1. Manuals
  2. Brands
  3. EGO Manuals
  4. Tools
  5. PHA7400E
  6. Repair manual

EGO PHA7400E Repair Manual

Arc lithium 56v
Hide thumbs Also See for PHA7400E:

Advertisement

Table of Contents

REPAIR MANUAL
PHA7400E
Version: A
Introduction date: 2024
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the PHA7400E and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for EGO PHA7400E

Summary of Contents for EGO PHA7400E

  • Page 1 REPAIR MANUAL PHA7400E Version: A Introduction date: 2024...
  • Page 2 CONTENTS About the tool Diagnostics Replacement...
  • Page 3 SECTION ABOUT THE TOOL Product features Wiring diagram...
  • Page 4 SECTION A.00 PRODUCT FEATURES WARRANTY DURATION DOMESTIC * Extended warranty period applies only after KEY FEATURES registering product on egopowerplus.eu/register within 30 days of purchase. Otherwise standard warranty periods apply. MODEL • Standard domestic = 2 years • Standard professional = 1 year Maximum Torque 74 Nm PROFESSIONAL...
  • Page 5 SECTION A.20 WIRING DIAGRAM LAYOUT...
  • Page 6 SECTION A.21 WIRING DIAGRAM COMPONENTS A. Battery pack connector B. Main PCBA C. Motor D. Speed Control PCBA Control the rotating speed E. Switch PCBA Start/stop switches...
  • Page 7 SECTION DIAGNOSTICS Inspection Quick Tests Internal Fuse Motor PCBA Motor...
  • Page 8 SECTION B.00 INSPECTION BATTERY LED STATUS Status Meaning Next actions Status Meaning Next actions Test: single press of battery power button Test: 5 second hold of power button Fully charged Battery condition ok Battery is reaching the end of 100% - 80% charged State of health at 60% service life.
  • Page 9 SECTION B.11 INSPECTION Status Indicator LED TOOL LED STATUS Status Meaning Next actions Test: Check the Status Indicator LED Ready for operation Overloaded / low temperature Check for obstructions or warm the tool Anti-kickback triggered Release trigger to reset Battery charge state too low Charge the battery immediately High temperature Allow the tool to cool down...

  • Page 10: Quick Test

    SECTION B.10 QUICK TEST Symptom / Test Next steps The auger fails to start The terminal that connects the right handle assembly and PCBA TEST: Insert a battery and press the throttle trigger. Inspect the status indicator LED 1. Check battery connection is secure. Status indicator is off 2.

