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RIV912

PULL-TO-STROKE SPIN-PULL TOOL

FOR RIVET NUTS FROM #4-40 TO 1/2” aNd M3 TO M12

aNd RIVET STUdS #8-32 TO 5/16” aNd M4 TO M8

OPERaTINg INSTRUcTIONS

Summary of content (48 pages)

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RIV912 PULL-TO-STROKE SPIN-PULL TOOL FOR RIVET NUTS FROM #4-40 to 1/2” and M3 TO M12 AND RIVET STUDS #8-32 TO 5/16” AND M4 TO M8 Operating Instructions
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Instruction Manual - RIV912 2 PennEngineering • www.pemnet.
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Instruction Manual - RIV912 NOTE: THE RIV912 TOOL COMES WITHOUT NOSE ASSEMBLY KITS. NOSE ASSEMBLY KITS HAVE TO BE ORDERED SEPARATELY ACCORDING TO THE USER NEEDS. 1. Kit assembly with toothed ring nut (wrench is no longer necessary). 2. Tie rods are now replaced by commercial screws. 3. One position trigger mechanism. 4. Light weight. 5. Convenient. 6. The adjustment ring can be blocked using the nut. 7. Easily adjusted after tooling changeover. PennEngineering • www.pemnet.
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Instruction Manual - RIV912 GENERAL INFORMATION MANUFACTURER Rivit S.r.l. was born in 1973, it produces and distributes in Fasteners and Tools for Fixings (tools for rivets and rivet nuts). The Company boasts much technical experience and offers a wide range of products related to fastening systems. ASSISTANCE In case you need any assistance concerning the use and the maintenance of the tool, or in case you need to order any spare parts, you shall contact your local authorised dealer (or Rivit S.r.l.
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Instruction Manual - RIV912 RECEIVERS The manual herein has been written for both the operators and the technicians enabled to service the tool. Operators must not carry out jobs reserved to service and/or qualified technicians. Rivit S.r.l. is not liable for any damage deriving from the failed observance of this rule. PLACING OF THE MANUAL This instruction manual must be kept near the tool, inside a dedicated container and, above all, away from liquids or anything else that may compromise its legibility.
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Instruction Manual - RIV912 NOSE ASSEMBLIES AND STANDARD ACCESSORIES The nose assemblies stated hereafter refers to standard tools. Any special tool could consequently require special parts, different than those listed. REF.
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Instruction Manual - RIV912 KIT FOR SPECIAL HEAD. EXTENSION ON REQUEST: NOT INCLUDED IN THE STANDARD ACCESSORIES The nose assemblies stated hereafter refers to standard tools. Any special tool could consequently require special parts, different than those listed. 1 REF. 1 PART NUMBER 3531800 QTY 1 DESCRIPTION KIT 912 - SPECIAL EXTENDED HEAD REF. 2 3 PART NUMBER 3446600 3446900 QTY 1 1 DESCRIPTION 90 MM EXTENDED SLEEVE 90 MM INTERNAL EXTENDED SLEEVE You can reach a total head extension of 6.
