Guides & Diagrams

A Guide to Towing a Trailer or Caravan

Are you considering towing a caravan or a trailer? You might be going on holiday, needing to move household items, possibly transport a boat, or you could need to tow as part of your business

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Trailer Wiring Diagram

External lighting wiring as used on most UK and European trailers & caravans.

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12N 7pin Trailer & Caravan Lighting Wiring Diagram

This is the standard UK wiring of a the normal socket and plug otherwise known as 12N.

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Caravan 12S 7pin socket & plug wiring

This is the standard UK wiring of a the supplementary socket and plug otherwise known as 12S.

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Caravan & Trailer 13 pin Wiring Chart

Caravan Wiring Chart showing all the connections in the 13 pin euro plug, cable colours and cable sizes for interior & exterior.

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How to calculate the PCD – Pitch circle diameter

The Pitch Circle Diameter (PCD) is the diameter of the circle which passes through the centre of all the studs, wheel bolts or wheel rim holes.

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How to find the Offset of a wheel rim

The wheel rim ‘offset’ is the distance between the centre line of the rim and the faceplate that bolts onto the hub.

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Autoreverse Brake Exploded Diagrams

Brake parts diagram showing all the separate parts that make up the Al-ko & Knott Trailer & Caravan brakes

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How to Replace BPW Brake Shoes

A guide to how top remove and replace the Type 7 BPW brake shoes, including how to adjust the brakes once the new shoes have been fitted.

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Lockheed Brake Exploded Diagrams

Brake exploded diagrams for information only as all these parts are obsolete as no parts are manufactured now.

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Bowden Cable Identification

These are the flexible cables that are connected to a compensator in the centre of the trailer or caravan and to the brake expanders on the brake backplates.

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Alko Bowden Cable Size Calculator

This calculator helps to select the correct Al-ko cable length for the axle width.

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How to check if your coupling damper needs replacing

A guide to show how to check if your caravan or trailer coupling damper needs replacing.

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Coupling Parts Identification

Some easy ways to identify the make and model of a trailer or caravan coupling.

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Trailer & Caravan Brake Adjustment

How to adjust the brakes on your caravan or trailer.

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Legal Requirements for trailers

A summary of the Legal requirements regarding trailers used on the road are given in the Road Vehicles (Construction and Use) Regulations 1986

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Driving Licence and Towing

Brief details about the Driving Licence law and towing.

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Ratchet Wheel Strap – User Instructions

User instructions for the wheel ratchet strap system.

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Ratchet Straps – User Instructions

User instructions and warnings concerning ratchet straps.

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Triplelock Fitting & User Instructions

How to fit a Triplelock head to your caravan or trailer as well as the end user information.

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How to replace an Avonride coupling lock

Fitting instructions for replacing the lock on an Avonride coupling head.

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Second Hand Trailer Price Guide

A calculator designed to give you an idea about the value of a second hand trailer.

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Trailer Cover Price Calculator & Order

We can supply trailer covers made to order to you, just enter the trailer measurements.

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Daxara & Erde Trailer Information

General facts about using these trailers as well as assembly instructions.

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Breakaway Cables

Details about the use of a breakaway cables for braked caravans & trailers.

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How to Fix a Noisy Creaking Caravan Stabiliser

A stabiliser that clamps to the towball using friction pads can begin to creak and become noisy after sometime.

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How to clean Al-ko Stabiliser Friction Pads

A simple guide on how to clean the friction pads on an Al-ko AKS stabiliser

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How to replace alko stabiliser friction pads

A simple guide on how to remove and replace the friction pads on an Al-ko AKS stabiliser

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How to Replace Sealed Bearings

A guide to replacing the sealed for life one piece bearings fitted on caravans & trailers.

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How to Replace Erde Trailer Bearings

A guide to replacing the bearings on a small Erde or Daxara Trailer

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How to Remove and Replace the Erde Hub Cap

A guide to replacing to Removing & Replacing the Hub Cap on a small Erde or Daxara Trailer

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Al-ko compensator & bowden cable change

  The first Al-ko bowden cables used to have a threaded end with a curved nut, this was later replaced with a ‘mushroom’ type end. Unfortunately the newer mushroom type cables will not fit on the compensater which was designed for the threaded end type. Either a new compensator is required or a modification is […]

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