Connecting Implements to High Flow Hydraulic SCV's

RXA0138822-UN-29JAN14

High Flow Hydraulic SCV Stack (5 SCVs with Hitch Valve)

A - 85cc Pump SCV Couplers

B - 90cc Pump SCV Couplers

1. For Ag high flow, it is recommended that the hydraulic motor be connected to the top SCV’s (85cc high flow pump). Not recommended for high flow scraper hydraulics

   The high flow hydraulic system consists of one 90cc primary pump for bottom SCV's (B) and one 85cc secondary pump for top two SCV's (A).

2. The 85cc pump supplies oil to top two SCV's. It is recommended these SCV's be used for low pressure and high flow functions. Most hydraulic motors use 19 to 26.5 L/min (5 to 7 gpm) per motor and a pressure of around 100 bar (1450 psi) to operate.

   Use top two SCVs to operate hydraulic motors such as air seeders, sprayers and vacuum planters. Using the secondary pump when operating hydraulic motors will improve fuel economy, reduce power loss and reduce heating of hydraulic oil. This reduces hydraulic system interactions with steering, brakes, raise, lower, active down force, etc.

   Hydraulic and cooling system overheating can result if implement is not connected correctly into hydraulic system.

   The secondary pump and top two couplers can provide high pressure to the same functions as the primary pump, however, the benefits of improved fuel economy and reduced power loss disappear. There is an increased chance of system interactions with hydraulic motors being on the same pump as other hydraulic functions which typically means increased vacuum level or blower motor speed fluctuations. Under some conditions, more heat can be generated which places increased load on the cooling system.

3. The 90cc pump supplies oil to bottom SCV's. It is recommended these SCV's be used for high pressure and low flow functions, such as air seeders, large cylinders, and active down force systems.