Vacumm required for brake booster toyota land cruiser 1991 diesel

25 US gallons

if the hose is about 1/2 inch and about afoot long and has oil inside of it probably is an oil return line back to the sump. If it is clean inside it will go to a item requiring vacuum like a governor or a brake booster.

Probably there is a leak in the hydraulic brake line hoses connecting the master and the wheel cylinder hose. Also get the brakes bleeded to remove any air the system. also get the check valve of the brake booster checked and the vacuum hose.

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If your power steering is whining you may just be low on power sterring fluid. I would check that first. If that is good your power steering pump may be on its way out.

There is a power brake booster in your system, but that should not affect if your brakes feel "mushy". I would look at the master cylinder, you probably need a new master cylinder they have a tendency to leak fluid past the seals as they age giving your pedal a mushy feeling. I woould also check your brake lines on each wheel to see if one might be leaking, this will give you a mushy feel as well. I doubt that is the case if you aren't loosing fluid however.

try ebay.....

You are correct, check the booster, the master cylinder is bolted to the booster, check the vacuum line first if good replace the booster.

Try http://www.toyota.com

Make enquiries from them, they'll send you a pdf if you request for 1.

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Don't try it yourself. Consult the Authorized Serviceman instead. Brake Impairment maybe Hazardous.

you need a brake booster as far as abs light you need to to put tester on system and find out what code it has in it before i can diag you have to seprate prolbems