New Guy Joined: May 2012 Posts: 35 | Take them apart and measure the bores. That's really the only way to tell if they are different. | | | | | Joined: Jan 2013 Posts: 603 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 603 | Thanks, I thought of that, Guess I will just have to figure it out as I go when re-installing.
As to the bore, they were frozen up with corrosion, I couldnt get into them without destroying everything inside.
Thought it best not to, since I may need them for cores.
Last edited by Old coe; 01/21/2013 4:07 PM.
57 GMC LCF 370 55 John Deere 40-W 59 John Deere 430-W 2000 GMC 4x4 56 John Deere 420-W Pix on Photobucket | | | | | Joined: Dec 2008 Posts: 899 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 899 | Just guessing, if all the wheel cylinders were the same wouldn't they all have the same casting number on them? And if they were different they would have different casting numbers on them, just a thought.
Brian
1955.2 3100 Truck
The older I get the more dangerous I am!!!!! | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | The difference is probably in the angle of the hole for the tube. Or the bleeder. They could have different bores. Just guessing, if all the wheel cylinders were the same wouldn't they all have the same casting number on them? And if they were different they would have different casting numbers on them, just a thought. I imagine the same casting could have different bores, too. | | | | | Joined: Jan 2013 Posts: 603 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 603 | I have only been able to make out the casting number on one of them. Others are rusted away. I have been comparing all 4 of them more, since posting. The line fitting is same on all, but it does look like the bleeder is in the oppisite location on 2 of them. So when re-installing I think I will find it takes one of each # on one side. I do have a manual on the way. Now finding the rubber lines, my NAPA is unable to get them.
Cannot wait to get into the rears.....ain't this fun? lol.
57 GMC LCF 370 55 John Deere 40-W 59 John Deere 430-W 2000 GMC 4x4 56 John Deere 420-W Pix on Photobucket | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Old coe, according to one of my brake books (Wagner) all the front wheel cylinders are the same, they have a 7/8" bore, the Wagner p/n is/was 19944. These particular wheel cylinders have not been available for a few years through your F.L.A.P.S., there may be a vintage parts supplier that has some of them. As to the hoses the fronts are Napa p/n UP4900 $15.99, the rears are p/n UP4497 $13.49. At RockAuto the hoses are Raybestos front p/n BH4900 $10.22 Can. dollars, rears are p/n BH4497 $8.07 Can. dollars, hope that helps | | | | | Joined: Jan 2013 Posts: 603 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 603 | Thanks a bunch! Wiii keep you posted.
57 GMC LCF 370 55 John Deere 40-W 59 John Deere 430-W 2000 GMC 4x4 56 John Deere 420-W Pix on Photobucket | | | | | Joined: Jan 2013 Posts: 603 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 603 | They fit! Two NAPA# 8553's for the RF and two NAPA# 8552's for the LF. Moving along....
57 GMC LCF 370 55 John Deere 40-W 59 John Deere 430-W 2000 GMC 4x4 56 John Deere 420-W Pix on Photobucket | | |
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