Mountz FLEX-30P Nstruction Manual & Maintenance
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Mountz FLEX-30P Nstruction Manual & Maintenance

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PULSE TOOLS 
INSTRUCTION MANUAL & MAINTENANCE
 
R
Rev 5.0 (06/22/2015)
 READ ALL THE INSTRUCTIONS COMPLETELY BEFORE OPERATION.
 COMPLY WITH ALL THE INSTRUCTIONS AND RULES IN THIS MANUAL AND SAVE THIS MANUAL FOR
FUTURE REFERENCE.
1

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  • Page 1 PULSE TOOLS  INSTRUCTION MANUAL & MAINTENANCE   Rev 5.0 (06/22/2015)  READ ALL THE INSTRUCTIONS COMPLETELY BEFORE OPERATION.  COMPLY WITH ALL THE INSTRUCTIONS AND RULES IN THIS MANUAL AND SAVE THIS MANUAL FOR FUTURE REFERENCE.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS General Safety Rules and Replacement and Maintenance ………………………………………………….. Page Steps for Torque Adjustment – Pistol Type …………………………………………………………………….. Page Disassembly/ Assembly for Pulse Tools – Pistol Type, Non-Shut off ……………………......Page Impulse Mechanism Disassembly …………………………………………………………………….. Page  Pulse Unit Assembly ……………………………………………………………………………………. Page ...
  • Page 3 Steps for Torque Adjustment –Angle Series …………………………………………………………………… Page Disassembly/ Assembly for Angle Series–Non-Shut off ……………………………………………………… Page Impulse Mechanism Disassembly …………………………………………………………………….. Page  Pulse Unit Assembly ……………………………………………………………………………………. Page  Housing and Motor Set Disassembly …………………………………………………………………. Page  Housing and Motor Set Assembly …………………………………………………………………….. Page ...

  • Page 4: General Safety Rules

    (3) The warranty does not apply to accessories or damage caused where repairs have been made or attempted by others。 (4) Mountz will repair, without charge, any defects due to faulty material under the warranty period。 (5) The warranty does not cover part failures due to normal wear and tool abuse, and damage caused due to any appropriate appliances, i.e.

  • Page 5: Steps For Torque Adjustment - Pistol Type

    Steps for Torque Adjustment – pistol type 1. Loosen the screw on the pulse unit housing. Fig. 1 2. Rotate the anvil manually; adjust the valve screw inside the pulse unit to the hole; where the screw taken off. Then, use the attached tool to adjust the torque. Torque increased by turning clockwise and vise versa. Reduce torque Increase torque Fig.
  • Page 6 DISASSEMBLEY/ASSEMBLEY FOR PULSE TOOLS FLEX-30P, FLEX-40P, FLEX-50P, FLEX-60P, FLEX-65P ,FLEX-70P, FLEX-80P, FLEX-90P, FLEX-100P, FLEX-130P, FLEX-150P, FLEX-180P, FLEX-30PX, FLEX-40PX, FLEX-50PX, FLEX-60PX, FLEX-65PX, FLEX-70PX, FLEX-70X, FLEX-80H  PULSE MECHANISM DISASSEMBLY (1) Anvil Unit Disassembly: (for Model No. FLEX-30PX, FLEX-40PX, FLEX-50PX, FLEX-60PX, FLEX-65PX, FLEX-70PX) Press down the hold spacer, and find the anvil collar.
  • Page 7 Fix the pulse unit by a vise. Use the appliance (see Table 1) to loosen the lock nut on the pulse unit, Fig. 7. Applianc Fig. 7 Note: Lock-tite was applied on the luck nut when tools were assembled. Appliance No. Apply to FLEX-30P, FLEX-30PX, FLEX-40P, FLEX-40PX, 63-40RT001 FLEX-50P, FLEX-50PX, FLEX-60P, FLEX-60PX FLEX-65P, FLEX-65PX, FLEX-70P, FLEX-70PX, 63-70RT001 FLEX-70X, FLEX-80P, FLEX-80H...
  • Page 8 (4) Parts of Pulse Cylinder Unit: a. FLEX-30P Lock Nut Washer Block Cap Pulse Cylinder Spring Pressure Valve Drive Blade O-Ring Roller Rear Plate Spring O-Ring O-Ring Spring Pin Valve Greasing Screw X-Ring Valve Screw O-Ring O-Ring Back Up Ring...
  • Page 9 d. FLEX-100P Lock Nut Rear Plate Roller Block Cap Drive Blade Pulse Cylinder O-Ring Spring Valve Washer Valve Screw O-Ring O-Ring Front Plate Spring O-Ring O-Ring Pulse Cylinder Seat Pressure Valve Anvil X-Ring Back Up Ring O-Ring Greasing Screw e. FLEX-130P Lock Nut Rear Plate Block Cap...
  • Page 10 g. FLEX-30PX Lock Nut Rear Plate Block Cap Pulse Cylinder Spring Pressure Valve Drive Blade Washer O-Ring Roller Spring O-Ring O-Ring X-Ring Valve Greasing Screw Valve Screw O-Ring O-Ring Anvil Back Up Ring Steel Ball Front Plate Spring Pin Front Cover O-Ring Pulse Cylinder Seat h.
  • Page 11 Small Hole O-ring Valve Screw Big Hole Step 2 Fig. 11 Step 1 Fig. 10  Put the spring into the hole then install the pressure valve that with the o-ring sleeved. (Step 4; Fig. 12) Spring Pressure Valve Step 4 Fig.
  • Page 12 Drive Blade Front Plate Roller Fig. 14 Press Fig. 16 Spring Press Fig. 15...
  • Page 13 (3) Front Cover and Rear Plate of Pulse Cylinder Assembly  FLEX-30P, FLEX-30PX  (a) Put the O-ring on the Rear Plate and install the rear plate to the pulse cylinder, Be sure the positions of the pin and the hole are corresponded. (Fig. 17) (b) Put the X-ring on the anvil with the oil applied.
  • Page 14  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened. Fig. 26 O-ring Greasing Screw  FLEX-80P  (a) Put the O-ring on the Rear Plate and install the rear plate to the pulse cylinder, Be sure the positions of the pin and the hole are corresponded.
  • Page 15 O-ring Back Up Ring Front Plate Corresponding position X-ring Rear Plate O-ring (c) Fig. 34 (b) Fig. 33 (d) Fig. 35 (a) Fig. 32  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened.
  • Page 16 FLEX-150P, FLEX-180P  (a) Put the O-ring on the Rear Plate and install the rear plate to the pulse cylinder, Be sure the positions of the pin and the hole are corresponded. (Fig. 42) (b) Put the O-ring into the Valve Screw. (Fig. 43) (c) Put the X-ring and Back Up Ring , Washer , Snap Ring on the anvil with the oil applied.
  • Page 17 See Table 3 and Table 4 in reference to the proper appliance and tightness. (Note: Lock-tite needed when tightening the lock nut of the pulse cylinder) Appliance Fixed by a vise Fig. 53 Appliance No. Apply to FLEX-30P, FLEX-30PX, FLEX-40P, FLEX-40PX, FLEX-50P, FLEX-50PX, 63-40RT001 FLEX-60P, FLEX-60PX FLEX-65P, FLEX-65PX, FLEX-70P, FLEX-70PX, FLEX-70X, FLEX-80P, 63-70RT001...
  • Page 18 Model No. Tighten torque Model No. Tighten torque FLEX-30P 70 N.M FLEX-70P 100 N.M FLEX-30PX 70 N.M FLEX-70PX 100 N.M FLEX-40P 80 N.M FLEX-70X 100 N.M FLEX-40PX 80 N.M FLEX-80P 100 N.M 80 N.M FLEX-50P FLEX-80H 100 N.M 80 N.M...
  • Page 19 ( see Table 5) Finally, tighten the greasing screw back to the pulse cylinder unit, Fig. 59. Fig. 59 Model No. Amount of oil draw Model No. Amount of oil draw FLEX-30P 0.25 CC FLEX-70P 0.63 CC FLEX-30PX 0.25 CC FLEX-70PX 0.63 CC FLEX-40P 0.3 CC...
  • Page 20 (6) Torque Testing：  Put the washer on the front end of the anvil, and then put another washer on the rear plate. Washer Anvil Rear Plate Fig. 60 Washer  Tighten the clutch housing by hands. Driver series Wrench series Fig.

