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Home >> Isuzu >> 1988 >> Trooper II Base, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Overhaul - Aw30-80LE >> Testing >> Time Lag Test >> Test Procedure
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Test Procedure

  1. Object of test is to check time elapse or lag before shock can be felt when gear selector is shifted with engine at idle speed. Engine and transmission must be at normal operating temperature. Allow one minute interval between tests. Perform time measurements 3 times and calculate average value.
  2. Apply parking brake. Place transfer gear shift in "H2". Start engine. Check idling speed in "N" range (A/C off). Idle speed should be 850-950 RPM.
  3. Using stop watch, measure time until engagement shock is felt when lever is shifted from "N" to "D". Time lag should be less than 1.2 seconds. Use same procedure to test time lag when gear selector is moved from "N" to "R" range. Time lag should be less than 1.5 seconds.
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