KMR 3447 Manual Del Usuario página 5

3447
6 TROUBLES AND REMEDIES
Disconnect nailer from hose before servicing. When connecting the tool, it must contain no fasteners.
TROUBLE
Air leaking from exhaust
port.
Blow does not take place.
Idle impact or corrugated
fastener are not fully driven
in.
Nailer operates too slowly.
Set of wear-and-tear parts
During repair replacement of parts the special grease (code no. 68 3868) must be applied to the surface of
the cylinder and the counter surfaces of the O-rings.
POSSIBLE CAUSE
O-rings (55 103, 55 104, 55 107,
55 109) are damaged or dirty.
Control parts move with difficulty
after long term storage.
Driver is jammed by a corrugated
fastener.
Tool exhausts considerably in the
lowest position of the piston, O-ring
(50 001), bumper (55 117), supporting
washer (55 112) worn or damaged. No
backstroke.
Tool without sufficient lubrication.
Air pressure too low.
Tool jumps.
Connection hose too long. Diameter
reduced in the air line or in the
maintenance unit (fall of pressure).
Piston completely (50 000) damaged.
Tip of driver worn.
O-ring (55 103, 55 104, 55 107, 55 109)
or valve slide (55 108) damaged or
requiring lubrication.
Safety bracket (55 006) or safety yoke
(30 003) sluggish.
Code No. 73 0154
REMEDY
Clean or replace parts.
Increase air pressure and make some
trial blows. Then reduce air pressure
immediatel .
Open the magazine and empty it.
Undo the cylinder screws (30 004,
30 006), remove the frontal guide
plate (30 002), remove the safety trip
(30 003) and take-out the jammed
corrugated fastener. Assemble the
safety trip in the correct position,
so that the lead-in on the upper
end engages with the safety catch
(55 006). After assembly of the
guide plate check that the safety trip
operates freely.
Replace damaged parts.
Clean the interior pieces, grease the
counter surfaces of the O-rings and
the surface of the cylinder. Check the
lubricator.
Adjust to correct air pressure (min. 6
bar / 0,6 MPa).
Press tool more firmly onto the
workpiece.
Investigate and correct trouble.
Replace piston. At the same time
check bumper (55 117) for wear.
Re-grind the face of the driver tip
such that it is square to its axis.
Replace damaged part and apply
grease to the counter surfaces.
Eliminate the jamming cause.
English I 5
KMR