Complete factory shop manual including electrical wiring diagrams for Komatsu WB70A-1, WB91R-2, WB91R-5, WB93R-2, WB93R-5, WB93R-5E0, WB93S-5E0, WB93S-5, WB95R, WB97R-2, WB97S-2, WB97R-5, WB97R-5E0, WB97S-5, WB97S-5E0, WB98A-2 Backhoe-Loader. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page to save your precious time.

This Komatsu WB70A-1, WB91R-2, WB91R-5, WB93R-2, WB93R-5, WB93R-5E0, WB93S-5E0, WB93S-5, WB95R, WB97R-2, WB97S-2, WB97R-5, WB97R-5E0, WB97S-5, WB97S-5E0, WB98A-2 Backhoe-Loader repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. 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. The printer-ready PDF documents work like a charm on all kinds of devices.

FILE LIST:
EEAM005001 - Backhoe-Loader WB90-1, WB92-1, WB100-1 Operation & Maintenance Manual.pdf
WEAM000604 - Backhoe-Loader WB97R-2 avance Operation & Maintenance Manual.pdf
WEAM000702 - Backhoe-Loader WB97S-2 Operation & Maintenance Manual.pdf
WEAM000704 - Backhoe-Loader WB97S-2 Operation & Maintenance Manual.pdf
WEAM002303 - Backhoe-Loader WB91R-2, WB93R-2 avance Operation & Maintenance Manual.pdf
WEAM002304 - Backhoe-Loader WB91R-2, WB93R-2 avance Operation & Maintenance Manual.pdf
WEAM005801 - Backhoe-Loader WB70A-1 Operation & Maintenance Manual.pdf
WEAM005802 - Backhoe-Loader WB70A-1 Operation & Maintenance Manual.pdf
WEAM006000 - Backhoe-Loader WB93R-5 Operation & Maintenance Manual.pdf
WEAM007400 - Backhoe-Loader WB97R-5 Operation & Maintenance Manual.pdf
WEAM007604 - Backhoe-Loader WB97S-5S Operation & Maintenance Manual.pdf
WEAM008301 - Backhoe-Loader WB91R-5 Operation & Maintenance Manual.pdf
WEAM008700 - Backhoe-Loader WB93R-5E0 Operation & Maintenance Manual.pdf
WEAM009001 - Backhoe-Loader WB97S-5E0 Operation & Maintenance Manual.pdf
WEAM011407 - Backhoe-Loader WB93R-5E0 Operation & Maintenance Manual.pdf
WEAM011408 - Backhoe-Loader WB93R-5E0 Operation & Maintenance Manual.pdf
WEAM011509 - Backhoe-Loader WB97R-5E0 Operation & Maintenance Manual.pdf
WEAM011607 - Backhoe-Loader WB93S-5E0 Operation & Maintenance Manual.pdf
WEAM011704 - Backhoe-Loader WB97S-5E0 Operation & Maintenance Manual.pdf
WEAM011707 - Backhoe-Loader WB97S-5E0 Operation & Maintenance Manual.pdf
WEAM015402 - Backhoe-Loader WB97R-5E0 Operation & Maintenance Manual.pdf
WEAM015403 - Backhoe-Loader WB97R-5E0 Operation & Maintenance Manual.pdf
WEAM015502 - Backhoe-Loader WB97S-5E0 Operation & Maintenance Manual.pdf
WEAMWB9500 - Backhoe-Loader WB95-1, WB97-1 Operation & Maintenance Manual.pdf
WEBM000400 - Backhoe-Loader WB91R-2, WB93R-2 Shop Manual.pdf
WEBM000401 - Backhoe-Loader WB91R-2, WB93R-2 avance Shop Manual.pdf
WEBM000404 - Backhoe-Loader WB91R-2, WB93R-2 avance Shop Manual.pdf
WEBM000405 - Backhoe-Loader WB91R-2, WB93R-2 Shop Manual.pdf
