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AHC Suspension Fluid Bleeding Guide

The document provides instructions for bleeding air from the suspension fluid lines of an active height control (AHC) system. It instructs to fill the reservoir tank with suspension fluid, start the engine in N mode to activate the AHC pump, and then loosen the bleeder plugs on each damping force control actuator one at a time to release air bubbles and emulsified fluid. It emphasizes checking that the AHC pump has stopped and refilling the reservoir to the proper level after completing the bleeding process on all actuators.

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Timothy Martin
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464 views1 page

AHC Suspension Fluid Bleeding Guide

The document provides instructions for bleeding air from the suspension fluid lines of an active height control (AHC) system. It instructs to fill the reservoir tank with suspension fluid, start the engine in N mode to activate the AHC pump, and then loosen the bleeder plugs on each damping force control actuator one at a time to release air bubbles and emulsified fluid. It emphasizes checking that the AHC pump has stopped and refilling the reservoir to the proper level after completing the bleeding process on all actuators.

Uploaded by

Timothy Martin
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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SP–2 SUSPENSION – SUSPENSION FLUID

SUSPENSION FLUID
BLEEDING
HINT:
If any work is done on the AHC system or if air is suspected in
the AHC lines, bleed the system of air.
1. FILL RESERVOIR WITH ACTIVE HEIGHT CONTROL
SUSPENSION FLUID
(a) While the vehicle is stopped, pour the suspension
fluid AHC in the reservoir tank.
Fluid:
Suspension fluid AHC (08886-01805)
NOTICE:
Do not start the engine until the fluid is poured
in the reservoir tank.
2. BLEED ACTIVE HEIGHT CONTROL SUSPENSION
FLUID LINES
(a) Start the engine and push the vehicle height select
switch to select "N" mode.
NOTICE:
When the reservoir tank is empty, or after the
AHC pump & motor is replaced or removed,
starting engine may cause air inflow in the AHC
fluid line. In this condition, the AHC system can
not be operated even if the fluid is poured into
the tank. If this happens, raise the vehicle height
of the front or rear wheel by conducting the
active test and activate the AHC pump & motor
for about 10 seconds (see page SC-15).
(b) After vehicle height adjustment is completed, check
that the AHC pump motor is stopped, then stop the
engine.
(c) Connect the hose to the bleeder plug for either right
or left damping force control actuator.
(d) Loosen the bleeder plug.
CAUTION:
While the fluid is being discharged, the vehicle
height is lowered suddenly.
(e) When the emulsified fluid contacting air is
discharged, retighten the bleeder plug.
Torque: 8.3 N*m (84 kgf*cm, 73 in.*lbf)
C116385 (f) Repeat the 2 previous steps for damping force
SP control actuator on the rear side.
(g) Repeat the 5 previous step for left and right
damping force control actuators alternately.
(h) Start the engine on a level place. Adjust the vehicle
height to N position with the vehicle unloaded.
(i) Check that the fluid level in the reservoir tank is
within the standard range.
NOTICE:
Temperature should be normal (20°C, 68°F)

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