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PROMO: CORTECO EXPLODES THE GUIDE BUSHES ‘MYTH’

PROMOTIONAL CONTENT WRITTEN BY CORTECO

 

Clutch input shaft sleeves (guide/ bushes) and seals: essential, but are they really only available through dealerships? Corteco explodes the myth.

The first call for any replacement part is the local motor factor, but when it comes to a part such as a clutch input shaft sleeve (guide/ bush) and seal, most UK garages turn to dealerships.

Essential in clutch changes for many German, Italian and French-built cars, dealerships hold a virtual monopoly on aftermarket sales throughout the UK. But the fact is, they are not an OE supply only item.

Garages only think they are.

 

New direction

Split-open view of a guide bush

Until quite recently, for example, that’s precisely what they thought up at Almark Garage in Wirksworth, Derbyshire:

“We always sourced them through the dealers. It just seemed like the place to get them because it was associated more with the OE gearbox than the clutch,” says proprietor Mark Swift.

“Our problem was that once you’ve got the vehicle up on the ramp and the gearbox off, you couldn’t hang around all day. Sometimes service from the dealers leaves a lot to be desired, so it meant that we didn’t always replace them, even though we know they can be a source of problems with the clutch.”

Almark is fitting more, now, because the availability has improved.

“It was only when the motor factor came along about three months ago and pointed out that they now had them in stock that we switched over. They are not expensive to buy, but even so, they are half the dealership price. I have to say that the service they provide means we are now fitting more than we ever did,” he adds.

 

Guide/ bush function

When not in operation, the clutch release bearing withdraws and comes to rest on the shaft sleeve. The shaft sleeve can become pitted through wear and tear. A worn release bearing can catch on it, leading to misalignment problems that can cause the clutch to slip.

This accelerates clutch wear.

Inside the shaft sleeve is a rubber seal. This is designed to protect the clutch from ingress by gearbox oil. If the seal fails there are problems ahead. Seal failure is often related to debris generated by clutch wear.

 

Contaminants

Clutch ‘dust’ accumulates in the gearbox. If the dust accumulates on the shaft and on the sealing lip, the seal can be compromised. It can damage the seal and reduce operational life. A worn or damaged seal allows the oil to leak into the clutch housing. If this contaminates the friction plate, premature failure of the clutch is inevitable.

This leads to excessive slippage. Any excessive slip between the clutch and flywheel causes overheating. Soaring clutch temperatures increase the potential for failure.

Installation errors

After removing the clutch, the clutch input shaft sleeve (guide/bush) and seal is sometimes ignored or not considered for replacement. Three alternative views are:

  1. a) It is part of the gearbox, rather than the clutch
  2. b) It looks ok, so let’s save the customer money
  3. b) They are difficult to replace so are best left alone

Each of these constitutes an error of judgement that can expose the garage to an expensive rectification procedure and damage its reputation.

Best practice

Corteco, one of the world’s largest manufacturer’s of clutch input shaft sleeves (guide/ bush) and seals, says that although these components are highly reliable performers, they must be replaced when changing the clutch.

It adds that because so many garages have always sourced their replacement from dealerships, many motor factors are unaware of the demand.

Given that labour is the major cost of the clutch change and that the clutch input shaft sleeve (guide/bush) and seal is not an expensive part, garages would be inclined to change more of them if the parts were available. A campaign to raise awareness about aftermarket availability is under way.

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PROMO: CORTECO HAS RELOCATED

PROMO: CORTECO HAS RELOCATED

PROMOTIONAL CONTENT WRITTEN BY CORTECO

Corteco has successfully moved from Lutterworth to Rugby. The move has completed the largest expansion for the brand in the UK and emphasises the rate of annual growth for the company.

New site in Rugby is part of firm’s expansion plans

The new location places Corteco alongside its parent company Freudenberg Sealing Technologies (FST) allowing Corteco to reap knowledge and expertise from the Original Equipment Manufacturer and to pass it onto their customers. This is still proving to be a fruitful year for Corteco, with the expansion of the team, the new state of art location and additional stock enabling Corteco to serve customers instantly.

