Air Brake Relay Valve on Volvo Truck FM 440 – Air Braking System

Air Brake Relay Valve on Volvo Truck FM 440 - Air Braking System

Air Brake Relay Valve on Volvo Truck FM 440 – Air Braking System. How It Works ??

Peace be upon you, and Allah’s mercy and blessings.
Welcome to the BIGGY FERI Youtube Channel

In this video, I will explain one component of the Air Brake System on Volvo FM 440, the Relay Valve.

On Volvo FM 440, the Relay Valve is used for “Relay Valve Parking Circuit” and “Relay Valve Front Circuit”.
So both components are used the same.

On this Relay Valve there is a sign (code number) on each hole.

1 = Input (Supply) of air from the Parking Tank

2 = Output (Delivery) of air to the Brake Chamber on the Parking side

3 = Evacuation (Drain)

4 = Air signal from “Hand Parking Brake”

For more details, see the video until the end ..

May be useful..

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Semi Truck Burns To The Ground! Needs A Pick Me Up! BBQ Time

Semi Truck Burns To The Ground! Needs A Pick Me Up! BBQ Time

In today’s video Trent Jr in the rotator responds to WB i10 E/O Indio California for a CHP callout on a fully burned tractor and empty trailer. Upon arrival, it is determined that the best course of action is to call 2 trailers out and load the tractor and front half of the trailer onto one of our trailers and then load the remaining trailer onto our other trailer. After this is all complete we use our skip loader to clean the burnt debris. Enjoy!

Thanks for watching as always LIKE, COMMENT, SUBSCRIBE, and SHARE the HECK out of this video!

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Trent Butzlaff
83827 Tamarisk Street
Indio, CA 92201

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– – – – Frequently Asked Questions – – – –
Q:What camera do you use?
A: I use the Go Pro Hero 7 Black Edition primarily. Often times you will see auxillary cameras in use. Those cameras include The Go Pro Hero 6, Hero, and DJI Mavic Pro Platinum

Q: How big Is your rotator?
A: It is a 50 ton Miller Industries Vulcan 950

Q: Does the carriage slide back like Ron Pratt’s?
A: No, the carriage doesn’t slide back due to strict weight laws in California. The sliding carriage will make the truck to heavy in CA

Q: Why do you only have 3 winches on the rotator?
A: Comes down to weight again as stated above

Q: How many trucks Does Plaza Towing have?
A: Currently more than 30

Q: Why must the driveshaft be removed to tow a vehicle?
A: When vehicles are not running the transmission is not receiving circulating lubricant. If the driveshaft is left installed, the transmission, which is not receiving lubricant, is still spinning. This allows it to get very hot which eventually will cause major damage to the transmission. Therefore, removing the driveshaft completely eliminates the transmission from spinning. Simply leaving it in neutral is not sufficient since the transmission still spins in neutral.
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US 281 Truck & Trailer Services LLC – Truck repair shop in South Texas – minimum TAT for issue fix.

US 281 Truck & Trailer Services LLC - Truck repair shop in South Texas - minimum TAT for issue fix.

We are a premium truck and trailer repair shop in Edinburg Texas with the best diesel mechanics, road service techs, frame extensions, paint, and body works experts, mobile truck repair experts, and frame extension experts, etc in Edinburg and South Texas.

We do state inspections on and repair and sell all American commercial semi-trucks like Freightliner, Peterbilt, Kenworth, Volvo, Mack, International, Navistar and so on.

Our diesel mechanics can do everything from an oil change to an engine swap on all commercial trucks and heavy equipment diesel engines like CAT, Cummins. Maxxforce etc and even on heavy equipment that runs on diesel like generators in the Edinburg water pumping station.

Our advanced truck diagnostic laptops plug into your truck’s ECU (Electronic Control Unit) or ECM (Electronic Control Module) and diagnose the issue and fix it in record time. Same day service is what we are known for among truckers of South Texas and Rio Grande Valley.

Visit us and check out our ongoing truck and trailer repair projects anytime between 7:30 am and 5:00 pm on weekdays and 8:00 am

and 12:00 pm on Saturdays at the US 281 Truck & Trailer Services LLC diesel truck and trailer repair shop In Edinburg, Texas – 101 Pennzoil Loop South, Edinburg, TX 78542.

For all your truck and trailer repair needs call Gabby (956)783-8991 or Jorge Lopez (956)293-9896 or visit us at –
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The Ford F-650 Is a $150,000 Super Truck

The Ford F-650 Is a $150,000 Super Truck



The Ford F-650 is a super truck — and it’s crazy. Today I’m reviewing the Ford F-650, and I’m going to show you around one of the largest pickup trucks in the world. I’m also going to show you all the quirks and features of the Ford F-650 super truck.


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Arnott A-3307 – Video Installation for Volvo XC90, XC60 and V90 SPA platform models

Arnott A-3307 - Video Installation for Volvo XC90, XC60 and V90 SPA platform models

This video is designed to inform ASE certified mechanics how to remove and replace a failing Volvo SPA platform rear air with a new Arnott designed air spring.

Arnott’s aftermarket rear air spring A-3307 fits Volvo SPA platform models equipped with optional electronically controlled air suspension including the 2016-2019 XC90, 2018-2019 XC60 and 2017-2019 V90 Cross Country, excluding hybrid models. The Arnott air spring features a cross-corded, multi-ply, ContiTech air sleeve engineered for extended service life. Arnott assembles this air spring in the USA with Tier 1 components such as heavy duty crimp rings, high impact resin top and piston, dust cover and 6MM air line fitting for a fast installation. This universal air spring fits the left or right side of the vehicle.

Note: Arnott recommends replacing these air springs in pairs.
Engineered & Assembled in the USA


* Engineered and Assembled in the USA
* Universal Air Spring Fits Left or Right
* Cross-Corded Multi-Ply Air Sleeve
* Heavy Duty Crimp Rings
* Installation Manual Available

For more information about Arnott’s aftermarket Volvo Air Spring Click Here:
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