Inspection And Maintenance - Hitachi VH-650 Instrucciones De Manejo

(2) Close the cover after confirming that the nails are
loaded in the magazine.
(3) Grip the nail guide and knob with the fingers. Then
depress the knob to open the nail guide towards the
left. (See Fig. 2)
(4) Extend the nail line from the magazine. Insert the first
nail between the two pawls of main feeder so that the
nail head is passed into the guide slot.
To close smoothly the nail guide, never insert the first
nail in front of the pawl of main feeder. (See Fig. 3)
(5) Grip the nail guide and knob. Then depress the knob
and turn the nail guide to the right. Nails are loaded by
adopting the above procedures.
CAUTION
To prevent unitentional operation, never touch the
trigger or place the top end of the push lever on a work
bench or floor. Also, never face the nail outlet toward
any part of a person.
HOW TO USE THE NAILER
CAUTIONS:
Never use the head or body of this device as a
hammer.
Take precautions to ensure the safety of persons in
the vicinity during operation.
NOTE
That the final nail may be dropped or bent.
1. Nailing procedures
(1) Intermittent nailing
Depress the nail outlet onto the desired point; then
pull the trigger to drive a nail in a single shot. (See Fig.
4)
CAUTION
This tool will bounce and shoot several nails instead
of just one in rapid succession when strongly pressed
flush against a surface or when using on hard materials.
In such cases, fire the nails by squeezing and quickly
releasing the trigger.
(2) Push lever
When depressing the nail outlet, be sure to fully lift the
push lever (see Fig. 4) to release the safety lock. Thus,
nails cannot be driven without releasing the safety
lock even though the trigger is pulled.
(3) Continuous nailing
First, pull the trigger. Then depress the devise onto the
desired position to automatically drive nails. (See Fig.
5).
CAUTION:
Exercise care when nailing corners of lumber. When
continuous nailing corners of lumber, a nail may go
astray or break through the corner.
NOTES:
Precautions on no-load operation
Sometimes nailing will continue after driving in all
nails previously contained in the magazine.
This is termed "no-load operation". Such operation
may deteriorate the bumper, magazine, and nail feeder.
To avoid no-load operation, occasionally confirm the
amount of remaining nails. On the other hand, all nails
should be removed after using this nailer.
After completing operation, put into the body about
2cc oil through the hose joint to protect the tool from
rust.
Under low temperature conditions, the machine
sometimes does not operate correctly. Always operate
the machine at the appropriate ambient temperature.

INSPECTION AND MAINTENANCE

CAUTION:
Be sure to disconnect the hose during cleaning
jams, inspection, maintenance and cleaning.
1. Inspection and maintenance
Periodically inspect the device.
(1) Remove the four hexagon socket hd. bolts securing
the exhaust cover and remove the exhaust cover.
Then, cylinder, piston, and other parts can be removed
in respective assembly groups.
Wipe the drive bit, the piston sliding part and the body
interior with a cloth to remove deposited dirt.
(2) Confirm that the piston damper offers normal
operation. A damaged piston damper may cause
damage to other component parts.
(3) Carefully check the O-ring for wear while
disassembling. A worn or
deteriorate overall performance. Replace a worn or
damaged O-ring with new one.
(4) Prior to reassembling the device, apply grease (Attolub
No. 2 Grease) to the O-ring. Also, lubricate the device
with the recommended oil.
2. Check on mounting screws for each part
At regular intervals check every part for loose
mounting screws and whether or not there are any
air leaks. Retighten any loose screws. Operating the
equipment with loose screws untightened will incur
a hazard.
3. Inspecting the drive bit
If the top end of the drive bit is slightly rounded to an
extent that nail heads slightly float above the work
surface, or the nails are often bent, remove the drive
bit and finish off the top end with a file or grinder.
(1) Removing procedures
(a) Remove four hexagon socket hd. bolts to
disassemble the exhaust cover, whereby the piston
is exposed. (See Fig. 6)
(b) Insert an appropriate rod into the nail outlet to
withdraw the piston from the opposite side. (See
Fig. 7)
(2) Grinding procedures
(a) When grinding the top end by using a grinder, to
avoid wear, gradually grind it while cooling the
grinding part with water. Excessive grinding may
shorten the Nailer service life. (See Fig. 8)
(b) If nail heads still float above the work surface even
though the top end is ground, replace the drive bit
with a new bit. (Replace the drive bit when
projection beyond the top of tail cover is reduced
to approximately 4.5-5 mm (.177" – .20").) Drive
bits are available from the dealer where you ordered
the nailer.
(3) Reassembling procedures
Effect reassembling procedures in reverse order to
those of disassembling. Insert the drive bit with the
semicircular groove side facing the handle side.
Confirm that the drive bit is fully inserted the nail
outlet. Then reassemble the exhaust cover. Finally
apply a thin coat of grease (Attolub No. 2 Grease) to
the O-ring and interior surface of the cylinder. (See
Fig. 9)
English
damaged O-ring may
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