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SPX FLOW TWHC Series - User Manual

SPX FLOW TWHC Series
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© SPX FLOW, Inc.
Form No. 1000623
Rev. 6 Jan. 10, 2017
High Cycle Hydraulic Torque Wrench
Original Instructions
Unit 4, Wansbeck Business Park
Rotary Parkway
Ashington
Northumberland NE63 8QW
Tel: +44 (0) 1670 850580
Fax: +44 (0) 1670 850655
info@spxboltingsystems.com
spxboltingsystems.com
Operating Manual for:
TWHC Series

Questions and Answers

  • S
    Scott ReedAug 14, 2025
    How to fix SPX FLOW TWHC if cylinder will not advance or retract?
    • T
      Tammy BuckAug 14, 2025
      If the SPX FLOW Power Tool's cylinder won't advance or retract, first check the coupling to ensure it's fully mated. If not, examine the pump unit. Also, check for cylinder seal leakage and replace the seal if necessary. Finally, a faulty coupling could be the culprit, so consider replacing it.
  • M
    Mary HughesAug 17, 2025
    What to do if pressure will not build in SPX FLOW TWHC?
    • J
      Jessica PetersonAug 17, 2025
      If the pressure isn't building in your SPX FLOW Power Tool, it could be due to a few reasons. Start by checking for cylinder seal leakage and swivel seal leakage; if either is leaking, change the seals. Also, examine the pump unit for any defects.
  • J
    juliegrayAug 20, 2025
    Why does SPX FLOW Power Tool torque wrench operate backwards?
    • P
      Paula GomezAug 20, 2025
      If the SPX FLOW Power Tool torque wrench operates backwards, the couplings may be reversed. Check the pump, hose, and torque wrench for any cross connections.
  • N
    Nicole ChenAug 25, 2025
    What to do if pressure builds, but wrench does not move on SPX FLOW TWHC?
    • N
      Natalie HoodAug 25, 2025
      If the pressure builds in your SPX FLOW Power Tool, but the wrench doesn't move, it could be due to a hose restriction. In this case, change the hose. Alternatively, the coupling may not be fully assembled; fully tighten it.
  • J
    Jesse JohnsonAug 27, 2025
    Why is SPX FLOW TWHC Power Tool torque wrench operation slow?
    • J
      Julie BarnesAug 27, 2025
      If your SPX FLOW Power Tool torque wrench operates slowly, there are a few potential causes. A hose restriction could be the issue, so try changing the hose. Also, check if the coupling is fully assembled and tighten it if necessary. Finally, the pump flow rate might be too small, so consider using a higher flow pump.
  • J
    James FisherAug 30, 2025
    Why is the retraction speed erratic or slow on SPX FLOW TWHC?
    • A
      Ann TurnerAug 30, 2025
      If the retraction speed of your SPX FLOW Power Tool is erratic or slow, it may be caused by a hose restriction, so you should change the hose. Another possible cause is that the coupling is not fully assembled; make sure to fully tighten the coupling.
  • H
    hamiltondebbieSep 3, 2025
    What causes SPX FLOW TWHC torque wrench to not ratchet?
    • B
      Beth WoodSep 3, 2025
      If the SPX FLOW Power Tool torque wrench does not ratchet, it could be due to a broken drive shoe (replace the drive shoe), a jammed drive shoe (check the drive shoe and spring), or a damaged ratchet (check/replace the ratchet).
  • M
    Marc KelleySep 6, 2025
    Why does SPX FLOW Power Tool ratchet jump while driving?
    • R
      Ronald KelleySep 6, 2025
      If the ratchet jumps while driving with your SPX FLOW Power Tool, it could be due to a worn or damaged ratchet or drive shoe, in which case you should replace both. It could also be that the wrench was incorrectly retracted, so allow time to fully retract. Another cause could be a weak or snapped drive shoe spring, so replace the springs.
  • S
    Sandra DavisSep 10, 2025
    Why is there difficulty in hose connection with SPX FLOW Power Tool?
    • J
      Jeffrey BraunSep 10, 2025
      If you're experiencing difficulty in hose connection with your SPX FLOW Power Tool, it could be due to pressure within the hose, which requires venting the hose. Alternatively, the coupling may be damaged, necessitating its replacement.

Summary

TWHC Hydraulic Torque Wrench Overview

Description

Defines the TWHC torque wrench as a ratchet-type tool powered by a hydraulic pump.

Component Diagram

Diagram showing the TWHC hydraulic torque wrench with numbered components.

