Kobelco SK230-6E, SK230LC-6E, SK235SR, SK235SR-1E, SK235SRLC, SK235SRLC-1E, SK235SRNLC-1E, SK250-6E, SK250-6ES, SK250LC-6E, SK250LC-6ES, SK250NLC-6E, SK250NLC-6ES Workshop Repair & Service Manual
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Complete digital official shop manual contains service, maintenance, and troubleshooting information for the Kobelco SK230-6E, SK230LC-6E, SK235SR, SK235SR-1E, SK235SRLC, SK235SRLC-1E, SK235SRNLC-1E, SK250-6E, SK250-6ES, SK250LC-6E, SK250LC-6ES, SK250NLC-6E, SK250NLC-6ES Crawler Excavators. Diagnostic and repair procedures are covered in great detail to repair, maintain, rebuild, refurbish or restore your excavators like a professional mechanic in local service/repair workshop. This cost-effective quality manual is 100% complete and intact as should be without any missing pages. It is the same factory shop manual used by dealers that guaranteed to be fully functional to save your precious time.
This manual for Kobelco SK230-6E, SK230LC-6E, SK235SR, SK235SR-1E, SK235SRLC, SK235SRLC-1E, SK235SRNLC-1E, SK250-6E, SK250-6ES, SK250LC-6E, SK250LC-6ES, SK250NLC-6E, SK250NLC-6ES Crawler Excavators is divided into different sections. Each section covers a specific component or system and, in addition to the standard service procedures, includes disassembling, inspecting, and assembling instructions. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. It is in the cross-platform PDF document format so that it works like a charm on all kinds of devices. You do not need to be skilled with a computer to use the manual.
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EXCERPT:
INDEX
1 SPECIFICATIONS SECTION
2 MAINTENANCE SECTION
3 SYSTEM SECTION
4 DISASSEMBLY SECTION
5 TROUBLESHOOTING
6 ENGINE SECTION
7 INSTALLATION PROCEDURES FOR OPTIONAL ATTACHMENT
...
7. HYDRAULIC TANK
7.1 PREPARATION FOR REMOVAL
(1) Remove panel assy (4 ), guard (12) and other guards necessary to remove the hydraulic oil
tank. (Refer to 4. GUARDS.)
(2) Bleeding internal air of tank
Press the rubber cap by your finger tip to bleed off the inside air.
A Keep pressing until the hissing stops.
(3) Remove cover (A1-3).
1) Remove six capscrews (A1-6) M10 X 20.
2) Remove cover (A 1-3).
~:17mm
3) Remove suction strainer (A2).
(4) Remove cover (A1-4).
1) Remove six capscrews (A1-6) M10 X 20.
~: 19mm
2) Remove cover (A 1-4 ).
3) Remove filter element (B6-1 ).
(5) Turn the handle of element assy. (B), and disassemble the removed filter element (B6-1 ).
Disassemble parts : (B), (C), (D), (E), (F)
(6) Draining hydraulic oil
Place pump in tank and draw up hydraulic oil.
Capacity of tank: 156 L (41 gal)
7.2 REMOVAL
(1) Draw out the suction hose (3)
1) Remove two clips (13) of the tank side.
2) Pulling out hose (3).
C3 : Flat-blade screwdriver
(2) Disconnecting the main pipe return hose
1) Remove coupling (10) and separate tube (1) and (3).
~:13mm
2) Remove drain hose (6) of pump
~:36mm
3) Remove drain hose (25) of swing motor
~:27mm
(3) Disconnecting pilot return hose
1) Remove pilot hose (A?).
~:19,22mm
2) Remove pilot hose (C16).
~: 19,22 mm
3) Remove pilot hose (C20).
~:19,22mm
(4) Remove drain hose (7) of solenoid valve
~: 19,22mm
(5) Remove in-line filter assy and pump drain piping
1) Remove two capscrews (A 15) M6 X 60 and inline filter assy (A 17) .
~:: 10 mm
2) Remove pump drain hose (A3).
~: 19,22 mm
(6) Remove hydraulic tank attaching bolt (See Fig. 7-4)
Remove four capscrews (8 1) M 16 X 40, and a shim (83).
~:: 24 mm
A Record the shim locations.
(7) Slinging hydraulic oil tank
Place a wire sling, using the lifting plate on top of the tank.
Tank weight: Approx: 150 kg (331 lbs)
7.3 INSTALLATION
(1) Cleaning hydraulic oil tank
(2) Cleaning suction hose
(3) Cleaning mount of tank.
Installing is done in the reverse order of removing.
(4) Install four mounting capscrews (81) M16 X 40 with Loctite #262. (See Fig. 7-4)
~: 24mm
Tightening torque : 22 kgf·m (160 lbf·ft)
A If the clearance (gap) between the tank mount and the frame is more than 1 mm (0.04 in), adjust it with a 1 mm (0.04 in) shim (83) and fasten them together.
(5) Connection of suction hose (3)
1) Apply PERMATEX on pipe side of hose connection and insert it.
2) Put the hose with clip (13).
Tightening torque : 0.55 kgf·m (4.0 lbHt)
(6) Assembling return element
Assemble filter element by the use of element kit (86-2). (See Fig. 7-3, 7-9)
1. Two elements (D) are used as one set.
2. Replace 0 ring (C) and packing (F) with new ones respectively
(7) Installing return element (86-1)
(8) Installing suction strainer (A2)
(9) Tighten caps crews (A 1-6) M 10 X 20 that attach tank covers (A1-3), (A1-4) .
• : 17mm
Tightening torque: 4.7 kgf-m (160 lbf·ft)
A Replace 0-ring fitted on the back side of tank cover (A1-4) with new one.
...