2
Form 16575318-Edition 1
WARNING
•
Maintenance procedures have the potential for severe shock hazard and should be performed by qualified personnel.
•
Always wear eye protection when operating or performing maintenance on this tool. Always turn off the electrical supply and disconnect the
electrical cord before installing, removing or adjusting any accessory on this tool, or before performing any maintenance on this tool.
Disassembly
Disassembly of the Housing
1.
To disassemble the Housing (1 or 44), begin by unscrewing the
connection ring to remove the Power Cord (6 or 55).
2.
Use a 29mm open end wrench to unscrew the coupling (56 or 6).
NOTICE
This is a left-hand thread.
3.
Using a #1 phillips screwdriver, remove the Housing
Screws (2 or 45).
4.
Separate the Housing by lifting the half with the three screw holes. If
necessary, use a small screwdriver to pry the Housing apart. Refer to
Dwg. TPD1816.
(Dwg. TPD1816)
5.
Remove the Trigger (17 or 51), Trigger Spring (18 or 52) and the
Trigger Pin (19 or 53).
6.
Remove the Housing Bushing (7 or 54) from the back of the tool.
Disassembly of the Clutch Housing & Gear Case
1.
Lift the Clutch Housing (53 or 8), Gear Case (37 or 22) and Motor
Assembly from the Housing. While holding firmly, pull the Gear Case
away.
2.
Tap the end of the Gear Case on the work bench to remove the
Motor Clamp Spacer (36 or 23) and the Gear Head
Assembly (38 or 20).
3.
Remove the Gear Head Planet Gears (39 or 21) from the Gear Head.
4.
Remove the Push Rod (46 or 17) from the Gear Case. Fit the two
notches at the rear end of the Gear Case Fixture part
no. EL0410B-J37. Refer to Dwg. TPD1813.
(Dwg. TPD1813)
5.
Using a slotted screwdriver, remove the Front Bit Retainer Retaining
Ring (60 or 3) from the Bit Holder Assembly (48 to 12).
6.
Remove the Bit Retainer Sleeve (58 or 4) and Bit Retainer Sleeve
Spring (59 or 5).
7.
Remove the two Bit Retaining Balls (50) from the Bit Holder by
tapping the Bit Holder on the work bench.
NOTICE
Model EL0109 has only one Bit Retaining Ball (11).
8.
Unscrew and remove the Clutch Adjusting Ring (57 or 1) from the
Clutch Housing. For Model EL0109, also remove the Bit Retainer
Spring (2).
9.
Remove the three Clutch Adjusting Pins (54 or 7) from the Clutch
Housing and the Bit Retainer Sleeve Spring.
10. Remove the Bit Retainer Retaining Ring (55) using external snap ring
pliers.
11. Using a 21mm open end wrench on the flats of the Clutch Housing
Assembly, unscrew and remove the Clutch Housing.
NOTICE
This is a left-hand thread.
12. Remove the Clutch Spring Plate (52 or 9) and the Clutch
Spring (51 or 10).
13. Lift the Bit Holder Assembly from the Gear Case.
For Model EL0109,
remove the Cam Guide (13) and the two Cam
Guide Balls (14) from the Bit Holder.
For Models EL1007 and EL0410,
remove the two cam Guide
Balls (49) and Cam Guide Sleeve (47) from the Bit Holder
Assembly (48).
14. Remove the Gear Case from the Gear Case Fixture. Turn it over and
push the Spindle Assembly (40 or 18) from the case.
15. Remove the Spindle Planet Gears (41 or 19) from the Spindle
Assembly.
16.
For Model EL0109,
remove the Cam (16) and Cam Guide Sleeve
Assembly (15) from the bearing.
For Model EL1007,
remove the Cam Collar (45), the Cam (43), two
Camp Pins (44) and the Thrust Washer (42).
Cleaning and Inspection of the Tool
1.
Clean all mechanical parts you have disassembled in an approved
safety solvent in a well-ventilated area. Inspect for damage or wear.
2.
For all Models,
inspect the Bit Holder Assembly. If the bearing does
not rotate smoothly, replace the Bit Holder Assembly.
3.
Inspect the Cam. If it is worn, replace it.
4.
For Model EL1007,
inspect the Cam Pins (44). If they are worn,
replace them.
5.
For Model EL0109,
inspect the Cam Guide Sleeve. If the bearing of
the Cam guide Sleeve does not rotate smoothly, replace it.
6.
Inspect all the Gear head Planet Gears. If the teeth are worn or
damaged, replace them.
7.
Inspect the Gear Case. If the inner gear teeth are worn or damaged,
replace them.
8.
Inspect the Spindle Assembly. If the bearing does not rotate
smoothly, replace the Spindle Assembly.
Disassembly and Inspection of the motor
1.
Remove the Motor Assembly, the Plunger (13 or 37) and the Plunger
Spring (14 or 38) from the Housing.
2.
Using a thin slotted screwdriver, release the tension on the Brush
Spring (25 or 35) and remove the two Brush Assemblies (24 or (33)
from the Rear End Plate (23 or 32).
3.
Carefully pull the copper wires to remove the Brush Assemblies from
the Rear End Plate.
NOTICE
Be careful not to damage the wires.