Low air leaf ride height

to set ride height . and adjust rear . axle angles. on those vehicles.. This . ... LOW AIR LEAF (Srngle. axle conirgurations burll. on & atter 4/904) and. SOUEEZ E ...

Low air leaf ride height. to set ride height . and adjust rear . axle angles. on those vehicles.. This . bulletin . supersedes the information . on "Measuring . Pinion Angle" and "Setting . Air. Spring Height ... LOW AIR LEAF (nrcludes . Single a) configuralons burll. belore 4/Y04) DOES PROPER INOICATOR . GROOVE. APPEAR IN TOLEMNCE BOX? YES. G@D. NO. ADJUST …

I have done my research but am looking for a little more information. I have a 98 379 with low air leaf suspension. My ride height was set at 6.5″ from bottom of frame to center of axle. Rear sagged a bit before especially when loaded and was pretty bouncy. How to tell if a Peugeot 379 has low air leaf? I had a 98 pete 379 and a 2003 .Low air ...

Shawn Warman discusses how to check the Ride Height Adjustment & Suspensions on your Peterbilt truck. Visit Peterbilt Atlantic anytime at: …Not that much but the ride is better then with the air shocks. Tell the truth, my son and I just finished changing all the wheel cylinders, and installed new muscle car brake shoes all around. We also installed kyb shocks in the front and the load levelers 557B210 (Dave) recommended, and that member Lambergy (Larry) recommended and sent me.Blocks for leaf springs to adjust their ride height (up or down) the leaf spring suspension has not been raised by any other means, and; the leaf spring blocks are: securely fitted, and; constructed from metal, and; designed for the purpose, and; firmly seated over not less than the O.E. seat area, and; not more than 50mm in height, andNikki asks, “What should I do about the black spots covering the leaves of my 'Carissa" hollies? Will this do long-term damage to my hollies?"It sounds like your holly plants have ...Ride with Uber? You should know how to double-dip your rewards earning with Air Canada Aeroplan and Marriott Bonvoy. Plus, you earn even more with Uber Rewards. Over the past 10 ye...Peterbilt low mount air leaf torque rod. 25-9/16 inch center-to-center. Replaces Peterbilt 943711 and 03-05108. Includes TS38000 Polyurethane bushings. Trustpilot. Read Reviews. ... They also simply zero out to ride …Posted 9/27/2011 16:45 (#1981087 - in reply to #1981058) Subject: Re: Peterbilt 379 Day Cab Air Ride. LOW AIR LEAF IS 15.5 FROM THE BOTTOM OF THE FRAME TO THE BOTTOM OF THE AIR BAG BELL BASE. MEASURE BOTH THE FRT AND REAR DRIVER ON EITHER THE R/H OR L/H SIDE AND ADJUSTED THE RIDE HEIGHT TIL IT AVERAGES 15.5.Peterbilt low mount air leaf torque rod. 25-9/16 inch center-to-center. Replaces Peterbilt 943711 and 03-05108. Includes TS38000 Polyurethane bushings. Trustpilot. Read Reviews. ... They also simply zero out to ride …

Pressure regulator set too low Wrong air spring Improper ride height Broken or defective Y Blade assembly Low air pressure Tracking Thrust alignment incorrect ... Mack Twin Y Air Suspension Ride Height and Driveline Angle Check Flow Diagram W7000749. Mack Trucks, Inc. Date Group No. Release Page Service Bulletin 6.2013 726 02 1 12(12)Mar 4, 2016 · My '99 is doing a nose dive, the airbags on the rear axle are inflated too much whereas the front drive airbags are at the correct height. I just had the entire front suspension replaced, including new front springs. I thought because the front end was worn out it would cure this issue. The Mechanics at Peterbilt do not have any idea why it is ... Air suspension reduces the tendency of short wheelbase trucks to bounce over rougher roads and terrain when the vehicle is empty. Air suspension improves the ride height based on the load weight ...This pair let my car sit a little too low in the back, so I replaced them with a pair that had more arch. You can buy a pair of front halves from directly from Caltrac (I think they cost $150 for two front halves). This sale includes the rear halves plus urethane bushings for the shackle end. $40 plus shipping. Like.FRAME HEIGHT CHARTS 3-11 REAR SUSPENSION LAYOUTS 3-18 Reyco 79KB Single 3-19 Reyco 102AR Single 3-20 Neway ADZ252 3-21 Neway ADZ369/378 3-22 Peterbilt Air Leaf 3-23 Peterbilt Air Trac Single 3-24 Peterbilt Air Trac Tandem 3-25 Peterbilt Air Trac Tri-Drive 3-26 Peterbilt Low Air Leaf 3-27 Chalmers 854 3-28 …

