The 171 Hydraulic Control consists of a fender mounted external (foot operated) control valve and a hydraulic pump. The control is used to operate a hydraulic blade tilt cylinder. The vane pump is mounted on the rear power take-off housing of the engine and is driven by the rear power take-off idler gear. The oil for the hydraulic control system is supplied from the tractor transmission and is cooled and filtered by the transmission oil system.
Go to the library and look at the D7E 16 page brochure I just put there yesterday. It has pictures of the all the hydraulic systems available for your tractor.
Craig
Our channel highlights machines from the earliest Holt and Best track-type tractors, equipment from the start of Caterpillar in 1925, up to units built in the mid-1960s.
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Antique Caterpillar
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