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Hewland FTR User Manual

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PAGE 1 © Copyright Hewland Engineering Limited 2001-2009
SERVICING INSTRUCTIONS AND ILLUSTRATED
PARTS LIST FOR THE FTR FAMILY OF HEWLAND
GEARBOXES, COVERING FTR, FTRS, FTRL, JFR &
LJS UNITS.
HEWLAND ENGINEERING LTD
WALTHAM ROAD, WHITE WALTHAM,
MAIDENHEAD, BERKSHIRE,
SL6 3LR, ENGLAND
TELEPHONE: +44 (0)1628 827600
Last Updated 23rd March 2009

Table of Contents

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Hewland FTR Specifications

General IconGeneral
BrandHewland
ModelFTR
CategoryMicrophone system
LanguageEnglish

Summary

Technical Specification Overview

Gear Selection Procedure

Describes the procedure for upshifting and downshifting gears in the gearbox.

General Notes and Lubrication

Bearing Replacement and Oil Filling

Details on bearing replacement and oil filling procedures.

Backlash & Pre-load Setting Procedures

Shimstack Calculation

Steps for calculating sideplate and maincase shimstacks for correct settings.

Finalize Assembly & Check Backlash

Steps to complete assembly and verify backlash after setting.

Pinion Setting

Sequential Fork Setting

Powerflow Differential Explained

FTR-212-ADJ Backlash Adjustment

Gearbox Assembly Guide

Illustrated Parts Lists & Diagrams

6 Speed Parts Lists

Illustrated parts for 6-speed FTR, FTRS, FTRL & JFR units.

5 Speed Parts Lists

Illustrated parts for 5-speed FTR, FTRS, JFR & LJS units.

Bearing Carrier & Differential Options

Options for bearing carriers and differential assemblies.

Gearbox Tooling

Illustrations and list of specialized tools for gearbox assembly.

Installation Drawings

Diagrams for maincase, bearing carrier, and output flange installation.

Technical Bulletins & Memos

FTRL Hubbed 2nd Ratios Memo

Component requirements for FTRL hubbed 2nd ratios.

Technical Bulletin: FTC Differential Locking Percentage

Formula for calculating differential locking percentage.

Bearing Carrier & Anti-rotation Bulletins

Updates for bearing carriers and anti-rotation procedures.

Selector Barrel & Pin Bulletins

Service updates for selector barrel pin re-pinning and specification.

Shaft Retention & Pinion Thread Bulletins

Design changes for shafts and recommendations on pinion thread maintenance.

Differential Case & FTRL Gear Bulletins

Details on differential case variations and introduction of FTRL gears.

Clutchshafts & Pinionshaft Modifications Bulletins

Information on lightweight clutchshafts and pinionshaft updates.

Gear Indicator & Reverse Idler Screw Bulletins

Potentiometer position guidance and reverse idler screw modifications.

Pinion Bearing Nut Revision Bulletin

Design enhancements for the pinion bearing nut.

General K-Nut Tightening Torques

Manual Modification History

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