Coil Spring
Coil Spring
• Watch the video that comes with the Spring Tensioning System (VAS 6274) for removing and installing the coil spring.
Special tools, testers and auxiliary items required
• Spring tensioning system (VAS 6274)
• Pneumatic /hydraulic foot pump (VAS 6179)
Removing
- Remove the rear wheel.
The beveled surface of the thrust piece on the spreader device must face upward in the drive direction to prevent damaging the brake line.
- Insert the spreader device (VAS 6274/8) between the body and the upper transverse link as illustrated and slightly pretension it.
- Insert the locking thrust plate (VAS 6274/1) from the outside between the 2nd and 3rd spring coils as illustrated.
- Move the safety lever - 1 - on the (VAS 6274/1) in - direction of arrow -.
- Push the plunger (VAS 6274/4) through the hole in the transverse link using the T-bar (VAS 6274/5) and insert it into the (VAS 6274/1).
- Move the safety lever - 1 - in - direction of arrow - to lock the (VAS 6274/4).
- Remove the (VAS 6274/5).
- Turn the (VAS 6274/1) upward far enough so that it is still free in the spring.
- Place the (VAS 6274/2) into the spring, as illustrated, and turn it downward so that is still free in the spring.
• If it is not possible to turn the pressure plate downward, remove the anti-twist mechanism, turn the pressure plate into position and then tighten the anti-twist mechanism again.
• Coat the front area of the spindle lightly with the accompanying grease before removal and installation of each spring.
• Only grease the spindle with the accompanying grease. The spindle will be damaged if a different grease is used.
- Coat the front of the spindle (VAS 6274/3) lightly with the grease provided.
1. Tube of grease from the (VAS 6274)
2. (VAS 6274/3)
- Insert the (VAS 6274/3) into the socket (VAS 6274/6) and then push it through the hole in the transverse link while turning it.
• The spindle must move easily into the thread in the plunger. Do not use force.
• The collar on the spindle must touch the axial bearing on the (VAS 6274/2).
- Tighten the (VAS 6274/3) hand-tight using (VAS 6274/6).
• 41/4 to 43/4 spring coils must be between both pressure plates in order to be able to compress the different spring to the smallest dimension possible.
• Move the anti-twist mechanism upward 180° if necessary and then turn (VAS 6274/1) 180° again (41/4 to 43/4 spring coils).
• The anti-twist mechanism must remain turned toward the cover plate in the drive direction, as illustrated.
- Turn both the (VAS 6274/1) and (VAS 6274/2) toward each other so that both anti-twist mechanisms can be attached to each other.
- Tighten the collar bolts - arrows - hand-tight.
Apply tension or reduce the tension on the spring coils only when both anti-twist mechanisms are attached to each other with the collar bolts - arrows -.
- Turn the (VAS 6274/6) to apply tension to the coil spring. Counterhold the spring compressor device using counterhold tool (VAS 6274/7) while doing this.
• The tensioning procedure is ended when the (VAS 6274/4) touches the bearing on the (VAS 6274/2) or when the collar bolts on the anti-twist mechanism reach the end stop.
• Make sure the collar bolts do not touch the pressure plate stop when applying tension.
• The pressure plate anti-twist mechanism must not tough the pressure plate stop.
- Remove the tensioned coil spring carefully.
• Tensioning the coil spring or reducing the tension may only be performed inside the vehicle or in the hydraulic tensioner (VAS 6274/9).
• Never reduce the tension on the coil spring by turning the (VAS 6274/3) because the spindle is too short. A tensioned spring is under high pressure.
- Place the tensioned coil spring in the (VAS 6274/9) in the correct position and slightly apply tension on the coil spring using the hydraulic pump.
• The open end of the spring coil must touch the mounting plate stop.
- Turn the (VAS 6274/3) using the (VAS 6274/6) from the (VAS 6274/4) and remove it from the spring.
Risk of accident! The coil spring is now being held by the (VAS 6274/9).
