TM 9-2350-261-20-2CAUTIONBattery can get overcharged and explodeif the charging volts exceed 29. Adjustvoltage regulator to 29 volts.N O T EDo not force adjusting screw past stop. Ifregulator cannot be adjusted, replace badregulator.Use insulated cross-tip screw driver #1 toA. Vap-Air Modeladjust voltage.26440001-03(plug removed)I90° and above:27 V50° thru 89°:28 V49° and below:29 V7.8.9.IWith engine operating at 900 to 1100 rpm,turn adjusting screw (1) in regulator (2) untilproper voltage reading is achieved.Install receptacle cap (3).Install access screw (4) on regulator (2).B. Vap-Air Model26440001-04(cover removed)C. Leece-NevilleModel 5027RC(plug removed)D. Leland Model07639-CSV-2183-1(cover removed)E. PrestoliteModel REG-4000(plug removed)F. C. E. NiehoffModel N3019(plug removed)FOLLOW-THROUGH STEPS1. Stop/shutdown engine (see your -10).END OF TASKChange 19-39
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