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| | | | Joined: Dec 2009 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2009 Posts: 48 | I went to a buddies house today that has several 67-72 body style school buses. I went to get the power steering off for my 68 2 ton, and noticed it had two of them had a dual master cylinder on them, and a different booster. Will these work on my truck, and would they be better than my single cylinder? | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy pipeliner78, the short answer is yes you could swap those over onto your truck. Are they the vacuum boosted type or are they Hydraboost [need a power steering pump to provide the power]? The swap would not be all that simple, but it is doable. | | | | | Joined: Dec 2009 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2009 Posts: 48 | They are vacuum boosted, would this be better than what I have know? | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy pipeliner78, the whole reason we went to a dual system was for safety reasons, if one system failed, the other system was there for backup. Most people feel the dual system is "better" for that reason, and I would never argue with a safety improvement. That being said I don't recall a lot of news reports of accidents do to total brake failure. If you decide to retrofit your truck with one of the dual systems, make sure you confirm what year the equipment is off of, that way you will know how to order parts for it if needed. Take as much of the system as you can tees, lines, valves, even the vacuum lines, you can use this stuff for patterns if nothing else, hope that helps. | | | | | Joined: Dec 2009 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2009 Posts: 48 | That does I never thought of one system backing up the other. Several years ago the line going for the master cylinder to the frame blew out on my brother and he went through a neighbors field. Not Fun.. | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Double check on the school bus to see if the brake system is compatible with your truck before swapping stuff around...
I don't know the details or if it makes a difference, but I have noticed on many older school busses that they have a dual circuit MC...
But the different part is they have two wheel cylinders per wheel (both on front and rear) and two brake lines running to each wheel. I can imagine that the dual system is setup as a complete redundant system. Probably one half the MC works one wheel cylinder in every wheel, and the other half the other wheel cylinder in every wheel. Unlike the front and rear split dual system we're accustomed to.
Again, the MC and booster might be OK to swap and use as a front and rear dual system, but do some thinking and checking to be sure it'll work like you think.
Grigg | | | | | Joined: Dec 2009 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2009 Posts: 48 | Thanks grigg i'll check that out. | | |
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