- Reduce the load on the tensioning device on the (VAS 6179) until the guide - 1 - is at the marking - arrow -.
- Remove both collar bolts - arrows -.
The collar bolts may be remove only when the coil spring is completely relaxed.
- Remove the (VAS 6274/2) from the coil spring.
- Install the (VAS 6274/5) in the (VAS 6274/4).
- Move the safety lever - 1 - on the (VAS 6274/1) in - direction of arrow -.
- Remove the (VAS 6274/4) from the locking thrust plate.
- Remove the (VAS 6274/1) from the coil spring.
- Reduce the load on the Spring Tensioning System by the pneumatic /hydraulic foot pump and remove the coil spring from the (VAS 6274/9).
Installing
- Place the coil spring in the (VAS 6274/9) in the correct position and pretension the coil spring on the pull rod by operating the hydraulic pump.
• The guide - 1 - must at the marking - arrow -.
- Place the (VAS 6274/1) in the coil spring.
- Insert the (VAS 6274/4) into the (VAS 6274/1) using (VAS 6274/5).
- Secure the (VAS 6274/4) with the safety lever - 1 - - arrow -.
- Remove the (VAS 6274/5).
- Place the (VAS 6274/2) in the coil spring as illustrated.
- Mount the (VAS 6274/3) on the (VAS 6274/6) and thread it into the (VAS 6274/4).
- Turn the (VAS 6274/1) and (VAS 6274/2) into its maximum tensioned position without using force.
• 41/4 to 43/4 spring coils must be between both pressure plates in order to be able to compress the different spring to the smallest dimension possible.
• Move the anti-twist mechanism upward 180° if necessary and then turn (VAS 6274/1) 180° again (41/4 to 43/4 spring coils).
- Remove the socket again.
- Turn both the (VAS 6274/1) and (VAS 6274/2) toward each other so that both anti-twist mechanisms can be attached to each other.
- Tighten the collar bolts - arrows - hand-tight.
• The anti-twist mechanism must be at the top of the pull rod, as illustrated.
Apply tension or reduce the tension on the spring coils only when both anti-twist mechanisms are attached to each other with the collar bolts - arrows -.
- Place the guide bushing - arrow - for centering the (VAS 6274/3) in the (VAS 6274/9).
• The collar on the spindle must touch the guide bushing later.
- Operate the hydraulic pump, slowly tension the coil spring and turn the (VAS 6274/3) at the same time using (VAS 6274/6).
• The tensioning procedure is ended when the (VAS 6274/4) touches the bearing on the (VAS 6274/2) or when the collar bolts - arrows - on the anti-twist mechanism reach the end stop.
- Slowly open the valve on the hydraulic pump and remove the tensioned coil spring from the (VAS 6274/9).
- Place the tensioned coil spring in the vehicle in the correct position.
• Pay attention the correct positioning of the rubber bushing at the top and bottom.
Risk of accident! Do not use a pneumatic impact wrench to apply tension or release tension on the coil spring.
- Turn the (VAS 6274/6) to release the tension on the coil spring. Hold the spring compressor steady using (VAS 6274/7).
- Remove the (VAS 6274/3) from the (VAS 6274/4) using (VAS 6274/6).
• It is easier to remove the spindle if the opening on the (VAS 6274/1) faces outside.
- Remove the collar bolts - arrows - from the anti-twist mechanism.
- Turn the (VAS 6274/2) slightly upward and remove it from the coil spring.
• If it is not possible to remove the pressure plate from the coil spring, remove the anti-twist mechanism, remove the pressure plate from the coil spring and tighten the anti-twist mechanism again.
- Turn the (VAS 6274/1) downward slightly.
- Install the (VAS 6274/5) in the (VAS 6274/4).
- Move the safety lever - 1 - on the (VAS 6274/1) in - direction of arrow -.
- Remove the (VAS 6274/4) from through the hole in the transverse link.
- Remove the (VAS 6274/1) from the coil spring.
- Release the tension on the (VAS 6274/8) and remove it.