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09-27-2017, 12:53 AM
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#1
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Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 27
THOR #1281
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Brake fluid
What would cause brake fluid on the floor under brake pedal?
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09-27-2017, 01:52 AM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 32A
State: Florida
Posts: 1,797
THOR #2829
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Quote:
Originally Posted by rottendan
What would cause brake fluid on the floor under brake pedal?
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Nothing good - but would also be surprised to see that... as I expect a mechanical connection - and not hydraulic - from the pedal to the master cylinder.
You didn't say what rig you have.
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Greg
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
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09-27-2017, 01:59 AM
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#3
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Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 27
THOR #1281
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Ace 30.1 on a f53
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09-27-2017, 02:11 AM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 32A
State: Florida
Posts: 1,797
THOR #2829
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Quote:
Originally Posted by rottendan
Ace 30.1 on a f53
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Are you sure its brake fluid? On the F-53, there aren't any hydraulic brake lines in the passenger compartment.
The master cylinder is just the other side of the firewall if I recall without walking outside to look - certainly check the lines in/out for leaks - and the fluid level.
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Greg
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
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09-27-2017, 02:25 AM
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#5
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Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 27
THOR #1281
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Can't be sure what it is. After a couple of hours drive a small puddle of thin oily substance that looks pinkish is on the rubber mat under the brake pedal
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09-27-2017, 02:27 AM
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#6
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Senior Member
Brand: Jayco
Model: Alante
State: West Virginia
Posts: 165
THOR #5597
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If the cups in the master cylinder are leaking, brake fluid can travel along the push rod and enter the passenger compartment. The dust boot on the push rod usually keeps any fluid out, but I have seen it come through.
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09-27-2017, 02:35 AM
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#7
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Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 27
THOR #1281
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Thanks. Is that a rebuild or replace?
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09-27-2017, 02:51 AM
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#8
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Senior Member
Brand: Jayco
Model: Alante
State: West Virginia
Posts: 165
THOR #5597
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It can be either, the fastest way would be get either a new or rebuilt unit and switch them out. If you are handy or know a good mechanic, they can be rebuilt, although most replace the cylinder.
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09-27-2017, 02:53 AM
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#9
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Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 27
THOR #1281
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Thanks
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09-27-2017, 03:22 AM
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#10
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds
State: Ontario
Posts: 251
THOR #9081
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You said it was pinkish. Could be orange-red antifreeze (coolant).
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2018 Four Winds 31Y
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09-27-2017, 03:45 AM
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#11
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Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 27
THOR #1281
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I thought that too but temp never went up and it doesn't seem to leak any more after I park
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09-27-2017, 04:16 AM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds
State: Ontario
Posts: 251
THOR #9081
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If its a small leak you probably wouldn't see a temp change until you loose quite a bit of coolant. No leak after parking is probably because there is no longer any pressure.
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2018 Four Winds 31Y
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09-27-2017, 01:10 PM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: 29h outlaw
State: New Jersey
Posts: 241
THOR #5248
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It's probably power steering fluid. Your hydro boost seal is leaking. That's where the brake pedal rod is connected to.
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09-27-2017, 03:56 PM
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#14
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 32A
State: Florida
Posts: 1,797
THOR #2829
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So seems the first thing is identifying the fluid... before you start replacing parts.
Brake fluid is typically clear in what I have used - but there are many different varieties now... I haven't cracked open the DOT 5 LV fluid my rig calls for yet - but have a bottle on board.
A leaking master cylinder can typically be noticed by pressing hard on the brake pedal while stopped... The pedal will stop at some point - then slowly start to descend again as it loses pressure. In bad cases the pedal will go to the floor.
Eventually you will see the loss of fluid in the reservoir as well.
Power steering fluid you may see the leak around the pump - and again fluid level will show eventually...
Antifreeze is many different colors depending on type used... This would run into the passenger compartment through the heater core. Usually has a 'sweet' smell associated with it - I wouldn't normally describe as oily though. Be sure to keep any pets away from this.
Once we can narrow down the fluid and its source - can determine what to replace.
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Greg
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
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