Troubleshooting: Dump Truck Pump and PTO Troubleshooting 

Thanks for this detailed explanation. It really helped out how PTO works.

3:28 as a former dump truck broker who had drivers, this would be a must! This would have saved me thousands and thousands of dollars in labor and hydraulic pump costs as beginning drivers forget to turn off their PTO leaving the job site. It’s also very dangerous for overhead obstacles. Great idea that should come standard with all new pumps. Also, an overall great explanation of how your hydraulic system works. This video should come standard with taking your DMV test for driving air brake vehicles that have hydraulics.

Thank you for this video. Seems nobody else has explained PTOs ' and pumps in the detailed way you have done here. I'll sure be checking your channel for any new troubleshooting videos . I searched hard for info on PTO's and was relieved to find this video !

Thanks for the video. I'm driving a Western Star 4900 offroad and trying to familiarize myself with some of this so if I find myself in an situation I can potentially fix it myself instead of waiting an hour or two for my mechanic to come to me. One issue that is common with offroad hauling is mud clogging the plunger and not letting the bed raise. I drove a Mack RD for a while when I was 22, but I quit driving trucks for a few years and now that I'm starting back I'm trying to remember this all.

Good video, thanks. Might also go into reversing the pump and plumbing options if you do another video.

Thinks for the video I just learn something about the PTO

Thanks for the video. I learned a lot. My Muncie Air actuated PTO on my bucket truck is stuck on or engaged all the time. Now because of this video I know what I am looking at under the truck as far as how the PTO is actuated and what actually does that.

Thank you for the explanation!

Very informative, appreciate you shay

Thank you so much!!

Nice. On my truck. I have the air valve one. But I only see 1 air line. On yours I see 2 airlines. I changed my flip switch that turns the light on. On mine, the pump stays on running... It doesn't matter what position the up or down lever is. If I pull the lever, it will go up. I ran out of ideas.

I had a inline filter on the system and couldn't get it to stop leaking, the bed would go up real fast, but when we aliminated the filter the bed wouldn't go up near as fast

I have a driver who insists on leaving his bed up every night and the Maxle lowered almost to the ground. Is that ok to do? If not why? Thank you. All your videos are great.

was a very good video. Im a new mechanic to this type of work. Maybe you can do more trouble shooting on the actual PTO for the next video. The trucks we have here are PTOs that dont use air. Im guessing they are using trans pressure to engage. ( they are all auto allison transmissions)

Excellent informative vid!

can add or do demo on truck the actual operation all the steps and do's/don't that you have discussed on this video. thanks

I just had this problem... when I lower box and then tried to raise box the small little piston gets stuck and won't let box raise i have to hit it with a hammer to get it loose then it will raise up

Gracias por la esplicacion👍🌞

Very informative video

Can you clock a pto or pump to not hit air tank. It seems mine is hitting to the point where i would need to remove air tank and remount or get new smaller tank

I'm trying to find pto for my Peter.Built 579 can't seem to locate one at all here in Florida.Need help

The main reason 1 out of 20 fail right away is they are mostly low quality China product. The only dump pump still made in the USA are Permco. Even Parker/Commercial are not made in youngstown anymore.

On Friday, i went to go dump a bed full of dirt. I drive a Peterbuilt. On the way up, not even a quarter up the way, i noticed my tarp was still down. Stopped the bed from going up to raise the tarp. Once i did that, the light on the control module for the bed that’s in between the 2 seats, the light went off. Now i can’t raise the tarp not the bed. What happened ? Any ideas? Feel free to call me plz

My bed not going up or down. I hear air coming out the exhaust side of the hose. I can just move the level valve from hold to up or down and it leaks air out.

how do you control the bucket lifting cylinders not to experience high pressure when offloading to eliminate hydraulic system pipe bursting?

I have a 1995 C60 Kodiak that has a Tulsa chain powered winch coming off the pto. I'm mounting an IMT HYDRAULIC crane on the bed that is hydraulic. What are my options for running both devices? Not necessarily at the same time it's just one is hydraulic, and one is chain driven.

I really think a schematic of the circuit would have clarified how this circuit works for people not familiar with this already. Can you add this. Just a simple sketch of pump/valves etc etc

I have a 1975 Chevy C-50 dump truck. The PTO has a shifter from floor, not a pull knob. I'd love to see any video on best wat to engage and use properly.

Where does the hydraulic line coming from trailer connects too oil tank or pump

I have automatic 2018 Dodge RAM 5500. When I press the PTO button, the truck idles up and PTO doesn’t turn on. No matter what RPMs get changed to in the PTO settings in the truck it still won’t turn on. PTO measures 12 volts and all fuses are good. Any ideas what might be causing PTO not to come on?

What if the bed raises and lowers without issue while sitting still but when trying to tailgate gravel the bed won’t raise as you drive forward?

Thanks for your video. It's hard to find a video the way you explain it. I live in Denver. Colorado. I bought a 1993 Peterbilt 379 dump truck a few months ago and fixing and replacing parts here and there. I need your advise about my pto and hydraulic pump. My pto is air controlled. No issues when I rise the bed, but when I try to lower it I need to move the pto knob almost til the other end for the bed to start lowering down, but my concern is that it slam and shake the whole cab. I know it's not right. Could you please tell me what' you think could be wrong? Thanks in advance.Renzo

Great video man quick question do you know how to raise the psi on the pump ?

