Tronair 5731, Operation & Service Instructions

Page: 43 / 119

Model: 5731
Hydraulic Power Unit
08/2016 | Rev. 08 Page | 38
9.9
RETURN MANIFOLD ASSEMBLY (continued)
9.9.1 Return System Pressure Relief Valve
The Return System Pressure Relief Valve can be purchased as a preset assembly. If the relief valve is serviced by the end
user, the valve must be set to crack at 150+/-7 psig
before being re-installed on the HPU.
PARTS LIST
Fluid Type: Aviation Phosphate Ester, Type IV
Item Part Number Description Qty
1 ............................ HC-2202 .......................................... Valve, Pressure Relief ( Pre-set ) ............................................... 1
Not Shown ....................

HC-2006-220 .................................... O-ring, Series 2 ........................................................................ 1

Included with Item 1.
9.0 Maintenance continued on following page.
FIGURE 9.9.1

Return System Pressure Relief Valve