WEAK Diesel Brake system Vacuum Pump Teardown Rebuild Overhaul

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Күн бұрын

The diesel engine needs a VACUUM PUMP to provide vacuum to the Hyrdovac or Brake Booster as the engine creates no vacuum in its intake manifold as opposed to common gasoline engines. A contaminated Vacuum pump will also contaminate the oil system of the engine itself
So before I install the surplus engine is I did this procedure to make sure of everything
Others may need the replacement of the internal vanes and the oil seal and O-rings to completely restore a failing vacuum
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Пікірлер: 28

@gvssa Жыл бұрын

Great explanation and recording. Thanks very much 😊

@RebellionTroll Жыл бұрын

Great tutorial! Thanks

@bc5023 7 ай бұрын

Thank you very much very helpfull .....

@montykalon6461 2 жыл бұрын

Great tutorial! Liked & subscribed!

@DavidSanchez-wj5nu Жыл бұрын

Great video 👍🏽

@Don-uz9om 9 ай бұрын

How much vacuum can these vacuum pumps create? Can this be used possibly for creating more crankcase vacuum for boosted engine applications to prevent oil leaks

@shaeythielke6363 2 жыл бұрын

I have to ask, what does the very small air hose nipple from the pump connect to? My truck came used and I must know if this needs to be attached... It is 4d56 Mitsubishi. Thank you

@znulzndn6025 3 жыл бұрын

Nice tutorial man

@adamvet9609 2 жыл бұрын

has it got any return valve to stop engine oil from coming off to the booster in case the one in booster failed ,got one her filled the brake booster with oil , I would assume this happening during engine shutdown as that vacuum on booster will suck any oil in pump if it has not got valve at the outlet where vacuum hose connected to it , can you elaborate in this please

@MrMechanicandy Жыл бұрын

I was looking for vacuum pump that has its own pulley and how to remove pulley and install along part number for the tool To remove it .

@pauldavis8716 Жыл бұрын

Outstanding

@marco76330 Жыл бұрын

Bravo!!!!!

@josephwong3001 3 жыл бұрын

I am at wits end. Ever since the mechanic replaced the alternator on my Mitsubishi Storm I had brake booster problem. At first when engine is cold I experienced intermittent hard brake pedal, and fine when the engine is hot. Now, a month after the alternator replacement similar hard brake pedal occurred intermittently both hot or cold. I approached 3 mechanics so far, none of them able to find the fault. I notice that you emphasized on water contamination in the vacuum pump, what sort of problem if water enter the vacuum pump chamber? Also if the three-outlet orientation is wrong, what might happen? I would be most grateful if you could give me some suggestion what I should look into to solve my present problem. Your video on this alternator/vacuum pump is very educational. Thank you so much.

@josephwong3001 2 жыл бұрын

@John Rider Thank you for your reply. In the end I had my previous alternator replaced, even though I had it less than a month. The new alternator solved all this dangerous intermitten hard brake problem. Since then I learned how to check a faulty vacuum problem without having to remove and dismantle the alternator/vacuum pump from my car. I removed the vacuum hose from the booster and connect a vacuum meter to end of hose. Run the car, if the vacuum reading can reach 0.08MPa, then your vacuum pump is running efficiently. I learned one more thing, even though I cannot have it verified by any experience mechanic, vacuum also aid power steering. Previous faulty alternator, the day I had it installed, I experienced stiff power steering. Power steering returned to normal the moment new alternator/vacuum pump had been installed.

@josephwong3001 2 жыл бұрын

@John Rider Thank you.

@DJ_Aeronautical 2 жыл бұрын

We all know that vacuum will basically "suck" air from brakebooster. But it possible that alternator vacuum will transfer oil to brake booster instead? Already repaplaced brake booster and found out to be flooded with liquid which seems oil unlike the possibility of brake fluid leak to booster

@DIYAllManphKDWzpeedengineering 2 жыл бұрын

I think its possible since theres an oil pressure feed within the vacuum pump lubrication

@josephwong3001 2 жыл бұрын

I am not a mechanic. Oil should not get into your air booster. I believe the oil in the air booster might attack the diaphram material to cause booster failure.

@DIYAllManphKDWzpeedengineering 2 жыл бұрын

@@josephwong3001 Take note "Vaccum pump" = Vaccum...therefore it's impossible for oil to get into the brake booster, considering oil is also regulated thru a small oil hole before it gets inside the Vaccum housing

@josephwong3001 2 жыл бұрын

@@DIYAllManphKDWzpeedengineering You misunderstood me. I should use "cannot" instead of "should not". This is exactly what I meant. I misunderstood you. I thought you meant oil went into your booster.

@heathhill7802 2 жыл бұрын

Currently working on a 96 npr 5.7 ,same pump . Vacuum that this pump makes with the amount of hose and hight of booster,it's unlikely to fill booster with oil . I say unlikely because it would take a couple quarts of oil to suck from the pan . Not saying impossible, but would take many many cycles of shut down . And the weep hole would have to be plugged for you to not see residual oil leaking after the absence of Vacuum.On the oil pressure side ,that would have to overcome the vains and vacuum "bar" of the working line. If trace amounts are visible in the booster, age would have to be accompanied. If the booster filled then a possibility of the oil return at the vacuum pump would be blocked.i would think your then looking at a pcv valve gone bad as well or a really dirty engine .I am referring to the GM 5.7 gas job .I cant speak of the diesel engine Good thing to look at now that i think of it .Surely a good question though. Reminds me of some of the turbos sucking engine oil out when seals started to go . Same concept but bigger pipes and if you are driving down the road at night when the seal blows out its too late . Turbos will drain a pan in a matter of minutes. You don't know it till you start to here that ticking!