If the truck has good voltage etc but got shut down in gear it wont start until you put it in N. You've got some air but not sure if you have enough to fully release the brakes. If you can get it to start, let it build full air & release the park brakes. If she rolls thats a good sign. Chock the wheels have 1 guy watch each brake pot as you hold a full brake application (watch the pushrod doesn't spike your skull). if they all move freely -good. Pull the park brake & look at the angle of the slack adjuster vs the push rod of the brake pot. It should be around 90 degrees. If the slack arm is pushed farther back it may be worn out. With the wheels chocked release the park brake & use a wrench/socket to tighten the slack adjuster nut all the way tight. You'll see the brake shoes tighten to the drum if you look. Once it's tight - back off the slack adjuster nut 1/4 to 1/2 a turn *from the point you hear the first loud click* . If you're unlucky it'll be a rockwell style slack & you'll need a flathead or similar to pry the adjustment lock pin out while you do all this. Once you've tightened and adjusted all the slacks - start the truck and make sure you have full air (110-135 psi). With the park brake off give 6 full brake applications *slowly* pause and hold for a second on each one. Your brakes should now be properly adjusted - apply the park brake and look at those slack adjuster angles again. Last test is to release the park brake & slide the brake pot push rod plastic ring up to the back of the brake pot. If it doesn't have one mark it with a zip tie or paint pen on each brake pot. Apply a full brake application & have somebody measure the distance that the rod came out of the pot. If any of them are more than 2.5 inches you should prob take the truck to a real shop & have them do a full brake job. 2.5 is the max spec you'd want to see but there are 2 types of brake pot. You don't know how long that truck has sat & your brakes are the #1 safety item on your truck. Theres lots of videos on how to do these kidns of repairs yourself but know your limits - thems the brakes
You wrote all that and these late model trucks all have automatic slack adjusters, build your air pressure up and mash the brakes to the floor 3 times firmly and like 3 seconds apart but you can Google it and I’m sure it’s a video and if you can’t get a truck or trailer to move then cage the chamber’s !!! I’m just a girl trying to help so hopefully you can google this and see what I’m saying
i love me some sketching loading and unloading!
Gots to !
Oil samples and dyno is wise it’s going to tell you what you got
Okay great thank you
If the truck has good voltage etc but got shut down in gear it wont start until you put it in N. You've got some air but not sure if you have enough to fully release the brakes. If you can get it to start, let it build full air & release the park brakes. If she rolls thats a good sign. Chock the wheels have 1 guy watch each brake pot as you hold a full brake application (watch the pushrod doesn't spike your skull). if they all move freely -good. Pull the park brake & look at the angle of the slack adjuster vs the push rod of the brake pot. It should be around 90 degrees. If the slack arm is pushed farther back it may be worn out. With the wheels chocked release the park brake & use a wrench/socket to tighten the slack adjuster nut all the way tight. You'll see the brake shoes tighten to the drum if you look. Once it's tight - back off the slack adjuster nut 1/4 to 1/2 a turn *from the point you hear the first loud click* . If you're unlucky it'll be a rockwell style slack & you'll need a flathead or similar to pry the adjustment lock pin out while you do all this. Once you've tightened and adjusted all the slacks - start the truck and make sure you have full air (110-135 psi). With the park brake off give 6 full brake applications *slowly* pause and hold for a second on each one. Your brakes should now be properly adjusted - apply the park brake and look at those slack adjuster angles again. Last test is to release the park brake & slide the brake pot push rod plastic ring up to the back of the brake pot. If it doesn't have one mark it with a zip tie or paint pen on each brake pot. Apply a full brake application & have somebody measure the distance that the rod came out of the pot. If any of them are more than 2.5 inches you should prob take the truck to a real shop & have them do a full brake job. 2.5 is the max spec you'd want to see but there are 2 types of brake pot. You don't know how long that truck has sat & your brakes are the #1 safety item on your truck. Theres lots of videos on how to do these kidns of repairs yourself but know your limits - thems the brakes
Thank you ! I’ll try to work on it soon !
You wrote all that and these late model trucks all have automatic slack adjusters, build your air pressure up and mash the brakes to the floor 3 times firmly and like 3 seconds apart but you can Google it and I’m sure it’s a video and if you can’t get a truck or trailer to move then cage the chamber’s !!! I’m just a girl trying to help so hopefully you can google this and see what I’m saying
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W fr 👍