This is the factory repair manual for the CLAAS Dominator 108 VX, 98 VX and 88 VX combines built 1998 to 2000. It covers component-level teardown and rebuild: threshing drum and concave, drum speed reduction kit, intensive separation, cleaning fan and sieve pan drives, feeder housing, cutterbar drive, left and right drive belt layouts, transmission gearbox, final drives, ground and working hydraulics, steering axle, foot brake, grain tank unloading, straw chopper and walkers, plus the engine electrics and PTO for all three VX engines. If you are splitting a gearbox, re-tensioning a threshing drive or chasing a hydraulic ram leak on one of these machines, this is the book the dealer wrench worked from.
What's Inside This Claas 108VX/98VX/88VX Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General, Safety and Specifications | 1-20 | Safety Rules, Specifications, General Repair Information, Maintenance |
| Cab and Climate | 21-62 | 3-D Cleaning System, Air Conditioner |
| Cleaning and Chaff Handling | 63-118 | Chaff Spreader and Drive, Cleaning Fan, Concave |
| Cutterbar, Axles and Drive Belts | 119-202 | Cutterbar Drive, Drive Axle, Left and Right Drive Belts |
| Engine and Electrics | 203-276 | Engine Electric System, Engine Accessories, 88/98/108 Vx Engines, PTO |
| Fan, Feeder and Final Drives | 277-388 | Fan Drive, Feeder Housing, Final Drives |
| Brakes and Grain Handling | 389-482 | Foot Brake, Grain Elevator, Grain Tank Unloading and Drive |
| Hydraulic System | 483-568 | Ground Hydraulics, Hydraulic Pump and Drive, Low-Pressure and Steering Rams, Oil Cooler |
| Separation and Threshing Drives | 569-684 | Impeller, Intensive Separation, Left and Right Threshing Drives, Returns Elevator, Rotary Radiator Screen |
| Sieve, Steering and Straw Handling | 685-846 | Sieve Pan and Drives, Steering and Steering Axle, Straw Chopper, Spreader and Walker |
| Threshing Drum and Transmission | 847-976 | Threshing Drum, Speed Reduction Kit, Transmission Gearbox, Preparation Floor |
| Working Hydraulics and Torque | 977-1044 | Valve Combinations, Working Hydraulics Rams, Torque Settings |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| DOMINATOR 108 VX | ||
| Transmission gearbox capacity | 6.0 l | |
| Final drives capacity | 4.5 l each | |
| Rear wheel drive planetary gears capacity | 0.8 l each | |
| Drum speed reduction kit capacity | 1.0 l | |
| Grain tank unloading tube angle drive capacity | 200 g each | |
| DOMINATOR 98 VX / 88 VX | ||
| Transmission gearbox capacity | 6.0 l | |
| Final drives capacity | 3.0 l each | |
| Rear wheel drive planetary gears capacity | 0.8 l each | |
| Drum speed reduction kit capacity | 1.0 l | |
| Grain tank unloading tube angle drive capacity | 200 g each | |
Claas 108VX/98VX/88VX Common Problems This Manual Covers
Threshing drum will not turn or seizes when crop feeds in
Work through the Threshing Drum and Transmission section: check drum bearings, the speed reduction kit and both threshing drive variators. The manual gives the disassembly order for the drum and its drives so you can isolate a seized bearing from a slipping drive before pulling the drum out.
Manual Section: Separation and Threshing DrivesExcessive grain loss or dirty sample from the cleaning shoe
The Cleaning and Chaff Handling section covers the cleaning fan and concave, and the sieve section covers the sieve pan and its drives. Follow the inspection steps for worn shaker bushes, fan drive condition and concave setting to bring the sample back.
Manual Section: Cleaning and Chaff HandlingHeader or reel controls respond slowly, erratically, or not at all
Go to the Working Hydraulics and Torque section for the valve combinations and working rams, and the Hydraulic System section for pump, drive and low-pressure circuit. The manual walks through ram resealing and valve block overhaul, which cures most sticky or dead control functions on these machines.
Manual Section: Working Hydraulics and TorqueDrive belts shredding or throwing on one side of the machine
Use the Cutterbar, Axles and Drive Belts section, which lays out the left and right belt runs separately. It shows pulley alignment, tensioner condition checks and correct routing, since a worn idler or misaligned variator will eat a new belt in a day.
Manual Section: Cutterbar, Axles and Drive BeltsFrequently Asked Questions
My drum stalls or the threshing drive slips under heavy crop. Does this manual cover the drive teardown?
Yes. There are separate sections for the left and right threshing drives, the threshing drum itself and the drum speed reduction kit. You get the strip-down sequence for the variator and belt runs, so you can find whether it is a glazed belt, worn variator faces or a seized bearing before you throw parts at it.
I am losing grain over the sieves. Where do I start in the manual?
Start with the Cleaning and Chaff Handling section - cleaning fan, concave and chaff spreader drive - then the sieve pan and its drives. On these Dominators most cleaning complaints trace back to worn sieve pan hanger bushes or a fan drive that no longer holds set speed, and both repairs are laid out step by step.
Does it cover the hydraulics, including the steering and header lift rams?
It does, in two parts: ground hydraulics with the pump and its drive, oil cooler, low-pressure and steering rams, and a separate working hydraulics section with the valve combinations and the rams they feed. That is what you need for resealing a leaking lift ram or tracing a valve block that will not hold the header up overnight.
Is this the right manual for a 98 VX with the Dominator 3-D cleaning system and cab air conditioning?
Yes. The Cab and Climate section covers both the 3-D cleaning system and the air conditioner. All three models - 88 VX, 98 VX and 108 VX - share this manual, with the engine and electrics section split out per model where they differ.
Are torque figures and belt routings included, or is this just an operator book?
This is a repair manual, not an operator handbook. There is a dedicated torque settings section, the left and right drive belt sections show the belt runs on each side of the machine, and each drive chapter covers removal, inspection and refitting of the actual components.
Reviews
There are no reviews yet.