Solenoid Valve (Fig. 58)
1.Make sure the manifold is clean before removing the spool valve (8).
2.Remove the spool valve (8):
A.Remove the nut (11) from the spool valve (8).
B.Remove the solenoid coil (10) and both O±rings
(9).
Note: Use care when handling the spool valve. slight bending or distortion of the stem tube can cause binding and malfunction.
C. Remove spool valve (8) with a deep socket wrench. Remove seal kit (7).
3.Visually inspect the port in the manifold (22) for damage to the sealing surfaces, damaged threads, and contamination.
4.Visually inspect spool valve for damaged sealing surfaces and contamination.
A.Contamination may cause valves to stick or hang up. Contamination can become lodged in small valve orifices or seal areas causing malfunc- tion.
B.If spool valve (8) sealing surfaces appear pitted or damaged, the hydraulic system may be overheat- ing or there may be water in the system.
CAUTION
Use eye protection such as goggles when using compressed air
5.Clean spool valve (8) using clean mineral spirits. Submerge valve in clean mineral spirits to flush out con- tamination. Use a probe to push the internal spool in and out 20 to 30 times to flush out contamination. Particles as fine as talcum powder can affect the operation of high pressure hydraulic valves. Use compressed air for cleaning.
6.Reinstall the spool valve (8):
A.Lubricate new O±ring and backup ring of seal kit
(7) with clean hydraulic oil and install. The O±ring and backup ring must be arranged properly on the spool valve (8) for proper operation and sealing.
B.Thread spool valve (8) carefully into port (S1). The valve should go in easily without binding.
Note: Use care when handling the spool valve (8). slight bending or distortion of the stem tube can cause binding and malfunction.
C.Torque spool valve (8) using a deep socket to 35 ft±lb (4.8 kg±m).
D.Make sure a new O±ring (9) is at each end of the solenoid coil (10). install solenoid coil to the spool valve (8). Apply ºLoctite 242º or equivalent to the threads of the spool valve: torque nut (11) to 15 in±lb (17 kg±cm).
E.If problems still exit, remove valve and clean again or replace valve.
Cartridge (Logic and Relief) Valves (Fig. 58)
1. | Make sure the manifold is clean before removing |
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the cartridge valve (1 or 14) and seal kit (2 or 7). |
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2. | Remove the cartridge valve (1 or 14). |
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3. | Visually inspect the port in the manifold (22) for |
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damage to the sealing surfaces, damaged threads, and |
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contamination. |
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4. | Visually inspect cartridge valve (1 or 14) for dam- |
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aged sealing surfaces and contamination. |
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Hydraulic System | ||||
| A. Contamination may cause valves to stick or | |||
|
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| hang up. Contamination can become lodged in |
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| small valve orifices or seal areas causing malfunc- |
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| tion. |
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| B. If sealing surfaces appear pitted or damaged, |
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|
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| the hydraulic system may be overheating or there |
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| may be water in the system. |
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|
|
|
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CAUTION
Use eye protection such as goggles when using compressed air
5.Clean cartridge valve (1 of 14) using clean mineral spirits. Submerge valve in clean mineral spirits to flush out contamination. Particles as fine as talcum powder can affect the operation of high pressure hydraulic valves. Use compressed air for cleaning.
6.Reinstall the cartridge valve (1 or 14):
A. Lubricate new O±ring and backup ring of seal kit
(7) with clean hydraulic oil and install. The O±ring and backup ring must be arranged properly on the cartridge valve (1 or 14) for proper operation and sealing.
Reelmaster 2300±D/2600±D | Page 4 ± 65 | Hydraulic System |
