English
Stud Gun EP-12, EP-15
6 Faults and troubleshooting
Caution!
When unscrewing the intermediate piece (21), it
must be held tight, because of the strong com-
pression spring which is in the gun. If not, it can be
ejected and pose great danger.
No.
Cause
Trouble shooting
Deformed or dirty stud jammed in feeding
pipe (13) or gun head.
Unscrew union nut (33) and take the head
(25) off the gun. Now remove the jammed
stud.
6.1
Stud in feeding pipe (13) in wrong position
(with shank leading)
6.2
Remove feeding tube and shake out stud
Remove O-Ring (19) and dowel pin (18) and
then trigger (17). Clean and lubricate trigger
slightly with oil.
Check if compression spring (3) broken, if so
replace compression spring.
6.3 Trigger (17) get caught
Unscrew union nut (33) and take the head
(25) off the gun. Remove O-Ring (31) and
replace spreader finger (34)
6.4 Worn spreader fingers (34)
Unscrew union nut (33) and take the head
(25) off the gun. Unscrew both hexagon
head cap screws (16)
(Caution!)
, press
intermediate piece (21) against hand grip
(back-pressure of inner springs). Remove
intermediate part and circlip (15). Extract
push rod (22) together with the springs (10,
11), retaining ring (14) piston disk (6) lip seal
(7) and bushing (23). Unscrew hexagon nut
(8) and replace worn push rod. Assemble
the gun in reversed order and replace hexa-
gon nut if necessary.
6.5 Worn push rod (22)
Unscrew union nut (33) and take the head
(25) off the gun. Remove O-Ring (31) and
replace centring finger (32).
6.6 Worn centring finger (32)
Unscrew union nut (33) and take the head
(25) off the gun. Remove separating flap
(26) from dowel pin (29). The compression
spring (28) may not jump out. The separat-
ing pin (27) is riveted with the separating flap
(26). Grind off closing head and drive off
separating pin with a drift punch. Replace
and rivet separating pin. Assemble the gun
in reversed order.
6.7 Worn separating pin (27)
OKU Systems GmbH & Co. KG, 73650 Winterbach, Germany
12