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Instruction Manual - RIV912 OPTIONAL TOOLING For Blind Threaded Insert Installation. NOSE ASSEMBLY PART NUMBERS Thread Size Part No. For Complete Insert Nose Assembly Part No.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT #4-40 1 REF. 1 PART NUMBER 4326700 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT #4-40 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 5 3 2 REF. 2 3 4 5 PART NUMBER 4326300 4326400 MC-91251A078 (50/box) 4326500 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR #4-40 SCREW ADAPTER FOR #4-40 SCREW (HOLE Ø 3.0) SOCKET CAP SCREW #4-40 X 1.5” HEXAGONAL JOINT WITH SPRING FOR #4-40 SCREW PennEngineering • www.pemnet.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT #6-32 1 REF. 1 PART NUMBER 3755100 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT #6-32 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 3 2 REF. 2 3 4 5 10 PART NUMBER 3755200 3753300 IN-14328 (100/box) 3753400 QTY 1 1 1 1 PennEngineering • www.pemnet.com DESCRIPTION HEAD WITH RING NUT FOR #6-32 SCREW ADAPTER FOR #6-32 SCREW (HOLE Ø 3.6) SOCKET CAP SCREW #6-32 X 1.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT #8-32 1 REF. 1 PART NUMBER 3755500 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT #8-32 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 5 3 2 REF. 2 3 4 5 PART NUMBER 3755600 3753800 IN-03190 (100/box) 3753900 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR #8-32 SCREW ADAPTER FOR #8-32 SCREW (HOLE Ø 4.2) SOCKET CAP SCREW #8-32 X 1.5” HEXAGONAL JOINT WITH SPRING FOR #8-32 SCREW PennEngineering • www.pemnet.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT #10-32 1 REF. 1 PART NUMBER 37555900 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT #10-32 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 3 2 REF. 2 3 4 4 5 12 PART NUMBER 3755600 3471700 IN-07085 (100/box) IN-08823 (100/box) 3472000 QTY 1 1 1 1 1 PennEngineering • www.pemnet.com DESCRIPTION HEAD WITH RING NUT FOR #10-32 SCREW ADAPTER FOR #10-32 SCREW (HOLE Ø 5.0) SOCKET CAP SCREW #10-32 X 2.25” SOCKET CAP SCREW #10-24 X 2.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT 1/4-20 1 REF. 1 PART NUMBER 3756100 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT 1/4-20 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 5 3 2 REF. 2 3 4 4 5 PART NUMBER 3756200 3754600 IN-05336 (100/box) IN-08057 (100/box) 3754700 QTY 1 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR 1/4-20 SCREW ADAPTER FOR 1/4-20 SCREW (HOLE Ø 6.5) SOCKET CAP SCREW 1/4-20 X 2.25” SOCKET CAP SCREW 1/4-28 X 2.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT 5/16-18 1 REF. 1 PART NUMBER 3756300 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT 5/16-18 SOCKET HEAD CAP SCREW KIT COMPOSITION 3 4 2 REF. 2 3 4 4 5 14 PART NUMBER 3756400 3755300 IN-04153 (100/box) IN-10834 (100/box) 3755000 QTY 1 1 1 1 1 PennEngineering • www.pemnet.com DESCRIPTION HEAD WITH RING NUT FOR 5/16-18 SCREW ADAPTER FOR 5/16-18 SCREW (HOLE Ø 8.1) SOCKET CAP SCREW 5/16-18 X 2.25” SOCKET CAP SCREW 5/16-24 X 2.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT 3/8-16 1 REF. 1 PART NUMBER 3756700 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT 3/8-16 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 3 2 REF. 2 3 3 4 PART NUMBER 3756800 IN-15776 (100/box) IN-16488 (50/box) 3755700 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR 3/8-16 SCREW SOCKET CAP SCREW 3/8-16 X 2.5” SOCKET CAP SCREW 3/8-24 X 2.5” HEXAGONAL JOINT FOR 3/8-16 SCREW PennEngineering • www.pemnet.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT 1/2-13 1 REF. 1 PART NUMBER 4361600 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT 1/2-13 KIT COMPOSITION 2 REF. 2 3 4 5 6 7 16 3 PART NUMBER 4378400 4378500 4378600 3472600 4187000 3472900 4 QTY 1 1 1 1 1 1 PennEngineering • www.pemnet.com 5 6 DESCRIPTION M8X6 SOCKET CAP SCREW NUT M8 - 1/2-13 UNC DOUBLE THREAD BUSH HEAD (HOLE Ø 8.1) ADAPTER (HOLE Ø 8.1) M8X70 SOCKET HEAD CAP SCREW 8.