SLIDE 1
SHOCK ABSORBER COURSE 2014
SLIDE 2 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
SLIDE 3 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
SLIDE 4
TYPES OF SHOCK ABSORBERS
SLIDE 5
TYPES OF SHOCK ABSORBERS
SLIDE 6 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
SLIDE 7 THE GABRIEL PRODUCT RANGE
- 2. The Hydraulic (non-gas) range
Technomatic: Struts, Cartridges & Spring Seat Shocks Fleet Ryder: The Truck and Bus range
SLIDE 8 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
SLIDE 9
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
SLIDE 10 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
The industrial range can be pumped by resellers while the Automotive range are vehicle specific.
SLIDE 11 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.
SLIDE 12
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.
SLIDE 13
SHOCK COMPONENTS
SLIDE 14
SIGNS OF WORN SHOCKS
SLIDE 15 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?
SLIDE 16
SALES POINTERS
SLIDE 17
SLIDE 18
SLIDE 19
SALES POINTERS
Strut Cushion / Bump Rubber
SLIDE 20 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
- r suspension.
- 3. Broken or worn mountings or bushes.
This is caused by age. It causes noise and limits or eliminates effectiveness.
SLIDE 21 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.
The vehicle striking something could cause the piston to jam and unscrew.
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.
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.
SLIDE 22
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.
SLIDE 23 FAULT ANALYSIS
Usually, leakage is from the rod seal or from the spin
- seal. More rarely an end cap seam weld will leak, and
- ccasionally stone damage will cause
leakage from the inter cylinder.
SLIDE 24
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.
SLIDE 25
THANK YOU
