Komatsu WH609-1, WH613-1, WH713-1, WH714-1, WH714H-1 Workshop Manual – Factory OEM Documentation

You need a factory workshop manual for these Komatsu telehandlers because the aftermarket reprints will get you in trouble. I have seen techs round a torque value to the nearest “close enough” and lose a transmission. This is the real deal – OEM Komatsu printed pages, not a third-party copy. The Komatsu WH609-1, WH613-1, WH713-1, WH714-1, WH714H-1 Workshop Manual covers every hydraulic line, wiring branch, and fastener spec that Komatsu put into the WH series. If you are a DIY owner or a shop tech working on a WH609-1 serial 395F60001 and up, you need the factory data. Period.

I have torqued more head bolts than most people have had hot meals, and I can tell you that the STANDARD TIGHTENING TORQUE table in this manual (page 00-5 area) is worth the price alone. You get the exact ft-lb for each bolt grade, not a generic chart. That difference keeps your axle housings from leaking and your boom pins from loosening.

516 Pages of Factory Procedures

That is the real count – 516 pages of structured content. After the SAFETY section and FOREWORD, you hit the HOISTING INSTRUCTIONS – something most home guys skip until they drop a machine off a jack. Then the STANDARD TIGHTENING TORQUE, COATING MATERIALS, WEIGHT TABLE, TABLE OF OIL AND COOLANT QUANTITIES, and CONVERSION TABLE. All the front matter you need before you turn a wrench. The manual is divided into four groups: 10 STRUCTURE AND FUNCTION, 20 TESTING AND ADJUSTING, 30 DISASSEMBLY AND ASSEMBLY, and 90 OTHER. Each group has its own page numbering, so you can find things fast.

Hydraulic Pressure Checks and Calibration

Group 20 is where most jobs live. You get VALVE LASH ADJUSTMENT procedures with the exact feeler gauge thickness – none of that “snug then a quarter turn” nonsense. The CHECKING AND CALIBRATING WORK EQUIPMENT HYDRAULIC PRESSURES section walks you through the cut-off valve, secondary valve calibration for boom lift and extension, servocontrol pressure, and steering pressure priority valve operation. If you have ever chased a weak boom lift, you know the LS signal check is the first thing to verify. The manual tells you exactly which port to tap and what pressure you need to see. No guesswork.

Transmission and Torque: What the Manual Covers

The TRANSMISSION (POWER SHIFT) CHECKS section in Group 20 includes a troubleshooting guide – low clutch pressure, low feed pressure, overtemperature, noisy converter, poor power. Then it gives you the assembly pressure checks: general converter pressure, engagement pressure for each clutch, and an inspection of the 1st clutch (forward and reverse) and the 2nd-3rd-4th clutch. You also get transmission clutch wear inspection. On top of that, the manual covers the CHECKING THE SPEED OF THE TRANSMISSION SHAFTS RESPONSIBLE FOR TRANSLATION (CARDAN SHAFTS). If you are rebuilding a transmission on a WH713-1, you need these numbers. Do not try to convert metric specs from another model – the WH range has unique internal clearances.

Understanding how a Manual Transmission works helps when diagnosing shift issues, but this manual gives you the exact Komatsu clutch pack clearances. For a deeper parts reference, the Komatsu WH609-1 WH613-1 Parts Catalog | 347 Pages OEM pairs perfectly with this workshop manual.

Valve Lash Adjustment: Why Specs Matter

Group 20 opens with STANDARD SPECIFICATIONS broken down by engine type: ASPIRATED ENGINES and TURBO ENGINES, and then by machine model (WH609-1, WH613-1, WH713-1, WH714-1, WH714H-1, WH716-1). This is vital because the turbo and aspirated engines have different valve lash specs. The VALVE LASH ADJUSTMENT procedure is written with the engine cold and gives you the intake and exhaust clearance in decimal inches. I have seen a WH613-1 lose a valve because a tech used the aspirated spec on the turbo engine – that repair cost more than the machine is worth. Use the factory chart.

Skip the guesswork.

Brake System Bleeding and Adjustment

The ADJUSTING BRAKE PEDAL TRAVEL AND POSITIONING THE STOP LAMP MICROSWITCHES section covers checking procedure, pedal height adjustment, sprag length adjustment, and microswitch adjustment. Then you get ADJUSTING THE PARKING BRAKES – cable length adjustment and functional check. BLEEDING AIR FROM CIRCUITS covers pump housing fill, bleeding from cylinders, and bleeding from brake circuits. This is not a generic brake bleed sequence – it tells you which bleeder to crack first and how to refill the pump housing without aerating the fluid. Follow it exactly and you won’t have a soft pedal after bleeding.

Need more system diagrams? The Komatsu WH609-1, WH613-1, WH713-1, WH714-1, WH714H-1 Service Manual expands on the electrical and hydraulic schematics. For the full factory bundle, see the Komatsu WH609-1 WH613-1 WH713-1 WH714-1 WH714H-1 Workshop Manual OEM.

Knowing the principles behind a Manual Transmission will not give you Komatsu-specific clutch pressures – this manual will.

Does This Manual Cover the Electrical System?

Yes. Group 10 includes ELECTRICAL DIAGRAMS with fuse centre location, CAB WIRING (1/2 and 2/2), CAB WIRING DIAGRAM, CAB ROOF WIRING, ENGINE WIRING, FRONT WIRING, REAR FRAME WIRING, FRONT SERVICE LIGHTS WIRING, and GROUND WIRING. Each diagram is labeled with connector numbers and wire colors. If you have an intermittent no-start on a WH714-1, you can trace the engine wiring diagram from the ECM to the starter relay. The manual also covers the AIR CONDITIONING SYSTEM and CLIMATE CONTROL SYSTEM OPERATION, including compressor belt tensioning procedure.

FAQ

Can I use this manual for the WH716-1 as well?

The manual explicitly includes WH716-1 (serial 395F70004 and up) in the model coverage. Standard specs and procedures for that model are listed.

What torque values are given for the transmission clutch packs?

The TRANSMISSION ASSEMBLY PRESSURE CHECKS section in Group 20 lists the engagement pressure for each clutch (1st, 2nd-3rd-4th) in psi. The STANDARD TIGHTENING TORQUE table at the front of the manual gives fastener torque for bolts and nuts. For the specific clutch retaining bolts, you need to refer to the DISASSEMBLY AND ASSEMBLY group (30) – that section is not included in the OCR preview but is present in the full PDF. The manual contains the exact Komatsu specs, not generic values.

Get the factory data on your screen. If you are pulling a transmission on a Komatsu telehandler, do it with the printed specs from the source that assembled it. Download the Factory Manual now.