  • Page 21: Pulse Unit Assembly

    Air inlet pressure 0.6 Mpa Air inlet pressure 0.6 Mpa Model No. Model No. N.M (at least) N.M (at least) FLEX-70P FLEX-30P 12.5 FLEX-70PX FLEX-30PX 12.5 FLEX-70X FLEX-40P FLEX-80P FLEX-40PX FLEX-80H FLEX-50P FLEX-90P FLEX-50PX FLEX-100P FLEX-60P FLEX-130P FLEX-60PX FLEX-150P FLEX-65P...

  • Page 22: Housing And Motor Set Disassembly

    Note: Handle rubber must Fig. 66 be covered by a piece of cloth to avoid damage Lock Nut of Cylinder Appliance No. Apply to FLEX-30P, FLEX-30PX, FLEX-40P, FLEX-40PX, FLEX-50P, FLEX-50PX, 63-40RT004 FLEX-60P, FLEX-60PX FLEX-65P, FLEX-65PX, FLEX-70X 63-70XRT004 FLEX-80P, FLEX-80H 63-90RT003...
  • Page 23 Note: Handle rubber must be covered by a piece of cloth to avoid damage Appliance Fig. 67 Appliance No. Apply to FLEX-30P, FLEX-30PX, FLEX-40P, FLEX-40PX, FLEX-50P, FLEX-50PX, FLEX-60P, FLEX-60PX, 63-40RT003 FLEX-65P, FLEX-65PX, FLEX-70X, FLEX-80P, FLEX-80H FLEX-70P, FLEX-70PX, FLEX-90P, FLEX-100P 63-100RT002 63-130RT002...
  • Page 24 The rotor and the rear end plate must be press fitted. The clearance of the two parts must be in between 0.01~ 0.02 mm. It would not be easy to assemble the two parts by repair centers in general. Therefore, as there is a need of repair on the parts of the rotor, the rear end plate, and the ball bearing, we strongly suggest replacing a complete ROTOR UNIT, which is including the rotor, the rear plate, and the ball bearing.

  • Page 25: Housing And Motor Set Assembly

    Fig. 71  HOUSING AND MOTOR SET ASSEMBLY: (1) Housing and Air Inlet Assembly: Install and tighten the parts of air inlet one by one and in order. (NOTE: Apply the Lock-tite on the threads of air inlet before assembly) Fig.
  • Page 26 Fig. 73 (3) Cylinder Unit Assembly  Place the rotor blades into the rotor. Insert the spring pin A and B into the cylinder. Make sure the pins aim at the pin holes when putting the cylinder down. Spring Pin B Spring Pin A Rotor unit Fig.
  • Page 27 Assembly is completed. See the Table 9 and 10 in reference to appliance use and tighten torque. Appliance Note: Handle rubber must be covered by a piece of cloth to avoid damage Fig. 78 Appliance No. Apply to FLEX-30P, FLEX-30PX, FLEX-40P FLEX-40PX, FLEX-50P, FLEX-50PX 63-40RT004 FLEX-60P, FLEX-60PX FLEX-65P, FLEX-65PX, FLEX-70X 63-70XRT004 FLEX-80P, FLEX-80H 63-90RT003...
  • Page 28 Model No. Tighten torque Model No. Tighten torque FLEX-70P FLEX-30P FLEX-70PX FLEX-30PX FLEX-40P FLEX-70X FLEX-40PX FLEX-80P FLEX-80H FLEX-50P FLEX-90P FLEX-50PX FLEX-100P FLEX-60P FLEX-130P FLEX-60PX FLEX-150P FLEX-65P FLEX-65PX Table 10 FLEX-180P  HOUSING AND MOTOR SET DISASSEMBLY: (1) Cylinder Unit Disassembly ...
  • Page 29 Appliance No. Apply to FLEX-180P 63-180RT001 Table 11  Take a piece of cloth and lay it on a table before disassembly. Hold the housing and tap slightly with a plastic stick to push the cylinder unit out. Fig. 81 ...
  • Page 30 (2) Air Inlet Disassembly: Take the air inlet unit apart from the end of the housing. The parts of O-ring, Muffler, Exhaust deflector are separated by each other. Fig. 83 (3) Trigger Set Disassembly: Remove the pin to take apart the valve sleeve set. All the parts are disassembled as the below drawing showed. Fig.
  • Page 31  HOUSING AND MOTOR SET ASSEMBLY: (1) Housing and Air Inlet Assembly: Install and tighten the parts of air inlet one by one and in order. (NOTE: Apply the Lock-tite on the threads of air inlet before assembly) Fig. 85 (2) Housing and Trigger Set Assembly: Install the parts of the trigger set orderly (see Fig.
  • Page 32  Install the o-ring and the rear cover to the rear plate. The motor set assembly is completed. Rear Cover O-Ring Fig. 88 (4) Housing and Motor Set Assembly Place two o-rings into the housing, then the motor set. Be sure the direction is correct when putting the motor set in, i.e.
  • Page 33 M6-M8 FLEX-50PX FLEX-60PX FLEX-65PX M8-M10 Unit : mm FLEX-70PX FLEX-30P ~ FLEX-70P 3/8” power sockets FLEX-90P ~ FLEX-130P 1/2” power sockets FLEX-150P & FLEX-180P 3/4” power sockets General safety rules For multiple hazards, read and understand the safety instructions before installing, ...
  • Page 34 can generate high-velocity projectiles. Always wear impact-resistant eye protection during the operation of the power tool.  The grade of protection required should be assessed for each use.  Ensure that the work piece is securely fixed.  Entanglement hazards Entanglement hazards can result in choking, scalping and/or lacerations if loose ...
  • Page 35 change posture during extended tasks, which can help avoid discomfort and fatigue. If the operator experiences symptoms such as persistent or recurring discomfort, pain, throbbing,  aching, tingling, numbness, burning sensations or stiffness, these warning signs should not be ignored. The operator should tell the employer and consult a qualified health professional.
  • Page 36 Noise hazards Unprotected exposure to high noise levels can cause permanent, disabling, hearing  loss and other problems, such as tinnitus (ringing, buzzing, whistling or humming in the ears). Risk assessment and implementation of appropriate controls for these hazards are ...
  • Page 37 and fittings. Cold air shall be directed away from the hands.  Do not use quick-disconnect couplings at tool inlet for impact and air-hydraulic impulse  wrenches. Use hardened steel (or material with comparable shock resistance) threaded hose fittings. Whenever universal twist couplings (claw couplings) are used, lock pins shall be ...

