Danfoss PVG 16 Service Manual

Also see for PVG 16 PVH/Covers: Service and parts manual Technical information Installation guide

Contents

Danfoss PVG 16 Service Manual Manual pdf 17 page image

PVG 16 and 32 general conditionsThe specification sheet is compiled by the sales department for assembly of a new PVG 16 and PVG 32valve groups.1. Before, during and after the assembly/disassembly of new PVG groups, absolute cleanliness and caremust be observed with regard to internal and external parts of the units concerned.2. Use non-volatile, petroleum based solutions for cleaning valves and/or modules.3. Replace all parts considered likely to cause malfunction during subsequent testing.4. Replace all loose O-rings (without exceptions) with new O-rings.5. Lubricate all moving parts with hydraulic oil before assembly.6. Lubricate all O-rings with petroleum jelly.Refer to Service Manual 520L0515 for module designations, item and spare parts numbers.AssemblyThe basic assembly sequence for PVG 16 and PVG 32 group is as follows:1. Starting from the end plate place the module with (PVS, PVSP, PVSK ) the tie rod bolts with the longthreaded end pointing upwards ready for mounting of PVB modules.2. Place all lubricated O-rings in their respective grooves in the different modules.3. Locate the basic modules (PVB) against the PVP (PVS, PVSP, PVSK) using the tie rod bolts foralignment between the PVP and the PVB modules making sure the LS shuttle valve is able to movefreely.4. Place the PVP (the PVS if a valve group has midinlet, or HIC) as the last module and place the washersand nuts in position and hand tighten the valve.5. Place the valve on a plain and level surface and tighten the assembly to a torque of 28 ±2 N•m (247.8±17 lbf•in) using a 13 mm socket. Max. level tolerance is 0.5 mm per section e.g. this means with 8 PVBsections max. allowable height difference between the mounting holes would be 4 mm (this wouldalso be seen as a twist in the valve group assembly).The valve assembly is to be assembled in accordance with the specification sheet.6. Install the spools (PVBS) into the PVB’s.The assembled spool is marked with two four-digit numbersThe number in the end of the spool where the plug is fitted, “B”, is the drawing number of the spooland indicates that this end must face towards the “B” port of the valve.The other number, stamped on the side the PVBS pull rod “A”, is the module number of theassembled main spool.For spool assemblies with remote hydraulic spools, the centering spring is different. The standardspring has a wire diameter of 1.9 mm. The remote hydraulic spring (5-15 bar) has a wire diameter of2.8 mm.Service ManualPVG 16 and 32 Service Assembly/Disassembly GuideAssembly instructions© Danfoss | November 2017 L1104530 | AX00000133en-US0106 | 17