Hitachi ZX250LC-5B and ZX250LCN-5B ZAXIS Excavator Manual

The manual is applicable for the Hitachi Excavator Model ZX250LC-5B and ZX250LCN-5B

Format: PDF
Language: English
Service Manual consists of the following:

For Model ZAXIS ZX250LC-5B and ZX250LCN-5B as mentioned above:

Service Manual (Troubleshooting) : Vol. No.TODCA-EN (504 Pages)
Service Manual (Operation) : Vol. No.TTDCA-EN (440 Pages)
Workshop Manual : Vol. No.WDCA-EN (582 Pages)

Circuit Diagram: 12 Pages

SI Units (International System of Units) is use in the manual.

Manual guide composition

Hitachi ZAXIS ZX250LC-5B and ZX250LCN-5B service manual consists of the Operating, Troubleshooting and the Workshop Manual.

• Information included in the Service Manual: Technical information needed for redelivery and delivery, operation and activation of all devices and systems, operational performance tests, and troubleshooting procedures.
• Information included in the Workshop Manual: Technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal / installation and assemble / disassemble procedures.

To avoid injury and damage refer to the service manual and be sure to use appropriate lifting techniques and equipment when lifting heavy parts.

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Starting Circuit (Key Switch: START) Manual Instructions Extract:


1. When key switch (7) is set to START position (6), terminal B is connected to terminals M (8) and ST (9) in key switch (7).
2. Current from terminal M (8) excites battery relay (4) through key switch ON cut relay (10). Current from battery (1) is routed to terminal B of starter (2) and terminal B of starter relay 1 (3) through battery relay (4).
3. In addition, current from terminal M (8) in key switch (7) flows to fuse #17 through key switch ON cut relay (10).
4. Current from fuse #17 flows to GSM (11), monitor controller (13), ECM (15), and MC (16) as a signal indicating that key switch (7) is in ON or START position (6).
5. When ECM (15) receives this signal, ECM (15) turns ECM main relay (14) ON.
6. Current from battery (1) flows to ECM (15) through fuse #8 and ECM main relay (14), and the ECM (15) main power is turned ON.
7. ECM (15) makes the engine starting condition.
8. Current from terminal ST (9) flows to terminal S in starter relay 1 (3) through starter cut relay (5).
9. Current flows to the coil in starter relay 1 (3) and starter relay 1 (3) is turned ON.
10. Therefore, current flows to terminal S in starter (2) from terminal C in starter relay 1 (3).
11. Consequently, the relay in starter (2) is turned ON so that the starter motor rotates.