WEBM001000 - Backhoe-Loader WB97R-2 Shop Manual.pdf
WEBM001001 - Backhoe-Loader WB97R-2 Shop Manual.pdf
WEBM001003 - Backhoe-Loader WB97R-2 Shop Manual.pdf
WEBM001004 - Backhoe-Loader WB97R-2 Shop Manual.pdf
WEBM002300 - Backhoe-Loader WB98A-2 Shop Manual.pdf
WEBM002400 - Backhoe-Loader WB97S-2 Shop Manual.pdf
WEBM002401 - Backhoe-Loader WB97S-2 Shop Manual.pdf
WEBM002404 - Backhoe-Loader WB97S-2 Shop Manual.pdf
WEBM003200 - Backhoe-Loader WB70A-1 Shop Manual.pdf
WEBM005800 - Backhoe-Loader WB93R-5 Shop Manual.pdf
WEBM006300 - Backhoe-Loader WB97R-5 Shop Manual.pdf
WEBM007400 - Backhoe-Loader WB93S-5 Shop Manual.pdf
WEBM007500 - Backhoe-Loader WB97S-5 Shop Manual.pdf
WEBM007600 - Backhoe-Loader WB91R-5 Shop Manual.pdf
WEBM007700 - Backhoe-Loader WB95R, WB97R Repair & Maintenance Manual.pdf
WEBM008100 - Backhoe-Loader WB93R-5E0 Shop Manual.pdf
WEBM008101 - Backhoe-Loader WB93R-5E0 Shop Manual.pdf
WEBM008102 - Backhoe-Loader WB93R-5E0 Shop Manual.pdf
WEBM008200 - Backhoe-Loader WB97R-5E0 Shop Manual.pdf
WEBM008202 - Backhoe-Loader WB97R-5E0 Shop Manual.pdf
WEBM008300 - Backhoe-Loader WB93S-5E0 Shop Manual.pdf
WEBM008302 - Backhoe-Loader WB93S-5E0 Shop Manual.pdf
WEBM008400 - Backhoe-Loader WB97S-5E0 Shop Manual.pdf
WEBM008402 - Backhoe-Loader WB97S-5E0 Shop Manual.pdf
WEBMWB7000 - Backhoe-Loader WB70A-1 Shop Manual.pdf
WENAM00080 - Backhoe-Loader WB97R-5E0 Operation & Maintenance Manual.pdf
WENAM00081 - Backhoe-Loader WB97R-5E0 Operation & Maintenance Manual.pdf
WENAM00101 - Backhoe-Loader WB93R-5E0 Operation & Maintenance Manual.pdf
WENAM00102 - Backhoe-Loader WB93R-5E0 Operation & Maintenance Manual.pdf
WENAM00120 - Backhoe-Loader WB93R-5E0 Operation & Maintenance Manual.pdf
WENBM00090 - Backhoe-Loader WB97R-5E0 Operation & Maintenance Manual.pdf
WENBM00111 - Backhoe-Loader WB93R-5E0 Shop Manual.pdf
WEPB007501 - Backhoe-Loader WB93R-5 Parts Manual.pdf
WEPB009300 - Backhoe-Loader WB93S-5 Parts Manual.pdf
WEPB009400 - Backhoe-Loader WB97S-5 Parts Manual.pdf
WETT001304 - Backhoe-Loader WB93R-5, WB97R-5 Basic Technical Training.pdf
WETT001308 - Backhoe-Loader WB91R-5EO, WB93R-5EO, WB97R-5EO, WB93S-5EO, WB97S-5EO Basic Technical Training.pdf
WHAM002100 - Terna Articolata WB98A-2 Manuale d'Uso e Manutenzione.pdf
WHBM002403 - Terna WB97S-2 Manuale d'Officina.pdf
WPAM005801 - Conjunto Industrial Articulado WB70A-1 Manual de Operação e Manutenção.pdf
WPAM005802 - Conjunto Industrial Articulado WB70A-1 Manual de Operação e Manutenção.pdf
WPAM011408 - Conjunto Industrial WB93R-5E0 Manual de Operação e Manutenção.pdf
WPAM011607 - Conjunto Industrial WB93S-5E0 Manual de Operação e Manutenção.pdf
WPAMWB9500 - Conjunto Industrial WB98R-1, WB97R-1 Manual de Operação e Manutenção.pdf

