SHOCK ABSORBER COURSE 2014 The Background and History Started In - PowerPoint PPT Presentation

SHOCK ABSORBER COURSE 2014

The Background and History • Started In South Africa In 1935 • 79 Years Foundation In The South African Market • Market Leader In Sales And Brand Awareness for the past 36 Years 1962 = 16% 1977 = 50% 2006 = 65% 2010 = 68% 2012 = 69% • Locally designed and manufactured for South African conditions • Product Range Focus - Aftermarket Sector – Primary 5 To 15 Year Old Vehicle Pool

FUNCTIONS OF A SHOCK ABSORBER PRIMARY FUNCTION  To keep the wheels in contact with the road. SECONDARY FUNCTION  To ensure more accurate control and steering of the vehicle. THIRD FUNCTION  To correct phasing.

TYPES OF SHOCK ABSORBERS

TYPES OF SHOCK ABSORBERS

THE GABRIEL PRODUCT RANGE 1. The Gas pressurised range GAS RYDER This is a full range of shock absorbers, spring seat shock absorbers, MacPherson struts and MacPherson cartridges. They provide outstanding levels of comfort and road holding because the gas pressurisation improves the shock absorber response speed to road surface changes. Average Gas Pressure is 250N

THE GABRIEL PRODUCT RANGE 2. The Hydraulic (non-gas) range Technomatic: Struts, Cartridges & Spring Seat Shocks Fleet Ryder: The Truck and Bus range

THE GABRIEL PRODUCT RANGE 3. The Low pressure gas range (Safari & Technomatic) This is a range of low pressure shocks built for passenger vehicles, ½ and 1 ton LDV’s and SUV’s Average Gas pressure is 100N

THE GABRIEL PRODUCT RANGE SAFARI HDP(Heavy Duty Performance) Gabriel Safari HDP – Product Features · Ø35, Ø41 or Ø46 Big bore Working Cylinder · High temperature oil that can operate effectively at 180ºC · Viton rod seal · Hydraulic stop lock · 360º reinforce welded mounts · Solid Machined eye rings · Durable polyurethane / rubber mounting bushes · Teflon DU bushes in rod guides · Velocity sensitive valving · 3 years unlimited kilometres warranty

THE GABRIEL PRODUCT RANGE Gabriel Gas Lift Range Gabriel manufacture a range of Industrial as well as a range of Automotive Gas Lifts. The industrial range consist of two sizes, the 4000 and 4100 Series. The 4000 series has an 8mm shaft and can be pumped to a maximum pressure of 500N. 4100 series has a 10mm shaft and can be pumped to a maximum pressure of 1000N The industrial range can be pumped by resellers while the Automotive range are vehicle specific.

TYPES OF SHOCK ABSORBERS GAS PRESSURISED VS. HYDRAULIC SHOCKS Advantages of Gas Pressurised Shocks • FASTER RESPONSE , thus giving enhanced contact between tyre and road. • Enhanced RIDE CONTROL. • GREATER RESISTANCE to fade. • QUIETER OPERATION than conventional shock absorbers. • LESS possibility of the OIL FOAMING during hard use.

WORN SHOCK ABSORBERS Why shock absorbers wear out There are between 30 and 40 precision engineered parts inside a shock. They include valves, valve seats and springs, pistons, a piston rod and a number of high precision rubbers and seals.

SHOCK COMPONENTS

SIGNS OF WORN SHOCKS

SIGNS AND PROBLEMS 1. Excessive and uneven tyre wear 2. Poor suspension control 3. Uneven braking 4. Poor ride control Shocks and Struts: • Are the tyres wearing unevenly? • Does the vehicle continue to rock more than twice front to back? • Does the vehicle lean to a point where control might be negatively affected? • Does the vehicle bounce more than twice after going over a bump in the road? • Is the vehicle ride harsh or bumpy? • Does the vehicle not have great stopping ability?

SALES POINTERS

SALES POINTERS Strut Cushion / Bump Rubber

SALES POINTERS Complaints, Claims and their causes. Faults – the most common complaints are: 1. Loss of fluid (leaking) This is caused by a damaged piston shaft, thereby damaging the seal. 2. ‘Knocking through’ or ‘bumping’ This is sometimes attributed to the shock absorber being soft, but it could be weak springs or suspension. 3. Broken or worn mountings or bushes. This is caused by age. It causes noise and limits or eliminates effectiveness.

SALES POINTERS 4. Shock absorber body damage, e.g. dents Stones striking the shock absorber usually cause this. Another cause is the vehicle striking a sand bank, ditch, or pavement etc. 5. Bent shaft The vehicle striking something could cause the piston to jam and unscrew. 6. Loose dust cover. This is often caused by stones striking the shock absorber, but can also be caused by the vehicle striking something. The weld pulls loose on the dust cover, resulting in rattling. 7. Swish. Sometimes there will be a swishing sound when a shock absorber is worked. This is caused by oil moving from a high to a low-pressure area through the valve.

SALES POINTERS The Benefits. a) Good shocks cut costs because worn ones cause tyre wear, damage the suspension etc. b) Good shocks enhance safety. Cars with worn shocks sway dangerously. c) Good shocks enhance comfort by providing a smoother ride. d) Good shocks improve performance. Worn shocks affect brake control, etc.

FAULT ANALYSIS 3. Oil Leakage Usually, leakage is from the rod seal or from the spin seal. More rarely an end cap seam weld will leak, and occasionally stone damage will cause leakage from the inter cylinder.

All Gabriel GasRyders, Technomatic, Safari and Safari HDP shocks carry a 3 year unlimited mileage warranty. Gabriel Fleetryders and Gas Lifts carry a 1 year warranty.

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