  • Page 38: Impulse Mechanism Disassembly

    DISASSEMBLEY/ASSEMBLEY FOR PULSE TOOLS FLEXS-30P, FLEXS-40P, FLEXS-50P, FLEXS-60P, FLEXS-65P, FLEXS-70P, FLEXS-80P, FLEXS-90P, FLEXS-100P, FLEXS-130P, FLEXS-150P, FLEX-180P, FLEXS-30PX, FLEXS-40PX, FLEXS-50PX, FLEXS-60PX, FLEXS-65PX, FLEXS-70PX, FLEXS-70X, FLEXS-80H  IMPULSE MECHANISM DISASSEMBLY (1) Anvil Unit Disassembly: (for Model No. FLEXS-30PX, FLEXS-40PX, FLEXS-50PX, FLEXS-60PX, FLEXS-65PX, FLEXS-70PX) Press down the hold spacer, and find the anvil collar.
  • Page 39 (3) Pulse Unit Disassembly:  Fix the pulse unit by a vise. Use the appliance (see Table 13) to loosen the lock nut on the pulse unit, Fig. 97. Applianc Fig. 97 Note: Lock-tite was applied on the luck nut when tools were assembled. Appliance No.
  • Page 40 (4) Parts of Pulse Cylinder Unit: a. FLEXS-30P Drive Blade Roller Spring Block Valve Valve Screw Front Plate O-Ring Lock Nut Back Up Ring Washer Front Cover Rear Plate O-Ring O-Ring O-Ring Anvil Spring Pulse Cylinder Seat Steel Ball O-Ring Pressure Valve X-Ring Valve...
  • Page 41 d. FLEXS-100P Drive Blade Valve Screw Spring O-Ring Block Valve Anvil Front Plate O-Ring Pulse Cylinder Seat Lock Nut Washer X-Ring Roller O-Ring Spring fixed Pin Back Up Ring O-Ring O-Ring Spring Greasing Screw Steel Ball Pressure Valve O-Ring Valve Rear Plate Block Cap Pulse Cylinder...

  • Page 42: Pulse Unit Assembly

    Roller g. FLEXS-30PX Drive Blade Block Valve Spring Front Plate Valve Screw Anvil Lock Nut O-Ring Washer Back Up Ring O-Ring X-Ring O-Ring O-Ring Steel Ball Spring Pulse Cylinder Seat Steel Ball Pressure Valve O-Ring Valve Front Cover Rear Plate Spring Pin Block Cap O-Ring...
  • Page 43  Put the spring into the hole then install the pressure valve that with the o-ring sleeved.(Step 4 Fig. 102) Spring Pressure Valve Step 4 ; Fig. 102  Install the front plate and make sure the corresponding position with the pins. (Step 5 Fig. 103 Corresponding position Front Plate (2) Anvil Unit Assembly：...
  • Page 44 Front Cover Pressure Valve X-ring O-ring Corresponding position O-ring Back Up Ring O-ring Rear Plate (b) Fig. 108 (a) Fig. 107 (c) Fig. 109 (d) Fig. 110  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened.
  • Page 45  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened. Fig. 116 O-ring Greasing Screw  FLEXS-80P  (a) Put the O-ring on the Rear Plate and install the rear plate to the pulse cylinder, Be sure the positions of the pin and the hole are corresponded.
  • Page 46 Front Plate Back Up Ring Pressure Valve O-ring X-ring Corresponding position O-ring O-ring Rear Plate (d) Fig. 125 (c) Fig. 124 (a) Fig. 122 (b) Fig. 123  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened.
  • Page 47  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened. Fig. 131 O-ring Greasing Screw  FLEXS-150P, FLEXS-180P  (a) Put the O-ring on the Rear Plate and install the rear plate to the pulse cylinder, Be sure the positions of the pin and the hole are corresponded.
  • Page 48 Make sure the half-circle gaps aim at the corresponding positions. Half-circle gaps O-ring Pulse Cylinder Seat Greasing Screw Pulse Cylinder Seat Fig. 137 Fig. 138 O-ring  Use the appliance to push out the rear plate from the pulse cylinder seat. See Table 14 in reference to the proper appliance selection.
  • Page 49 Appliance No. Apply to FLEXS-30P, FLEXS-30PX, FLEXS-40P, FLEXS-40PX, 63-40RT001 FLEXS-50P, FLEXS-50PX, FLEXS-60P, FLEXS-60PX FLEXS-65P, FLEXS-65PX, FLEXS-70P, FLEXS-70PX, 63-70RT001 FLEXS-70X, FLEXS-80P, FLEXS-80H 63-90RT001 FLEXS-90P 63-100RT001 FLEXS-100P 63-130RT001 FLEXS-130P 63-150RT001 FLEXS-150P, FLEXS-180P Table 15 Model No. Tighten torque Model No. Tighten torque FLEXS-30P 70 N.M FLEXS-70P...
  • Page 50 Fig.145  Take the unit and dip it in an oil tank, then rotate the anvil by a wrench to release air inside, in the mean time, the unit would be full with oil completely. Fig.146  Use the screwdriver either,the slotted or the hex one to tighten the greasing screw, Fig. 147. O-ring Fig.147 Slotted...
  • Page 51 Model No. Amount of oil draw Model No. Amount of oil draw FLEXS-30P 0.2 CC FLEXS-70P 0.6 CC FLEXS-30PX 0.2 CC FLEXS-70PX 0.6 CC FLEXS-40P 0.25 CC FLEXS-70X 0.6 CC FLEXS-40PX 0.25 CC FLEXS-80 0.56 CC FLEXS-50P 0.3 CC FLEXS-80H 0.52 CC FLEXS-50PX 0.3 CC...
  • Page 52  Test the forward torque by a digital torque tester and make sure the tool pulses smoothly. Digital Torque Tester Fig. 152 Air inlet pressure 0.6 Mpa Air inlet pressure 0.6 Mpa Model No. Model No. N.M (at least) N.M (at least) FLEXS-30P 12.5 FLEXS-70P...

  • Page 53: Housing And Motor Set Disassembly

    (7) Pulse Unit Housing Assembly： Fix the housing by a vise. Turn the wrench in counter clockwise direction to tighten the pulse unit housing. Note: Handle rubber must be covered by a piece of cloth to avoid damage Fig.153 (8) Anvil Unit Assembly: (for FLEXS-30PX, FLEXS-40PX, FLEXS-50PX, FLEXS-60PX, FLEXS-65PX, FLEXS-70PX) (a) Place the steel ball, the quick change holder, the spring, and the hold spacer orderly on the anvil as shown.
  • Page 54 Appliance No. Apply to FLEXS-30P, FLEXS-30PX, FLEXS-40P, FLEXS-40PX, 63-40RT004 FLEXS-50P, FLEXS-50PX, FLEXS-60P, FLEXS-60PX FLEXS-65P, FLEXS-65PX, FLEXS-70XP, FLEXS-80P, 63-70XRT004 FLEXS-80H 63-90RT003 FLEXS-70P, FLEXS-70PX, FLEXS-90P 63-100RT003 FLEXS-100P 63-130RT003 FLEXS-130P 63-150RT003 FLEXS-150P Table 19  Fix the housing in an opposite position. Use the appliance to loosen the lock nut of rear plate on the cylinder in counter clockwise direction.
  • Page 55  Detach the seat, the valve, the spring, the steel ball and the valve seat from the motor housing. Valve Seat Steel Ball Spring Valve Seat Fig. 159  Take a piece of cloth and lay it on a table before disassembly. Hold the housing and tap slightly with a plastic stick to push the cylinder unit out.
  • Page 56 (2) Air Inlet Disassembly: Take the air inlet unit apart from the end of the housing. The parts of O-ring, Muffler, Exhaust deflector are separated by each other. Fig.162 (3) Trigger Set Disassembly: Remove the pin to take apart the valve sleeve set. All the parts are disassembled as the below drawing showed. www.mountztorque.com...