EXCERPT:
REMOVAL AND INSTALLATION - STEERING UNIT
STEERING UNIT
Removal
- Lower the working equipment completely until it rests on the ground.
Engage the parking brake, stop the engine and remove the ignition key.
- Eliminate residual pressure from all circuits by moving all control levers in all directions.
1 -Remove the front mat (1).
2 -Disconnect the connector (2) and remove the seat (3).
3 -Remove the steering wheel and the direction indicator, transmission reverse and headlight dipper beam control groups
(For details , see "STEERING WHEEL AND TRANSMISSION-REVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP").
4 -Loosen and remove the upper screws (4) retaining the instrument panel holder (5).
5 -Remove the steering column lock knob (6).
6 -Remove the screws (7) retaining the side of the instrument panel holder.
...
Shop Manual (WEBM003200)
HYDROSTATIC TRANSMISSION
TRANSMISSION COMPONENTS
Machine travel is obtained via a closed circuit hydrostatic transmission including:
1- Reversible and variable displacement axial piston hydraulic pump direct-coupled on diesel engine.
2 -Variable displacement axial piston hydraulic motor direct-coupled on transmission. They are connected by hoses (A - B).

On "closed circuit" system have been installed also following devices:
On hydraulic pump
a - Electro-distributor (5) to select hydraulic motor rotation direction.
b - Pressure cut-off valve (6).
c - By-pass valve (7).
d - Control valve (8).
e - Inching valve (9).
f - Main relief valve (4).
On hydraulic motor
g - Automatic displacement control device according to working pressure (1 0).
h - Additional piloting (11 ).
i - Recognition device for travel direction (12).
I - Oil exchange valve (13).

HYDROSTATIC TRANSMISSION OPERATION
• Pump shaft (1), (which drags cylinder barrel) is rotates by the engine.
• Moving the positioning piston (2) the swash plate is shifted from neutral position; an angle is fixed between pistons and swash plate (on which pistons are constrained); this angle will create a volume difference in one side smaller and in the other side bigger. In this way it is created an oil pressure delivery area (hydraulic power) through hydraulic motor (pipe A on diagram) and a suction area from hydraulic motor (pipe Bon diagram).
• The oil sent from pump to motor (pipe A), pressing on pistons, will move pistons and consequently the output shaft (14), transforming "hydraulic power" into "mechanical power".
• The oil transferring power is returned through pipe (B) to hydraulic pump's suction port to be reused.
• This is the "closed circuit" principle which, theoretically, utilises once again the same oil quantity.
NOTE - Moving the positioning piston in the other direction, it will create the reversal direction of engine rotation.
• Oil leakages between moving parts, cause, during machine's life, the emptying of closed circuit; this trouble is solved applying a gear pump (3) named boosting pump, which sucks oil from the hydraulic tank and introducing it into the closed circuit keeping inside constant pressure, checked by a fixed setting main relief valve (4).
• Part of pressurized oil of the boosting circuit is used for positioning piston (2) operation which allows the stepless variable inclination of the swash plate and therefore the hydraulic motor speed.
• All the system is protected from pressure peaks (and therefore from overloads) by safety valves (7).
...
REMOVAL AND INSTALLATION - TRANSMISSION
Checks and inspections
1 -Inspect grooves on (large and small) sealing rings for wear or damage. Replace parts if necessary.
2 -Inspect output shaft for wear or damage. Check oil passages in the output shaft for restrictions or foreing matter.
3 -Check ball bearings and roller bearings for smooth areas, pits or other damage.
4 -If the clutch discs are to be used again, keep the clutch packs in the same previous dismantling order separate and record which clutch pack goes with each clutch.
5 -At each disassembly, use a gauge bar to check that total thickness of clutch unit is within the permissible wear limit. If it is not, replace the clutch unit (18) with a new one. Check all clutch plates for burns and inspect the friction material for damage. Inspect the grooves in the friction material for being well traced. Also inspect the clutch drive plates (17) for being perfectly flat, and check them for pits or scratches. If any of the above conditions exists on any of the plates, replace the clutch unit with a new one.
6 -If a new clutch unit is to be used, leave the unit soaked in transmission oil for at least one hour before installing. In any case, before attempting to install the clutch unit, lubricate the contact surfaces of the clutch drive plates with transmission oil. Check the hole on the input shaft entering the rear half housing for any damage that may later cause leaks when clutch is installed. Check the splines on the input shaft for damage caused by steel plates. Replace parts as necessary during installation.
...

Komatsu Backhoe-Loader WB70, WB91, WB93, WB95, WB97, WB98 Workshop Repair & Service Manual