Lubrication – Systems – Gearing
Patent
1978-10-27
1980-11-25
Brown, David H.
Lubrication
Systems
Gearing
74467, 184 623, F01M 108, F16H 144
Patent
active
042353076
ABSTRACT:
A tractor transmission is provided with a clutch housing containing an oil reservoir vented to the main transmission which is vented to atmosphere. A transfer pump is disposed in the clutch housing to pump an oil-air mixture from the reservoir to the main transmission housing. A portion of the pumped oil-air mixture is diverted through a line of a predetermined size to lubricate the front differential. When the oil reaches the front differential, it is diverted to the left and right final drive gear spaces separated by left and right walls from the differential gears. The oil in the final drive spaces increases in height until it passes through either the bearings supporting the differential housing or through the center of the differential pinion gears to the differential gear spaced. Holes in the left and right walls provide maximum levels of oil in the final drive spaces. When the oil spills over into the differential gear space, it lubricates the differential gears and then passes into a baffle and an overflow line which is located below the center line of the differential. The baffles separate the oil from the air and the pressure of the air in the sealed differential forces the oil through the overflow line back to the reservoir in the clutch housing.
REFERENCES:
patent: 1858533 (1932-05-01), White
patent: 2775308 (1956-12-01), Senkowski et al.
patent: 2971595 (1961-02-01), Fabere et al.
patent: 3383937 (1968-05-01), Toenne et al.
patent: 3738452 (1973-06-01), Havsinger
Browning Edgar P.
Sturtz Terry L.
Brown David H.
Deere & Company
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