  • Page 57: Housing And Motor Set Assembly

    Fig.163  HOUSING AND MOTOR SET ASSEMBLY: (1) Housing and Air Inlet Assembly: Install and tighten the parts of air inlet one by one and in order. (NOTE: Apply the Lock-tite on the threads of air inlet before assembly) Fig.164 (2) Housing and Trigger Set Assembly: Install the parts of the trigger set orderly (see Fig.
  • Page 58 Fig. 165 (3) Cylinder Unit Assembly  Place the rotor blades into the rotor. Insert the spring pin A and B into the cylinder. Make sure the pins aim at the pin holes when putting the cylinder down. Spring Pin B Spring Pin A Rotor Unit Fig.
  • Page 59 O-rings Spring Pin Fig. 168 (5) Shut-Off Valve Unit Assembly  Place the three o-rings and the washer on the valve seat.  Place the assembled valve seat into the housing, making sure the hole on the side of valve seat aims at the hole on the side of the motor housing and the two holes should be at the same position in order to be fixed when the screw tighten in.
  • Page 60 (6) Housing and Lock Nut of Cylinder Assembly Fix the tool by a vise. Place the lock nut of the cylinder nut and tighten by the appliance in counter clockwise direction. Assembly is completed. See the Table 21 and 22 in reference to appliance use and tighten torque. Appliance Note: Handle rubber must be Fig.
  • Page 61 (7) Tighten the screw on the housing Before tightening the screw, make sure the hole of the housing should be at the same position where the hole of the seat at in order to assure the screw can tighten into the housing and the seat properly. Finally, insert the shut off stem with the spring sleeved into the center of the rotor.
  • Page 62 Appliance Note: Handle rubber must be covered by a piece of cloth to avoid damage Fig. 175  Detach the seat, the valve, the spring, the steel ball and the valve seat from the motor housing. Fig. 176  Take a piece of cloth and lay it on a table before disassembly. Hold the housing and tap slightly with a plastic stick to push the cylinder unit out.
  • Page 63 Fig. 178 The rotor and the rear end plate must be press fitted. The clearance of the two parts must be in between 0.01~ 0.02 mm. It would not be easy to assemble the two parts by repair centers in general. Therefore, as there is a need of repair on the parts of the rotor, the rear end plate, and the ball bearing, we strongly suggest replacing a complete ROTOR UNIT, which is including the rotor, the rear plate, and the ball bearing.
  • Page 64 (3) Trigger Set Disassembly: Remove the pin to take apart the valve sleeve set. All the parts are disassembled as the below drawing showed Fig. 180  HOUSING AND MOTOR SET ASSEMBLY: (1) Housing and Air Inlet Assembly: Install and tighten the parts of air inlet one by one and in order. (NOTE: Apply the Lock-tite on the threads of air inlet before assembly) Fig.
  • Page 65 (2) Housing and Trigger Set Assembly: Install the parts of the trigger set orderly (see Fig. 182 drawing for reference). Then, insert the pin to fix all the parts. And, install the hanger to complete the assembly. Fig. 182 (3) Cylinder Unit Assembly ...
  • Page 66 Fig. 185 (5) Shut-Off Valve Unit Assembly  Place the three o-rings and the washer on the valve seat.  Place the assembled valve seat into the housing, making sure the hole on the side of valve seat aims at the hole on the side of the motor housing and the two holes should be at the same position in order to be fixed when the screw tighten in.
  • Page 67 Fig. 190 Model No. Tighten torque FLEXS-180P 15 N.M Fig. 188 Fig. 189 Table 24 (7) Tighten the screw on the housing Before tightening the screw, make sure the hole of the housing should be at the same position where the hole of the seat at in order to assure the screw can tighten into the housing and the seat properly.
  • Page 68 MODEL Bolt Capacity Inserted Tools FLEXS-30PX FLEXS-40PX M6-M8 FLEXS-50PX FLEXS-60PX FLEXS-65PX M8-M10 Unit : mm FLEXS-70PX FLEXS-30P ~ FLEXS-70P 3/8” power sockets FLEXS-90P ~ FLEXS-130P 1/2” power sockets FLEXS-150P & FLEXS-180P 3/4” power sockets General safety rules For multiple hazards, read and understand the safety instructions before installing, ...
  • Page 69 Operating hazards The use of the tool can expose the operator's hands to hazards including crushing,  impacts, cuts, abrasions and heat. Wear suitable gloves to protect hands. Operators and maintenance personnel shall be physically able to handle the bulk, ...
  • Page 70 Workplace hazards Slips, trips and falls are major causes of workplace injury. Be aware of slippery  surfaces caused by the use of the tool and also of trip hazards caused by the air line or hydraulic hose. Proceed with care in unfamiliar surroundings. Hidden hazards, such as electricity or ...
  • Page 71 Vibration hazards Exposure to vibration can cause disabling damage to the nerves and blood supply of  the hands and arms. Keep the hands away from the nut runner sockets.  Wear warm clothing when working in cold conditions and keep your hands warm and ...

