STC Hitachi ZX870 User manual
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STC Coevorden B.V.
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W: www.stcbv.nl
Manual
Operating and Parts Manual
Hitachi ZX870 STC Special
Heavy Duty Triple Boom Excavator
Page 2 of 25
STC Coevorden B.V.
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NL-7742 SX Coevorden
T: +31 (0)524 525 375
F: +31 (0)524 523 560
W: www.stcbv.nl
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
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W: www.stcbv.nl
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
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Manual
SEAT
Drawing number: 1-7363-0
1st PART BOOM
Drawing number: 1-7364-0
Page 5 of 25
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Manual
2nd PART BOOM
Drawing number: 1-7365-0
3rd PART MIDDLE ARM
Drawing number: 1-7366-0
Page 6 of 25
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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
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Manual
TRACK WIDENERS / MACHINE FRAME
Drawing number: 1-7370-0
TRACK WIDENERS / EXTENSION BLOCKS & TRACKS
Drawing number: 1-7371-0
Page 8 of 25
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W: www.stcbv.nl
Manual
Page 9 of 25
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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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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.
Page 11 of 25
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Manual
HYDRAULLIC CONNECTIONS
Key N°. Qty
1 FHS66CFX
Split flange 6000PSI SAE 1-1/2" Steel
12
2 5113-24 Tussenflens 1-1/2" met meetpunt G1/4" 600PSI 6
3 IN24-50x5,0TFVCF F37 Insert 1-1/2" 6
4 F37-624-CFX Flare flange 1-1/2" 6
5HSRS50
Hydraulic steel-clamps
48
6HSRS30
Hydraulic steel-clamps
12
7 EE20X Elastomere Inlay for HSRS30 6
84214 Kogelkraan G1/4" 1
9 STC-0002-06 Terugslagklepblok 6-voudig 6
10 6RHZ42EDMLOSCF Non-return valve 6
11 F37-624-CFX Flare flange 1-1/2" 8
12 IN24-50x5,0TFVCF F37 Insert 1-1/2" 6
13 PFF66GCF
Draadflens SAE1 1/2"-6000psi o-ring
6
14 24HMK4S BSP adapter 1-1/2" - 1-1/2" 6
15 2P808812GFC
Body DN12-8x1/2" BSP
1 Female part Bolted
16 11426-VEP-B-HD Schraubmuffe VEP30HD 1-1/2" 6
Remarks
Description
Part N°.
Page 12 of 25
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Manual
Key N°. Qty
20 5741-24 SAE T-Block 1-1/2" 6000PSI 2
Relief port 1/4" added
21 FHS66CFX
Split flange 6000PSI SAE 1-1/2" Steel
8
22 PFF66GCF
Draadflens SAE1 1/2"-6000psi o-ring
4
23 IN24-50x5,0TFVCF F37 Insert 1-1/2" 4
24 F37-624-CFX Flare flange 1-1/2" 4
25 HSRS50
Hydraulic steel-clamps
16
26 HSRS30
Hydraulic steel-clamps
8
27 EE20X Elastomere Inlay for HSRS30 4
28 STC-0002-06 Terugslagklepblok 6-voudig 1
29 6RHZ42EDMLOSCF Non-return valve 6
30 4214 Kogelkraan G1/4" 1
31 FHS66CFX
Split flange 6000PSI SAE 1-1/2" Steel
8
32 2P808812GMC Body DN12-8x1/2" BSP Stekker 1 Male part
33 11416-VEP-B-HD Schraubstecke VEP30HD 1-1/2" 6
Remarks
Part N°.
Description
Page 13 of 25
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Manual
Key N°. Qty
40 FHS66CFX
Split flange 6000PSI SAE 1-1/2" Steel
8
41 IN24-50x5,0TFVCF F37 Insert 1-1/2" 4
42 F37-624-CFX Flare flange 1-1/2" 4
43 HSRS50
Hydraulic steel-clamps
16
44 HSRS30
Hydraulic steel-clamps
4
45 FHS66CFX
Split flange 6000PSI SAE 1-1/2" Steel
8
46 IN24-50x5,0TFVCF F37 Insert 1-1/2" 4
47 F37-624-CFX Flare flange 1-1/2" 4
Remarks
Part N°.
Description
Page 14 of 25
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Manual
Key N°. Qty
48 HSRS50
Hydraulic steel-clamps
8
49 HSRS30
Hydraulic steel-clamps
6
50 EE20X Elastomere Inlay for HSRS30 6
51 F37-624T-CFX Flare flange 1-1/2" with threat 4
52 IN24-50x5,0TFCF F37 Insert flat 1-1/2" 6
53 FHS66CFX
Split flange 6000PSI SAE 1-1/2" Steel
4
54 F37-624-CFX Flare flange 1-1/2" 2
55 5111-24 SAE L-Block 1-1/2" 6000PSI 1
Remarks
Part N°.
Description
Page 15 of 25
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Manual
LIFTING CHARTS
Measured over front: Without extension
Page 16 of 25
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Manual
Measured over front: With extension
Page 17 of 25
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Manual
Measured over side: With extension
Page 18 of 25
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Manual
Measured over side: With single small extension
Page 19 of 25
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Manual
Measured over side: With small extension and 5 ton counter weight
Page 20 of 25
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Manual
Measured over side: With small extension
