Enerpac DC8143900 Instruction And Repair Parts Sheet Download Page 8

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Figure 6

Pressure port

Safety relief valve

Low pressure

by-pass valve

(closed)

Circular groove in
gear pump feeds all
piston inlet checks
(up to 6 sets)

Gear pump

Intake

Inlet check

Outlet check

1.0 FIRST STAGE, LOW PRESSURE - HIGH FLOW

1st stage = low pressure – high flow

• By-pass valve is closed.

• All low-pressure gear pump flow is routed through the high-pressure pistons inlet and outlet checks, (up to six sets) and then

out the pressure port.

Low Pressure, High Flow

Intake Oil

Summary of Contents for DC8143900

Page 1: ...igure 1 Pump Element Assembly typical High pressure port By pass port Safety relief valve By pass valve Intake Service Instructions English 10 15 Entretien Fran ais 16 24 Serviceanleitung Deutsch 25 3...

Page 2: ...1 16 Flush Plug 5 DA5999900SR 1 1 8 NPT Relief Valve Repair Parts List for Figure 2A Item Part Number Qty Description Items included in Repair Kit DC9280900SR Figure 2A Top Plate Assembly for Gear Red...

Page 3: ...55 1 Bearing Needle 40x47x12 3 DC9027776 1 Oil Lip Seal 40x52x5 4 A1006245 2 1 16 Flush Plug for 3 piston A1006245 3 1 16 Flush Plug for 2 6 piston 5 DA5999900SR 1 1 8 NPT Relief Valve 6 CCA625028 1A...

Page 4: ...irect Drive Motor Replaces original aluminum top plate assembly ZE ZG and ZW Series Date Codes A B and C 1 DC8350101 1 Top Plate 6 Piston steel DC8351101 1 Top Plate 2 and 3 Piston steel 2 DC9026155 1...

Page 5: ...2x20 6 DC4328350 1 Hex Cam Repair Parts List for Figure 3A see graphic above Item Part Number Qty Description 4 6 5 4 A A 1 Figure 3B Eccentric Assembly for Direct Drive ZE ZG and ZW Series Date Code...

Page 6: ...14 B1005203 1 O ring Viton 15 DC9244920 6 Piston Assembly 16 BSS5509D 6 Spring 17 DC9293016 2 Ball Nylon 3 16 Repair Parts List for Figure 4 Note part quantities will vary quantities for 6 piston sho...

Page 7: ...99 25 1 mm 10300 10800 ZG5xxxxx DD1123900SR 10KPSI DC9298920SR DC9222900SR 1600 1650 0 92 23 4 mm 10300 10800 ZG5xxxxx B DC8143900SR 10KPSI DC9296920SR DC9222900SR 1600 1650 0 92 23 4 mm 10300 10800 Z...

Page 8: ...cks up to 6 sets Gear pump Intake Inlet check Outlet check 1 0 FIRST STAGE LOW PRESSURE HIGH FLOW 1st stage low pressure high flow By pass valve is closed All low pressure gear pump flow is routed thr...

Page 9: ...ning gear pump oil returns to tank via the by pass valve Eccentric driven piston reciprocates to build high pressure Pressure port Safety relief valve Return to tank or to oil cooler Low pressure by p...

Page 10: ...ment d Bypass valve worn a Motor rotation reversed 3 phase only b Bypass valve is malfunctioning c Pump component parts are leaking d Oil intake screen is clogged with debris e Gear pump malfunction f...

Page 11: ...the bore With the piston ring assembly Fig 1 item 3 in your hands install one piston item 15 and spring item 16 into a piston bore While covering the outlet O ring item 13 with your thumb slowly push...

Page 12: ...ring Fig 4 item 1 5 Place check ball Fig 4 item 4 on outlet seat Fig 4 item 6 and apply 1500 lbs of force by using tool DC9505816 and a hydraulic press Note This will install and coin the outlet seat...

Page 13: ...rify the pressure remains steady 5 If the pump safety relief opens before reaching 85 of maximum rated pressure adjust the relief setpoint per 4 3 Safety Relief Valve Test 6 If the pressure fails to h...

Page 14: ...h a 0 15 000 psi pressure gauge to the VM 2 outlet Fully close the VM 2 valve 4 Operate the hand pump and monitor the pressure gauge Note the pressure at which the pump safety valve begins to relieve...

Page 15: ...nce position for 30 seconds 5 Stop the pump motor and unplug the pump from its electrical power supply 6 Calculate the flow rate by dividing the amount of oil collected in the cylinder or beaker and d...