The move has brought access to a bigger warehouse, a more central location, more office space, improved facilities, a strong source of OE knowledge and a brand new ordering system. All of this helps to benefit the team and the customers greatly proving a seamless service from start to finish.

Corteco asks all customers to ensure the new address is updated to reflect the completed transition.

For any queries on this matter please call 01455 550000 or email a member of the customer service team on service@corteco.co.uk

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PROMO: CORTECO AT AUTOMECHANIKA

Promotional content on behalf of Corteco

 

The FST subsidiary Corteco showcased its product portfolio – now expanded to include steering and suspension components – from September 11 to 15 at the Automechanika trade fair in Frankfurt. Corteco has been offering ball joints, control arms, tie rods and hydraulic and conventional bushings and stabilizer links for the replacement parts market since the start of the year. “We are seeing an ongoing trend toward cars that offer greater comfort thanks to an improved ride. We wanted to address this in the replacement parts business with our expanded product portfolio,” said Jason Meier, Senior Vice President at Corteco.
The new products generated considerable interest among the trade fair visitors. Detailed information on Corteco’s complete range including belt pulleys, engine mounts and interior air filters was in demand as well. Visitors were able to personally feel the impact of high-performance steering and suspension products on a vehicle’s ride: In a vehicle simulator, they experienced how well Corteco damping parts perform compared to those of the competition – a highlight for many visitors to the stand.
Corteco made a strong visual impression at the event with its striking new motifs. “We show the people behind our products in the photos on our website as well as in advertising, brochures and catalogs,” Meier said. “They identify strongly with our products, and we are illustrating this in our images. Without the technical expertise of our employees, we would not have thrived for more than twenty years in the Independent Automotive Aftermarket.”

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Corteco

OIL SEAL FAILURE DIAGNOSIS

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Inside Line: Corteco

Nissan Skyline (R33) 2.5i 24V – Engine code RB25DE

As engine overhaul procedures become necessary, it’s worth remembering that Corteco supplies Camshaft Seals (Corteco 19026764B Nissan 13042-16V00) and Valve Stem Seals (Corteco 19020004 – Nissan 13058-13151) for the Nissan Skyline. Both seals form a vital part of the repair process.

Many installers still see such seals as ‘dealer only parts’, which explains why in certain areas, motor factors remain unaware of the demand for them. Corteco advises motor factors to take note that as the aftermarket distribution arm of OE manufacturer Freudenberg, Corteco is able to offer a complete range of gaskets, gasket sets and oil seals in original quality for engine overhauls, providing the best solution for today’s aftermarket applications.

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Inside Line: Corteco

Corteco advises that sales of its 21652556 OE quality engine mounts – which fit many models in either range – have almost doubled in the last year, a statistic that suggests many more of these models are likely to experience engine mount failure in the foreseeable future.

These components are safety-critical and subject to MOT Test criteria, so it’s worth checking them out now.

“Given their safety critical role and the diverse range of loads and forces that they are expected to cope with, it’s safer to choose the engine mounts of original equipment quality available from the Corteco range,” says sales and marketing manager Steve Jarnet.

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Inside Line: Corteco

Corteco points out that worn Torsional Vibration Dampers (TVDs) in some models are likely to generate noise and increase wear to other accessories in front end auxiliary drive systems.

Part number 80004883 is a new pulley kit that resolves the issue in this model range, but also ensures that the problem is fixed first time, without recourse to further investigation or remedial work.

That’s because Corteco OE Quality Pulley Kits have been introduced to help eliminate potential installation errors caused either by failing to fit new TVD bolts (and reusing the existing bolts) or installing incorrect ones.

All TVD bolts are not the same and Corteco TVD kits include the correct bolts, ensuring that bolt identification errors are eliminated at distributor and installer level. Many garages re-use the old bolts, but Corteco advises that new bolts are fitted every time in line with the recommendations of the Original Equipment manufacturer. By stocking the new Corteco kits, motor factors can be certain that the correct TVD bolts have been supplied to installers, every time. Installers will also benefit:

“Installers are more likely to fit new bolts when they are provided inside the boxes, with the pulleys,” says Corteco Product Manager Satbinder Rana.