  • Page 11: External Fuse

    SECTION B.20 EXTERNAL FUSE CHECK RESISTANCE VALUE OF FUSE 1. Set a multimeter in “resistance” measuring mode. 2. Contact two test leads on the terminals of the fuse. 3. Test the other 2 fuses in the same way. More than Fuse is good ...
  • Page 12 SECTION B.30 MOTOR PCBA MOSFET TEST (POSITIVE DIRECTION) 1. Set a multimeter in “diode” testing mode. 2. Apply the black test lead to the red wire in T1 connector. 3. Apply the red test lead to the M1 connector. Record the result. 4.
  • Page 13 SECTION B.31 MOTOR PCBA MOSFET TEST (NEGATIVE DIRECTION) 1. Set a multimeter in “diode” testing mode. 2. Apply the red lead to the black wire in T1 connector. 3. Apply the black test lead to the M1 connector. Record the result. 4.
  • Page 14 SECTION B.40 MOTOR TEST WINDINGS CONTINUITY Note: this test can produce a false “good” result, however “negative” results are 100% reliable. 1. Set multimeter to “resistance” measuring mode 2. Apply the test leads to the following motor terminals A+B | A+C | B+C 3.
  • Page 15 SECTION REPLACEMENT Important notice Replace the RIGHT HANDLE ASSEMBLY Replace the PCBA Replace the MOTOR ASSEMBLY and the GEAR CASE ASSEMBLY...
  • Page 16 SECTION C.10 REPLACE THE RIGHT HANDLE ASSEMBLY STEP 1 / 6 1. Before replacement, make sure the battery and earth/ice auger bit are removed. Disconnect the cable that connects the right handle assembly and PCBA.
  • Page 17 SECTION C.10 REPLACE THE RIGHT HANDLE ASSEMBLY STEP 2 / 6 2. Loosen 4 screws on the Mounting Plate by using 10mm socket wrench and 5mm allen key to separate right handle assembly. RIGHT HANDLE ASSEMBLY...
  • Page 18 SECTION C.10 REPLACE THE RIGHT HANDLE ASSEMBLY STEP 3 / 6 3. Remove the Nylon Cable Gland by using screwdriver. Nylon Cable Gland...
  • Page 19 SECTION C.10 REPLACE THE RIGHT HANDLE ASSEMBLY STEP 4 / 6 4. Insert the Nylon Cable Gland into the tube. Nylon Cable Gland...
  • Page 20 SECTION C.10 REPLACE THE RIGHT HANDLE ASSEMBLY STEP 5 / 6 5. Assemble right handle assembly and Mounting Plate with 4 screws by using 10mm socket wrench and 5mm allen key.
  • Page 21 SECTION C.10 REPLACE THE RIGHT HANDLE ASSEMBLY STEP 6 / 6 6. Connect the cable that connects the right handle assembly and PCBA.
  • Page 22 SECTION C.20 REPLACE THE PCBA STEP 1 / 23 1. Disconnect the cable that connects the right handle assembly and PCBA.

  • Page 23: Bottom Board

    SECTION C.20 REPLACE THE PCBA STEP 2 / 23 2. Loosen 5 screws on the Mounting Plate to separate the handle assembly and the power head. Bottom board Power head Handle assembly...
  • Page 24 SECTION C.20 REPLACE THE PCBA STEP 3 / 23 3. Loosen 9 screws shown below to separate the Right Housing. Right Housing...
  • Page 25 SECTION C.20 REPLACE THE PCBA STEP 4 / 23 4. Pull out the motor connector from the groove, then disconnect the cable connecting the Motor And Gear Case Assembly and PCBA, then take the motor and gear case assembly out of the housing. Motor And Gear Case Assembly...

  • Page 26: Cover Plate

    SECTION C.20 REPLACE THE PCBA STEP 5 / 23 5. Loosen 2 screws on the Fixing Board to separate the Covert Plate. Fixing Board Cover Plate...
  • Page 27 SECTION C.20 REPLACE THE PCBA STEP 6 / 23 6. Loosen 2 screws on the Cord Anchorage and separate it. Then Pull out the Control Electric Assembly. Cord Anchorage PCBA...
  • Page 28 SECTION C.20 REPLACE THE PCBA STEP 7 / 23 7. Control Electric Assembly Description. Fuse To right handle cable To Motor And Gear Case Assembly LED Indicator Electrode...
  • Page 29 SECTION C.20 REPLACE THE PCBA STEP 8 / 23 8. If the fuse is faulty, replace the fuse. Loosen 2 Hexagon Nuts on the Fuse, then separate the nuts, fuse and washers. Hexagon Nuts Spring Washer Fuse Plain Washer...
  • Page 30 SECTION C.20 REPLACE THE PCBA STEP 9 / 23 9. Install the Fuse by following the below order. Hexagon Nuts Spring Washer Plain Washer Cable Fuse Feet Plain Washer...
  • Page 31 SECTION C.20 REPLACE THE PCBA STEP 10 / 23 10. Insert the Control Electric Assembly into grove shown below. Make sure the end with fuse is on the bottom.
  • Page 32 SECTION C.20 REPLACE THE PCBA STEP 11 / 23 11. Insert the cable connecting with Motor And Gear Case Assembly into the groove shown below.
  • Page 33 SECTION C.20 REPLACE THE PCBA STEP 12 / 23 12. Insert the cable connecting with the right handle cable into the groove shown below and tighten 2 screws to fix the Cord Anchorage. Cord Anchorage...
  • Page 34 SECTION C.20 REPLACE THE PCBA STEP 13 / 23 13. Insert the cable connecting with the electrode into the groove shown below.
  • Page 35 SECTION C.20 REPLACE THE PCBA STEP 14 / 23 14. Insert the electrode into the groove shown below then cover with Sliding Block and its spring， then Install the Power Pack Button. Power Pack Button The groove Sliding Block...
  • Page 36 SECTION C.20 REPLACE THE PCBA STEP 15 / 23 15. Insert the LED indicator into grove with it facing down. Then cover with the Fixing Board and tighten 2 screws to fix it. Fixing Board...
  • Page 37 SECTION C.20 REPLACE THE PCBA STEP 16 / 23 16. Insert Cover Plate into following position groove.
  • Page 38 SECTION C.20 REPLACE THE PCBA STEP 17 / 23 17. Insert LED indicator cable into the groove.
  • Page 39 SECTION C.20 REPLACE THE PCBA STEP 18 / 23 18. Place the motor and gear case assembly into the housing as shown in below picture. Connect this terminal and put it into the groove...
  • Page 40 SECTION C.20 REPLACE THE PCBA STEP 19 / 23 19. Assemble the Right Housing by tightening 9 screws. Right Housing...

