Name: Hitachi 120-3 class
Brand: Hitachi
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MAINTENANCE

7-11

C. TRANSMISSION (See Page 7-23)

Parts Quantity

Interval (hours)

8 50 100 250 500 1000 2000

1. Pump

Transmission

Oil Level Check 1

Change

ZX180-3, 200-3, 270-3

Class

1.0 L

(1.1 US qt)

ZX330-3 Class

1.4 L

(1.5 US qt)

2. Swing

Reduction

Gear

Oil Level Check 1

Change

ZX120-3 Class

3.2 L

(3.4 US qt)

ZX180-3, 200-3 Class

6.2 L

(1.6 US gal)

ZX270-3 Class (Except

280LC-3, 280LCN-3)

9.1 L

(2.4 US gal)

ZX280LC-3, 280LCN-3

11.7 L

(3.1 US gal)

ZX330-3 Class

17.0 L

(4.5 US gal)

3. Travel

Reduction

Gear

Oil Level Check 2

Change

ZX120-3 Class

4.0 L

(4.2 US qt)

ZX180-3, 200-3 Class

6.8 L

(1.8 US gal)

ZX270-3 Class (Except

280LC-3, 280LCN-3)

7.8 L

(2.1 US gal)

ZX280LC-3, 280LCN-3,

330-3 Class

9.2 L

(2.4 US gal)

D. HYDRAULIC SYSTEM (See Page 7-27)

Parts Quantity

Interval (hours)

8 50 100 250 300 500 1000 1500 2500 5000

1. Check Hydraulic Oil Level 1

2. Change Hydraulic

Oil

ZX120-3 Class

130 L

(34.3 US gal)

✸ ✸ ✸ ✸

ZX180-3 Class

190 L

(50.2 US gal)

✸ ✸ ✸ ✸

ZX210-3,

210LC-3

200 L

(52.8 US gal)

✸ ✸ ✸ ✸

ZX210LCN-3,

240N-3

170 L

(44.9 US gal)

✸ ✸ ✸ ✸

ZX270-3 Class

243 L

(64.2 US gal)

✸ ✸ ✸ ✸

ZX330-3 Class

298 L

(78.7 US gal)

3. Suction Filter Cleaning 1 When changing hydraulic oil

4. Replace Hydraulic Tank Oil Filter 1

✸✸ ✸ ✸

5. Replace Pilot Oil Filter 1

6. Replace Air Breather Element 1

7. Check Hoses and

Lines

for leaks –

for cracks, bend, etc. –

NOTE:

✸

Hydraulic oil changing interval differs according to the kind of hydraulic oil used.

See recommended oil chart.

✸✸

While demolition and logging work.

Brand

Hitachi

Model

120-3 class

Hitachi 120-3 class User Manual

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Questions and Answers:

Hitachi 120-3 class Specifications

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