Pump Pressure Check - Acura 3.5 RL Manual

Pump Pressure Check

Check the fluid pressure as follows to determine
whether the trouble is in the pump or gearbox.
NOTE: First check the power steering fluid level and
pump belt tension.
CAUTION: Carefully disconnect the high-pressure hose
so the power steering fluid does not leak on the frame
and other parts.
1. Remove the air cleaner (ACL).
2. Disconnect the outlet hose from the pump outlet fit-
ting, and install the P/S joint adapter (pump) on the
pump outlet.
P/S PRESSURE
GAUGE
07406-0010001
P/S JOINT ADAPTER (HOSE)
07GAK-SE00120
3. Connect the P/S joint adapter (pump) to the power
steering pressure gauge, then connect the outlet
hose to the adapter.
4. Connect the power steering pressure gauge to the
adapter.
5. Open the shut-off valve fully.
6. Open the pressure control valve fully.
P/S JOINT ADAPTER (PUMP)
07GAK-SE00112
7. Start the engine and let it idle.
8. Turn the steering wheel from lock-to-lock several
times to warm the fluid to operating temperature.
9. Measure steady-state fluid pressure while idling
with the shut-off valve fully open. If the pump is in
good condition, the gauge should read less than
2
1500 kPa (15 kgf/cm , 213 psi).
If it reads high, check the feed line or valve body
unit.
10. Close the pressure control valve, then close the shut-
off valve gradually until the pressure gauge needle
is stable. Read the pressure.
11. Immediately open the pressure control valve fully.
CAUTION: Do not keep the pressure control valve
closed more than 5 seconds or the pump could be
damaged by over-heating.
If the pump is in good condition, the gauge should
read at least 7,800 - 8,800 kPa (80 - 90 kgf/cm
- 1,280 psi). A low reading means pump output is
too low for full assist. Repair or replace the pump.
2
, 1,138
P/S PRESSURE GAUGE
07406-0010001