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| Illustration 1 | g01304631 |
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Planetary lubrication (1) Passage (2) Passage (3) Passage (4) Passage (5) Passage (6) Passage | |
Some of the oil from the torque converter and lubrication section of the oil pump combines with excess oil flow over the main relief valve in order to provide lubrication for the transmission. All planetary gears and bearings are lubricated by pressure lubrication.
The oil flows through an external line to the bevel gear case. Then, the oil flows through an internal tube to passage (5) in the transmission cover. Part of the oil flows back through passage (4) in the transmission case assembly. Then, the oil flows through tubes for lubrication of the bevel gear and pinion, and the transfer gears.
Part of the oil flows through passage (6) for lubrication of the No. 1 and No. 2 planetary gears, bearings, and clutches. The remainder of the oil flows through passage (1) to passage (3) in the input shaft. The oil then flows through passage (2) for lubrication of the No. 3, No. 4, and No. 5 planetary gears, the bearings, and the clutches.
All oil leakage from the clutches and return oil drains to the bottom of the transmission case. The oil then drains to the sump in the bevel gear case.