Hydrovac
Moderator: Kevin Lockwood
- steveo916
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Re: Hydrovac
a couple things that probably don't matter but.
I don't think copper lines are approved for brakes.
also there is some movement between the master cylinder and hydrovac and hydrovac to frame so the line should do a loop or jog this way and that to reduce line stress.
that is how the originals where and yours is likely to move more.
I don't think copper lines are approved for brakes.
also there is some movement between the master cylinder and hydrovac and hydrovac to frame so the line should do a loop or jog this way and that to reduce line stress.
that is how the originals where and yours is likely to move more.
m16 halftrack
- mkoloc
- LTC, U.S. Army
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Re: Hydrovac
Steve, keeping it original, as that fits with the preservation project objective. I have been to several car shows in my area and have observed a number of vintage restored cars (Titled and Licensed) with copper lines.
Both lines coming from the Hydrovac have bends in them so I'm not quite sure what you mean. I'm curious as to why they would have rebuilt it this way in 52 if there is serious movement = failure? Brackets, mounts etc. are exactly as they were when rebuilt in.The intended brake line pressures are not that high, and the master cylinder isolates the brake pedal movement via its extensive linkage and three mounting bolts. I will keep an eye on it. I guess time will tell.
Jon, let me know if I can assist. Safe travels my friend!
Both lines coming from the Hydrovac have bends in them so I'm not quite sure what you mean. I'm curious as to why they would have rebuilt it this way in 52 if there is serious movement = failure? Brackets, mounts etc. are exactly as they were when rebuilt in.The intended brake line pressures are not that high, and the master cylinder isolates the brake pedal movement via its extensive linkage and three mounting bolts. I will keep an eye on it. I guess time will tell.
Jon, let me know if I can assist. Safe travels my friend!
LTC Mark Koloc USA (RET)
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
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- Jeep Heaven
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Re: Hydrovac
Do NOT use Copper tubing on brakes. It will not pass safety inspection. Should you have a brake failure accident you will be in big time trouble.
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HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
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Re: Hydrovac
The copper lines you are seeing on vehicles are actually steel lines with a copper coating to help against rust. Absolutely do not use actual copper lines. They are not rated for brake pressure. They are to soft.
Steve A.
Steve A.
1941 White M2A1 (90% restored)
1945 M10 ammo trailer (restored)
1945 M10 ammo trailer (restored)
- mkoloc
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Re: Hydrovac
Well you have me convinced! I will,swap them out. Thank you for the info and advice.
LTC Mark Koloc USA (RET)
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
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Re: Hydrovac
The line you are seeing at the shows is most likely nickel-copper brake tubing. It is an approved material for brake lines that is easier to bend and has better corrosion resistance compared to steel tubing.
Gary
Gary
MVPA Member
M2A1 Half Track ( Undergoing Resto)
M10 Ammo Trailer
M2A1 Half Track ( Undergoing Resto)
M10 Ammo Trailer
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Re: Hydrovac
I have one of the earlier hydrovac on my halftrack (doesn't work) is it much of a job to change to the 3rd generation hydovac?
- mkoloc
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Re: Hydrovac
I think you would just have to modify your two brake lines and you might have to fab up a front mounting bracket which is simple to do, flat plate with a 90 degree bend. Seals for the WWII Hydrovac seem to be an issue, and the NOS rebuild kits are dried up and they cause problems when used (reading thru previous forum posts). My two cents.
LTC Mark Koloc USA (RET)
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
- steveo916
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Re: Hydrovac
when i did mine i was able to use the original front bracket with no modification.
i made the rear bracket from 1/4" plate.
http://halftrackinfo.com/index.php?acti ... 2070;image
i made the rear bracket from 1/4" plate.
http://halftrackinfo.com/index.php?acti ... 2070;image
m16 halftrack
- spillmk1
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Re: Hydrovac
Dittos!!
Much easier to work with.
Keith
1955 M38A1 Jeep
1953 M100 Trailer
1941 White M2A1 Half Track
1953 M100 Trailer
1941 White M2A1 Half Track
- mkoloc
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Re: Hydrovac
Steve, did you mean front bracket fabrication? Rear brackets should have been the same as it is just a single hole bracket for back of Hydrovac.
LTC Mark Koloc USA (RET)
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
- steveo916
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Re: Hydrovac
mark
your mounts are not original equipment. original where of similar size front and back
http://i165.photobucket.com/albums/u58/ ... 3748-1.jpg
I made my rear mount very rigid because any movement in the hydrovac would mean the brake lines are flexing which may lead to a break.
your mounts are not original equipment. original where of similar size front and back
http://i165.photobucket.com/albums/u58/ ... 3748-1.jpg
I made my rear mount very rigid because any movement in the hydrovac would mean the brake lines are flexing which may lead to a break.
m16 halftrack
- mkoloc
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Re: Hydrovac
Thanks Steve ... Great pic of the original Hydrovac...tis all clear to me now, said the blind man!
LTC Mark Koloc USA (RET)
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
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Re: Hydrovac
My M16A1 is a 1951 conversion with a second series tandem piston hydrovac, needing overhaul...
M3 37mm Cannon Parts and Resin Weapon Replicas. We also manufacture reproduction Stuart parts.
Fuel tanks, Rear Exhaust and Air Deflectors, and other components.
314-703-9710
Fuel tanks, Rear Exhaust and Air Deflectors, and other components.
314-703-9710
- mkoloc
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Re: Hydrovac
Jon, are you going to rebuild or replace? Hemings Motor Magazine has adds for many vendors who rebuild or have the parts if you want to do your own.
Mark
Mark
LTC Mark Koloc USA (RET)
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
MVPA Member # 31144
1631 Bitter Creek Lane
Batavia, OH 45103
Cell: 1.715.821.9426
mkoloc44@yahoo.com
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