  • Page 41: Bottom Board

    SECTION C.20 REPLACE THE PCBA STEP 20 / 23 20. Align Pilot holes on the Bottom Board with Mounting Plate. Bottom Board...
  • Page 42 SECTION C.20 REPLACE THE PCBA STEP 21 / 23 21. Assemble the Screw and Washer by following order if they are separated accidently.
  • Page 43 SECTION C.20 REPLACE THE PCBA STEP 22 / 23 22. Make sure the Nameplate and Battery Pack Port are on the same side before tightening 5 screws on the Mounting Plate. Nameplate Battery Pack Port...
  • Page 44 SECTION C.20 REPLACE THE PCBA STEP 23 / 23 23. Connect the cable connecting the right handle assembly and PCBA.
  • Page 45 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 1 / 13 1. Disconnect the cable that connects the right handle assembly and PCBA.
  • Page 46 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 2 / 13 2. Loosen 5 screws on the Mounting Plate to separate the handle assembly and the power head. Bottom board Power head Handle assembly...
  • Page 47 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 3 / 13 3. Loosen 9 screws shown below to separate the Right Housing. Right Housing...
  • Page 48 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 4 / 13 4. Pull out the motor connector from the groove, then disconnect the cable connecting the Motor And Gear Case Assembly and PCBA, then take the motor and gear case assembly out of the housing. Motor And Gear Case Assembly...
  • Page 49 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 5 / 13 5. Loosen 3 screws set as shown in below picture to separate the motor assembly and gear case assembly.
  • Page 50 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 6 / 13 6. Replace a new motor assembly or a new gear case assembly. Insert the shaft of the motor into hole on the gear case assembly. And place the motor assembly on the gear case assembly as shown in the right two pictures. The shaft The hole This scre...
  • Page 51 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 7 / 13 7. Tighten 3 screws set to fix the motor assembly and the gear case assembly.
  • Page 52 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 8 / 13 8. Place the motor and gear case assembly into the housing as shown in below picture. Connect this terminal and put it into the groove...
  • Page 53 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 9 / 13 9. Assemble the Right Housing by tightening 9 screws. Right Housing...
  • Page 54 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 10 / 13 10. Align Pilot holes on the Bottom Board with Mounting Plate. Bottom Board...
  • Page 55 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 11 / 13 11. Assemble the Screw and Washer by following order if they are separated accidently.
  • Page 56 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 12 / 13 12. Make sure the Nameplate and Battery Pack Port are on the same side before tightening 5 screws on the Mounting Plate. Nameplate Battery Pack Port...
  • Page 57 SECTION C.30 REPLACE THE MOTOR ASSEMBLY AND THE GEAR CASE ASSEMBLY STEP 13 / 13 13. Connect the cable connecting the right handle assembly and PCBA.

Table of Contents