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT M3 1 REF. 1 PART NUMBER 3441100 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT M3 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 5 3 2 REF. 2 3 4 5 PART NUMBER 3457500 3457400 IN-06219 (200/box) 3466200 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR M3 SCREW ADAPTER FOR M3 SCREW SOCKET CAP SCREW M3X40 12.9 UNI5931/DIN912 HEXAGONAL JOINT WITH SPRING FOR M3 SCREW On request, we can provide a longer screw than the standard one. REF.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT M4 1 REF. 1 PART NUMBER 3441200 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT M4 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 3 2 REF. 2 3 4 5 PART NUMBER 3470200 3466300 IN-03023 (200/box) 3470600 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR M4 SCREW ADAPTER FOR M4 SCREW SOCKET CAP SCREW M4X55 12.9 UNI5931/DIN912 HEXAGONAL JOINT WITH SPRING FOR M4 SCREW On request, we can provide a longer screw than the standard one. REF.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT M5 1 REF. 1 PART NUMBER 3441300 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT M5 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 5 3 2 REF. 2 3 4 5 PART NUMBER 3471800 3471700 IN-03038 (200/box) 3472000 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR M5 SCREW ADAPTER FOR M5 SCREW SOCKET CAP SCREW M5X55 12.9 UNI5931/DIN912 HEXAGONAL JOINT FOR M5 SCREW On request, we can provide a longer screw than the standard one. REF.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT M6 1 REF. 1 PART NUMBER 3441400 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT M6 SOCKET HEAD CAP SCREW KIT COMPOSITION 4 3 2 REF. 2 3 4 5 PART NUMBER 3472200 3472100 IN-13128 (200/box) 3472500 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR M6 SCREW ADAPTER FOR M6 SCREW SOCKET CAP SCREW M6X55 12.9 UNI5931/DIN912 HEXAGONAL JOINT FOR M6 SCREW On request, we can provide a longer screw than the standard one. REF.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT M8 1 REF. 1 PART NUMBER 3441500 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT M8 SOCKET HEAD CAP SCREW KIT COMPOSITION 3 4 5 2 REF. 2 3 4 5 PART NUMBER 3472700 3472600 IN-21070 (100/box) 3472900 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR M8 SCREW ADAPTER FOR M8 SCREW SOCKET CAP SCREW M8X60 12.9 UNI5931/DIN912 HEXAGONAL JOINT FOR M8 SCREW On request, we can provide a longer screw than the standard one. REF.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT M10 1 REF. 1 PART NUMBER 3441600 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT M10 SOCKET HEAD CAP SCREW KIT COMPOSITION 3 2 REF. 2 3 4 PART NUMBER 0329000 IN-03088 (100/box) 3441800 QTY 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR M10 SCREW SOCKET CAP SCREW M10X60 12.9 UNI5931/DIN912 HEXAGONAL JOINT FOR M10 SCREW On request, we can provide a longer screw than the standard one. REF.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED INSERT M12 1 REF. 1 PART NUMBER 3441600 QTY 1 DESCRIPTION KIT FOR BLIND THREADED INSERT M12 SOCKET HEAD CAP SCREW KIT COMPOSITION 3 4 5 2 REF. 2 3 4 5 PART NUMBER 0329000 4316200 3473100 3441800 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR M12 SCREW TOOTHED BLOCKING RING NUT SOCKET CAP SCREW M12X60 12.9 UNI5931/DIN912 HEXAGONAL JOINT FOR M12 SCREW PennEngineering • www.pemnet.
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Instruction Manual - RIV912 KIT FOR DOUBLE START THREAD INSERT Ø10 1 REF. 1 PART NUMBER 4311900 QTY 1 DESCRIPTION KIT FOR DOUBLE START THREAD INSERT Ø10 KIT COMPOSITION 3 2 REF. 2 3 4 24 PART NUMBER 0329000 4309700 3472900 QTY 1 1 1 PennEngineering • www.pemnet.
