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John Deere JD540B Skidder and Grapple Skidder Operational & Test Technical Manual (TM1139OP)
Complete Operational & Test Technical Manual with electrical wiring diagrams for John Deere JD540B Skidder and Grapple Skidder. It’s the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.
John Deere JD540B Skidder and Grapple Skidder Operational & Test Technical 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.
TM1139OP – John Deere JD540B Skidder and Grapple Skidder Operational & Test Technical Manual.pdf
264 pages, bookmarked, Searchable, Printable, high quality PDF
EXCERPT:
Torque Paths Through Transmission
PRESSURE OIL
Fig. 6-F/ow of Engine Power in First Speed Forward
Group 9025 shows the clutches and brakes which must be engaged to obtain the various transmission speeds. The transmission hydraulic control system controls the actual engagement of clutches and brakes.
Since B1 restrains one ring gear from turning, the planet pinions “walk around” the ring gear, forcing the planet pinion carrier to rotate in the same direction as the sun pinion, but at a slower rate of speed. The planet pinion carrier transmits power to the overdrive and reverse planetary set.
First Speed Forward
When the transmission control lever is placed in the first speed forward position, the hydraulic transmission control system engages C1 in the clutch pack and B1 and C3 in the planetary pack (Fig. 6).
The flow of engine power is from the engine disconnect clutch to C1 in the clutch pack. The C1 clutch shaft transmits power from C1 to the C1 sun pinion in the planetary pack.
When C3 is engaged, both sun pinions in the over-drive and reverse planetary set are locked together.
Since the planet pinions cannot rotate at different speeds, the planetary set rotates as a solid unit and acts as a direct drive to the transmission reduction gears.
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