Line Pressure Test
- Ensure engine and transmission are at normal operating temperature. Check fluid level and add if necessary. Connect appropriate pressure gauge to line pressure test port on transmission with a 90 degree fitting to clear exhaust. See Fig 1 .
- Connect tachometer. Block all 4 wheels and fully apply parking brake. Start engine and idle.
- Apply service brake and place selector lever in "D" position. Check line pressure at idle and record pressure reading. Increase RPM to stall speed and record line pressure reading.
- Repeat test procedure in "L" and "R" positions. Compare all readings to specification. See HYDRAULIC PRESSURE TEST SPECIFICATIONS . If line pressures are not as specified, see HYDRAULIC PRESSURE TEST TROUBLE SHOOTING .
CAUTION:
DO NOT maintain stall speed RPM for more than 5 seconds. Ensure there is at least a one minute pause at idle between tests.