Tow Hitch Manifold Service (Tow Hitch Kit)
1.
removing any of the solenoid valves.
Make sure the manifold isthoroughly cleaned before
7
60
(6.8
in--lb
N--m)
2.
valve. Slide coil from valve.
Remove nut that secures solenoid coil to solenoid
6
8
3
IMPORTANT: Use care when handling the hydraulic
valve. Slight bending or distortion of the stem tube
can cause binding and malfunction.
8
25
ft--lb
3.
Note correct location of sealing and backup rings. Re-
moveanddiscardsealingandbackupringsfromvalves.
Using a deep socket, remove valves from manifold.
(33.9 N--m)
1
4.
valves for damage to the sealing surfaces, damaged
threads and contamination.
Visually inspect the manifold port and removed
25 ft--lb
UP
(33.9
N--m)
5
A. Contamination may cause valve to stick or hang
up.Contaminationcanbecomelodgedinsmallvalve
orifices or seal areas causing valve malfunction.
B. If valve sealing surfaces appear pitted or dam-
aged, the hydraulic system may be overheating or
there may be water in the system.
4
8
2
CAUTION
25
ft--lb
(33.9
N--m)
60
(6.8
in--lb
N--m)
Use eye protection such as goggles when using
compressed air for cartridge valve cleaning.
8
7
5.
Clean valves by submerging valve in clean mineral
6
spirits toflush outcontamination. Particles asfine astal-
cum powder can affecttheoperation ofthevalve. Beex-
tremely careful not to damage cartridge. Use
compressed air for cleaning.
Figure 25
1.
2.
3.
4.
Solenoid valve S1
Solenoid valve S2
Solenoid valve S3
Solenoid valve S4
5.
6.
7.
8.
Tow hitch manifold
Nut
Nut
Solenoid coil
6.
Lubricate new valve seal kit components with clean
hydraulic oilandinstallonvalves.Thesealing andback-
up rings must be arranged properly on the valves for
proper operation and sealing.
7.
Thread valves carefully into correct manifold port.
The valves should go in easily without binding. Using a
deep socket, torque hydraulic valves to 25 ft--lb (33.9
N--m).
8.
valve. Secure coil with nut. Torque nut 60 in--lb (6.8
N--m).
If solenoid coil was removed, slide coil onto solenoid
Hydraulic System
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|---|---|
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