Safety Symbols and Definitions

Safety Signal Words and Definitions

Explains the meaning of DANGER, WARNING, CAUTION, and IMPORTANT safety signal words.

General Safety Precautions

Provides essential safety guidelines for operating the torque wrench and associated equipment.

Pump Safety

Details safety warnings related to the hydraulic pump unit, including pressure and fluid handling.

Specific Safety Precautions

Electric Motor Safety

Outlines electrical safety measures for the pump motor, including wiring and power supply.

Hose Safety

Details safety guidelines for hydraulic hoses, including connections, inspection, and material compatibility.

Initial Setup

Power Requirements

Specifies requirements for the hydraulic pump unit, hoses, and couplings for proper operation.

Pump Unit Specifications

Details required pump features like double acting, variable pressure, and flow rate for the TWHC wrench.

Hydraulic Connections

Explains how to properly connect hydraulic hoses and fittings, emphasizing compatibility and pressure ratings.

Use of Sockets

Advises on using high-quality, impact-rated sockets and checking them for damage.

Initial Setup Continued

Torque Wrench Usage Guidelines

Provides recommendations for maximizing torque wrench life and performance, including usage percentages and temperature effects.

Connecting the System

Describes how to connect the hydraulic wrench head and power pack using a twin-line hose assembly.

Hydraulic Connections Best Practices

Reinforces safety and proper procedure for connecting and disconnecting hydraulic hoses and fittings.

Socket Usage and Inspection

Emphasizes using correct, rated sockets and inspecting them for damage to prevent injury or equipment failure.

Initial Setup Continued

Socket and Accessory Considerations

Discourages long-reach sockets and accessories due to instability, recommending support if used.

General Safety for Hydraulic Torque Wrench Use

Highlights critical safety points like training, pressure limits, keeping clear of moving parts, and proper equipment checks.

Purpose of Use

Specifies that the TWHC torque wrench is designed solely for torque tightening of engineering nuts.

Initial Setup Continued

Equipment Abuse and Storage

Warns against striking or misusing equipment, which invalidates warranty, and advises disconnecting power when not in use.

Preparing the Torque Wrench for Use

Provides instructions on obtaining calibration certificates and performing visual inspections before use.

Changing the Drive Direction

Details the procedure for changing the direction of the square drive on the torque wrench.

Setting Torque

Outlines the steps to set the desired torque using the pump pressure gauge and remote control.

Initial Setup Continued

Torque Setting Procedure

Describes checking pressure, adjusting as needed, verifying setting, and the role of lubricants in torque values.

Socket and Reaction Arm Verification

Ensures correct socket fit and secure bracing of the reaction arm against a stationary object.

Hose Connection and Pressure Release

Covers checking hose connections and the function of the pressure-release valve in the manifold.

Wrench Retraction and Ratchet Engagement

Warns about retracting the wrench properly to ensure correct ratchet engagement and prevent damage.

Operating Instructions

Positioning the Hydraulic Torque Wrench on the Nut

Instructs on correctly positioning the torque wrench, ensuring the reaction pad is firmly braced.

Using the Reaction Arm

Explains the 360° adjustable reaction arm and recommends positioning it parallel to the socket.

Operating Instructions Continued

Reaction Point Safety

Provides guidelines for selecting rigid reaction points and avoiding tapered surfaces for safe operation.

Use of Backing Wrenches

Describes the use of backing wrenches, their secure fastening, and operator safety around moving parts.

Torque Wrench Selection Criteria

Advises selecting wrench capacity based on break-out torque, not just tightening torque.

Break-out Torque Considerations

Details torque multipliers needed for loosening, considering lubrication, corrosion, and heat effects.

Operating Instructions Continued

Tightening Bolts Procedure

Outlines the step-by-step process for tightening bolts, including sequence, pressure, and multiple strokes.

Tightening a Flanged Joint

Details the procedure for torquing flanged joints, emphasizing PPE, sequence, and final verification.

Loosening Bolts

Provides guidance on loosening bolts, torque requirements for different conditions, and cleaning/lubrication steps.

Operating Instructions Continued

Loosening Stubborn Nuts

Advises on using higher capacity wrenches for stubborn nuts and warns against striking the tool or nut.

Performance Specifications

Technical Specifications

Lists key technical data for TWHC torque wrenches, including pressure, temperature, and oil type.

Torque Output and Weight

Presents a table of torque output ranges (ft-lb) and approximate weights (kg) for different TWHC models.

