Panasonic EY6813-U1 User manual

1 SCHEMATIC DIAGRAM 2
2 WIRING CONNECTION DIAGRAM 2
3 DISASSEMBLY/ASSEMBLY INSTRUCTIONS 3
4 TROUBLESHOOTING GUIDE 6
©2002 Matsushita Electric Works Ltd. All rights
reserved. Unauthorized copying and distribution is a
violation of law.
EY6813-U1
5 TRIAL OPERATION(after checking TROUBLESHOOTING
GUIDE.) 8
6 EXPLODED VIEW 9
7 REPLACEMENT PARTS LIST 10
Cordless Rotary Hammer
SPECIFICATIONS
CONTENTS
Page Page
ORDER NO.PTD0212U38C1
F16

1 SCHEMATIC DIAGRAM
2 WIRING CONNECTION DIAGRAM
2
EY6813-U1

■HOW TO DISASSEMBLE THE MAIN UNIT.
3 DISASSEMBLY/ASSEMBLY INSTRUCTIONS
Ref. No. 1A Procedure 1A Removal of the housing.
1. Set the hammering/drilling switching lever to the position and
the speed/blow mode selection lever in between "H" and "S"
position.
2. Loosen the support handle and take it out from the unit.
3. Pluck the chuck cover depressing the chuck handle.
4. Remove 15 housing screws.
For assembling
NOTE :
Make sure to attach the dust preventive clothes or filters on the
housings.
Ref. No. 1B Procedure 1A→
→→
→1B Removal of the motor brush assembly.
1. Loosen 2 screws.
3
EY6813-U1

■HOW TO DISASSEMBLE MAIN UNIT.
Ref. No. 2A Procedure 1A→
→→
→1B→
→→
→2A Removal of the switch.
1. Take out the heat sink from the housing by something like a plier.
2. Take out the battery holder from the housing.
3. Remove the trigger cover.
For assembling
NOTE:
Make sure to set the trigger cover into the groove of housing.
Ref. No. 2B Procedure 1A→
→→
→1B→
→→
→2A→
→→
→2B 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 return the spring into the groove of the motor brush.
Make sure to align the groove of motor case and the groove of
current plate. And set the largest groove of the motor case onto
the boss of housing.
4
EY6813-U1

■HOW TO DISASSEMBLE THE GEAR BOX BLOCK.
Ref. No. 2C Procedure 2A →
→→
→2B →
→→
→2C Removal of the gear box block.
1. Loosen 8 screws of the gear case.
2. Take out a steel ball pushing the chuck spring with the chuck
spring plate.
3. Remove the chuck spring, the chuck spring plate and the spindle
& piston assembly.
4. Remove the intermediate shaft assembly.
For assembling
NOTE :
Every time the gear box block is opened, use the new gaskets
and screws.
1. Assemble the bearing with the spindle assembly.
2. Fit O-ring onto the bearing. It is little loose.
3. Assemble the chuck spring and the chuck spring plate.
4. Insert a ball pushing down the chuck spring.
5.Insert the reciprocation bearing shaft into the hole of universal
coupling. Make sure two thrust plates should be set both side of
reciprocation bearing shaft one of each.
NOTE :
Greasing about 30g into the gear box block especially for the
connection area between reciprocation bearing and universal
coupling. In addition, hammer O-ring, inside of piston and
cylinder for output shaft block also need to apply.
Air compressed by the piston drives hammer. Take care to
protect the piston and hammer from contamination by dust.
5
EY6813-U1

(Refer to WIRING CONNECTION DIAGRAM)
4 TROUBLESHOOTING GUIDE
4.1. CHECK POINTS FOR ELECTRICAL PARTS.
< TROUBLE > < CHECK > < REMEDY >
Does not operate. <CHECK BATTERY PACK.> NO Replace battery
→If no less than 24V DC is available across the (+) and (-) →pack.
terminals after charging the rated charging time (45min.),
the battery pack is OK.
NOTE: The battery pack is sold separately as an optional
accessory. See the nearest sales dealer for
details. The battery pack has a limited life.
The pack should be replaced if;
-after being charged for the rated charging
time the battery voltage is less than 24V DC
or the usable time is extremely short.
-the battery leaks. Check battery for leaks
and terminals for corrosion.
↓OK
<CHECK TERMINAL CONNECTIONS BETWEEN NO Repair contacts or
MAIN UNIT AND BATTERY PACK.> →replace switch
Check for proper terminal contacts or if there is any foreign assembly.
substances around the battery terminals of battery holder.
↓OK
<CHECK MOTOR.> NO Replace motor
The motor normally operates with its white (+) and gray (-) →rotor and brush
lead wires connected to 24V DC. assembly.
Does not speed- <CHECK SWITCH.> NO Replace switch &
control but switch →Even if FET block is defective, it can not be replaced →FET block.
trigger works individually. Replace whole switch block.
properly.
6
EY6813-U1