Air Canada is running a fall flight sale between the U.S. and Canada with one-way fares beginning at $70. Update: Some offers mentioned below are no longer available. As the famed ...If you’re thinking about buying an electric bicycle, you’re in for lots of fun. You’ll be able to enjoy a smoother ride and a more eco-friendly commute, and you’ll find even more o...Changing ride height What settings would i change to make the ride height of a car to be taller. < > Showing 1-6 of 6 comments . Nadeox1. Oct 3, 2017 @ 5:30am You first need to be using a vehicle or 'Suspension' parts that has the ability to be modified like that. Usually the offroad suspensions (On the D-Series, Roamer and so on) have that ...In fact, air ride was popular in drag racing and NASCAR as far back as the 1950s. There’s also plenty of race cars and drifters running air suspension right now, more than you may think. When it comes to tuneability, with air suspension the ride can be firm and tight, soft and comfortable or anywhere in between.Air Springs. Air Ride Suspensions. Air Tanks. Semi Truck Bumpers. Cab Mate Suspensions. Cat's Eye Tire Pressure. Coil Springs. Coil Springs - Heavy Duty. Dorman. Helper Kits - Leaf Spring. Landing Gear - Trailer. Leaf Springs. Leaf Spring Accessories. Lift Axles. Precision Polyurethane. Roadactive Suspension. Shock Absorbers. Steering ...Air Suspension Leveling valve Discussion in 'Peterbilt Forum' started by RERM, Apr 17, 2018. Apr 17, 2018 #1. RERM Road Train Member. 1,683 1,123. Dec 13, 2012 ... The ride height is where the noticable change was felt. Get in habit of having it checked and adjusted regularly. Suspension ride height changes driveline angles and …

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Posts: 2,394. British Columbia. Yes, the factory has the ground to rocker panel height specs: Front- 8.4" at 33" behind the center of the front wheel: Rear, 8.10" at 29" ahead of the center of the rear wheel. Those numbers go out the window as soon as you replace the stock tires.Peterbilt’s proprietary Front Air Leaf Suspension includes a wide, flat, lower leaf front spring design to enhance control and an upper leaf for better roll stability and handling. The system is available on some truck models with suspension weight capacities from 12,000 to 13,200 lbs. The design uses four air springs.One of the key features of the Peterbilt Low Air Leaf suspension system is its ability to adjust the ride height. This can be done by adjusting the air pressure in the air springs. …You use that number to get the correct height. Per Navistar, that vehicle should have a 11.5" ride height for standard leaf and 8.75" for low leaf. 1. Determine the vehicle’s correct suspension ride height for …Dayton Parts 338-725 Spring Eye U-Bolt Clamp Plate for Peterbilt Air Leaf, OEM# 03-01657. Part# 797-338725. $18.24 USD. 1. Meritor M85311 Allfit Standard Duty Shock Absorber. Part# 320-85311. $71.87 USD Not Yet Rated. 889069 Air Bag, Replaces Peterbilt 03-01649, 03-02456, and 03-04759 & Firestone W01-358-9069.Kenworth brands this suspension as an AirGlide 380; on a Peterbilt this same suspension is named a FlexAir. Key identifying feature: the C-shaped spring link. ATRO offers replacements for the spring link bushings SU00-29001 (straddle) and the SU00-29002 (hollow mount) The suspension contains six torque rods: two transverse, two lower front, …

