Subaru XT 1988 Service Manual page 811

4-1
SUSPENSION
INSPECTION
A 1) Air leaks from air pipe above strut mount
L4·174
Fig. 77
Check air pipe and joints (shown by arrow) for air leaks. Soap
water or SUBARU CRC (004301003) may be used, but no
soap water must be applied to ball bearing inside the strut
mount.
A2) Air leakage from air line
The following special service tools are available:
• 3-WAY JOINT ASSY (926940000) consists of:
(1) 3-WAY JOINT . . . . . . . . 1
(2) AIR PIPE . . . . . . . . . . . 2 (3 sets)
Use a commercial gauge manifold.
1) Connect a pressure gauge to the right front solenoid valve
(for example). See Fig. 79.
2) Remove the left front mudguard.
3) Ground the air charge solenoid valve and increase solenoid
valve pressure to 5 to 6 atm.
4) Leave the solenoid valve unattended for 10 minutes. Then
check for a pressure drop. If the pressure drop does not exceed
0.5 atm., the solenoid valve is functioning properly.
5) Method of connecting pressure gauge (ex. 1)
FL
Fig.
78
-(;:{ Pressu re gauge
3·way joint
L4·1303
6) If the pressure drop exceeded 0.5 atm. [in step 4) above),
go to step 7) below.
7) Disconnect one of the air lines connected to the struts at
the drier. In its place, connect a pressure gauge as shown in
figure below.
8) Method of connecting pressure gauge (ex. 2)
• Using the REMOVER, disconnect the air line leading to the
air suspension ASSY at the drier outlet.
• Connect the gauge manifold and the 3-WAY JOINT as a
unit between the drier outlet and the disconnected end of
the air pipe.
FL FR
RL
Pressure gauge &
3-way joint &
blind plug
(Blind plug)
L4-1304
• Using the REMOVER, disconnect the air pipe leading to Fig. 79
the compressor at the right front solenoid valve.
• Connect the gauge manifold and the 3-W A Y JO I NT as a
unit between the solenoid valve and the disconnected end
of the air pipe.
54
9) Repeat steps 3) and 4) above.
10) If check results are O.K. repeat steps 7) and 8).
11) Repeat steps 7) through 10) to check the remaining struts.
If any particular strut does not show a pressure drop, the
affected air line is leaking.