Use and Care Manual

English
11
6. Press the hard rubber washer (s) back on to the securing pin.
DCN6901 RETURN SPRING REPLACEMENT KIT
WARNING: For your own safety, read the tool instruction manual before using any accessory.
Failure to heed these warnings may result in serious personal injury and damage to the tool and the
accessory. When servicing this tool, use only identical replacement parts.
NOTICE: All the mechanical parts of the spring replacment kit are shown for convenience and
verification of inclusion. The kit also contains a packet of Loctite adhesive for use in step8. Refer to
Fig. 20.
TO CHANGE BROKEN RETURN SPRINGS:
NOTE: Springs should be replaced as a pair, using only the correct
DeWALT
accessory spring
replacement kit.
1. Using the key (K) provided, loosen the two screws (aa) on either side of the unit. Refer to
Figure15.
2. Remove the return system (bb) from the unit. Refer to Figure 16.
FIG. 15 FIG. 16
K
aa
bb
3. Slide the spring rail clip (cc) off of the spring rail (dd). Refer to figure18.
4. Twist and remove the Spring Bumper (ee) and remove the washer (ff) and return spring (gg). Refer
to figure 18.
5. Mount the new return spring and washer on to the spring rail (dd). While compressing the spring
with the washer near the opposite end of the rail, twist on the new spring bumper until it is past
the groove (hh) for the spring rail clip.
6. Mount the new spring rail clip securely and position the bumper against the clip.
7. Repeat steps 3–6 for the second spring.
NOTE: Check the return of the profile by sliding the profile up the spring rail and letting it go. It
should return due to the force from the springs.
8. Slide the return system (bb) back into the unit. It is important to try the alignment of the profile
and the flywheel before screwing the return system back on to the unit. This can be done by
connecting a battery and pushing then releasing the nose of the unit against a bench or hard
surface. This will start the motor spinning.
NOTE: When the profile and the flywheel are correctly aligned, you will hear the motor coast back
down from full speed. If the profile and the flywheel are not correctly aligned, the motor it may not
start up, may slow down much faster than normal along with a loud grinding noise from the unit.
If this happens remove and reseat the return system.
9. Once the return system is correctly seated, open the provided sachet of Loctite
®
* and apply a
small amount on the thread of the two screws (aa) and remount the two screws using the key
and tighten securely.
MAINTENANCE
WARNING: To reduce the risk of serious personal injury, disconnect battery pack from
tool before making any adjustments, changing accessories, servicing, or moving the tool.
Such preventative safety measures reduce the risk of starting the tool accidentally.
Daily Maintenance Chart
ACTION Clean magazine, pusher, and contact trip mechanism.
WHY Permits smooth operation of magazine, reduces wear, and prevents jams.
HOW Blowing off the tool with compressed air is the most effective way to clean the tool. The
use of oils, lubricants periodically or solvents is not recommended as they tend to attract
debris and/or damage the plastic parts of the tool.
ACTION Before each use, check to ensure all screws and fasteners are tight and undamaged.
WHY Prevents jams and premature failure of tool parts.
HOW Tighten loose screws using the appropriate hex wrench or screwdriver.
Cleaning
WARNING: Blow dirt and dust out of all air vents with clean, dry air at least once a week. To
minimize the risk of eye injury, always wear ANSI Z87.1 approved eye protection when performing
this.
NOTICE: When cleaning, use only a damp cloth on plastic parts. Many household cleaners contain
chemicals which could seriously damage plastic parts. Also, do not use gasoline, turpentine, lacquer
or paint thinner, dry cleaning fluids or similar products which may seriously damage plastic parts.
Never let any liquid get inside the tool; never immerse any part of the tool into a liquid.
Lubrication
NOTICE: NEVER spray or in any other way apply lubricants or cleaning
solvents inside the tool. This can seriously affect the life and performance of the
tool.
DeWALT
tools are properly lubricated at the factory and are ready for use.
However, it is recommended that, once a year, you take or send the tool to a
certified service center for a thorough cleaning and inspection.
Accessories
WARNING: Since accessories, other than those offered by
DeWALT
, have not been tested with
this product, use of such accessories with this tool could be hazardous. To reduce the risk of injury,
only
DeWALT
, recommended accessories should be used with this product.
DCN6931 TIP REPLACEMENT (FIG. 14)
Over time - the metal connecting tip (M) will wear and eventually
need replacement.
WARNING: For your own safety, read the tool instruction
manual before using any accessory. Failure to heed these
warnings may result in personal injury and serious damage to the
tool and the accessory. When servicing this tool, use only identical
replacement parts.
TO REPLACE METAL CONNECTING TIP:
1. Using a flathead screwdriver, gently push the hard rubber
washer (P) off of the tip securing pin(Q).
2. Slide the pin (Q) out of the nailer nose.
3. Pull the worn/damaged tip out of the nose.
4. Insert a new metal connecting tip.
5. Re-insert the securing pin (Q) through the nose and metal connecting tip.
Q
M
P
FIG. 14