If you’re thinking about buying an electric bicycle, you’re in for lots of fun. You’ll be able to enjoy a smoother ride and a more eco-friendly commute, and you’ll find even more o...2002 PETERBILT LOW AIR LEAF Cutoff (Tandem) Ratio: 3.55. VIN #: 1XP5DB9XX2D574427. USED USED 2002 PETERBILT 379 CUTOFF LOW AIR LEAF. HAD EATON DSP40 & RSP40 REAR ENDS. Create Estimate. Part Info. (205)221-5203 Request Info Enterprise Nli Sales, Inc. Jasper JASPER AL. $4,000.00.BWP PE10B Spring Eye Casting, Peterbilt Low Air Leaf (Up to 2003) Part# 130-PE10B. $61.43 USD Not Yet Rated. PTP PE9ZPTP Pivot Bushing Kit for Peterbilt Low Air Leaf Suspensions, OEM# 03AL2. Part# 130-PE9ZPTP. $65.28 USD Not Yet Rated. 5/8"-18 x 5" Bolt Assembly with Lock Nut and Washers. Part# 797-334770. $7.09 USD Not Yet Rated.This ride height needs to reflect proper ground clearance (at least 4 1/2 inches) and adequate suspension travel (at least 3-inches compression and 2 inches in rebound). After that, start looking ...What's the proper air ride height for 2002 international 9400 sleeper trk? It has low pro 22.5 tires - Answered by a verified Technician. We use cookies to give you the best possible experience on our website. ... 2001 379 …RE: air leaf heights. If the OP is concerned that the overall height with the trailer on is low at 13'4" high instead of 13'6" high. Almost every truck on the road, the …If you have a big yard, your riding lawn mower is probably a gadget you can’t afford to have break down. During the summer, just a week without mowing can leave you with a lawn ful...According to Scrap that truck has "Low Air Leaf" suspension. The shocks are behind the axle housing canted in and mounted to a crossmember in the frame. ... 1/2 of tire diameter from mfg data sheet plus 9 inches Low Air Leaf ride height plus 10 …

For 379 Pete with Low air leaf or Flex air suspension your laden ride height is 8.5" or 216 mm and uladen air ride height is 8.75" or 222 mm. Air Leaf 12" or 305mm unladen and 11.70" or 297 mm laden. Air Trac 11.38" or 289 mm uladen and 11.00" or 279 mm laden. Low Low Air Leaf 6.75" or 171 mm uladen and 6.5" or 165 laden.

Aug 14, 2023 · Air Trac; The Air Trac is a Leaf Spring + Air Spring combination that features a Lower Radius Rod in parallel to the spring. The radius rod provision strengthens and stabilizes the suspension vertical alignment. The Lateral Torque Rod stabilizes lateral axle movement. Air Leaf with Tracking Rods; Low and Low-Low Air Leaf Tandem (built April ... Jun 17, 2015 · Peterbilt’s proprietary Front Air Leaf Suspension includes a wide, flat, lower leaf front spring design to enhance control and an upper leaf for better roll stability and handling. The system is available on some truck models with suspension weight capacities from 12,000 to 13,200 lbs. The design uses four air springs. Navistar pn: Description Aftermarket pn 1670043C1: Air Spring: Goodyear: 1R12-401: 2027912C1: Air Spring: Goodyear: 1R12-324: 1660581C1, 501559C1/2: Air Spring ...In fact, air ride was popular in drag racing and NASCAR as far back as the 1950s. There’s also plenty of race cars and drifters running air suspension right now, more than you may think. When it comes to tuneability, with air suspension the ride can be firm and tight, soft and comfortable or anywhere in between.May 29, 2023. To lower a leaf spring suspension, remove the bottom leaf spring from the pack. Lowering your vehicle can provide better stability and improved appearance. Leaf springs are stacked together, and the bottom leaf spring typically carries the heaviest load. Removing it will result in a lowered ride height.Cebu Pacific Air is one of the leading low-cost carriers in the Philippines, offering affordable and convenient flights to various domestic and international destinations. When boo...It appears you have Air -Trac and not air leaf. The ride height needs to be measured from axle center to the bottom of the frame. If set on level ground your bag height should be the same from front to rear drive and be close to the same height. My first thought is you are set too low. Should be 10.5 unladen.

