Helac L10-5.5 Service & Repair Manual

Helac L10-5.5 Service & Repair Manual

L10 series helical hydraulic rotary actuators

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Helical Hydraulic
Rotary Actuators
L10 Series Service & Repair Manual

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Table of Contents
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Summarization of Contents

Product Introduction
Actuator Applications Overview
Details on the wide range of applications and functions of Helac actuators in various industries.
General Safety Guidelines
Safety Precautions and Warnings
Essential safety guidelines and warnings for handling and operating the actuator.
Product Identification
Serial Number Location and Use
How to find and use the actuator's serial number for service and support.
Theory of Operation
Actuator Mechanism Explained
Detailed explanation of the helical spline technology and internal components.
Tools Required
Essential Tools and Seal Tool
List of necessary tools for actuator service and how to make a custom seal tool.
Assembly Documentation
Assembly Drawing
Diagram illustrating the assembled actuator with numbered parts.
Exploded View of Components
Visual representation of actuator parts separated for repair reference.
Parts List
Component Part Numbers and Descriptions
List of all parts, hardware, seals, and optional accessories with their descriptions.
Protective Sleeve Usage
Protective Sleeve Preparation
Instructions on how to cut and use the protective sleeve during service.
Disassembly
Before Disassembly
Safety warnings and initial inspection before actuator disassembly.
Disassembly Steps
Procedural instructions for taking the actuator apart, continuing across multiple pages.
Inspection
Part Cleaning and Inspection
Guidelines for cleaning actuator parts and inspecting critical surfaces.
Seal and Bearing Installation
Pre-Assembly and Dry Run
Notes on timing, assembly preparation, and recommended dry run procedure.
Installation Steps
Step-by-step guide for installing seals and bearings, continuing across multiple pages.
Assembly
Assembly Steps
Procedural instructions for assembling the actuator, continuing across multiple pages.
Grease Thrust Washers
Greasing Procedure
Instructions for packing thrust washers and exclusion seals with grease.
Actuator Testing
Breakaway Pressure and Leak Tests
Procedures for testing actuator performance, pressure, and internal leakage.
Installation and Bleeding
Bleeding Options and Vertical Mounting
Overview of bleeding configurations and procedure for vertically mounted actuators.
Bleeding Procedures
Detailed steps for bleeding single and dual bleed screw actuators, continuing across multiple pages.
Troubleshooting Guide
Common Problems and Solutions
Table of issues, causes, and recommended solutions for actuator malfunctions.
Warranty and Returns
Standard Warranty Terms
Details the standard warranty terms and conditions for Helac products.
Return Policies for Actuators and Parts
Procedures for returning actuators and service parts for credit or warranty.

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