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4. Inspection and servicing of each part
4-2-2 Reduction of pressure in the oil reservoir
(T218341-079-0E)
When taking apart hydraulic piping or changing hydraulic oil, stop the engine and press on the air breather rubber cap.
Start work after pressure has been completely relieved. When you refill with hydraulic oil, remove the cover from the
return filter.
4-2-3 Extraction of air from the hydraulic pump
(01E0-0318-0E)
If you have replaced hydraulic oil or the hydraulic pump itself or removed the pump suction hose, you must go through
the following air extraction procedure to extract air from the pump casing before starting the engine.
(1) Air extraction procedure
1) Fill the oil reservoir with hydraulic oil to the regulation level.
2) Open the drain ports on the top of the pump.
3)
Pour hydraulic oil in through both ports to fill the pump casing.
4) Tighten both joints and hoses, and run the pump unloaded at engine low speed.
5) Loosen both joints and hoses a little and extract the air from the pump casing.
6)
After confirming that the air is out, tighten both joints and hoses.
・
The pump will be damaged if it is run with air inside the casing. If you have replaced
hydraulic oil or the pump itself or removed the pump suction hose, you must extract air from
the pump casing.
・
Air extraction from the pump casing and hydraulic circuits must always be done with the
pump unloaded at engine low speed. At engine medium speed or more or with the pump under
load, air can enter the pump and damage it.
(01E0-0319-0E)
Содержание REDGZM HD514MR-7
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Страница 9: ... 7 8 Specifications 8 2 General data 01E0 0023 0E ...
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Страница 56: ... 40 2 Part names and terms 2 2 2 Inside the cab 01E0 0050 1E ...
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Страница 58: ... 42 2 Part names and terms 2 2 3 Outside the cab 01E0 0051 1E ...
Страница 148: ... 132 8 Lifting a load 2 HD514MR LC 7 ...
Страница 183: ... 166 2 Inspection and servicing table 1 Part names for inspection and servicing ...
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Страница 200: ... 183 3 Lubrication Lubrication 3 5 Oiling chart 01E0 0293 0E ...
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Страница 277: ... 259 3 Crusher operation Crusher operation 3 Gouging using the cylinder stroke end 4 Rough and harsh crushing ...
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Страница 314: ... 295 295 4 Hydraulic circuit diagram Hydraulic circuit diagram 4 Hydraulic circuit diagram 01EE 0608 0E ...
Страница 315: ... 296 296 5 Electrical circuit diagram 5 Electrical circuit diagram 01EE 0609 0E ...
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Страница 319: ... 300 6 Inspection sheet 6 2 Hydraulic excavator monthly voluntary inspection sheet 01E0 0545 0E ...
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