Slack Adjusters are the linkage between operating rod in the brake chamber and s-cam (drum brakes) or disk brakes in an air brake system. The main function of slack adjusters is to transfer motion from air brake actuating rod to 's-cam shaft'. They can be adjusted manually for brake lining wear. Chiefly, there are two types of slack adjusters:

Reconditioned Tool

1) Manual Slack Adjuster: These need to be adjusted using a wrench and you do this by getting underneath the truck. The Automatic adjuster automatically adjust themselves through the normal use of brake.

Reconditioned Tool

2) Automatic Slack Adjuster: In this, the distance between the wall of brake drum and brake lining is adjusted automatically. In a truck or trailer, we must not exchange them with the manual ones and vice-versa. The automatic adjusters are an improvement over the manual ones and eliminate the periodic adjustments. That said, even the automatic ones are not maintenance free.

Be sure to install the new slack adjuster in the same position as the old one or it will not function properly. Also, never use a reconditioned one. Vehicles in which brakes are used frequently, the slack adjuster should be checked more often. Greasing is always recommended in order to prolong the life of the adjuster. In fact, it is recommended to do greasing after every 25,000 kilometers and before the installation of slack adjuster. That is why we should warn the truck and trailer drivers to check the status of brake shoe, brake linings, springs and brake drums.

What Are Slack Adjusters?

Reconditioned Tool

Black Friday Bare-Tool Makita BDF451Z 18-Volt LXT Lithium-Ion Driver/Drill (Tool Only, No Battery) 2011 Deals

Nov 14, 2011 23:47:46

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>> Click here to update Black Friday prices for Bare-Tool Makita BDF451Z 18-Volt LXT Lithium-Ion Driver/Drill (Tool Only, No Battery) <<

Black Friday Bare-Tool Makita BDF451Z 18-Volt LXT Lithium-Ion Driver/Drill (Tool Only, No Battery) Feature

Makita-built 4-pole motor delivers 560-Inch-Pound of max torque, with a variable 3-speed all metal transmission (0-300/0-600/0-1,700 RPM) for a wide range of applications
Compact, ergonomic design at only 9-3/8-Inch long; weighs just 4.6-Pound
Features such as the shift-lock drive system to quickly shift between modes; 2 built-in L.E.D. lights illuminate the work area and a rugged tool belt clip
Makita LXT lithium-ion battery and energy star rated 30-Minute rapid optimum charger produces 430-Percent total lifetime work with 2.5X more cycles
3-Year warranty on tool

Black Friday Bare-Tool Makita BDF451Z 18-Volt LXT Lithium-Ion Driver/Drill (Tool Only, No Battery) Overview

The Makita BDF451 is a 18V 1/2" LXT Lithium-ion Driver-Drill Kit. The LXT Lithium-Ion battery and optimum charging system produces 280% more lifetime work with 2x more cycles. Makita built, 4-pole maximum torque motor delivers 560 in-lbs of torque in a compact size. The compact design is 9-3/8" in length and weighs 4.6 lbs The ergonomic shape fits like a glove with even pressure and easy control.

Black Friday Bare-Tool Makita BDF451Z 18-Volt LXT Lithium-Ion Driver/Drill (Tool Only, No Battery) Specifications

The Makita 18V LXT Lithium-Ion Cordless 1/2-Inch Driver-Drill delivers more torque, more efficient speed and more work to the jobsite. The BDF451Z has a three-speed all-metal transmission for a range of drilling and driving applications, with plenty of torque for heavy duty tasks.

