BENDIX TCH-003-011 User Manual

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 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 ¼” 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, th e LQ-3A is no long er us ed by OEM. Therefore, a high capacity valve (LQ-4A) will not be manufactured at this time.
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