  • Page 72: Steps For Torque Adjustment - Straight Type

    Steps for Torque Adjustment – Straight Type 1. Loosen the screw on the pulse unit housing. Fig. 193 2. Rotate the anvil manually; adjust the valve screw inside the pulse unit to the hole; where the screw taken off. Then, use the attached tool to adjust the torque. Torque increased by turning clockwise and vise versa. Reduce torque Increase torque Fig.
  • Page 73 DISASSEMBLEY/ASSEMBLEY FOR PULSE TOOLS FLEX-30S, FLEX-40S, FLEX-50S, FLEX-60S FLEX-70S, FLEX-80S, FLEX-30SX, FLEX-40SX, FLEX-50SX, FLEX-60SX, FLEX-70SX  PULSE MECHANISM DISASSEMBLY (1) Anvil Unit Disassembly: (for Model No. FLEX-30SX, FLEX-40SX, FLEX-50SX, FLEX-60SX , FLEX-70SX) Press down the hold spacer, and find the anvil collar. Use an acicular piece to get the anvil collar out, then take the quick change holder, the hold spacer, the spring, and the steel ball apart.
  • Page 74 (3) Pulse Unit Disassembly:  Fix the pulse unit by a vise. Use the appliance (see Table 25) to loosen the lock nut on the pulse unit, Fig. 199. Appliance No. Apply to FLEX-30S, FLEX-30SX, FLEX-40S, 63-40RT001 FLEX-40SX, FLEX-50S, FLEX-50SX, FLEX-60S FLEX-60SX Applianc...
  • Page 75 b. FLEX-40S, FLEX-50S, FLEX-60S, FLEX-70S Washer Pulse Cylinder Roller Block Cap Pressure Valve Spring O-Ring Spring Lock Nut Front Plate O-Ring Rear Plate X-Ring Front Cover Greasing Screw O-Ring Anvil O-Ring Drive Blade Valve O-Ring Spring Pin Back Up Ring Valve Screw Back Up Ring O-Ring...
  • Page 76 e. FLEX-40SX, FLEX-50SX, FLEX-60SX, FLEX-70SX Washer Pulse Cylinder Block Cap Drive Blade Spring Roller Pressure Valve Lock Nut O-Ring Spring O-Ring Rear Plate Anvil Front Plate X-Ring Front Cover O-Ring Steel Ball Greasing Screw Valve O-Ring O-Ring Back Up Ring Spring Pin Valve Screw Back Up Ring...
  • Page 77  Install the front plate and make sure the corresponding position with the pins. (Step 5; Fig.205) Corresponding position Front Plate Step 5; Fig. 205 (2) Anvil Unit Assembly： Install the roller to the drive blade, then insert the springs into the anvil and press the blades from both sides. Finally put the anvil to the pulse cylinder to complete the anvil unit assembly.
  • Page 78  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened. Fig. 213 O-ring Greasing Screw  FLEX-40S, FLEX-40SX, FLEX-50S, FLEX-50SX, FLEX-60S, FLEX-60SX, FLEX-70S, FLEX-70SX ...
  • Page 79 O-ring Back Up Ring Front Plate Corresponding position X-ring Rear Plate Back Up Ring O-ring (a) Fig. 219 (b) Fig. 220 (d) Fig. 222 (c) Fig. 221  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened.
  • Page 80 Rear Plate Rear Plate Appliance Fig. 228 Fig. 229 Fig. 226 Fig. 227  Fix the pulse cylinder seat by a vise. Use an appliance and a torque wrench, and then turn clockwise to tighten the lock nut of the pulse cylinder. See Table 27 and 28 in reference to the proper appliance and tightness. (Note: Lock-tite needed when tightening the lock nut of the pulse cylinder) Appliance Fig.
  • Page 81 (5) Steps for Pulse Cylinder Oiling：  Loosen the greasing screw, and fill in the authorized oil by an injector until it is full and overflow. Fig. 232  Take the unit and dip it in an oil tank, then rotate the anvil by a wrench to release air inside, in the mean time, the unit would be full with oil completely.
  • Page 82 Model No. Amount of oil draw Model No. Amount of oil draw FLEX-60S 0.45 CC FLEX-30S 0.25 CC FLEX-60SX 0.45 CC FLEX-30SX 0.25 CC FLEX-70S 0.63 CC FLEX-40S 0.3 CC FLEX-70SX 0.63 CC FLEX-40SX 0.3 CC FLEX-80S 0.6 CC FLEX-50S 0.35 CC FLEX-50SX 0.35 CC...
  • Page 83 Air inlet pressure 0.6 Mpa Model No. N.M (at least) FLEX-30S 12.5 FLEX-30SX 11.5 FLEX-40S FLEX-40SX FLEX-50S FLEX-50SX FLEX-60S FLEX-60SX FLEX-70S FLEX-70SX FLEX-80S Table 30  If the test result is NG (see Table 30 in reference to the torque standard), MUST draw out or add a little amount of oil and do the following steps: ...
  • Page 84 Hold Spring Anvil Collar Quick Change Holder Hex- hole of Anvil Anvil Steel Ball Fig. 242 Fig. 241  HOUSING AND MOTOR SET DISASSEMBLY: (1) Cylinder Unit Disassembly:  Take a piece of cloth to cover the housing handle and fix the tool with a vise. Use the appliance (see Table to take the lock nut out of cylinder by turning clockwise.
  • Page 85  Take a piece of cloth and lay it on a table before disassembly. Hold the housing downward to detach the cylinder unit out. Fig. 245  Parts of Motor Set: Fig. 246 The rotor and the rear end plate must be press fitted. The clearance of the two parts must be in between 0.01~ 0.02 mm.
  • Page 86 (3) Trigger Set Disassembly: Remove the spring pin from the trigger to detach the interior parts. And then, remove the housing rubber and the hanger to complete the disassembly. Housing Rubber Hanger Spring Pin Fig. 249 Fig. 262 Housing Fig. 248 Trigger ...
  • Page 87 (2) Housing, Motor set unit and Lock Nut of Cylinder Assembly:  Put the housing rubber on the housing.  Install the motor set into the housing. Make sure the direction is correct, i.e. the spring pin on the side of the cylinder aims at the hole inside the housing.
  • Page 88 (3) Housing and Air Inlet Assembly: Install and tighten the parts of air inlet one by one and in order. (NOTE: Apply the Lock-tite on the threads of air inlet before assembly) Snap Ring Air Inlet Exhaust Deflector O-ring Muffler Spring Fig.
  • Page 89 MODEL Bolt Capacity Inserted Tools FLEX-30SX FLEX-40SX M6-M8 FLEX-50SX FLEX-60SX FLEX-70SX M8-M10 Unit : mm FLEX-30S ~ FLEX-70S 3/8” power sockets General safety rules For multiple hazards, read and understand the safety instructions before installing,  operating, repairing, maintaining, changing accessories on, or working near the power tool.
  • Page 90 Operators and maintenance personnel shall be physically able to handle the bulk,  weight and power of the tool. Hold the tool correctly; be ready to counteract normal or sudden movements and have  both hands available. Maintain a balanced body position and secure footing. ...
  • Page 91 Proceed with care in unfamiliar surroundings. Hidden hazards, such as electricity or  other utility lines, can exist. The power tool is not intended for use in potentially explosive atmospheres and is not  insulated against coming into contact with electric power. ...
  • Page 92 dry. If you experience numbness, tingling, pain or whitening of the skin in your fingers or  hands, stop using the power tool, tell your employer and consult a physician. Operate and maintain the power tool as recommended in the instruction handbook, to ...