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BDF451Z Features

POWER - Makita-built 4-pole motor delivers 560 in.lbs. of Max Torque

PERFORMANCE - LXT Li-Ion batteries charge in 30 minutes, run longer and deliver 2.5X more cycles

COMFORT - Less weight with ergonomic grip

CONTROL - 3-speed all-metal transmission, easy-mode shift and 2 built-in L.E.D. lights

Battery and charger not included

Tool Specifications

Capacities	Steel (1/2"), Wood (2-9/16")
No load speed	0-300, 0-600, 0-1,700 RPM
Maximum torque	560 in.lbs.
Battery	18V LXT Lithium-Ion
Overall length	9-3/8"
Net weight	4.6 lbs. (w/battery)

Makita-Built Motor Engineered for Versatile Power
The BDF451Z features a Makita-built four-pole motor that delivers 560 in.lbs. of Max Torque in a compact size. The BDF451Z has a three-speed all-metal transmission that delivers 0-300 RPM in low speed, 0-600 RPM in mid-speed and 0-1,700 RPM in high, covering a wide range of drilling and driving applications.

Ergonomic Design in a Compact Size
The BDF451Z weighs just 4.6 pounds (with battery, sold separately) with a more compact design at 9-3/8 inches long and an ergonomic shape that fits like a glove for reduced operator fatigue. The BDF451Z is also equipped with a built in L.E.D. light that illuminates the work area for more efficient work.

Versatile Design for a Range of Applications
The BDF451Z is perfect for a range of driving and drilling into wood and steel, and can be utilized in many different areas such as HVAC, electrical, plumbing, electrical, remodeling, woodworking, and more. The combination of high-speed and high-torque makes the BDF451Z ideal for any pro contractor who requires a best-in-class engineered cordless driver-drill. The BDF451Z is just another example of Makita's commitment to innovative technology and best in class engineering.

About Makita's 18V LXT Lithium-Ion Cordless Tool Series
As one of the pioneers driving the cordless tool revolution, Makita changed the game with its breakthrough 18V LXT Lithium-Ion Cordless Series. Three years after its debut, Makita's LXT Series has grown from seven to over 35 tools, providing a wide range of cordless solutions for professional tradesmen. Makita also added 18V Compact Lithium-Ion for cordless power in a more compact size. Makita's 18V Lithium-Ion batteries and ENERGY STAR rated Optimum Charging System provide several benefits over old battery technology. When compared to traditional 18V Ni-Cd batteries, Makita's 18V Lithium-Ion batteries have 40% less weight, longer run time, and five-times lower self-discharge to keep cells active and ready to use at any time.

Makita's 18V Lithium-Ion battery delivers 2,000 cycles--2.5X more than Ni-Cd. In addition, built-in shock absorbing features help protect the battery, and sixteen firm-holding contact terminals deliver constant high power. During the charging process, a built-in memory chip in the battery communicates with the Optimum Charger for a more efficient charge, extending the battery life. Makita's Optimum Charger is also faster: it will charge an 18V LXT Lithium-Ion battery in just 30 minutes, and an 18V Compact Lithium-Ion battery in only 15 minutes. Makita also offers a Rapid Automotive Charger for 18V LXT and 18V Compact Lithium-Ion batteries that plugs into 12V DC sockets equipped in most automobiles and trucks for added mobility. Makita's growing line of LXT cordless tool solutions features a wide range of industrial-quality power tools, including driver-drills, impact drivers, impact wrenches, saws, grinders, screwguns, rotary hammers, and more. The LXT Series also offers a jobsite radio, rechargeable flashlights, and several different combo kits.

About Makita
Makita is a worldwide manufacturer of industrial quality power tools and offers a wide range of industrial accessories. Makita applies leading-edge innovation to engineer power tools that are more compact and energy efficient, yet deliver industrial strength power and results. Makita U.S.A., Inc. is located in La Mirada, California, and operates an extensive distribution network located throughout the U.S. For more information, please call 800/4-MAKITA (800/462-5482) or visit makitatools.com. Makita is Best in Class Engineering.

Warranty
Every Makita Lithium-Ion tool is backed by Makita's 3-Year Warranty that covers repair due to defects in materials or workmanship up to three years from the date of original purchase. Makita Lithium-Ion batteries and chargers have a limited 1-year warranty. Please see makitatools.com for complete details.