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Hytorc Stealth 8 - User Manual

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Stealth hydraulic limited-clearance wrench
Technical manual

Table of Contents

Questions and Answers

  • K
    Karen MorganAug 18, 2025
    Why does the pressure in my Hytorc Stealth 8 Power Tool system not increase?
    • K
      karen40Aug 18, 2025
      The pressure in the system might not increase due to several reasons. There could be oil leakage because of a defective piston, piston seal, or O-ring, in which case you should replace the defective part. Alternatively, there might be leakage in the pressure relief valve or the two oil line connections; try tightening the leaking connection using a 9/16” open-end wrench. A worn motor coupling, indicated by the pump making sounds like pebbles in a tin can, can also cause this issue, requiring replacement of the motor coupling. Another cause might be the air shut-off valve failing due to excessive moisture or dirt in the air supply, which can be resolved by cleaning the air shut-off valve and the air lines. Lastly, the valve in the remote control might have failed and needs replacement.
  • I
    Isabella LopezAug 20, 2025
    What to do if my Hytorc Power Tool motor does not operate?
    • C
      Catherine OwensAug 20, 2025
      If the motor does not operate, the most likely reason is that there is no power supply. Check the power supply to resolve this issue.
  • M
    mwallAug 23, 2025
    What to do if my Hytorc Stealth 8 leaks externally?
    • K
      Kevin HawkinsAug 23, 2025
      External leaks can occur if blind plugs or end caps are worn, damaged, or not secured; in this case, replace the blind plugs or end caps. Also, a defective O-ring or gland seal in the piston can cause leaks, requiring replacement of the defective part.
  • T
    Thomas NelsonAug 26, 2025
    Why is my Hytorc Power Tool moving slower than usual?
    • F
      Frank NelsonAug 26, 2025
      If your tool is moving slower than usual, it could be due to a leakage in the system. To check, adjust the pump pressure to 700 bar (10,000 psi), switch off the pump unit while holding the start button. The pump pressure must decrease to 100 bar (1,450 psi). If the pump pressure decreases to 0 bar (0 psi), contact your local HYTORC representative.
  • J
    Joseph MathisAug 27, 2025
    What to do if my Hytorc Stealth 8 Power Tool piston does not retract?
    • C
      Charles DavisAug 28, 2025
      If the piston does not retract, it could be due to hose couplings on the tool and the pump unit not being secured properly. Ensure you securely tighten the female coupling to the male coupling. Another reason could be damage to the linkage between the piston and the drive arms, which would require replacing the defective part.
  • E
    Erica SchroederAug 30, 2025
    Why does my Hytorc Stealth 8 Power Tool operate backwards?
    • T
      Thomas HowardAug 30, 2025
      If the tool operates backwards, it may be because an even number of hoses has been connected. Connect an odd number of hoses. Another possible cause is interchanged male and female couplings. Use a HYTORC twin hose to correct this.
  • J
    Jerry BrownSep 1, 2025
    Why does my Hytorc Stealth 8 motor make strange noises and not provide pressure (400V pump units only)?
    • C
      Christine Sutton PhDSep 1, 2025
      If the motor makes strange noises and does not provide pressure, it may be due to an incorrect direction of rotation. Change the direction of rotation.
  • J
    james48Sep 3, 2025
    What to do if my Hytorc Stealth 8 Power Tool motor does not accelerate and stops after starting?
    • J
      Jennifer JohnstonSep 4, 2025
      If the motor does not accelerate and stops after starting, there may be a drop in voltage due to an extension cable that is too thin or too long. Check the pump unit with the mains plug directly in the wall socket, without using an extension cable.
  • A
    Ashley DoyleSep 6, 2025
    Why doesn't the pump of my Hytorc Stealth 8 Power Tool build pressure?
    • D
      drakeanthonySep 6, 2025
      If the pump does not build pressure, the air supply may be too low. When the pump operates, ensure that the air pressure is at least 4 bar.
  • G
    Gregory ReyesSep 8, 2025
    What to do if my Hytorc Stealth 8 Power Tool ratchet returns with a stroke?
    • T
      Tyler HoSep 8, 2025
      If the ratchet returns with a stroke, the square drive may be defective. Replace the defective part.

Summary

Safety

General Safety Instructions

Covers overall safety guidelines for personnel, work area, and equipment.

Personnel Safety

Mandates qualified personnel, PPE, and alertness during operation.

Work Area Safety

Equipment Safety

Guidelines for using approved, compatible, and undamaged HYTORC equipment.

Additional Safety Instructions

Details specific safety measures for pump units and hydraulic hoses.

Electric and Pneumatic Pump Unit Safety

Covers modifications, volatile atmospheres, grounding, and oil requirements.

Electric Pump Unit Voltage and Extension Cable Safety

Hydraulic Hose Safety

Reaction Arm Safety

Instructions on securing reaction arms against solid points and avoiding body parts.

Socket Safety

Guidelines for using HYTORC sockets, avoiding impact wrench sockets, and proper fit.

Socket Usage Warnings

Details warnings for using impact wrench sockets and ensuring correct fit.

Qualified Personnel Definition

Description

Intended Use

Electric Pump Unit

Pneumatic Pump Unit

Hydraulic Limited-Clearance Wrench

Describes the main tool, its connections, and operational parts.

Installation

Hydraulic Hoses

Details hydraulic hose specifications and connection types (A/B, A/R).

Hydraulic Hose Connections Explained

Illustrates correct and incorrect hydraulic hose connections using couplings.

Connecting Hydraulic Hoses

Procedure for connecting screw-type and quick-type safety couplings.

Disconnecting Hydraulic Hoses

Procedure for safely disconnecting hydraulic hoses, including depressurization.

Power Supply for Electric Pump Units

Covers power supply requirements and warnings for 230V and 400V units.

Connecting 230 V Power Supply

Connecting 400 V Power Supply

Air Supply for Pneumatic Pump Units

Details connecting air supply, FRL usage, and required pressure.

Explosion Protection for Pneumatic Units

Explains ATEX compliance and grounding procedures for explosion-proof systems.

Reaction Arms

Reaction Pad Usage

Alco Reaction Arm Usage

Interconnect Reaction Arm Usage

Holding Plate Usage

Operation

Inspections Before Use

Checklist for ensuring the tool and system are ready and safe for operation.

Electric Pump Unit Remote Control

Pneumatic Pump Unit Remote Control

Disengagement Button for Reaction Pawl

Procedure to disengage the reaction pawl for easier tool removal.

Pressure;Torque Chart Information

Setting the Torque Procedure

Step-by-step guide to set the desired torque using the pressure control valve.

Determining Direction of Rotation

Tightening Bolted Flange Connections

Detailed procedure for tightening bolted flange connections accurately.

Loosening Bolted Flange Connections

Procedure and caution for loosening bolted flange connections.

Maintenance

Preventive Maintenance Tasks

Troubleshooting

Troubleshooting Tools

Table of common tool problems, causes, and solutions.

Troubleshooting Pump Units

Addresses general pump unit issues and specific electric pump unit problems.

General Pump Unit Issues

Electric Pump Unit Issues

Pneumatic Pump Unit Issues

Technical Data

Stealth 2 Specifications

Stealth 4 Specifications

Stealth 8 Specifications

Stealth 14 Specifications

Stealth 22 Specifications

Stealth 36 Specifications

Maximum Torque Values

Parts List

Cylinder Parts List

Link Parts List

Hytorc Stealth 8 Specifications

General IconGeneral
BrandHytorc
ModelStealth 8
CategoryPower Tool
LanguageEnglish

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