Pressure;Torque Conversion Chart

General Maintenance

TWHC Hydraulic Torque Wrench Maintenance

Details routine cleaning, inspection of couplings, swivel manifold, guard, and square drive lubrication.

Hose Maintenance

Covers cleaning and inspecting hydraulic hoses and quick-connect couplings, and applying water repellent spray.

Maintenance, Service, and Warranty

Recommends professional servicing, outlines warranty terms, and lists excluded components.

End of Life and Disposal

Instructs on returning the product for safe and environmentally friendly disposal.

General Maintenance Continued

Troubleshooting Guide

Lists common faults, their possible causes, and recommended remedies for the hydraulic torque wrench system.

Repair Procedures

Recommended Servicing and Workshop Environment

Suggests annual servicing by manufacturer and performing repairs in a clean workshop environment.

Servicing Areas

Identifies three main areas for servicing: drive components, multiswivel manifold, and hydraulic cylinder.

Drive Component Disassembly

Provides step-by-step instructions for disassembling the drive components, including removing the guard and body plugs.

Repair Procedures Continued

Drive Component Disassembly Steps

Continues drive component disassembly by removing the square drive, crank pin, and the drive assembly.

Repair Procedures Continued

Drive Component Disassembly and Inspection

Covers removing the ratchet, drive shoe, springs, cleaning, and inspecting components for wear or damage.

Drive Component Assembly

Details the assembly process for drive components, including lubrication points and ensuring correct engagement.

Repair Procedures Continued

Multiswivel Manifold Disassembly

Outlines the procedure for removing the multiswivel manifold, including unscrewing the swivel yoke and disengaging keyways.

Repair Procedures Continued

Multiswivel Manifold Disassembly Steps

Continues manifold disassembly by removing the banjo circlip, banjo, and the swivel post.

Repair Procedures Continued

Multiswivel Manifold Assembly

Details the assembly of the multiswivel manifold, including installing o-rings, torqueing screws, and correctly identifying yokes.

Repair Procedures Continued

Hydraulic Cylinder Disassembly

Explains how to remove the endcap, drive assembly, and piston assembly for seal replacement.

Repair Procedures Continued

Hydraulic Cylinder;Body Assembly

Details the process of assembling the hydraulic cylinder/body, including installing new seals and testing operation.

Parts Lists

TWHC 1;3 Torque Wrench Parts Diagram

Illustrates the exploded view of parts for TWHC 1 and 1/3 models with item numbers.

TWHC 1;3 Torque Wrench Parts List

Lists the part numbers, quantities, and descriptions for TWHC 1 and 1/3 models.

Parts Lists Continued

TWHC1;3 Torque Wrench Parts List (Continued)

Continues the parts list for TWHC1 and TWHC3 models, covering items 1 to 8.

Parts Lists Continued

TWHC1;3 Torque Wrench Parts List (Continued)

Continues the parts list for TWHC1 and TWHC3 models, covering items 9 to 22.

Parts Lists Continued

TWHC 6 Torque Wrench Parts Diagram

Illustrates the exploded view of parts for the TWHC 6 model with item numbers.

TWHC6 Torque Wrench Parts List

Lists the part numbers, quantities, and descriptions for the TWHC 6 model.

Parts Lists Continued

TWHC6 Torque Wrench Parts List (Continued)

Continues the parts list for the TWHC 6 model, covering items 1 to 6.

Parts Lists Continued

TWHC6 Torque Wrench Parts List (Continued)

Continues the parts list for the TWHC 6 model, covering items 7 to 22.

Parts Lists Continued

TWHC 50 Torque Wrench Parts Diagram

Illustrates the exploded view of parts for the TWHC 50 model with item numbers.

TWHC50 Torque Wrench Parts List

Lists the part numbers, quantities, and descriptions for the TWHC 50 model.

Parts Lists Continued

TWHC50 Torque Wrench Parts List (Continued)

Continues the parts list for the TWHC 50 model, covering items 1 to 6.

Parts Lists Continued

TWHC50 Torque Wrench Parts List (Continued)

Continues the parts list for the TWHC 50 model, covering items 7 to 24.

EC Declaration of Conformity

Conformity Statement

Declares that the TWHC series torque wrench conforms to specified European Directives and standards.

SPX FLOW TWHC Series Specifications

General IconGeneral
BrandSPX FLOW
ModelTWHC Series
CategoryPower Tool
LanguageEnglish

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