  • Page 93: Impulse Mechanism Disassembly

    DISASSEMBLEY/ASSEMBLEY FOR PULSE TOOLS FLEXS-30S, FLEXS-40S, FLEXS-50S, FLEXS-60S FLEXS-70S, FLEXS-80S, FLEXS-30SX, FLEXS-40SX, FLEXS-50SX, FLEXS-60SX, FLEXS-70SX  IMPULSE MECHANISM DISASSEMBLY (1) Anvil Unit Disassembly: (for Model No. FLEXS-30SX, FLEXS-40SX, FLEXS-50SX, FLEXS-60SX, FLEX-70SX) Press down the hold spacer, and find the anvil collar. Use an acicular piece to get the anvil collar out, then take the quick change holder, the hold spacer, the spring, and the steel ball apart.
  • Page 94 (3) Pulse Unit Disassembly:  Fix the pulse unit by a vise. Use the appliance (see Table 34) to loosen the lock nut on the pulse unit, Fig. Appliance No. Apply to FLEXS-30S, FLEXS-30SX, FLEXS-40S, 63-40RT001 FLEXS-40SX, FLEXS-50S, FLEXS-50SX, Applianc FLEXS-60S FLEXS-60SX 63-70RT001...
  • Page 95 b. FLEXS-40S, FLEXS-50S, FLEXS-60S, FLEXS-70S Lock Nut O-Ring Pulse Cylinder O-Ring Steel Ball Valve Screw Spring O-Ring Back Up Ring Pressure Valve Valve O-Ring Block Valve Washer Roller Spring Rear Plate Block Cap Back Up Ring Spring O-Ring Spring Pin X-Ring O-Ring Pressure Valve...
  • Page 96 e. FLEXS-40SX, FLEXS-50SX, FLEXS-60SX, FLEXS-70SX Lock Nut Rear Plate O-Ring Pulse Cylinder Steel Ball Pressure Valve Valve Screw Spring O-Ring Washer Back Up Ring Valve O-Ring Drive Blade O-Ring Block Cap Roller Spring Spring Front Plate O-Ring Pressure Valve X-Ring Block Valve Spring Pin Anvil...
  • Page 97  Put the spring into the hole then install the pressure valve that with the o-ring sleeved. (Step 4; Fig.267) Spring Pressure Valve Step 4; Fig. 267  Install the front plate and make sure the corresponding position with the pins. (Step 5; Fig.268) Corresponding position Front Plate Step 5;...
  • Page 98 Front Cover Pressure Valve O-ring X-ring Corresponding position O-ring Back Up Ring Rear Plate O-ring (c) Fig. 274 (b) Fig. 273 (d) Fig. 275 (a) Fig. 272  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened.
  • Page 99  FLEXS-80S  ( a) Put the O-ring on the Rear Plate and install the rear plate to the pulse cylinder, Be sure the positions of the pin and the hole are corresponded. (Fig. 282) Then, plug the pressure valve with the convex facing outside in the hole on the rear plate.
  • Page 100  Use the appliance to push out the rear plate from the pulse cylinder seat. See Table 35 in reference to the proper appliance selection. (Fig. 289)  Fill up the interior pulse cylinder with the pulse oil about 90% full by an injector. Put the steel ball and the valve spring into the hole on the pulse cylinder in order.
  • Page 101 Table 36 Model No. Tighten torque Model No. Tighten torque FLEXS-30S 70 N.M FLEXS-60S 80 N.M FLEXS-30SX 70 N.M FLEXS-60SX 80 N.M FLEXS-40S 80 N.M FLEXS-70S 100 N.M FLEXS-40SX 80 N.M FLEXS-70SX 100 N.M FLEXS-50S 80 N.M FLEXS-80S 100 N.M FLEXS-50SX 80 N.M ...
  • Page 102  Use the screwdriver either,the slotted to tighten the greasing screw, Fig. 297. O-ring Slotted Greasing Screw Fig. 297  Use an air spray gun to blow off the oil on the cylinder seat, Fig. 298. Fig. 298  Loosen the greasing screw again and use an injector to draw out a little amount of oil ( see Table 38) .
  • Page 103 (6) Torque Testing：  Put the washer on the front end of the anvil, and then put another washer on the rear plate. Washer Anvil Rear Plate Fig. 300 Washer  Tighten the clutch housing by hands. Driver series Wrench series Fig.
  • Page 104 Air inlet pressure 0.6 Mpa Model No. N.M (at least) FLEXS-30S 12.5 FLEXS-30SX 11.5 FLEXS-40S FLEXS-40SX FLEXS-50S FLEXS-50SX FLEXS-60S FLEXS-60SX FLEXS-70S FLEXS-70SX FLEXS-80S Table 39  If the test result is NG (see Table 39 in reference to the torque standard), MUST draw out or add a little amount of oil and do the following steps: ...
  • Page 105 Hold Spacer Spring Anvil Collar Hex- hole of Anvil Quick Change Holder Anvil Steel Ball Fig. 304 Fig. 305  HOUSING AND MOTOR SET DISASSEMBLY: (1) Cylinder Unit Disassembly:  Fix the tool by a vise. Use the appliance (see Table 40) to take the lock nut out of cylinder by turning clockwise.
  • Page 106 Fig. 308  Parts of Motor Set: Fig. 309 The rotor and the rear end plate must be press fitted. The clearance of the two parts must be in between 0.01~ 0.02 mm. It would not be easy to assemble the two parts by repair centers in general. Therefore, as there is a need of repair on the parts of the rotor, the rear end plate, and the ball bearing, we strongly suggest replacing a complete ROTOR UNIT, which is including the rotor, the rear plate, and the ball bearing.
  • Page 107 Housing Rubber Hanger Spring Pin Fig. 312 Housing Trigger Spring Fig. 311  HOUSING AND MOTOR SET ASSEMBLY: (1) Cylinder Unit Assembly  Place the rotor blades into the rotor. Insert the spring pin A and B into the cylinder. Make sure the pins aim at the pin holes when putting the cylinder down.
  • Page 108 Apply the lubricator between parts while assembling. (2) Housing, Motor set unit and Lock Nut of Cylinder Assembly:  Sleeve the housing rubber to the housing.  Install the motor set into the housing. Make sure the direction is correct, i.e. the spring pin on the side of the cylinder aims at the hole inside the housing.
  • Page 109 Model No. Tighten torque Appliance No. Apply to FLEXS-30S 40 N.M FLEXS-30S, FLEXS-30SX, FLEXS-40S, FLEXS-40SX, FLEXS-50S, FLEXS-50SX, FLEXS-30SX 63-40RT004 40 N.M FLEXS-60S FLEXS-60SX FLEXS-40S 40 N.M 63-70SRT001 FLEXS-70S, FLEXS-70SX FLEXS-40SX 40 N.M 63-70XRT004 FLEXS-80S FLEXS-50S 40 N.M FLEXS-50SX 40 N.M FLEXS-60S 40 N.M FLEXS-60SX...
  • Page 110 (5) Put the spring on the pin, and then install into the assembled housing. Fig. 322 Spring Fig. 323 After all the assembly is complete, test to make sure the anvil rotates smoothly, then connect the air hose to test the torque. Wrench series Driver series Fig.
  • Page 111 marked on the tool. The employer/user shall contact the manufacturer to obtain replacement marking labels when necessary. Projectile hazards Be aware that failure of the work piece, of accessories or even of the inserted tool itself  can generate high-velocity projectiles. Always wear impact-resistant eye protection during the operation of the power tool.
  • Page 112 shoulders, neck, or other parts of the body. While using a power tool, the operator should adopt a comfortable posture whilst  maintaining secure footing and avoiding awkward or off-balanced postures. The operator should change posture during extended tasks, which can help avoid discomfort and fatigue. If the operator experiences symptoms such as persistent or recurring discomfort, pain, throbbing, ...
  • Page 113 Use respiratory protection in accordance with employer's instructions and as required  by occupational health and safety regulations. Noise hazards Unprotected exposure to high noise levels can cause permanent, disabling, hearing  loss and other problems, such as tinnitus (ringing, buzzing, whistling or humming in the ears).
  • Page 114 Never direct air at yourself or anyone else.  Whipping hoses can cause severe injury. Always check for damaged or loose hoses  and fittings. Cold air shall be directed away from the hands.  Do not use quick-disconnect couplings at tool inlet for impact and air-hydraulic impulse ...

  • Page 115: Impulse Mechanism Disassembly

    3. Install the angle housing kit back by tightening the lock nut in clockwise direction to the housing. Lock Nut Fig. 328 DISASSEMBLEY/ASSEMBLEY FOR ANGLE SERIES FLEX-50R, FLEX-60R, FLEX-70R, FLEX-50RX FLEX-60RX, FLEX-70RX, FLEX-70RG, FLEX-70RH, FLEX-80RH  IMPULSE MECHANISM DISASSEMBLY (1) Spring Holder disassembly: (for Model No. FLEX-50RX FLEX-60RX, FLEX-70RX) Use an acicular piece to get the spring holder out, then take the steel ball.
  • Page 116  Fix the angle unit. Use the torque wrench and the appliance to loosen the lock nut of the shaft gear counter clockwise. Then take off some parts. See the Table 43 for selecting the proper appliance. NOTE: Lock-tite might be applied when assembling the gear shaft. Appliance No.
  • Page 117 FLEX-70RG、FLEX-70RH FLEX-80RH Lock Nut Lock Nut O-ring O-ring Ball Bearing Ball Bearing Anvil Collar Anvil Collar Washer Lock Nut Lock Nut Shaft Gear Shaft Gear Shaft Shaft Ball Bearing Ball Bearing Lock Nut Lock Nut Ball Bearing Ball Bearing Ball Bearing Ball Bearing Washer Washer...
  • Page 118  Put the Appliance, see Table 46, on the anvil and tap on it slightly to detach the interior parts from the pulse unit, Fig.336. Appliance No. Apply to FLEX-50R, FLEX-50RX FLEX-60R, FLEX-60RX, 63-40RT002 FLEX-70R, FLEX-70RX, Applianc FLEX-70RG, FLEX-70RH, FLEX-80RH Table 46 Fig.

