General-pump HF Repair Manual User Manual

HHFFRepair ManualRef 300623 Rev.A01-12

GENERAL PUMPA member of the Interpump GroupHF SERIESDisassemble the inlet and outlet valve units by screwing on an M8 screw long enough to act on the

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 11Pay careful attention to the state of wear of the various components; replace them whennece

Insert the inlet and outlet valve units with their related bushings checking that they are thouroughly insertedin their seat on the head. Therefore ap

GENERAL PUMPA member of the Interpump GroupHF SERIESPay careful attention to the order of sealing pack disassembly as shown in fig. 27 for HF22Aand HF

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 14Check them for wear; replace if necessary.At each disassembly, all the O-rings of the plung

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 153. SCREW CALIBRATIONScrew calibration by means of a torque wrench only.DescriptionExploded

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 164. REPAIR TOOLSPump maintenance may be carried out using simple tools for assembling and di

GENERAL PUMPA member of the Interpump GroupHF SERIESRef 300623 Rev.A01-12Page 17MAINTENANCE LOGOIL CHANGEGREASEPACKINGREPLACEMENTPLUNGER REPLACEMENTV

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 2INDEX1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 31. INTRODUCTIONThis manual describes the instructions for Repairing HF Series pumps, and mus

Page 4GENERAL PUMPA member of the Interpump GroupHF SERIES2.1.1 Crank Mechanism DisassemblyThe correct sequence is the followingA) Disassemble:• pump

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 52.1.2 Crank Mechanism AssemblyAfter cleaning the crankcase, reassemble the crankcase mechani

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 6Before assembling the cover (sight glass side), be sure that the shim rings have been insert

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 7A) Assembly / Disassembly of the crankshaft without replacing the bearingsAfter removing the

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 8The shim pack must be reassembled as follows:A) Insert the crankshaft in the crankcase, bei

GENERAL PUMPA member of the Interpump GroupHF SERIESPage 92.2 Fluid End Repair2.2.1 Disassembly of the Head - Valve UnitsService operations are limite