IHI 25J 28J 30J Compact Excavator Service & Repair Workshop Manual
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Service
Guide
for
SERIAL NUMBERS
255: AH003501 and up
281: AK004001 and up
30J: 01018501 and up
IHI
lshikawaiima Consiruction Machinery Co., Ltd.
PUB.No.1
HYDRAULIC MINI EXCAVATOR
- TABLE OF CONTENTS -
SECTION 1 ................... SPECIFICATIONS
sic~lo~ 2 ................... STRUCTURE FUNCTION
SECTION 3 ................... OPERATION
SECTION 4 ................... MAINTENANCE
SECTION 5 ................... HYDRAULIC COMPONENTS ASSEMBLING
and DISASSEMBLING
SECTION 6 ................... PERFORMANCE STANDARDS
SECTION 7 ................... MAINTENANCE STANDARDS
SECTION 8 ................... TROUBLE SHOOTING
SECTION g ................... OPTIONS
SPECIFICATIONS ~OJ
GENERAL SPECIFICATIONS
Service
for
SERIAL NUMBERS
25J: AH003501 and up
281: AK004001 and up
30J: 01 01 8501 and up
IHI
Ishikaw~ii~a Consf ruc tion Machinery Ca., Ltd.
PUB.No.1
HYDRAULIC MINI EXCAVATOR
- TABLE OF CONTENTS -
SECTION 1 ................... SPECIFICATIONS
~ECT~ON 2 ................... STRUCTURE FUNCTION
SECTION 3 ................... OPERATlON
................... SECTION 4 MAINTENANCE
................... SECTION 5 HYDRAULIC COMPONENTS ASSEMBLING
and DISASSEMBLING
SECTION 6 ................... PERFORMANCE STANDARDS
SECTION 7 ................... MAINTENANCE STANDARDS
SECTION 8 ................... TROUBLE SHOOTING
SECTION g ................... OPTIONS
SECTION 1
TABLE
SPECIFICATIONS
OF CONTENTS
Subject Page
GENERAL SPECIFICATIONS
1
I BASE MACHINE PERFORMENCE
Swing speed
Travel speed
I ENGINE
Gradability I % (deg.) 1 58 (30)
I Engine type
I
Unit
rPm
kmh
1
58 (30)
Engine model
4cycle, water cooled, swirl- chamber,
overhead valve
28.l
9.5
16. 1 2.8
25J
9.5
1.9
30
- I ISUZU 3LB1 1 JSUZU 3LB1 I ISUZU 3 ~ ~ 1
No. of cyl. - bore X storoke
[
mm 1 3 - 77.4 X 79.7 1 3 - 77.4 X 79.7 1 3 - 83.1 x9fl
30J
8.6
2.1 1 3.8
I I
Total piston displecement cm' 1124 1124
_ _ _ _ _
Rated output ps/rpm 23 1 2400 24 / 2400
Max. torpue kgf-mlrpm 7.1 1 1800 7.1 1 1800
[~vera~eground bearing pressure lkgficrn21 0.29 1 030 1 0.29 1 0.30 1 0.29 0.31 1
1496
29 / 2400
9.7 / 1800
1
I WEIGHT
I AMOUNT OF FUEL, LUBRICATING OIL AND COOLANT
Total operation weight / kg
I Fuel
.Canopy Cab
Hydraulic
fluid
Canopy / Cab
2500 / 2635 2300
Canopy I Cab
2750 / 2885 2435
Oil level
Total amountin system
Engine oil
Coolant
4.5
2.5
2.2
5.3
1
P
Max. level / ! 2 4.5
2.5
2.2
5.3
.
Min. level
Engine proper
-
Total amount
40
62
-
6.3
3.5
2.5
5.7
Q
e
Q'
--
40
62
40
62
- -
-
SPECIFICATIONS ~ O J
BUCKET
Number
Weight
of
(kg)
@ :Std. aplicable
0 : Applicable
x : Not a~~licable
Slope bucket
Combinations I
arm I arm I I
500 X 1000
Standard General digging
85
0 I 0 I OPT. (Ditch digging
Long arm
Ditch digging
0 I 0 I OPT. (Ditch digging
0 I x I OFT. 1 Ditch digging
0 1 X I OPT. 1 Slope finishing
-
0
X
OPT'
- - -- - -
Loading
without side cutter
1 OVERALL DIMENSIONS AND WORKING RANGES 1
285
1. OVERALL DIMENSIONS
Unit : mm
2. OFFCET DIGGING WORKING RANCE
-.--..
-.-.-.-.-
- m a - .
Min, swing radius
3. WORKING RANGE 25J / 28J
With Canopy
4. WORKING RANGE 25J / 28J
With Cab
Key
A
B
C
D
E
F
G
Description
Std. of bucket capacity(rnJ)JIS Heaped
Max. diaaina radius
H
1
J
K
L
M
N
"" "
Max. bucket outreach at ground level
Max. digging depth(Not used blade)
Radius of max. digging depth
Max. digging height
Radius of max. digging height
Max. dum~ino heiaht
Radius of max. digging height
Min. dumping height
Radius of min. dumping height
Max. vertical digging depth
Radius of rnax. vertical digging depth
Radius of min. digging ground level
Distance of min. digging ground fixed
25J
Std. arm
0.06ma
4235
2Rl
4110
2420
181 5
3860
2740
271 0
2390
1185
1 535
1700
3115
1390
31 55
Long arm .
4520
Std. arm
0.05m~.07mJ
4325
4205
2520
1815
3910
2830
2760
4410
2730
1815
4020
3010
2870
Long arm
0.05mJ
4520 ---
4405
2730
181 5
4020
3010
2870
2655
875
1 530
1 955
3250
11 85
3450
2475
1085
1530
1800
31 70
1320
2150
-
2655
875
1530
1 975
3250
1185
3450
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This is a comprehensive factory service repair workshop manual for the IHI 25J, 28J, 30J Compact Excavator. It is instantly accessible on your computer, tablet, or smartphone and is an invaluable resource for both professional mechanics and DIY enthusiasts.
The manual provides detailed repair, servicing, and troubleshooting procedures, featuring hundreds of pages with in-depth photos and diagrams. It includes step-by-step instructions, highly detailed exploded diagrams, and pictures to guide you through each task effectively.
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