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Instruction Manual - RIV912 OPTIONAL TOOLING For Blind Threaded Stud Installation. NOSE ASSEMBLY PART NUMBERS Thread Size Part No. For Complete Stud Nose Assembly #8-32 #10-24 1/4-20 5/16-18 M4 M5 M6 M8 4361900 4362000 4362100 4362200 3442300 3442400 3442500 3442600 Nose assembly screws into here Stud Nose Assembly Kits are sold separately. A different kit is required for each thread size. The tool is available with different kinds of head assemblies. HEAD RING NUT Can be ordered separately.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED STUD #8-32 1 REF. 1 PART NUMBER 4361900 QTY 1 DESCRIPTION KIT FOR BLIND THREADED STUD #8-32 KIT COMPOSITION 2 REF. 2 3 4 26 PART NUMBER 2561200 4377000 3441800 3 QTY 1 1 1 PennEngineering • www.pemnet.com 4 DESCRIPTION HEAD WITH RING NUT FOR #8-32 STUD (HOLE Ø 4.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED STUD #10-32 1 REF. 1 PART NUMBER 4362000 QTY 1 DESCRIPTION KIT FOR BLIND THREADED STUD #10-32 KIT COMPOSITION 2 REF. 2 3 4 PART NUMBER 2561300 4376700 3441800 3 QTY 1 1 1 4 DESCRIPTION HEAD WITH RING NUT FOR #10-32 STUD (HOLE Ø 5.1) TIE ROD FOR #10-32 STUD HEXAGONAL JOINT PennEngineering • www.pemnet.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED STUD 1/4-20 1 REF. 1 PART NUMBER 4362100 QTY 1 DESCRIPTION KIT FOR BLIND THREADED STUD 1/4-20 KIT COMPOSITION 2 REF. 2 3 4 28 PART NUMBER 4376800 4376900 3441800 3 QTY 1 1 1 PennEngineering • www.pemnet.com 4 DESCRIPTION HEAD WITH RING NUT FOR 1/4-20 STUD (HOLE Ø 6.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED STUD 5/16-18 1 REF. 1 PART NUMBER 4362200 QTY 1 DESCRIPTION KIT FOR BLIND THREADED STUD 5/16-18 KIT COMPOSITION 2 REF. 2 3 4 5 PART NUMBER 2700500 4316200 4376200 3441800 3 QTY 1 1 1 1 4 5 DESCRIPTION HEAD WITH RING NUT FOR 5/16-18 STUD (HOLE Ø 8.1) TOOTHED LOCKING RING NUT TIE ROD FOR 5/16-18 STUD HEXAGONAL JOINT PennEngineering • www.pemnet.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED STUD M4 1 REF. 1 PART NUMBER 3442300 QTY 1 DESCRIPTION KIT FOR BLIND THREADED STUD M4 KIT COMPOSITION 3 4 2 REF. 2 3 4 30 PART NUMBER 2561200 3441900 3441800 QTY 1 1 1 PennEngineering • www.pemnet.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED STUD M5 1 REF. 1 PART NUMBER 3442400 QTY 1 DESCRIPTION KIT FOR BLIND THREADED STUD M5 KIT COMPOSITION 3 4 2 REF. 2 3 4 PART NUMBER 2561300 3442000 3441800 QTY 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR M5 STUD TIE ROD FOR M5 STUD HEXAGONAL JOINT FOR M5 SOCKET CAP SCREW STUD PennEngineering • www.pemnet.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED STUD M6 1 REF. 1 PART NUMBER 3442500 QTY 1 DESCRIPTION KIT FOR BLIND THREADED STUD M6 KIT COMPOSITION 3 4 2 REF. 2 3 4 32 PART NUMBER 2561400 3442100 3441800 QTY 1 1 1 PennEngineering • www.pemnet.
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Instruction Manual - RIV912 KIT FOR BLIND THREADED STUD M8 1 REF. 1 PART NUMBER 3442600 QTY 1 DESCRIPTION KIT FOR BLIND THREADED STUD M8 KIT COMPOSITION 3 4 5 2 REF. 2 3 4 5 PART NUMBER 2700500 4316200 3442200 3441800 QTY 1 1 1 1 DESCRIPTION HEAD WITH RING NUT FOR M8 STUD TOOTHED LOCKING RING NUT TIE ROD FOR M8 STUD HEXAGONAL JOINT FOR M8 SOCKET CAP SCREW STUD PennEngineering • www.pemnet.
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Instruction Manual - RIV912 SPARE PARTS 34 PennEngineering • www.pemnet.
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Instruction Manual - RIV912 REF. PART NUMBER QTY 1 3542500 1 DESCRIPTION Handle casing REF.
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Instruction Manual - RIV912 QUICK KIT COMPLETE WITH SPRING 1 QUICK KIT COMPLETE WITH SPRING WITHOUT TOOTHED RING NUT 2 TOOTHED RING NUT ASSEMBLED ON THE TOOL 3 SPECIAL TOOTHED RING NUT FOR SOCKET CAP SCREW M8 NO NEED FOR REDUCTION (PART NUMBER 3472600) (OPTIONAL) Hole Ø 8 REF. 1 2 3 4 36 PART NUMBER 4174200 4176900 4172400 4280300 QTY 1 1 1 1 PennEngineering • www.pemnet.
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Instruction Manual - RIV912 MOTOR UNIT SPARE PARTS (KIT 2) Part number 3540700. REF. PART NUMBER 1 3240500 2 3238400 3 3326800 4 3326900 5 3327000 6 3327100 7 3327200 QTY 1 3 1 1 1 5 1 DESCRIPTION PLANET Wheel holder PLANET WHEEL SPACER FRONT PLATE STATOR Fin Roller REF.
