Inspection And Maintenance - Hitachi Koki NV 75HMC Mode D'emploi

Reference Examples
Wood Length of Nails
thickness to be Used
20 mm 32 mm
25 mm 38 mm
30 mm 45 mm
35 mm 50 mm
45 mm 57 mm
50 mm 65 mm
Length of Nails
to be Used
NOTE:
The nails will not be driven in sufficiently if the
concrete intrusion depth is deeper than 15 mm.
5. Adjusting the nail-driving depth
CAUTION
When making adjustments, be sure remove your
finger from the trigger. When making adjustments,
be sure that the nail outlet is not facing downward
and that body parts or other people are not in the
path of the nail outlet.
Adjusting the adjuster (Fig. 14)
Carry out test driving. If the nails are too deep, turn
the adjuster to the shallow side (
If the nail depth is too shallow, turn the adjuster to
the deep side ( mark) (See Fig. 14, 15).
Depth is changed 1 mm with each rotation of the
adjuster.
NOTE:
When adjusting the adjuster, it does not rotate more
than 3 mm from the deepest point where a nail goes
down. Do not rotate the adjuster by force beyond
that point.
The nail-driving depth can also be adjusted by
changing the air pressure used. Carry this out together
with movement of the adjuster. Using a high air
pressure that does not match the nail-driving
resistance will shorten the life of this nailer.
6. Cutting off the sheet
Tear off the output sheet in the direction of the arrow
when using the sheet collated nails (Fig. 16).
7. Using the blow nozzle
CAUTION
Be sure to release your finger from the trigger before
using the blow nozzle.
Do not point the air outlet at a person.
Do not use the blow nozzle with the push lever left fit.
This Nailer has a blow nozzle that blows out wood
shavings which occur during work.
Press the knob with your thumb to use the blow nozzle
(See Fig. 17).
Concrete
Intrusion Depth
Approx. 12 mm
Approx. 13 mm
Approx. 15 mm
Approx. 15 mm
Approx. 12 mm
Approx. 15 mm
Wood thickness
Concrete Intrusion
Depth 10 to 15 mm
mark).
NOTE:
When the blow nozzle is used for a long time, the
nailing force may degrade temporarily. In this case,
allows the air supply pressure to stabilize before
starting work.
Oil in the body or drained water from the compressor
can sometimes spout out of the air outlet. It is
recommended that you once conduct a test before use
and see if such phenomenon happens at an environment
where spouted oil will cause any inconvenience.
8. How to use nosecap
CAUTION
Remove the hose from the nailer and release the
compressed air before installing or removing the
nosecap to prevent accidental nail ejection.
Attach the nose cap on the tip of the push lever when
you wish to protect the surface of wood, etc., from
scratches.
(1) Attaching and detaching nose cap
The nose cap can be attached by simply pressing it
into the push lever.
Press it in until a convex part inside the nose cap
enters into a hole of the push lever. (Fig.18)
For removal, insert a thin rod such as a screw driver
into the gap on the back of the push lever, and then
pull it out.
(2) Safekeeping of nose cap
Put the removed nose cap in a space behind the
magazine for safekeeping. (Fig.19)

INSPECTION AND MAINTENANCE

CAUTION
Be sure to disconnect the hose during cleaning jams,
inspection, maintenance and cleaning.
1. Countermeasure for nail jamming
(1) Remove the nail roll from the magazine, open the
nail guide, insert a rod into the outlet and tap the rod
with a hammer (Fig. 20).
(2) Remove the jammed nail with slotted screwdriver
(Fig. 21).
(3) Cut off the defective part of the steel wire which links
the nails with cutting nippers, correct the deformation,
then load the nail roll in the magazine.
(4) In case of frequent jams, consult the Authorized
Service Center from which you bought this machine.
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 push lever
Check if the push lever can slide smoothly (Fig. 22).
Clean up the sliding area of the push lever and use the
provided oil for lubrication from time to time.
Lubrication enables smooth sliding and simultaneously
serves to prevent the formation of rust.
4. Inspecting the feeders
(1) Occasionally clean the knob sliding part and then
apply the recommended oil (See Fig. 22).
(2) Open the nail guide and remove dust, etc., as shown
in Fig. 23. Apply lubricant to the sliding groove of the
feeder and shaft. Check the nail stopper (A) and nail
stopper (B) slide smoothly by pushing them with
your finger.
English
14