User manual

Rev. D

Multi Pro 5700--DHydraulic System Page 4 -- 26

Adjust Relief Valve

The spray pump drive circuit relief valve is located on the

left side of the piston (traction) pump (Fig. 26). The

steering circuit relief v alve is located under the suction

hose on the right side of the gear pump (Fig. 27). Relief

pressure should be tested before and after adjusting the

relief valve (see Steering Circuit Relief Pressure Test

and Spray Pump Drive Circuit Relief Pressure Test in the

Testing section of this chapter). Adjustment of the relief

valve can be performed as follows:

NOTE: Do not remove the relief valve for adjustment.

NOTE: To gain access to the adjustment socket and

jam nut on the steering circuit relief valve, remove plastic

cap.

1. To increase relief pressure setting, loosen jam nut

on relief valve and turn the adjustment socket on the re-

lief valve in a clockwise direction. A 1/8 turn on the sock-

et will make a measurable change in relief pressure.

Tighten jam nut after adjustment.

2. To decrease pressure setting, loosen jam nut on re-

lief valve and turn the adjustment socket on the relief

valve in a counterclockwise direction. A 1/8 turn on the

socket will make a measurable change in relief pres-

sure. Tighten jam nut after adjustment.

3. Recheck spray pump drive circuit relief pressure and

readjust as needed.

1. Spray circuit relief valve

2. Relief valve body

3. Jam nut

Figure 26

1. Steering relief valve 2. Gear pump

Figure 27