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Instruction Manual - RIV912 GENERAL WARNINGS The operator must read carefully the information given in the present manual, especially with regard to the safety precautions listed in this chapter. The operator must also observe the warnings listed below: • • • • • • • • • • • • • • • • • • • • The tool shall be used exclusively by trained personnel. The tool and the work area shall be kept clean and tidy. The tool shall be rested upright on the rubber base on a flat surface to prevent it from falling.
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Instruction Manual - RIV912 IDENTIFICATION/SERIAL NUMBER Model and serial number etched in the outer casing Adhesive label indicating the tool model, the name of the manufacturer and the EC marking HANDLING The tool can be hand carried. It is recommended to store the tool in its case after using it. The tool can be transported safely if is has been correctly put away in its case. Damages to the tool caused during transport and/or handling are not covered by WARRANTY.
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Instruction Manual - RIV912 OPERATORS The tool is designed to be used by one operator only. Tool operators must satisfy the requirements stated hereafter (or they must be informed and trained accordingly). They must be aware of the manual herein and of all information relevant to safety: • They must have some general and technical education, to a sufficient level to be able to understand the manual and to interpret the drawings and the diagrams correctly.
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Instruction Manual - RIV912 TOOL PREPARATION AND SCREW REPLACEMENT The following instructions are indicative, in order to avoid breaking the screw when setting the insert on the tool. You should use a calliper when adjusting the stroke. With the air connected, put the insert close to the nut and grip it.
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Instruction Manual - RIV912 SCREW REPLACEMENT WARNING!!! Tool setting and screw replacement must be carried out with the tool disconnected from air supply time. Between the casting and the nut, there must be a distance of 1.5 mm for motor unscrewing. NOTE: Hereunder instructions are relevant to KIT assembling and disassembling. TO UNSCREW THE KIT HOLDER QUICK RING Tool setting and screw replacement must be carried out with the tool disconnected from air supply time.
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Instruction Manual - RIV912 (1) Insert is stuck. (2) Keep the trigger pressed and rotate to help loosen. (3) If this does not work. (4) Disconnect the air hose. (5) Insert the Emergency Regulation Pin in the proper holes, manually unscrewing the tool. PennEngineering • www.pemnet.
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Instruction Manual - RIV912 MAINTENANCE Maintenance operations must be carried out with the tool stopped and disconnected from the pneumatic supply line. Warnings: • The tool maintenance instructions must be followed carefully. • To ensure safety and perfect tool efficiency, it is recommended to use exclusively ORIGINAL spare parts. CLEANING It is a good rule to completely clean and grease the tool on a periodic basis (depending on the type and frequency of use).
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Instruction Manual - RIV912 HOW TO PREPARE, SERVICE AND ASSEMBLE THE TOOL Inserted engine piston. If possible, the air must not be lubricated to keep from removing the grease from the o-rings in the motor piston. To keep the tool in good working condition, we recommend routine maintenance, disassembling and greasing the mentioned pieces with grease for gaskets. The tool work well with dry air.
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Instruction Manual - RIV912 FAULT DIAGNOSIS CAUSE SOLUTION No traction. Tool needs oil. Remove the engine cover (M), remove the bottom (1) and check that hole Ø 0.8 is open. Air leaks from the engine (M), with air on (4) and (3). Remove the engine cover (M): a substantial leak of air means that o-ring Ø 30 (4) is broken. If only a small quantity of air comes out of the small tubes (5) you have to replace the o-rings. If air leaks from the two holes (2) make sure that o-rings are not broken or worn.
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Instruction Manual - RIV912 CAUSE SOLUTION Motor screwing When the rotating pin (26 part number 4175500) is broken and you replace it, the motor may rotate continuously, which means that the shaft (12 part number 3542200) is too long; in this case it will have to be shortened by a few tenths to obtain the closure of the ball (20 part number 3096900).
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Instruction Manual - RIV912 FAULT DIAGNOSIS AND REPAIRS REPAIRS To ensure the operational efficiency and safety of the tool, all repair jobs shall be carried out exclusively by the local authorized dealer or by the Technical Assistance Service of PennEngineering. REQUESTING ASSISTANCE For any information concerning Use, Maintenance, Installation, Repair etc., PennEngineering is at the Customer’s full disposal for all enquiries.