Hitachi ZX350H-3, ZX350LCH-3, ZX350LC-3 Excavator Service Repair Manual
The manual is applicable for the Hitachi ZX350H-3, ZX350LCH-3, ZX350LC-3Excavator Model
Format: PDF
Language: English
Service Manual consists of the following:
For Model ZX350H-3, ZX350LCH-3, ZX350LC-3 as mentioned above:
Service Manual (Troubleshooting) : Vol. No.TT1V7-E-00
Operation Manual : Vol. No.TO1V7-E-00
Workshop Manual : Vol. No.W1V7-E-00
Parts Catalog
| Pump 1 Flow Rate Control Valve | Pump 2 Flow Rate Control Valve | Flow Combiner Valve Control Spool |
| Supplies flow rate control pressure Pi to pump 1 regulator in response to lever stroke when boom (raise/lower), arm (roll-out/in), bucket (roll-out/in), right travel or auxiliary is operated. | Supplies flow rate control pressure Pi to pump 2 regulator in response to lever stroke when boom (raise/lower), arm (roll-out/in), swing (right/left), left travel or auxiliary is operated. | Be shifted by right travel pilot pressure and supplies control pressure to flow combiner valve in control valve. |
| If spool is bound at fully open, even if control lever is in neutral, pump 1 swash angle is tilted to maximum. (When traveling with travel levers held in half stroke, machine mistracks to the left.) If spool is bound at fully open, pump 1 control pressure sensor monitors the maximum pressure. If spool is bound at fully closed, even if control lever is operated, pump 1 swash angle is tilted to minimum. (Right travel is inoperable during single travel operation. Bucket speed becomes very slow.) If spool is bound at fully open, pump 1 control pressure sensor cannot monitor the pump control pressure. (Right travel does not run fast with right track jacked-up.) | If spool is bound at fully open, even if control lever is in neutral, pump 2 swash angle is tilted to maximum. (When traveling with travel levers held in half stroke, machine mistracks to the right.) If spool is bound at fully open, pump 2 control pressure sensor monitors the maximum pressure. If spool is bound at fully closed, even if control lever is operated, pump 2 swash angle is tilted to minimum. (Left travel is inoperable during single travel operation. Swing speed becomes very slow.) If spool is bound at fully open, pump 2 control pressure sensor cannot monitor the pump control pressure. (Left travel does not run fast with left track jacked-up.) | If spool is bound at fully open, when boom, arm, bucket or swing is operated, flow combiner valve is shifted. If spool is bound at fully closed, when combined operation of travel and front/swing is made, machine mistracks to the left. (Left travel speed becomes slow.) |
Hitachi ZAXIS ZX350H-3, ZX350LCH-3, ZX350LC-3 service manual consists of the 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.
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