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HITACHI Regulator: Adjustment

NOTE: Charge relay is adjusted in same manner as voltage regulator.
  1. Disconnect and remove voltage regulator from vehicle. If contact points are roughened, smooth with fine sandpaper. Check and adjust core gap first, then point gap. Yoke gap adjustment may be unnecessary on some models.
  2. Adjust core gap by loosening screws attaching contact set to yoke. Move contact set upward or downward as required. Adjust point gap by loosening screw attaching upper contact. Move upper contact up or down as required to set gap to specification.
  3. Adjust regulated voltage by means of adjusting screw. Turn screw in to increase regulated voltage or out to decrease voltage. When correct voltage adjustment is obtained, secure with lock nut. When adjustment procedure is complete, reinstall regulator and perform on car check.
    Fig 1: Adjustment Points for Charge Relay
    G09319952Courtesy of NOT AVAILABLE
    Fig 2: Adjustment Points for Voltage Regulator
    G09319953Courtesy of NOT AVAILABLE
VOLTAGE REGULATOR SPECIFICATIONS

Regulator Battery Voltage Regulated Voltage Voltage Coil Resistance (Ohms) Yoke Gap In. (mm) Core Gap In. (mm) Point Gap In. (mm)
TLIZ-87 12 13.8-14.8 10.3 (1) .024-.039 (.6-1.0) .012-.016 (.3-.4)
TLIZ-94 12 14.0-15.0 10.3 .035 (.9) .024-.039 (.6-1.0) .012-.016 (.3-.4)
(1) No yoke gap adjustment required.
VOLTAGE RELAY SPECIFICATIONS

Regulator Released Voltage Voltage Coil Resistance (Ohms) Yoke Gap In. (mm) Core Gap In. (mm) Point Gap In. (mm)
TLIZ-87 5 (2) 31.9 (1) .032-.039 (.8-1.0) .016-.024 (.41-.61)
TLIZ-94 8-10 31.9 .035 (.9) .032-.039 (.8-1.0) .016-.024 (.41-.61)
(1) No yoke gap adjustment required.
(2) Measured at "A" terminal.