  • Page 119: Pulse Unit Assembly

     PULSE UNIT ASSEMBLY: (1) Pulse Cylinder Unit Assembly:  Install the pins on both sides of the pulse cylinder. (Fig. 337) Fig. 337 Pulse Cylinder  Sleeve the o-ring to the valve and install the valve into the big hole on the pulse cylinder. (Step 1; Fig.338) ...
  • Page 120 (2) Anvil Unit Assembly： Install the roller to the drive blade, then insert the springs into the anvil and press the blades from both sides. Finally put the anvil to the pulse cylinder to complete the anvil unit assembly. MUST follow the direction as Fig.81 showed while installing the anvil unit into the pulse cylinder; be sure to aim at the highest points by two sides of the interior pulse unit and press the two drive blades in slowly.
  • Page 121 MUST follow the direction as shown in Figure 344 while installing the anvil unit into the pulse cylinder; be sure to aim at the highest points by two sides of the interior pulse unit and press the two drive blades in slowly.
  • Page 122 the pin and the hole are corresponded. (Fig.350) (b) Put the X-ring and Back up ring on the anvil with the oil applied. (Fig.351) (c) Put the Back up ring and O-ring into the Valve Screw.(Fig. 352) (d) Install the front cover to the pulse cylinder by the corresponding positions.(Fig. 353) Front Cover Corresponding position Back Up Ring...
  • Page 123  Use the appliance to push out the rear plate from the pulse cylinder seat. See Table 46 in reference to the proper appliance selection. (Fig. 357)  Fill up the interior pulse cylinder with the pulse oil about 90% full by an injector. (Fig. 358) ...
  • Page 124  After completing the above steps, test to make sure the square drive of the anvil rotates smoothly. Fig. 362 (5) Steps for Pulse Cylinder Oiling：  Loosen the greasing screw, and fill in the authorized oil by an injector until it is full and overflow. Fig.
  • Page 125  Loosen the greasing screw again and use an injector to draw out a little amount of oil ( see Table 49) . Finally, tighten the greasing screw back to the pulse cylinder unit, Fig. 367. Fig. 367 Model No. Amount of oil draw Model No.
  • Page 126  Tighten the clutch housing by hands. RG、RH series Wrench series Driver series Fig. 369  Test the forward torque by a digital torque tester and make sure the tool pulses smoothly. Digital Torque Tester Fig. 370 Air inlet pressure 0.6 Mpa Model No.
  • Page 127  If the test result is NG (see Table 50 in reference to the torque standard), MUST draw out or add a little amount of oil and do the following steps:  Loosen the pulse unit housing by hands.  Loosen the greasing screw. ...
  • Page 128 (2) Make sure to apply the lock-tite on the lock nut of the main shaft gear. Washer Main Shaft Gear Lock Nut Ball Bearing Ball Bearing Fig. 374 Appliance No. Apply to FLEX-50R, FLEX-50RX 63-50RRT002 FLEX-60R, FLEX-60RX FLEX-70R, FLEX-70RX FLEX-70RG, FLEX-70RH Applianc 63-70RHRT002 FLEX-80RH...

  • Page 129: Housing And Motor Set Disassembly

     HOUSING AND MOTOR SET DISASSEMBLY: (1) Cylinder Unit Disassembly:  Fix the tool by a vise. Use the appliance (see Table 53) to take the lock nut out of cylinder by turning clockwise. Appliance Note: Handle rubber must be covered by a piece of Fig.
  • Page 130  Parts of Motor Set: Fig. 382 The rotor and the rear end plate must be press fitted. The clearance of the two parts must be in between 0.01~ 0.02 mm. It would not be easy to assemble the two parts by repair centers in general. Therefore, as there is a need of repair on the parts of the rotor, the rear end plate, and the ball bearing, we strongly suggest replacing a complete ROTOR UNIT, which is including the rotor, the rear plate, and the ball bearing.

  • Page 131: Housing And Motor Set Assembly

    (3) Trigger Set Disassembly: Remove the spring pin from the trigger to detach the interior parts. And then, remove the housing rubber and the hanger to complete the disassembly. Housing Rubber Hanger Spring Pin Fig. 385 Fig. 384 Housing Trigger Spring A ...
  • Page 132 (2) Housing, Motor set unit and Lock Nut of Cylinder Assembly:  Put the housing rubber on the housing.  Install the motor set into the housing. Make sure the direction is correct, i.e. the spring pin on the side of the cylinder aims at the hole inside the housing.
  • Page 133 (4) Housing and Trigger Set Assembly: Install the parts of the trigger set orderly (see Fig. 394 drawing for reference). Then, Insert the spring pins to fix all the parts. And, install the hanger to complete the assembly. Hanger Snap Ring Air Inlet O-ring Exhaust Deflector...
  • Page 134 measures and increase the risks to the operator. Do not discard the safety instructions; give them to the operator.  Do not use the power tool if it has been damaged.  Tools shall be inspected periodically to verify that the ratings and markings are legibly ...
  • Page 135 Do not use in confined spaces and beware of crushing hands between tool and  work piece, especially when unscrewing. Repetitive motions hazards When using a power tool, the operator can experience discomfort in the hands, arms,  shoulders, neck, or other parts of the body. While using a power tool, the operator should adopt a comfortable posture whilst ...
  • Page 136 Where dust or fumes are created, the priority shall be to control them at the point of  emission. All integral features or accessories for the collection, extraction or suppression of  airborne dust or fumes should be correctly used and maintained in accordance with the manufacturer's instructions.
  • Page 137 Additional safety instructions for pneumatic power tool Air under pressure can cause severe injury  Always shut off air supply, drain hose of air pressure and disconnect tool from air  supply when not in use, before changing accessories or when making repairs Never direct air at yourself or anyone else.

  • Page 138: Impulse Mechanism Disassembly

    DISASSEMBLEY/ASSEMBLEY FOR ANGLE SERIES FLEXS-50R, FLEXS-60R, FLEXS-70R, FLEXS-50RX FLEXS-60RX, FLEXS-70RX, FLEXS-70RG, FLEXS-70RH, FLEXS-80RH  IMPULSE MECHANISM DISASSEMBLY (1) Spring Holder disassembly: (for Model No. FLEXS-50RX FLEXS-60RX, FLEXS-70RX) Use an acicular piece to get the spring holder out, then take the steel ball. Spring Holder The steel ball may drop off when taking out the spring holder.
  • Page 139  Fix the angle unit. Use the torque wrench and the appliance to loosen the lock nut of the main shaft gear counterclockwise. Then take off the remaining parts. See the Table 57 for selecting the proper appliance. NOTE: Lock-tite might be applied when assembling the main gear shaft. Appliance No.
  • Page 140 (3) Pulse Unit Housing Disassembly: Fix the tool by a vise, use an adjustable wrench clockwise to loosen the pulse unit housing until the pulse unit housing detach from the motor housing. Then, take the pulse unit out, Fig. 401. Note: Handle rubber must be covered by a piece of cloth to avoid damage...