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Brand new 2022 peterbilt 389. Has factory front air ride…. Brand new 2022 peterbilt 389. Has factory front air ride with one leveling vavle on the passenger side. The truck sits low on the drivers side with front bags inflated. Do you recommend adding another leveling valve to the drivers side to get truck to sit level?They can print this info off it'll be 3 or 4 pages explaining how to set the ride height. You can do it yourself in about 15 minutes it's a really simple thing. You'll probably need a 7/16 socket to loosen adjustment bolts on the level valve and a tape measure. Make sure you are parked on a flat level spot when you do. FRAME HEIGHT CHARTS 3-12 . REAR SUSPENSION LAYOUTS 3-19 . Reyco 79KB Single 3-20 . Reyco 102AR Single 3-21 . Neway ADZ252 3-22 . Neway ADZ369/378 3-23 . Peterbilt Air Leaf 3-24 . Peterbilt Air Trac Single 3-25 Low and Low-Low Air Leaf Tandem (built April 2004 or later) and Flex Air; Low and Low-Low Air Leaf Tandem (built prior to April 2004) ... If the Ride Height is lower than normal, the Air Bag internal Bump stop contacts more often, resulting in a Harsh Ride Quality; Check, with a pressure gauge whether the air compressor produces the required ...Description. International Ride-Optimized Suspension. This suspension is similar in concept to the Freightliner FAS II and Peterbilt’s New Low Air Leaf. The biggest maintenance concern is the bonded bushing in the spring eye. Commonly, it …To ride in the front seat, children must be at least 13 years of age and they must be properly buckled. Never sit a young child in front of an air bag or in the front seat while in...For the rear of your truck, you can get leaf springs that lower the ride height two to three inches. If you combine those springs with new lowering spring eye hangars, the rear can drop four inches.Description. International Ride-Optimized Suspension. This suspension is similar in concept to the Freightliner FAS II and Peterbilt’s New Low Air Leaf. The biggest maintenance concern is the bonded bushing in the spring eye. Commonly, it will open up and the bushing can walk out. ….

