Complete digital official shop manual contains service, maintenance, and troubleshooting information for the Kobelco SK170-6E, SK170LC-6E, SK170LC-6ES Crawler Excavators. Diagnostic and repair procedures are covered in great detail to repair, maintain, rebuild, refurbish or restore your excavator 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 SK170-6E, SK170LC-6E, SK170LC-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.

“SK170LC-6E (S5YM0002E).pdf”
Kobelco SK170LC-6E Crawler Excavators Shop Manual; 968 pages

“SK170-6E,SK170LC-6ES (S5YM0004E).pdf”
Kobelco SK170-6E, SK170LC-6ES Crawler Excavators Shop Manual; 986 pages

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
...

4.4 OPERATION
(1) Control valve in neutral
The oil delivered by hydraulic pump P1 enters port P1 of the control valve and passes through the travel straight spool (307) and the main passage (51). It then passes through the bypass circuit (52) that passes the right travel bucket and boom circuits and then the P1 bypass cut spool (309) and is brought back to the hydraulic tank via the tank port (T).
The oil delivered by hydraulic pump P2 also goes past the main passage (54), passes through the bypass circuit (55) that goes through the left travel, swing, boom conflux and arm circuits and then the P2 bypass cut spool (309) and is brought back to the hydraulic tank via the tank port (T).
(2) Functions for travel action
1) At independent travel
If travel operation (forward) is performed, the secondary pilot pressure from ports (2) and (4) of the travel pilot valve acts upon ports PBr and PBL of the control valve and moves the right and left travel spools (306).
The pressurized oil delivered by pump (P1) flows to the main passage (51) past the travel straight spool (307), passes between the outer circumference of the right travel spool (306) and the casing and is supplied to the right travel motor B by way of port Br.
In the meantime, the pressurized oil delivered by pump (P2) passes between the outer circumference of the left travel straight spool (306) and the casing, runs to port BL and is supplied to the left travel motor A side, the same way as the pressure oil by pump (P1 ).
Meanwhile, the oil which has returned from the right travel A side and the left travel A side passes between the outer circumference of the left travel spool (306) and the casing and returns to the hydraulic tank via the tank port (T) of the low pressure circuit (D).
At backward travel action (when the secondary pilot pressure acts upon ports PAr and PAL of the control valve), the pressurized oil works the same way as in the forward travel action.
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