Case 845, 865, 885 Grader Repair Manual

Manuals: Service Manual
General
Engine
Fuel System
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Manual Extract: Loader bucket control cylinder – Disassemble
Two clutches must be engaged in order to transmit torque from the transmission input to the transmission output shaft. In Neutral all clutches are in the released condition.

The clutches numbered “1” through “4” are referred to as directional clutches. Clutches “1” and “2” engage forward gears and clutches “3” and “4” engage reverse gears. These clutches have two passages through the shaft in order to maximize the “lube flow” to cool the clutches.

These clutches have more friction surface area and a higher thermal capacity than the speed clutches. The directional clutches are used for modulation during shifting and when using the clutch pedal. The directional clutches connect the input shaft of the transmission through various ratios to the cylinder gear train and are located in the upper part of the transmission. referred to as speed clutches.

The speed clutches connect the cylinder gear train to the output shaft of the transmission at various ratios. Working in conjunction with the directional clutches up to 8 speed ranges in forward and 4 ranges reverse directions are possible. The speed clutches are located in the lower part of the transmission.