Description. This air suspension has a maximum capacity rating of 46,000 pounds. It features lower radius rods that strengthen and stabilize the suspension but tend to cause a rougher ride quality than the Air Leaf or Low Mount Air Leaf. I have a 98 379 with low air leaf suspension. My ride height was set at 6.5″ from bottom of frame to center of axle. Rear sagged a bit before especially when loaded and was pretty bouncy. How to tell if a Peugeot 379 has low air leaf? I had a 98 pete 379 and a 2003 .Low air leaf. I measured from underside of the frame to the outer edge of the ...Jun 17, 2015 · Peterbilt’s proprietary Front Air Leaf Suspension includes a wide, flat, lower leaf front spring design to enhance control and an upper leaf for better roll stability and handling. The system is available on some truck models with suspension weight capacities from 12,000 to 13,200 lbs. The design uses four air springs. Posted 1/5/2017 07:30 (#5745550) Subject: 379 Peterbilt air leaf ride height? We're going to put new fenders on the rear axles and I would like to set the ride height before we …Perform a ride height check, following the instructions in the section titled Freightliner Airliner Rear Suspension, in Group 32, of the applicable workshop/service manual. 4. Check the AirLiner leaf-spring bushing pins for wear or walk-out (off-center placement). ... If the second bolt aligns with the air-spring mounting bolt and nut, the leaf ...Performance Suspension Specialist. Ridetech manufactures exciting suspension systems that improve the handling and ride quality of your muscle car, truck, Corvette or hot rod. From restorations and show cars, to high-speed autocross and track day cars, Ridetech offers a wide range of premium products including air suspension systems (air ride ...350. 54. Dec 13, 2013. 0. Not sure if im still having ride height issues or not. 09 389 low air leaf. I changed the levelling valve and set ride height to 8.5”. Now on gravel roads the …Kenworth - Air Glide 130 (Peterbilt Front Air Leaf®) Front Air Suspension Key: Part Number: Description: No. Req: OEM Reference: Remarks: 1: 338-2349: HangerFRAME HEIGHT CHARTS 3-11 REAR SUSPENSION LAYOUTS 3-18 Reyco 79KB Single 3-19 Reyco 102AR Single 3-20 Neway ADZ252 3-21 Neway ADZ369/378 3-22 Peterbilt Air Leaf 3-23 Peterbilt Air Trac Single 3-24 Peterbilt Air Trac Tandem 3-25 Peterbilt Air Trac Tri-Drive 3-26 Peterbilt Low Air Leaf 3-27 Chalmers 854 3-28 … Low air leaf ride height, LIT NO: L388. DATE: November 2021. REVISION: K. The tables in this publication list the recommended or “designed” ride heights for all current Hendrickson trailer …, That's Pete Air Leaf. LAL has re-curved springs. In the shape of a "C". When pulling empty trailer, or bob-tailing, the rear-end does rise some. IIRC my Pete would come up about 3"s "Neuway" is another brand of air-ride suspension. But, Peterbilt is considered the 'top shelf' of them all. KW's 8 bag system is more complicated and seem to, 3. Change the Leaf Springs. Replace the old thick spring leaf with a new and light one. We would suggest going for a pack of many thin leaves instead of a pack of a few thin leaves. A pack of many thin leaves ensures that each thin leaf has a lower spring rate which makes your ride smoother. On the other hand, a pack of a few thin leaves is ..., Air suspension systems can automatically adjust the vehicle's ride height in one of two ways: pressure-based air suspension systems rely on a fixed, pre-set value that gives the car a particular ..., Dropping your C10 with a 2/4 drop (2-inch front/4-inch rear) is a popular upgrade. Lowering, or drop springs, are an extremely popular way to lower a C10 pickup. In general terms, you remove the stock springs (front, rear, or both) and replace with a lowering spring that will lower the vehicle a specific amount., Find many great new & used options and get the best deals for Speedway Motors HOTROD Front Frame Leaf Spring Perch Kit Low Ride Height at the best online prices at eBay! Free shipping for many products! ... Genuine Peterbilt 03AL2 Low Air Leaf Bushing Pb75-29101. 4.8 out of 5 stars based on 4 product ratings (4) $33.90 New---- Used;, Subject: Image Created Date: 20090616111528-0600, 52”. 54”, 60" (note 2) NA. - 72” with 100% Class A, wheelbase 200" or greater, 42,100 lb rating and Canadian service. Notes: Logger, chip hauler, and oilfield wire line services require the Air Trac rated at 44,000 lbs or higher. The axle spacings of 54" and 60" are optional on Low Air Leaf Tandem suspensions only. , Shawn Warman discusses how to check the Ride Height Adjustment & Suspensions on your Peterbilt truck. Visit Peterbilt Atlantic anytime at: http://www.peterbiltatlantic.com., Bracket Kit: Peterbilt Low Air Leaf (2005 & Later) $ 600.00 – $ 1,130.00. WTI Bracket Kits include suspension stops, frame plates and/or suspension mounts, fender mounting brackets, and stainless steel plates. Drilling and welding during …, The video plus Durallymax info led us to the proper ride height. Layed a level across the duals and measured to the floor, divided by 2 and added 11.7 to achieve the proper height....32". Got the fenders installed with time to spare.....thank you to all who replied! Edit: Robmar poly fenders. Great people to deal with and a great product., Mar 4, 2016 · My '99 is doing a nose dive, the airbags on the rear axle are inflated too much whereas the front drive airbags are at the correct height. I just had the entire front suspension replaced, including new front springs. I thought because the front end was worn out it would cure this issue. The Mechanics at Peterbilt do not have any idea why it is ... , C2 & C3 Corvette ride height guide. For your convenience, we have compiled a list of all available ride heights for 1964-1982 Corvettes, taken from their respective