Does a CUCV have power brakes?

[gt1009]

Jut curious, does the m1009 have power brakes? My master cylinder is most likely bad so I need to know.
Thanks,

 

[Recovry4x4]

Yup, called hydroboost!

 

[gt1009]

One more question, DOT 3 or DOT 5? Just opened mine, was almost empty, filled with DOT 3 for the time being, remembered seeing that here.

 

[CCATLETT1984]

ONLY USE DOT 5!!!!!!!!!!!!!!!!!!!!!

never mix them, or it turns to GOO!!!

you will need to bleed your brakes out until its just clean.

 

[acetomatoco]

Yes CUCV have Power Brakes... described in your manuals. It is a hydraulic boost system using the Power Steering pump for pressure...Hard to imagine how your Master Cylinder went dry in such a hurry between daily Motor Stables unless you had a catastrophic failure of the seal in the master, or a brake line rupture or a wheel cyl which blew... Dot 5 was the original fluid...topping off with Dot 3 should be only an emergency get home procedure and the advice from above re flushing is a good one... proper way is with alcohol and compressed air and takes a good while...military had a big writeup on it when trucks were converted from Dot 5 from Dot 3. ACE

 

[gt1009]

This is great... Get to work outside for an hour or two right at the start of the cicada attack. Thanks for the info.

 

[gt1009]

military had a big writeup on it when trucks were converted from Dot 5 from Dot 3. ACE

Does anyone have this write-up? Thanks

 

[CCATLETT1984]

you should be fine just flushing with dot5, just run a quart through the lines and you will be fine. I reccomend purchasing a warning sticker for the master cylinder cap, you can find ones on ebay that say to add only silicone brake fluid. I got one at the aberdeen show for $1

 

[acetomatoco]

The writeup would have been a TB Possible that Portrayal Press is doing a reprint...

 

[Recovry4x4]

Did you check the TM section? You should because it's there. TB 43-0002-87 and here's the link.
http://www.steelsoldiers.com/index.php?module=pagesetter&type=file&func=get&tid=1&fid=file&pid=67

 

[gt1009]

Trust me kenny, I checked for it, but it wouldn't show up on my computer. I was angry like this

Anyone know the jack points on this truck btw? I was thinking under the axle but I didn't know if there were better ones.

 

[Recovry4x4]

Greg, try it again. right click on the link and "Save target as". For some odd reason they won't open from a left click. Jack points are the axles.

 

[gt1009]

Got it, thanks!

 

[kentuckycucv]

Oooops I filled my MC with dot 3.... Whats going to happen now?

 

[HeadWizard]

Re: RE: Does a CUCV have power brakes?

Oooops I filled my MC with dot 3.... Whats going to happen now?

Look at your avitar...filling with DOT 3 will only make it worse.

 

[dependable]

This brings up a question I've had. I've got several cucvs, I recently got a 1028 from GL and it has DOT 5 silicon brake fluid, with a decal on hood and all. The other 4 I have had DOT 3 when I got them. Is it likely that these had DOT 5 at one time? I am familiar with the consequences of mixing the two.

 

[tsmall07]

How can you tell if the truck has dot 5 or 3? I got my truck from a guy who got it from a guy who got it from a guy...... and there is no way I can know if it had been switched or not.

 

[jj]

Yeah, there is a way, really simple. Siphon a small (20cc) amount of brake fluid from your master cylinder. Put it in a small diameter glass or clear plastic container like a test tube. Then mix in a similar amount of DOT 3 fluid that your are sure about. The repair manuals always say " from an unopened container." Then shake vigorously and let settle. If you had DOT 5 in the master cylinder, the two liquids will NOT mix, you will see a clear separation. If you had DOT 3 to start with the mix will be homogenous.

 

[kentuckycucv]

Well I had no Idea.... I think the oil change guys topped off my MC with dot 3. There is no DOT 5 Sticker. Did the military always use DOT 5... The stuff looks dark and murky. What next?

 

[kentuckycucv]

I got all the fluid out of the reseviors put the fluid in 2 separate jars and added dot 3. The main bigger res was very dark grayish, and cloudy the rear resevior was yellow fluid but cloudy. Both jars show a separation of the fluids. Now what??? Do I refill with Dot 3 or do I go find some Dot 5 somewhere and refill with that???? Then Bleed bleed bleed.
Or do I just refill with whatever and keep on truckin????