Pto cover elect switch cover leaking changed gasket still leaking?

nice

good

Very nice video Question pls, can the PTO stuck the transmission while starting engine ?? I have problem with my transmission, I couldn’t run my engine. I have doubt that PTO is the responsible part of this blockages Pls advise thank you

My dump truck bed lowering way too fast when it's coming down how to adjust it

I have an older dump truck and my clutch got stuck downwards wont come back up could it be bad clutch or pump and pto ?

I have a six wheeler dump truck with an air operated PTO. the body goes down pretty fast at all times. Any advice of what might be the cause? possibly a restrict or or check valve that might be installed? If so, do you guys stock those kind of parts as well? Thanks!

I have a issue, when I'm lowering the end-dump, start losing hydraulic fluid for the tank lid. What could cause this?

What would cause a single stage cylinder

Hey, I have a 2020 kenworth t800 with an Alison transmission,Muncie pto. My pto is stuck the engaged position. I was wondering if you had any advice on the situation. I have already replace the solenoid.

How to bleed your system after installation of new pump.?

If you using a grain gate and you have to leave the bed in the air until you finish?

Just wondering why my air operation doesn’t stop the bed in neutral position, I always have to go just a touch past neutral to stop the bed from going up:::: anything would help,,, is there any adjustment for air adjustment

I just bought a 2001 international 4900 dt466e dump truck retired city street dept. plow truck has a allisson auto and they claim the pto is always engaged or no switches or levers to engage or disengage that doesn't sound good to me is there a way to change it or just add a switch or cable?

What will be the issue of when cylinder start bouncing at the last stage and hydraulic tank has enough hydraulic fluid. Also if i continue to accelerate to raise it all the way when I turn off the pump and lower the cylinder hydraulic fluid start leaking bubbling out of the hydraulic tank.

I have an 8200 International with 10 ft dump bed. I tried to tighten the safety cable you refer to in the video and it pulled out the cylinder when I raised the bed and didn't shut off the PTO. Why did it pull out the cylinder without shutting off the PTO?

What would make my bed start dumping when I just turn the pto on and won’t stop going up until I push the clutch in it won’t stop if I turn the pto off or put in in lower position just if I push the clutch in then I can lower the bed also air powered

We have a 2019 F750 with a Chelsea PTO and it's crazy loud when engaged. The noise goes away when the truck is revved up. I'm told this is "normal" but to me it sounds horrible. Any suggestions?

Pto lever not going to raise what could be the problem

Pls tell me the components of electrical system that activates the pto sytem of howo dumptruck..the pto of the truck is not engaging.pls help me..

Hi, please let me know how to fix the pto pump leak

I have a air operated pto and works fine except when I lower it with a load there’s no way to do it slow it just drops at full speed. Any suggestions would be greatly appreciated.

Why is there not a pressure relief valve to protect pump ? Does pump reverse direction for up down or is it the DCV attached to pump etc

Can you make a video on the pto blowing fuses?

Is there a filter on the hydraulic system itself? My dump bed has recently started to slow at times, and I’ve noticed hydraulic fluid leaking. One mechanic mentioned a possible clogged filter. But not sure where the filter is located

I got Question, I have a direct mount pump to the PTO as shown on this video, Now is there a universal Yoke joint that can work off the Pump Shaft Using a pto shaft ❓

Question, if the dump truck bed is coming down too fast while unloading, what could the issue be?

I have an old central axial pump on an old dot truck. I have not run it yet are those reliable because they rotate off the front engine.

When you shut pump off with the wire rope what actually happens. Does pump keep rotating and oil diverted back to tank ?

How does it work with a truck with dual or triple functions for the hydraulics like a hook lift truck? Is it just a pump with no valve built in and it runs into multiple valves like a tractor?

My pto won't disengage

Why do I hear a grinding sound when I lower my dump trailer?

I have and automatic transmission Eaton fuller will that Muncie fit and how much should I shim it?

I got a IHC roadranger trans. Single line for a Pratt dump chassis. Dump will go up but not down. Is the pressure release valve hard to replace?

I have an issue with my air controlled pump when the bed is fully raised. It stays up and doesn’t go down I have to engage the pto again and dump it for the bed to go down

Is there a high pressure relief valve in the systen?!

What type of hydraulic fluid do I use for my PTO? I have a 1998 Chevy C6500 rollback tow truck with a 6 spd manual tranny. I assume the large tank just between the frame rails is for that hydraulic fluid, yes?

pto wont engage when air swich is turned on it wants to engage but makes grinding noise help

How about the pto relay where to find it?

How do you make the pump go just a lil faster on a system with air lines not cable

awesome video. My air controlled PTO is sticking on. I have to go under the truck and hit the air control unit (with the airline going to it) with a hammer to get PTO to disengage. Any suggestions

my pto exhaust port leaks intermittently.... like 80% of the time. Anyone have an idea what may be the problem?

Why can't I get the air value to work just put a new one on

Our mechanic can't figure it out, he thinks it's the PTO ?

when pto wont turn off

What would cause the bed to go up while in the hold position. On a 3 line system with sleeve installed.

Hi, I have a international 1987 it’s a dump truck 7 speed I cannot find a PTO How can you help me please

Stuck with a load of black top lol.

What is a normal sound when u turn Pto on

What causes the tipping valve to lock and not go up or down fully ? Took the cable off and cannot push the lever to down position