Panasonic EY7880 - 28.8V ROTARY HAMMER Service Manual
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Panasonic EY7880 - 28.8V ROTARY HAMMER, © 2007 Matsushita Electric Works, Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. Order Number PTD0709X41CE Cordless Rotary Hammer Model No. EY7880 Europe Oceania TABLE OF CONTENTS PAGE PAGE 1 Warning-------------------------------------------------------------- 2 2 Specifications ----------------------------------------------------- 2 3 Troubleshooting Guide ----------------------------------------- 3 4 Disassembly and Assembly Instructions ---------------- 7 5 Wiring Connection Diagram -
2 1Warning Caution: • Pb free solder has a higher melting point that standard solder; Typicall the melting point is 50 - 70°F (30 - 40°C) higher. Please use a soldering iron with temperature control and adjust it to 750 ± 20°F (400 ± 10°C). In case of using high temperature solder- ing iron, please be careful not to heat too long. • Pb free solder wi
Panasonic EY7880 - 28.8V ROTARY HAMMER, 7 4 Disassembly and Assembly Instructions 4.1. How to Disassemble the Main Unit. Ref. No. 1A Procedure 1A Removal of the chuck handle. 1. Set the hammering/drilling switching lever to the position . 2. Loosen the support handle and take it out from the unit. 3. Pluck the chuck cover depressing the chuck handle. NOTE: If it is hardly to take out, use the slotted-head screwdriver. 4. Remove the chuck handle. 5. Take out a steel ball pushing the chuck spring with the chuck spring plate. 6. Remove the chuck spring plate and the chuck spring. Ref. No. 1B Procedure 1A → 1B Removal of the housing. 1. R
Panasonic EY7880 - 28.8V ROTARY HAMMER, 8 Ref. No. 1C Procedure 1A → 1B → 1C Removal of the switch. 1. Loosen two screws to remove the lead wires from motor assembly. NOTE: Do not lose the nut. 2. Take out the switch from the housing. 3. Take out the LED cover. For assembling NOTE: Do not push the area where marked the arrow in order to prevent the breakage. Ref. No. 1D Procedure 1A → 1B → 1C → 1D Removal of the motor assembly. 1. Hitch the brush spring to the frame by something like a forceps and take the motor brush assembly with the switch out from the motor assembly. 2. Take out the rotor and the current plate from the motor case. For assembling NOTE: Make sure to retur
Panasonic EY7880 - 28.8V ROTARY HAMMER, 9 Ref. No. 1C Procedure 1A → 1B → 1C → 1D → 1E Removal of the power shaft assembly. 1. Remove the piston applying power spring. 2. Take out the power shaft assembly. 3. Remove the snap ring. 4. Slide the jig (plate) into between the washer and the gear case and hold it by a vise. 5. Tap the top of spindle block with a plastic hammer to take out the spin- dle and clutch block assembly. 6. Take out the snap ring on the rear side of the bearing. 7. Take out two pins by using absorption force about 30N
Panasonic EY7880 - 28.8V ROTARY HAMMER, 10 4.2. How to Reassemble the Main Unit. Ref. No. 2A Procedure 2A Assembly of gear case assembly. 1. Set the jig (bearing cap) into the clutch case and hold it with a vise in order to take out the bearing. 2. Assemble the bearing with the spindle assembly. 3. Set the snap ring. NOTE: It has own direction for reassembly. Place the rounded face of snap ring to the clutch case side. 4. Fit O-ring onto the bearing. 5. Place the thrust plate on the end of intermediate shaft assembly. 6. Insert the reciprocation bearing
Panasonic EY7880 - 28.8V ROTARY HAMMER, 11 Ref. No. 2B Procedure 2A → 2B Assembly of gear case assembly. 1. Assemble the chuck spring and the chuck spring plate. 2. Insert a ball pushing down the chuck spring. 3. Inject an adhesive such as Cemedine SX720WH and wipe off to bury the gap between the gear case A and B in order to prevent the leakage of grease inside of gear box. NOTE: Make sure an adhesive is completely dried before assembling the driving block into the houshing.
Panasonic EY7880 - 28.8V ROTARY HAMMER, 12 Ref. No. 2C Procedure 2A → 2B → 2C Assembly of driving block into housing. 1. Set the H/D handle to HAMMER mode. 2. Set the H/S handle in between HIGH and SOFT model. 3. Insert the gear case assembly into the housing. 4. Connect the switch assembly with motor lead wires.
Model No. : EY7880 Parts List Safety Ref. No. Part No. Part Name & Description Q'ty Remarks 1 WEY7880K3079 HOUSING AB SET 1 (for EUROPE) 1 WEY7880K3070 HOUSING AB SET 1 (for OCEANIA) 2 WEY6813H3116 CHUCK COVER 1 3 WEY6813K3126 CHUCK HANDLE 1 4 WEY6813L0426 BALL GUIDE 1 5 WEY6813L0436 CHUCK SPRING STRIKE PLATE 1 6 WEY6813L0916 CHUCK SPRING 1 7 WEY7880L430
Panasonic EY7880 - 28.8V ROTARY HAMMER, Model No. : EY7880 Parts List Safety Ref. No. Part No. Part Name & Description Q'ty Remarks 43 WEY7880L4987 MOTOR CASE ASSEMBLY 1 44 WEY7880L4637 MOTOR BRUSH ASSEMBLY 1 45 WEY6261B6026 SCREW 2 (K3-6) 46 WEY7880H4617 H/S HANDLE 1 47 WEY7880H4607 H/D HANDLE 1 48 WEY7880L0387 O RING 2 (φ15.6) 49 WEY6813L1406 CLICK SPRING 2 (2PCS/PK) 50 WEY7880B6967 STEEL BALL 2 (φ4) 51 WEY7880L0377 O RING 2 52 WEY6813L0456 SNAP RING 2 (2PCS/PK) 53 WEY7880L0257 LOCK LEVER 1 54 WEY7880L0507 PIN 1 (3*34) 55 WEY7880L0167 PLATE SPRING 1 56 WEY7880
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