Assembly Instruction Manuals. Notice that the measurements get simpler as the years progress. The early years are very thorough, including how various options will …, Jun 25, 2009 · The Flex-air is about 55 lbs lighter but that shouldn't matter to you. Both state to have 8.5" ride heights. I personally can't tell much difference in the ride between the two. The Low-Air seemed to not roll quite so bad, but I was pulling two completely different trailers. I will tell you that I have gotten a lot better tire wear out of the ... , Aug 14, 2023 · Air Trac; The Air Trac is a Leaf Spring + Air Spring combination that features a Lower Radius Rod in parallel to the spring. The radius rod provision strengthens and stabilizes the suspension vertical alignment. The Lateral Torque Rod stabilizes lateral axle movement. Air Leaf with Tracking Rods; Low and Low-Low Air Leaf Tandem (built April ... , by Today's Trucking August 1, 2014. Peterbilt says its new proprietary “FLEX Air” tandem air suspension has the lowest installed weight of any comparable suspension-400 pounds less than Pete’s own Low Air Leaf. Rated at 38,000 pounds, the suspension uses a weight-efficient structure consisting of a very stiff, lightweight aluminum beam ..., Bracket Kit: Peterbilt Low Air Leaf (2005 & Later) $ 600.00 – $ 1,130.00. WTI Bracket Kits include suspension stops, frame plates and/or suspension mounts, fender mounting brackets, and stainless steel plates. Drilling and welding during …, Dec 18, 2022 · The suspension system (low air leaf) is a suspension system with a lower ride height and is used by many transportation companies because it allows their truck to hook up to a variety of trailers. , * High Quality Leveling Valve * Adjustable Linkage Kit For Height Control Valve * 18 Inch Rod With Ends And Hardware * Maximum Usable Length 19.500 Inches * Rod Can Be Cut For Shorter Applications * Sold Individually * Warranty On Leveling Valves Against Defects In Workmanship & Material From Date Of Purchase *** High Quality Aftermarket …, * High Quality Leveling Valve * Adjustable Linkage Kit For Height Control Valve * 18 Inch Rod With Ends And Hardware * Maximum Usable Length 19.500 Inches * Rod Can Be Cut For Shorter Applications * Sold Individually * Warranty On Leveling Valves Against Defects In Workmanship & Material From Date Of Purchase *** High Quality Aftermarket …, Wizz Air, one of the leading low-cost airlines in Europe, has a modern and efficient fleet that enables it to provide affordable air travel options to passengers across the contine..., Proprietary Rear Air Suspension Ride Height [inches (mm)] Single Drive Tandem Drive Air Leaf N/A 11.70 (297) Air Trac 11.00 (279) 11.00 (279) Low Air Leaf (before 4/5/04) 8.50 (216) 8.50 (216) Low Air Leaf (on and after 4/5/04) 6.50 (165) 8.50 …, You use that number to get the correct height. Per Navistar, that vehicle should have a 11.5" ride height for standard leaf and 8.75" for low leaf. 1. Determine the vehicle’s correct suspension ride height for …, Apr 19, 2011 · That's Pete Air Leaf. LAL has re-curved springs. In the shape of a "C". When pulling empty trailer, or bob-tailing, the rear-end does rise some. IIRC my Pete would come up about 3"s "Neuway" is another brand of air-ride suspension. But, Peterbilt is considered the 'top shelf' of them all. KW's 8 bag system is more complicated and seem to , Air Glide 210 Low Air Twisted Sister - Peterbilt - Air Glide® 210 Low Air Twisted Sister (Kenworth AG210/400L) Single/Tandem Axle Rear Air Sus ... Height Control; w/Dump: 1: 57977: w/Integral Dump: 15: 334-751: ... See Leaf Spring Section: 21: Find Spring: Assembly, Spring: 2 : See Leaf Spring Section: Pages. Coupons; Contact Form;, Nov 22, 2016 · Air trac ride height is 11.00 inches centerline of the axle to the bottom of the frame, average between axles should be within 1/2 in. Check to make sure that your tires are inflated equally and that you axle cross locks are fully disengaging. also make sure that your driveshafts are in phase, ie yolks on the same plane. , Convert your GM, Dodge, or Ford 1 ton cab chassis truck from Leaf springs to a true air ride suspension. Also available for F-450/550 and 4500/5500 trucks. Springs, Steering, and Suspension Specialists ... Maintains designed vehicle ride height: ... DRW Low Crossmember – 1 Inch higher than the OEM frame rail ..., BWP PE10B Spring Eye Casting, Peterbilt Low Air Leaf (Up to 2003) Part# 130-PE10B. $61.43 USD Not Yet Rated. PTP PE9ZPTP Pivot Bushing Kit for Peterbilt Low Air Leaf Suspensions, OEM# 03AL2. Part# 130-PE9ZPTP. $65.28 USD Not Yet Rated. 5/8"-18 x 5" Bolt Assembly with Lock Nut and Washers. Part# 797-334770. $7.09 USD Not Yet Rated. , In this video our mechanic demonstrates how to adjust the ride height on a Hendrickson Air Ride Suspension. For more information or to contact our service d..., Ride height is not adjustable. Adding shims or cutting the spring is the only means of adjustment with coil springs. Leaf spring would need to have a leaf added or removed. Load handling capability may be reduced. This is especially a concern for rear springs on trucks. May require shorter shock absorbers., In this video our mechanic demonstrates how to adjust the ride height on a Hendrickson Air Ride Suspension. For more information or to contact our service d..., Air Ride . Lift Axles; ... Valve, Height Control; Universal: 1: H00450CA: Hadley, Model 450HCV ... Peterbilt – Low Mount Air Leaf Single/Tandem Rear Air Suspension., Watch on. There are two major styles of suspensions for heavy-duty trucks out there, air ride and leaf spring, and knowing the difference between the two can be important based on your application. Watch the video above to learn more, and click here for more episodes of On the Road. Tags: On the Road, Season 5, Suspensions.