Death wobble solved! But my brakes went out :(

linx310 · Member Joined: Jul 05, 2009 Posts: 158 Location: Texas

Well my new tires did the trick. I got rid of the 40 year old dry rotted and mismatched (they were both NDT and NDCC!) set my M38A1 had and replaced them with a brand new set of Denmans.

I took the rims and the tires down to a tire shop and had them professional mounted and high speed balanced by a computer.

Me and my brother went for a 45 minute ride and it cruises at 45-50 mph smoothly with no wandering or death wobble. And because i replaced almost every steering component it steers like new.

The trip went fine until I pulled into a gas station a mile from home to get some thing to drink. When I went back out to drive home my brake pedal was as hard as a rock.

I managed to get it home using the emergency brake.

I tried to get the master cylinder top cover off but bubba has stripped it (i will post pics latter) so I could not get it open this time. Last time I was able to get it open by hand, not this time.

To get brake power back temporarily I had my brother push down on the brake pedal and I cracked open a bleeder screw to release some of the fluid. There didn't appear to be any air in the lines. I also inspected all the brake lines and didn't see any leaks.

Since the top fill cover is stripped I am going to have to remove the master cylinder to get it off. Rather then reinstall the old one which has a bunch of crap in it i am sure, I ordered a new one from Midwest military.

When it arrives i am going to put compressed air into all the brake lines and flush the fluid out completely and install the new master cylinder.

maeserik · Posted: Sun Nov 01, 2009 12:44 pm Post subject:

I think it is your MC. There is a little valve in the MC wich let a little pressure in the brakelines after releasing the brake pedal. In our club there was a member wich had the same problem. He unscruwed the brakelightswitch a little to let the pressure go away and he could brake again for some period. With a new MC things would be solved, my opinion. Replace the MC with a new one, it is a safety part !
Clean the lines and replace the parts wich looks in a suspected state.
(rubber flexible parts, wheelcylinders)

Erik
_________________
1942 GPW 71336 my son's jeep restored now
1951 M38 MC11891
1953 VW beetle (genuine german Käfer )
1957 fantastic wife

http://www.surfacezero.com/g503/showgallery.php?cat=1865

and this webside

linx310 · Member Joined: Jul 05, 2009 Posts: 158 Location: Texas

Yea thats what i decided to do. I just ordered a completely new master cylinder rather then to keep fiddling with it.

wesk · Posted: Sun Nov 01, 2009 3:51 pm Post subject:

Don't overlook aged rubber hoses. Their inner lining can collapse and act like a restriction and not let fluid pass. In some cases they will still let fluid pass but then trap it towards the brake causing the brake to drag. The industry standard life on rubber parts is 10 to 12 years.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php

linx310 · Member Joined: Jul 05, 2009 Posts: 158 Location: Texas

Dano · Posted: Sun Nov 01, 2009 6:07 pm Post subject:

Any good army jeep parts supplier will have them.
Danny
_________________
Danny
MVPA # 32807
1952 M38 MC 70731
1946 Bantam Trailer
1983 CJ7

wesk · Posted: Sun Nov 01, 2009 8:05 pm Post subject:

Any good CJ3B/CJ5 jeep parts source will have them, like NAPA and etc. Take your old hoses to the store with you.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php

TomM · Posted: Mon Nov 02, 2009 7:26 am Post subject: lines

Be prepared to also replace a couple of the steel lines since they can rust into the hose ends and will be destroyed when you remove them. The toughest lines to make are the S lines on the steering knuckles. Mail order vendors sell them.

While you are at it, its easy enough to pull the wheels and inspect or replace the wheel cylinders too. These are all safety items that have to work together.

Tom

wesk · Posted: Mon Nov 02, 2009 1:22 pm Post subject:

Two tips on loosening the steel line fittings.

1-Lots of penetrent like PB blaster and let it soak for a day.

2-Use only quality flare nut wrenches that prevent rounding the nuts off.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php


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