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TROUBLESHOOTING
If a problem occurs, check the following.
If the problem persists after checking the items in the table below, contact your nearest “LOBSTER”
dealer or direct to us.
In making any enquires about this product or requests for repair work, first check the
troubleshooting items below, and then make a note of the model number, the usage conditions and
the trouble symptoms in as much detail as possible. If you can provide this kind of information, it
will contribute to reducing the amount of time required for delivery or repairs to be completed.
The rivet does not go
in, or the shaft does
not come out after
riveting.
Number of switch
operations increases
before riveting is
complete.
Incorrect combination of replacement parts
being used.
Nosepiece or frame head is loose.
Jaw case is incorrectly assembled.
Contact surfaces between the jaws and the
jaw case head (AR-011S: Jaw case) are not
smooth.
The inside of the cylinder is dirty so that the
air piston cannot return to its proper position.
Oil filling was not performed correctly, so that
there is excess hydraulic oil inside the tool.
The rivet length is not correct for the
workpiece thickness.
Compressor air pressure is incorrect.
Jaw case is incorrectly assembled.
Jaws are worn.
Insufficient hydraulic oil, causing a shorter
stroke.
1
2
3
4
5
6
1
2
3
4
5
Replace with the correct part which matches
the rivet size. (Refer to page 4.)
Use a spanner A to tighten securely.
Check the jaw case setting position. (Refer to
page 6.)
Clean the jaws and inside the jaw case head,
and apply “LOBSTER” brand jaw lube (or
spray-type lubricating oil or the accessory
hydraulic oil) to the backs of the jaws. (Refer
to page 6.)
Clean inside the cylinder, and apply grease
inside the cylinder and to the O-ring. (Refer to
page 7.)
Refill the hydraulic oil after remove the frame
head. (Refer to page 7.)
Use rivets which match the workpiece
thickness.
Check the air pressure. (Refer to page 4.)
Check the jaw case setting position. (Refer to
page 6.)
Replace the jaws. (Refer to page 6.)
Add hydraulic oil. (Refer to page 7.)
Symptom
Cause
Countermeasure
HYDRAULIC OIL REQUIREMENTS
Use only clean hydraulic oil, as the viscosity of the oil used will
affect tool performance.
“LOBSTER” brand Hydraulic Oil is supplied in a plastic filler
bottle with the tool, and can also be obtained from your “Lobster”
dealer or agent in your town. If this is not possible, a good quality
mineral oil with the following properties should also be used.
Viscosity ISO
: VG46
Viscosity Index
: 113
Viscosity at 40°C
: 46 c.s.t.
Viscosity at 100°C : 7.06 c.s.t.
Flash Point
: 228
RECOMMENDED OILS are:
Shell Tellus No. 46
Esso Teresso No. 46
Mobil D.T.E. 25 Oil (Medium)
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