4.2. CHECK POINTS FOR MECHANISM BLOCK.
< TROUBLE > < CHECK > < REMEDY >
Does not hammer <CHECK INTERMEDIATE SHAFT ASSEMBLY.> NO Replace
or weakness of →Check the wear condition of the change clutch and spring. →intermediate
hammering. shaft assembly.
↓OK
<CHECK RECIPROCATION BEARING.> NO Replace universal
Check the smooth action between reciprocation bearing →coupling.
and universal coupling.
↓OK
<CHECK PISTON AND HAMMER BLOCK.> NO Replace piston
Check the wear condition of inside of piston and hammer →assembly and
O-ring. greasing.
↓OK
<CHECK STRIKER.> NO Replace spindle
Check the smooth action of striker. →assembly.
↓OK
<CHECK INTERMEDIATE SHAFT ASSEMBLY.> NO Replace
Check the wear condition on tooth for change gears. →intermediate shaft
assembly.
Does not drill. <CHECK BEARING.> NO Replace H/D
→Check the condition of bearing for H/D handle. →handle.
↓OK
<CHECK O-RING.> NO Replace spindle
Check the wear condition for O-rings assembled with →assembly.
striker.
↓OK
<CHECK RECIPROCATION BEARING.> NO Replace
Confirm the coming and going operation when rotating the →intermediate shaft
intermediate shaft with DRILL mode. assembly.
It is OK if the reciprocation bearing does not operate.
↓OK
<CHECK STRIKER.> NO Replace spindle
Check the smooth action of striker. →assembly.
Does not change <CHECK BEARING.> NO Replace H/S
the speed. →Check the condition of bearing for H/S handle. →handle.
↓OK
<CHECK INTERMEDIATE SHAFT ASSEMBLY.> NO Replace
Check the wear condition for both change gear “H” and "S". →intermediate shaft
assembly.
7
EY6813-U1

5 TRIAL OPERATION(after checking TROUBLESHOOTING
GUIDE.)
5.1. HAMMER/DRILL
Confirm the action when setting the H/D handle to HAMMER mode.
Rotation with hammering when the drill bit touches something like stone, and power.
It is OK, if it takes about 7-10 seconds by 20kgf to hole ( 12.5X40) on the concrete (pressure strength 240kgf/cm2).
Confirm the action when setting the H/D handle to DRILL mode.
No hammering when the drill bit touches iron plate.
5.2. SPEED CONTROL
Change the rotation speed from 0-950 rpm in proportion to the amount of pushing level on switch trigger.
5.3. REVERSING LEVER
Confirm the action with setting the reversing lever to FORWARD or REVERSE.
5.4. ASSEMBLY
Confirm pressing the lead wires between ribs, tightening screws firmly and replacing the new gasket and screws for the gear
box block.
8
EY6813-U1

6 EXPLODED VIEW
9
EY6813-U1

7 REPLACEMENT PARTS LIST
NOTE:
*B=only available as set
*C=available individually
Ref.No. Part No. Part Name & Description Remarks Per Unit
1WEY6813K3078 HOUSING AB SET 1
2WEY6813H3117 CHUCK COVER 1
3WEY6813K3127 CHUCK HANDLE 1
4WEY6813L0427 BALL GUIDE 1
5WEY6813L1917 STEEL BALL 7 1
6WEY6813L0437 CHUCK SPRING STRIKE PLATE 1
7WEY6813L0917 CHUCK SPRING 1
8WEY6813L0367 O RING 35 1
9WEY6813L4058 SPINDLE ASSEMBLY 1
10 EY6812L0387 BEARING 1
11 WEY6813L4067 PISTON ASSEMBLY 1
12 EY6812L4627 HAMMER 1
13 EY6812L0977 O RING 1
14 WEY6813L1247 PISTON 1
15 WEY6813L1257 UNIVERSAL COUPLING 1
16 EY6812L0847 THRUST PLATE *B (2PCS/PK) 2
17 WEY6813L4077 INTERMEDIATE SHAFT ASSEMBLY 1
18 WEY6813L0467 THRUST PLATE 1
19 WEY6813L0017 GEAR CASE A 1
20 WEY6813L0027 GEAR CASE B 1
21 WEY6813L0987 GASKET AB SET 1
22 WEY6813L9557 ALUMINUM TIGHT SCREW (M4X16) *B (5PCS/PK) 8
23 WEY6813L0357 O RING 1
24 WEY6813L4627 MOTOR ROTOR ASSEMBLY 1
25 WEY6813L4987 MOTOR CASE ASSEMBLY 1
26 WEY6813L4637 MOTOR BRUSH ASSEMBLY 1
27 WEY6813L0447 CURRENT PLATE 1
28 EY574B9037 P TIGHT SCREW (K3X20) *C 2
29 WEY6813L4157 SWITCH ASSEMBLY 1
30 EY6225L6027 SEMS SCREW (M3X5) *C 2
31 WEY6813Y4607 H/D HANDLE 1
32 WEY6813Y4617 H/S HANDLE 1
33 WEY6813L0377 O RING *C 2
34 WEY6813L0387 O RING *C 15.5 2
35 WEY505B6967 STEEL BALL *B (5PCS/PK) 2
36 WEY6813L1407 CLICK SPRING *B (2PCS/PK) 2
37 WEY6813L0457 SNAP RING *B (2PCS/PK) 2
38 WEY6813L3137 TRIGGER COVER 1
39 WEY6813L3147 F/R HANDLE 1
40 WEY6813D3157 RELEASE LEVER 1
41 EY6812L0177 SPRING A 1
42 EY6811K3817 BATTERY FIXING METAL ASSEMBLY 1
43 EY3503K6208 TAPPING SCREW (K4X20) *C 15
44 WEY6813K4627 AUXILIARY HANDLE 1
45 WEY6813K4637 SUPPORT HANDLE 1
46 WEY6813H7727 DEPTH GAUGE 1
47 EY6812T7918 BIT GREASE 1
-WEY6813X5517 THIXO GREASE 1
-WEY6813K8108 OPERATING INSTRUCTIONS 1
** Battery Pack, Dust Collecting Cup and Tool Case are available as an optional accessory.
See the nearest sales dealer for details.
*** For replacement parts of charger, see the charger service manual.
Charger complete set is available as an optional accessory. See the nearest sales dealer for details.
10
EY6813-U1