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BW1625  © 2004 Bendix Commercial Vehicle Systems LLC All rights reserved.  4/2004 Printed in U.S.A.

Содержание LQ-5 BOBTAIL RATIO VALVE

Страница 1: ...LQ 5 bobtail ratio valve is used on the front steering axle of tractor air brake systems to reduce brake applica tion pressure during normal tractor trailer operation It is designed for tractor syste...

Страница 2: ...on the delivery side of the proportioning piston is larger than that on the supply side the delivery side needs less air pressure to apply the same force Therefore after the initial delivery pressure...

Страница 3: ...the delivery line lifts the proportioning piston and inlet exhaust valve away from the exhaust seat in the body Air then flows out the open exhaust passage Air from the actuators exhausts through the...

Страница 4: ...ure There is then a 1 1 ratio between supply and delivery BOBTAIL MODE BRAKE VALVE APPLICATION BALANCE RELEASE When the trailer supply valve is pulled out air in the LQ 5 valve control port flows back...

Страница 5: ...should be replaced rather than repaired Do not attempt repairs requiring machining or welding unless specifically stated and approved by the vehicle and component manufacturer 10 Prior to returning t...

Страница 6: ...Caution The LQ 5 valve may be lightly clamped in a bench vise but overclamping will damage the valve and cause leakage and or malfunction If a vise is used clamp around the supply port and the mountin...

Страница 7: ...her as the spring compresses into the proportioning piston Also make sure the valve is square contacts the seat and doesn t bind 4 Insert the proportioning piston into the small bore of the blend back...

Страница 8: ...8 BW1625 2004 Bendix Commercial Vehicle Systems LLC All rights reserved 4 2004 Printed in U S A...

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