How to video to replace the power brake hydrobooster for a Humvee, M998, Hummer H1. Part number HUM 5582538 Hydro Booster Brake AO 01-179-7590 From MacMotors
I put a new power steering pump in I did the procedure of bleeding it then I noticed the hydro booster was acting funny but the reservoir kept getting air I’ll check under the dash if air maybe getting into it. I checked all the lines I cleaned everything up see if air was getting sucked in somewhere thanks for the video
This looks like the exact same hydro boost used on my 1978 Olds Cutlas diesel. Back in 1989 bought a new one for $125. Power steering pump took a crap and took out both power steering box an hydro boost for the brakes. Is there any type of output filter that can be placed on the out port of the pump? Experience has taught me to replace the master cylinder at the same time. I do recall that the hydro boost can be sent in for a rebuild. An ounce of prevention can save a pound of cure…….The rule is called Murphys Law, what can go wrong will go wrong.
It might be the same part. Would have been nice to save some money on the replacement. A filter? I am sure it is possible as they make them for auto transmissions for the same reason.
@@tduncan9938 I replaced my pump as well early on for leaking. Coming and going can be air or a slipping belt. Or could be a failure of the booster. Does it make any odd noise? Or just go stiff pedal? Stiff hard to push pedal is when the unit stops boosting. The accumulator on the side has a short burst of reserve pressure when the engine is off.
May I ask why you need to change the hydraulic booster hmmwv ? My hmmwv m1123 the break is very stiff and not even trigger the break light ! Is that you have the same problem like my ?
I put a new power steering pump in I did the procedure of bleeding it then I noticed the hydro booster was acting funny but the reservoir kept getting air I’ll check under the dash if air maybe getting into it. I checked all the lines I cleaned everything up see if air was getting sucked in somewhere thanks for the video
Good luck. When the brakes and steering work well they are amazing!!!
This looks like the exact same hydro boost used on my 1978 Olds Cutlas diesel. Back in 1989 bought a new one for $125. Power steering pump took a crap and took out both power steering box an hydro boost for the brakes. Is there any type of output filter that can be placed on the out port of the pump? Experience has taught me to replace the master cylinder at the same time. I do recall that the hydro boost can be sent in for a rebuild. An ounce of prevention can save a pound of cure…….The rule is called Murphys Law, what can go wrong will go wrong.
It might be the same part. Would have been nice to save some money on the replacement. A filter? I am sure it is possible as they make them for auto transmissions for the same reason.
Hey nice video!! Before you replace the hydraulic booster. What was it doing? Thanks
It was leaking into the interior side of the firewall.
@@McSpeedAlaskanAdventures ok thanks!! Mines acting like it comes and goes. I wonder if that’s the problem with the power steering
I put on a brand new power steering pump didn’t fix it
@@tduncan9938
I replaced my pump as well early on for leaking. Coming and going can be air or a slipping belt. Or could be a failure of the booster. Does it make any odd noise? Or just go stiff pedal? Stiff hard to push pedal is when the unit stops boosting. The accumulator on the side has a short burst of reserve pressure when the engine is off.
@@McSpeedAlaskanAdventures and the brakes act the same way
May I ask why you need to change the hydraulic booster hmmwv ? My hmmwv m1123 the break is very stiff and not even trigger the break light ! Is that you have the same problem like my ?
It was leaking. It dripped into the floor and was making an odor when when the fluid was hot and leaking. It otherwise stopped perfectly fine.
i am having same issue, did you work yours out?