TVD pulleys are increasingly fitted inside auxiliary drives in order to reduce crankshaft vibrations. As such, they are subject to wear. The introduction of the new kits is a move that encourages better workshop practice at garage level. It adds further value to the Corteco TVD product range, too.

“Unchanged, a worn TVD creates problems for the belt and other components in the drive, but it’s essential that new TVD bolts are installed when the new pulleys are fitted in order to preserve system integrity,” he adds.

Sales and Marketing Manager Steve Jarnet says:

“When supplied separately, the problems for motor factors have always been TVD bolt identification and parts storage. A single box resolves those issues and gives us the opportunity to enhance the warranty to our customers. As we’ve taken the opportunity to redesign the packaging, we’ve been able to improve part protection, reduce shelf space requirements and increase product visibility – all at the same time.”

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Inside Line: Corteco

Mercedes-Benz C-Class:

Corteco has added a fix for troublesome trailing arm bushings on older models. Cracked, split or oil soaked bushings will cause problems because their condition is critical for rear axle alignment. Evidence that replacement is required is likely to include a ‘clunking noise’

when cornering, negotiating roundabouts or passing over ‘speed bumps’.
A sign of uneven wear to tyres is further evidence that the trailing arm bush has been prematurely compromised by wear.

Corteco adds that carbon activated cabin filters are the OE fitment for these models. A standard or non-carbon activated cabin filter actually represents a downgrade for the customer, warns the company.

As the aftermarket distribution arm for Freudenberg, one of the world’s largest manufacturers of cabin filters for OE and the aftermarket, Corteco says carbon activated cabin filters add protection from smells and gases drawn in through the air in-take. It contends that customers made aware of this are more likely to specify the premium, activated carbon option, if given the choice.

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Inside Line: Corteco

Renault Espace:

Corteco points out that following a front-end drive system upgrade, the auxiliary drive systems on some models in this range have failed prematurely because the Torsional Vibration Dampers were changed without fitting new TVD bolts. Corteco recommends that TVDs and TVD Bolts should be replaced along with the drive belt, as part of a drive system upgrade.

All TVD bolts are not the same, which until now was an issue that created storage and selection issues for motor factors and workshops.

TVDs – often known as crankshaft pulleys – take out drive system vibrations that are transmitted through the crankshaft and which can adversely affect the efficiency of the drive system. The bolts have key functions. In addition to securing the pulley, they are designed to stretch. They stretch in order to absorb and deal with the stresses and strains exerted on the pulley, which also provides a decoupling facility.

At low speeds, stress and strain on the TVD increases. Decoupling the pulley from the drive system at low speed reduces the strain and extends the operational lifetime of the pulley.

Bolts that have just been removed from the old pulley are unsuitable for installation with a replacement.

The introduction of a Corteco range of OE quality TVD Kits ensures that installers have access to the correct bolts and the appropriate TVD pulley replacement for the specific model, every time. It also eliminates rectification issues later – which can be significantly complicated if engine damage ensues.

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Inside Line: Corteco

CAT Inside Line VW 2.0-litre TDI

Corteco has identified several issues with the VW 2.0-litre TDI model range. These include the sump plug in the engine block and the cam seal and crank seals in the main drive system.

The sump plugs are often re-used, but at some risk to the vehicle owner. Re-threading is an option best avoided, because it is a labour intensive and unreliable solution, says Corteco. “Sump plugs are not a universal fit and cross-threading is common. Sump plug repairs that were often carried out because parts are either too expensive to obtain from dealers – or more difficult to source in the time available – are a thing of the past, thanks to the Corteco Sump Plug Merchandiser.

The Corteco Sump Plug Merchandiser allows motor factors to supply a new plug for most vehicles at a cost that makes it more worthwhile to fit ‘new’ at every service.
Corteco also notes that the cam seals and crank seals in the drive systems on this model range are subject to wear and replacement should be considered when the timing belt is replaced.

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