General Information
The Marson ValueRivet™
V-4
pneumatic/ hydraulic riveting tool is
designed to set rivets in all materials in sizes from 3/32” to 1/4”
diameter. Model
V-4
is supplied with 1/4” NOSEPIECE (1A)
installed in the operating position. Standard nosepieces for 3/32”
(1B), 1/8” (1C), 5/32” (1D), and 3/16” (1E) diameter rivets are
included among the accessories supplied with the tool.
The Maximum Air Pressure is 95 PSI At Tool.
Specifications
Rivet Setting Capacity 1/4” diameter
Traction power 3055 lbs
Operating air pressure 85-95 PSI
Air consumption 5 CFM
Air Inlet 1/4” N.P.T.
Overall height 12”
Net weight 4.2 lbs.
Accessories
The
V-4
is packaged in a compartment storage container.
Wrenches needed to service the tool are included. Special SPANNER
(41) and SPANNER GAUGE (40) has a cut-out gauge used in
adjusting the tool as described below.
Also included
:
Safety Cap (26) to catch ejected mandrels when
attached to the back of the tool.
Maintenance
In order to achieve maximum efficiency and economy, the Marson
V-4
pneumatic/hydraulic riveting tool should be serviced and
maintained on a regular basis. No special skills or tools other than
the ones provided are needed to properly service and maintain the
device.
The operative parts of the tools requiring regular inspection and
maintenance are as follows:
1.
The JAWS (5) should be periodically inspected, cleaned, and
when necessary, replaced with new jaws (see Cleaning and
Changing Jaws under Procedures below).
2.
The FRAME (17) of the tool should be checked periodically to
ensure that the oil level is maintained and that there are no leaks
or breakdowns in the seals. (See Repair sections under
Malfunction for procedures).
Maintenance Procedures
1. Cleaning and Changing Jaws
IMPORTANT – Disconnect the V-4 from the air pressure line
before proceeding with inspection or repairs
. Use SPANNER (41)
to remove FRAME HEAD (13) and JAW CASE FRONT (3, 31). At
the same time, hold the JAW CASE REAR (4) with the SPANNER
GAUGE (40). Clean jaws with solvent or a steel brush. Replace
with new jaws if excess wear is apparent. Always coat outer or
smooth surface of jaws with an oil film before assembling.
Reassemble by reversing order of above procedure. It is important
that JAW PUSHER (7, 8) engages the conical parts of the JAWS.
DO NOT CHANGE THE POSITION OF PARTS (4) and (14).
If
these parts are inadvertently changed, see readjustment instructions
under “Malfunction.”
2.
Changing Nosepiece
Connect
V-4
to air pressure and press TRIGGER (45) until nosepiece
has been removed and new nosepiece fully tightened. When
TRIGGER (45) has been released and tool is at rest there should be a
circular opening visible in the nosepiece.
Malfunction
1.
Mandrel gripped by JAWS but rivet does not set and mandrel
does not break:
CAUSE:
Low air pressure or loss of oil.
REPAIR:
Increase air pressure but do not exceed 95 PSI at tool.
Make sure all fittings including FRAME CAP (24) and FRAME
HEAD (13) are tight. If malfunction persists, add oil as follows:
Disassemble AIR CYLINDER (33), FRAME (17
)
and FRAME
HEAD (13). Before adding oil, check to be sure OIL PISTON (18) is
at the bottom of its stroke, by hand pulling JAW CASE FRONT (3,
31) away from FRAME (17). OIL PISTON (18) should bottom its
stroke automatically when removing FRAME HEAD (13). If JAW
CASE FRONT (3, 31) moves downward by hand power, then
RETURN SPRINGS (21, 22) may need replacing. Care must be
exercised to avoid damage to O-RINGS (15, 16). Pour MARSON
OIL No. 39105 or equivalent into FRAME (17) while tool is upside
down. Before assembling also check for oil appearing in AIR
CYLINDER (33) or FRAME HEAD (13). If oil is found in any of
these areas, replace O-RING (15, 16, 29) as needed. Reassemble
tool.
2.
Mandrel does not enter nosepiece OR fails to eject.
CAUSE:
JAW CASE REAR (4) and NUT (14) have changed
position.
REPAIR:
Adjust so that the distance between the plane underside of
the FRAME (17) and the front edge of the securely-assembled JAW
CASE FRONT (3, 31) is approximately
”
. This can be measured
with the cut-out gauge on SPANNER GAUGE (40) before
assembling FRAME HEAD (13).
3.
Tool takes more than one stroke under ideal conditions to set
rivet and break mandrel.
CAUSE:
Insufficient oil.
REPAIR:
See repair instructions under Malfunction, 1.
CAUSE:
Not enough air pressure.
REPAIR:
Increase air pressure but do not exceed 95 PSI at tool.
CAUSE:
Loose nosepiece.
REPAIR:
Tighten nosepiece with SPANNER (41).
CAUSE:
JAW CASE REAR (4) too far forward.
REPAIR:
See procedure under Section 2 above.
44 Campanelli Pkwy.
Stoughton, MA. 02072
Tel. (800) 344-9664
Fax (800) 644-2177
Safety glasses should be worn at all times while operating
tool.