BENDIX TCH-003-011 User's Manual
Contents
1. Technical Bulletin Bulletin No PRO 03 11 Effective Date 7 5 77 Page 1 of 1 Subject LQ 4 Front Axle Ratio Valve We are pleased to announce the availability of our new LQ 4 Front Axle Ratio Valve which replaces and obsoletes the LQ 3 Notice 7 of FMVSS which became effective 2 26 76 extended stopping distances and permitted vehicle manufacturers to depower front axle brakes and eliminate antilock on the front axles of many vehicles The LQ 4 has been engineered with sufficient capacity to handle chamber sizes up to type 24 and does not require an additional relay valve to meet 121 brake timing requirements The LQ 4 is directly interchangeable with and directly replaces its predecessor the LQ 3 The LQ 4 s mounting flange and size are identical to that of the LQ 3 however porting has been increased from 1 to 3 8 Please use the conversion list below as a reference until catalog page 03 A 3 has been revised Piece number identification appears on the edge of the cover of both the LQ 3 and LQ 4 Conversion List Obsolete New LQ 3 LQ 4 286289 289144 286682 289145 287187 289146 287253 289147 287276 289148 287279 289149 288532 289150 Note Because of recent D O T rulings the LQ 3A is no longer used by OEM Therefore a high capacity valve LQ 4A will not be manufactured at this time Benuly
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