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aaronwilmoth80911
Top Member
538 Posts |
 Posted - 10/30/2014 : 1:59:42 PM
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| I'm in a state that requires air brakes on our conventional buses, so hydraulic brakes on conventional buses get confusing with some of the terminology. What is pedal reserve? More specifically, what does it mean to have no pedal reserve with engine running? |
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bwest
Administrator
United States
3820 Posts |
Posted - 10/30/2014 : 2:16:19 PM
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| Not a clue. Is it to do with the aux brake motor? Hyd is all I've worked on for over 20 years and I've never heard that term. lol |
Bryan |
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aaronwilmoth80911
Top Member
538 Posts |
Posted - 10/30/2014 : 2:37:08 PM
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| FMVSS 393.40(b) is what it says it is referring to, but when I looked that up, there is nothing about the reserve. |
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BJ Henderson
Advanced Member
USA
280 Posts |
Posted - 10/30/2014 : 2:45:57 PM
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| They are probably talking about after engine is shut off, so the bus can be stopped in an emergency with power loss. |
CMTT,CMAT,CMBT |
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Crown
Senior Member
89 Posts |
Posted - 10/30/2014 : 10:31:30 PM
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| Sounds like what we have on some Ford Collins buses. With the engine running and moderate amount of leg effort, you can push the brake pedal all the way to the floor. At first it was disconcerting for mechanics and drivers. But low and behold, nearly 20 years and many millions of miles later, it has never been an issue. |
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Hydraulic brake advice
