SMR May - June Brochure UK_40p_May 2022 V1 (1)

AROUND THE ENGINE

SUPERIOR DESIGN, QUALITY, AND EXPERTISE WITH SACHS

LUK SELF-ADJUSTING CLUTCH (SAC)

As clutches are subjected to continuous wear and tear, LuK has invested tremendous efforts in the development of a wear adjustment solution. The SAC uses a load sensor (sensor diaphragm spring) to activate its wear adjustment function by turning a ramped ring. This wear adjusting mechanism reduces the required actuation forces while increasing clutch life by around 1.5 times. In addition, actuation forces remain nearly unchanged throughout the clutch's service life. As clutch actuation comfort requires a harmonic operating load curve in addition to low actuation forces, the SAC was designed with the capacity to be tuned to each vehicle’s specific characteristic curve. The new SAC II does not use a second diaphragm spring as a load sensor; instead, it has fingers formed from the main diaphragm spring and special tangential leaf springs with a regressive characteristic curve.

SACHS WORKSHOP TIPS TIP #1 CLUTCH SLIPPING

Clutch slipping symptoms can be as varied and wide-ranging as the causes. In this case, there are a few things to check: 1. Facings – are they worn down to rivet heads? 2. Facings – heavily contaminated with oil or grease? 3. Clutch facing – is it burnt or has it disintegrated?

The SACHS range brings you all the key clutch kit parts and components you will need in one box – including clutch pressure plate, clutch disk and clutch release bearing ■ Pilot bearings for all common vehicle models – so you can be confident we have the right part for every customer ■ SACHS DBC provides outstanding vibration damping over the entire speed range – effectively reducing noise and creating a smoother, more comfortable drive ■ Kits include special grease for assembly – guaranteeing perfect, long-term clutch functioning for mechanics who insist on the best job for their customers ■ Quick and easy ordering – the simplicity of all the right parts with just one order number.

4. Facing – does it contact the entire surface? 5. Clutch pressure plate – has it overheated? 6. Actuation system – signs of wear and tear? 7. Diaphragm spring – is it fractured?

8. Guide cams – are there any wear-induced ridges? Things you can do to resolve the problem: • Release system wear, check freedom of movement and adjust if required

In recent years Self-Adjusting Clutches have become the standard equipment in applications with high engine torque or with increased requirements for wear reserve. The essential advantages of the SAC over conventional designs are: ■ Low release loads which remain constant throughout the entire service life ■ Therefore, excellent driving comfort throughout the entire service life ■ Increased reserve for wear and consequently longer service life thanks to automatic wear adjustment ■ Release bearing over-travel is prevented by the diaphragm spring end stop.

• Check vehicle has correct parts fitted • Check the flywheel is correctly reworked

• See if any lubricant has contaminated the friction surfaces • Check if there has been a deformation and/or warping of the friction surfaces on the flywheel and pressure plate.

EVERYTHING YOU NEED FOR AN ORIGINAL-QUALITY OIL CHANGE

ZF supplies all the components you need for an oil change. Whether ZF LifeguardFluid transmission oil or our oil change kits – every single component is designed to be perfectly compatible with the relevant transmission.

Using a special tool is an absolute must to ensure correct installation of the Self-Adjusting Clutch. No counteracting forces must be applied during installation to prevent early rotation of the adjusting ring in the clutch pressure plate.