STC Hitachi ZX870 User manual

Page 1 of 25
STC Coevorden B.V.
Vosmatenweg 3
NL-7742 SX Coevorden
T: [phone]
F: [phone]
W: www.stcbv.nl
E: [email protected]
Manual
Operating and Parts Manual
Hitachi ZX870 STC Special
Heavy Duty Triple Boom Excavator

Page 2 of 25
STC Coevorden B.V.
Vosmatenweg 3
NL-7742 SX Coevorden
T: [phone]
F: [phone]
W: www.stcbv.nl
E: [email protected]
Manual
CONTENTS
page 2 Contents
page 3 Foreword
page 4 Hitachi ZX870 Seat
Hitachi ZX870 1st part Boom
page 5 Hitachi ZX870 2nd part Boom
Hitachi ZX870 3rd part Middle arm
page 6 Hitachi ZX870 4th part Stick en Stone-carriage
Hitachi ZX870 Quick coupler CW70
Hitachi ZX870 Backhoe
page 7 Hitachi ZX870 Removable Counter Weight frame
Hitachi ZX870 Track wideners / Machine frame
Hitachi ZX870 Track wideners / Extension blocks & Tracks
page 9 Boom connections
page 11 Hydraulic connections
page 15 Lifting charts
page 24 Maintenance and Repair

Page 3 of 25
STC Coevorden B.V.
Vosmatenweg 3
NL-7742 SX Coevorden
T: [phone]
F: [phone]
W: www.stcbv.nl
E: [email protected]
Manual
FOREWORD
Recently, we supplied a STC BV Heavy Duty Triple Boom Excavator. Compliance with the rules in this use and
maintenance manual will contribute to a long and trouble-free use of this STC Special. We recommend you to
read this manual carefully prior to commissioning or maintenance of machine.
This guide is an addition to the instruction manual of your basic machine on which the STC BV Heavy Duty
Triple boom Excavator is mounted. Since this guide refers only to the use and maintenance of the equipment
supplied by us, we want to recommend in addition carefully read the instruction and maintenance regulations
of your basic machine.
Read this manual carefully before you take the machine in operation!
Please note all safety instructions given.
The machine has been delivered under “Metaalunie-conditions”; please refer to these conditions in case of
issues like liability, guarantee, intellectual property, a.s.o. (on request we will send the text of the conditions to
you).

Page 4 of 25
STC Coevorden B.V.
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NL-7742 SX Coevorden
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F: [phone]
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E: [email protected]
Manual
SEAT
Drawing number: 1-7363-0
1st PART BOOM
Drawing number: 1-7364-0

Page 5 of 25
STC Coevorden B.V.
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E: [email protected]
Manual
2nd PART BOOM
Drawing number: 1-7365-0
3rd PART MIDDLE ARM
Drawing number: 1-7366-0

Page 6 of 25
STC Coevorden B.V.
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NL-7742 SX Coevorden
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F: [phone]
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E: [email protected]
Manual
4th PART STICK AND STONE-CARRIAGE
Original Hitachi stick and stone carriage used. Equipped with Quick coupler CW70
BACKHOE
Drawing number: 1-7369-0
REMOVABLE COUNTER WEIGHT FRAME
Drawing number: 1-7131-0

Page 7 of 25
STC Coevorden B.V.
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F: [phone]
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E: [email protected]
Manual
TRACK WIDENERS / MACHINE FRAME
Drawing number: 1-7370-0
TRACK WIDENERS / EXTENSION BLOCKS & TRACKS
Drawing number: 1-7371-0

Page 8 of 25
STC Coevorden B.V.
Vosmatenweg 3
NL-7742 SX Coevorden
T: [phone]
F: [phone]
W: www.stcbv.nl
E: [email protected]
Manual

Page 9 of 25
STC Coevorden B.V.
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NL-7742 SX Coevorden
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F: [phone]
W: www.stcbv.nl
E: [email protected]
Manual
BOOM CONNECTIONS
Support frame
B
E
F
G
H
J
L
N
O
P
K
A
C
D
I
M

Page 10 of 25
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F: [phone]
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E: [email protected]
Manual
Turningpoint A 2x Pin nr. 1-7363-032 (Ø200)
2x Bearing ø230xø200 L= 240
2x Seal ø230xø200 d=10
2x Pin nr. 1-7363-035 (Ø180)Turningpoint B
Turningpoint C
2x Inpin Cylinder 1-7364-100 ø160 L= 818Coupling point D
Turningpoint H
Turningpoint E 2x Orig.pen nr.8100947 (Ø130)
1x Orig.pin nr.8100948 (Ø140)
4x Bush nr. 1-7364-052 ø160 L= 150
Support frame 1x Orig.pin nr.8100946 (Ø170)
2x Orig.pin nr.8101379 (Ø130)
2x Pin nr. 1-7363-036 (Ø150)
2x Bearing ø200xø180 L= 200
2x Seal ø200xø180 d=10
Cylinder turningpoint
2x Pin nr. 1-7363-035 (Ø180)
2x Lagerbus ø200xø180 L= 200
2x Seal ø200xø180 d=10
Cylinder turningpoint
4x Bush nr. 1-7364-051 ø160 L= 52,5
2x Pin nr. 1-7144-025 (Ø150)Turningpoint F
2x Original bearing nr. 3060122 (ø175xø150 L= 130)
4x Original seal nr. 4251754 (ø175xø150 d= 10)
Cylinder turningpoint
Turningpoint G 2x Orig.pin nr.8100947 (Ø130)
Cylinder turningpoint
Turningpoint I
Turningpoint J
Turningpoint K
Turningpoint L
Turningpoint M
Turningpoint N
Turningpoint O
Turningpoint P
Original Hitachi parts.