  • Page 141: Pulse Unit Assembly

     Parts of Pulse Cylinder Unit: a. FLEXS-50R, FLEXS-50RX FLEXS-60R, FLEXS-60RX, FLEXS-70R, FLEXS-70RX Lock Nut Rear Plate O-Ring Spring O-Ring Steel Ball Valve Screw O-Ring Pressure Valve Back Up Ring Roller Valve Washer O-Ring Block Valve Front Plate Spring Front Cover Block Cap Spring Pin X-Ring...
  • Page 142 Small Hole O-ring Valve Screw Big Hole Step 2; Fig. 406 Step 1; Fig. 405  Put the spring into the hole then install the pressure valve that with the o-ring sleeved.(Step 4; Fig. 407) Spring Pressure Valve Step 4; Fig. 407 ...
  • Page 143 (3) Front Cover and Rear Plate of Pulse Cylinder Assembly  FLEXS-50R, FLEXS-50RX FLEXS-60R, FLEXS-60RX, FLEXS-70R, FLEXS-70RX  ( a) Put the O-ring on the Rear Plate and install the rear plate to the pulse cylinder, Be sure the positions of pin and the hole are corresponded.
  • Page 144  After installing the front cover, put the o-ring on the greasing screw, then tighten the greasing screw but release it a little bit after completely tightened. Fig. 421 O-ring Greasing Screw (4) Pulse Cylinder Seat and Lock Nut of Pulse Cylinder Assembly ...
  • Page 145  Fix the pulse cylinder seat by a vise. Use an appliance and a torque wrench, and then turn clockwise to tighten the lock nut of the pulse cylinder. See Table 60 and 61 in reference to the proper appliance and tightness.
  • Page 146  Take the unit and dip it in an oil tank, then rotate the anvil by a wrench to release air inside, in the mean time, the unit would be full with oil completely. Fig. 431  Use the screwdriver either ,the slotted to tighten the greasing screw, Fig. 432. O-ring Fig.
  • Page 147 Model No. Amount of oil draw Model No. Amount of oil draw FLEXS-70RX FLEXS-50R 0.3 CC FLEXS-50RX 0.3 CC FLEXS-70RG FLEXS-60R 0.43 CC FLEXS-70RH FLEXS-60RX 0.4 CC FLEXS-80RH FLEXS-70R 0.6 CC Table 62 (6) Torque Testing：  Put the washer on the front end of the anvil, then put another washer on the rear plate. Washer Anvil Rear Plate...
  • Page 148  Test the forward torque by a digital torque tester and make sure the tool pulses smoothly. Digital Torque Tester Fig. 437 Air inlet pressure 0.6 Mpa Model No. N.M (at least) FLEXS-50R FLEXS-50RX FLEXS-60R FLEXS-60RX FLEXS-70R FLEXS-70RX FLEXS-70RG FLEXS-70RH FLEXS-80RH Table 63 ...
  • Page 149 (8) Angle Housing Unit Assembly:  Assemble the parts in Fig. 439 one by one orderly into the angle housing. Then, fix the angle housing unit. Use the torque wrench and the appliance clockwise to tighten the lock nut of the shaft gear. See Table 64 in reference to the proper appliance selecting.

  • Page 150: Housing And Motor Set Disassembly

    Appliance No. Apply to FLEXS-50R, FLEXS-50RX 63-50RRT002 FLEXS-60R, FLEXS-60RX FLEXS-70R, FLEXS-70RX FLEXS-70RG, FLEXS-70RH 63-70RHRT002 FLEXS-80RH Appliance Table 65 Fig. 442  Use 2mm L-type wrench clockwise to loosen the screws.  Assemble the angle housing unit to the pulse unit housing and use the torque wrench clockwise to tighten Screw Fig.
  • Page 151 Appliance No. Apply to FLEXS-50R, FLEXS-50RX 63-40RT004 FLEXS-60R, FLEXS-60RX FLEXS-70R, FLEXS-70RX FLEXS-70RG, FLEXS-70RH 63-70SRT001 FLEXS-80RH Table 66  Use a wrench to loosen the screw on the side of the motor housing and detach the parts of the regulator. Screw Regulator Fig.

  • Page 152: Housing And Motor Set Assembly

    The rotor and the rear end plate must be press fitted. The clearance of the two parts must be in between 0.01~ 0.02 mm. It would not be easy to assemble the two parts by repair centers in general. Therefore, as there is a need of repair on the parts of the rotor, the rear end plate, and the ball bearing, we strongly suggest replacing a complete ROTOR UNIT, which is including the rotor, the rear plate, and the ball bearing.
  • Page 153  Place the o-ring into the groove of the F/R valve unit. And then, place the steel ball on the F/R valve unit into any hole on the air inlet plate. F/R Valve O-ring Steel Balls Steel Ball O-ring Holes Fig.
  • Page 154  Fix the tool by a vise. Place the lock nut of the cylinder nut and tighten by the appliance in counter clockwise direction to complete the assembly. See the Table 67and 68 in reference to appliance use and tighten torque. Appliance Model No.
  • Page 155 (4) Housing and Trigger Set Assembly: Install the parts of the trigger set orderly (see Fig. 462 drawing for reference). Then, Insert the spring pins to fix all the parts. And, install the hanger to complete the assembly. Hanger Spring Pin Spring Pin Fig.
  • Page 156 MODEL Bolt Capacity Inserted Tools FLEXS-50RX M6-M8 FLEXS-60RX FLEXS-70RX Unit : mm FLEXS-50R ~ FLEXS-70R and 3/8” power sockets FLEXS-70RG FLEXS-70RH 1/2” power sockets General safety rules For multiple hazards, read and understand the safety instructions before installing,  operating, repairing, maintaining, changing accessories on, or working near the power tool.
  • Page 157 Operating hazards The use of the tool can expose the operator's hands to hazards including crushing,  impacts, cuts, abrasions and heat. Wear suitable gloves to protect hands. Operators and maintenance personnel shall be physically able to handle the bulk, ...
  • Page 158 Slips, trips and falls are major causes of workplace injury. Be aware of slippery  surfaces caused by the use of the tool and also of trip hazards caused by the air line or hydraulic hose. Proceed with care in unfamiliar surroundings. Hidden hazards, such as electricity or ...
  • Page 159 the hands and arms. Keep the hands away from the nut runner sockets.  Wear warm clothing when working in cold conditions and keep your hands warm and  dry. If you experience numbness, tingling, pain or whitening of the skin in your fingers or ...

  • Page 160: Recommendations For Service

    RECOMMENDATIONS FOR SERVICE The pulse tool requires regular maintenance to ensure the tool operates at optimal performance. The type of routine maintenance and the frequency is dependent on the application and how the tool is used. The pulse tool requires preventive maintenance like oil changes and have the parts inspected periodically.

  • Page 161: Trouble Shooting

    Regularly the hard joint pulse in average 0.5 sec, and the soft joint is average is 2 seconds, based on the above example, if the tool has not drop-off the performance, the service to change the oil fluid is after approximately 59 work days. However the application can be expose of extreme conditions (poor air supply, extended pulsing times, torque setting at the high end of tool range, high number of cycles), the maintenances intervals may need to be reduced.

  • Page 162: Www.mountztorque.com

    Phone: (251) 943-4125 Fax: (251) 943-4979 www.mountztorque.com sales@mountztorque.com Mr. Metric (a Mountz company) is the leading metric fastener specialist in North America. Well regarded as experts in metric. Mr. Metric is known for hard to find metric items at competitive prices. www.mrmetric.com...

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