Using Hydraulic Spray Pumps

RXA0096591-UN-13AUG08

Spray Pump

RXA0096592-UN-13AUG08

Spray Pump with Drain Directly to Sump (Zero Back Pressure)

A - Pressure Line

B - Return Line

C - Needle Line (Closed)

D - Inlet Line Orifice (Remove)

E - Power Beyond Return Coupler

F - Case Drain Line

G - Drain Port (To Sump)

1. Follow spray pump manufacturers recommendations for pump model selection, setup and operation.

2. NOTE: Select the smallest displacement motor recommended for multiple hydraulic function operation. The smaller displacement will lower total hydraulic flow demand and improve overall system performance.

3. Connect motor pressure line (A) to retract port of SCV (right-hand side).

4. Connect return line (B) to power beyond return coupler (E).

5. Some hydraulic motors have a separate case drain line for internal leakage. The case drain line (F) must be routed to the hitch frame drain port (G) to direct oil to sump (zero back pressure.)

6. Activate SCV by moving lever forward to retract detent position and adjust hydraulic flow rate per pump manufacturers guidelines.

7. Shut off spray pump by moving SCV control lever to float position (full forward and down). Stopping spray pump by moving SCV to neutral position will cause high pressure oil to be trapped between SCV and pump. This may cause damage to spray pump seals. This also applies to other motors using the SCV pressure and return couplers.

   IMPORTANT: Some motors are not equipped with over-speed protection. Extended operation above recommended speed can cause failure.