Bottle jacks

Bottle jacks are widely used when performing repairs under the car bottom or changing wheels. They are often a part of the car’s standard equipment. Their design is based on a hydraulic cylinder with a piston. The lifting force is provided by pumping oil into the chamber under the piston, using the pump lever. This makes the piston move up and raise the car.

Types of bottle jacks

By actuation type:

• Manual. The fluid is pumped by moving the lever. Easy to use, compact. Do not require any additional equipment. They are easy to use on the spot.
• Air/pneumatic. Fluid in the cylinder is pumped by an air compressor. Operate faster than hydraulic ones. Designed to lift heavy loads. Air jacks are characterised by large dimensions and are heavy.

By the number of plungers:

• Single-acting. Simple and reliable. Their minimum height and lift height are permanent.
• Double-acting. These have a telescopic cylinder. The minimum height and lift height can be adjusted.

Operating instructions for bottle jacks

• Do not use this device to keep loads hoisted. After lifting your vehicle to the required height, use jack stands to support it.
• Never use a device with the lifting capacity that doesn’t fit your car’s weight.
• Always place the device onto an even solid surface to prevent it from slipping out.
• To protect your vehicle’s bottom from damage, place a special rubber pad on the saddle of the device.
• The device must be stored upright with its plunger fully lowered.
• To avoid corrosion, you should lubricate moving parts from time to time. Air humidity in the room where the device is stored shouldn’t exceed 80%.
• For refill, you should only use the hydraulic oil recommended by the manufacturer.
• In order not to damage seals and gaskets, do not use any abrasive or aggressive chemicals for cleaning your bottle jack.
• When using the device, avoid touching its joints and the telescopic mechanism as this might cause injuries.

Professional help from Buycarparts.co.uk

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