"Back to Skoolie" Bus needs Injectors and HEUI PUMP. How to install a HEUI Kit. Part 1. 

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Just wanted to say thanks for getting me interested in heavy duty diesel repair, I recently started an apprenticeship program with Cummins and I have been loving every minute of it!

ole c7 you are a patient man at this point in your career. mind your biscuits and life is gravy

we have a special tool we use to remove c7-9 injectors its basically two long bolts that have allen heads in them(smaller than the injector bolts), two nuts that have some flat metal welded to the bottom of them that it folded upwards so you can hold it. The bolts go through the bolt holes on the injector and locate in the head. The nuts go beneath the injector mounts and you can easily unwind and pull out the injectors with a ratchet or allen key.

The two pin connector, IVA, Engine Compression Brake, Injector, Cat makes a splice harness. As I dislike cutting wires, I try first is to remove the plastic part of the connector. Most of the time I just break it off. I then inspect the terminals and usually you can respring them as they get flat. So I push it back up and make it tight. I take a old IVA solenoid and push it onto the terminal and verify the connection is snug. Once I know the harness is good, I take the Cat splice harness, take it apart. Throw the wires away and take the connector and install it over the factory harness. If you like the little seal, Cat does sell it separately.

Those screws are from a C11/13/15 IVA solenoids. They are the "shipping" screws 🙂

i always liked HEUI systems over traditional, its built in safety is if you have a base engine problem low oil pressure, or clogged filter or similar, a HEUI truck will shut down typically before your core is destroyed or major damage is done making what you have still salvageable or perfectly fine if its a small issue, vs normal common rail it will run without Oil usually. or low oil and destroy itself without much warning maybe a dash light, i like HEUI systems as well for the fact they're not as susceptible to poor fuel quality or even contaminated fuel as a common rail system yes you could break some injectors overtime, but you have only so many high pressure oil lines and injectors and the pressures of this system are far far lower than a high pressure fuel pump say a CP3 or CP4, and in most cases when a CP3 or CP4 pump fail all your downstream fuel componets are generally taken with it, with a HEUI system HPOP fails catastrophically which is unlikely since it gets plenty of lube it lives in engine oil, you endup with a system although has quirks once overcome i think far outlive common rail counterparts with less mind paid to fuel quality and just normal oil changes granted oil change intervals on HEUI engines should be MUCH lower than common rail but its a practice i think everyone should do instead of todays OTR trucks doing 25,000 miles plus on a single oil change seen guys doing 80,000 mile oil change intervals on new equipment.

At our shop, we have two allen head screws the same size as your injector hold down bolts and two L brackets with a nut attached to them. We essentially use the two bolts to thread down through those nuts in the L brackets and down into the cylinder head to pry up on the injector. And place the L brackets on top of the injector to evenly press the injector for installation. Hope this makes sense? Can send you a picture if you’re more interested.

Stiction is the term for the static friction that you need to overcome to get stuff moving. Its super important to have low stiction on high performance motorcycle forks.

Channels like yours are the reason I love youtube. Thank you for all this amazing content.

I have a puller for heui injectors and it works great . It only takes 3 seconds to pull out a injector.

3:54 MAGIC!...man this channel keeps on giving

I have spent lots of time working on C-7s on Blue Bird school buses.

Hey josh. Hello from isreal😁 In my experience with the c-7 i found that the best way to remove them is a peice of rope and a long pry bar. You tie the rope to a circle and then you "choke" the injactor. You slide the pry bar in the remaining rope, put one side on a high level peice of metal... hold the other side firmly and give it a good 'smack' up. (Like a c saw) It takes about 3 minutes to pull all six... Let me know what you think.. Thank you for your videos! You rock🤟

Use a small u-bolt through the intake side of the hold down bracket with the threads facing up. Bolt a metal plate across the u-bolt and pry up on the u-bolt pushing down on the rocker shaft.

For injector puller…. Have a small plate witb holes that matches top plate on the injector with a nut welded to it, small slide hammer threads into nut. If you’re replacing injectors completely it works good. Never had the balls to reuse

Love my skoolie with a 3126b been able to do all work on it myself thanks to you

The screws go to a VVA solenoid and were removed after install , thanks for the video !!

Ain't that the truth about 'quick' disconnects!!! LOL😂 so true, more of a pain that anything. WOW!!! That picture of that gear train made me want to cry!! HEUI's are awesome for their simplicity and are definitely reliable. The metal contamination was an unfortunate, but a failure that has happened for sure. From one tech to the next that loves turning wrenches on anything and everything, thank you for sharing! Always enjoy your videos man! 👍👍💪✌😀

I used the CAT tool when I worked for cat to remove the injectors. Its a little peice of all threaded rod with a nut that kinda jacks the injector out. But it strips the threads after a few sets of injectors. If I can find the part# on my MAC mini prybar I'll post it. I spent 6 years in the truck shop on c7 and 3126's

I’ve found if you rotate the injector, sneak a heel bar under the hold down and on top of the head bolt. They pry out fairly easy

Thank you 🙏 so much, need this for my bus 🚌

Love the sound bite from an episode of Farscape when Creighton is on a dying Leviathan. 😁

On a trip, bumped into one of your fans in west Memphis, Arkansas. Yep there is such a place. He said he watched you regularly and enjoyed your videos. Another Cat/Adept Ape fan!

It seems to me that a tool that incorporates a slide hammer with a fork would be good for the injectors. But lift up on the injector evenly should make it easier, because just lifting up on one side can cause more binding on the other side.

My own homemade tool for those particularly asshole-ish injectors: If they are trash to begin with I have a small pulley puller over the injector head, held the fingers loosely in place with a zip tie, with a small slide hammer welded to the other end of the puller. A bit butch but they always pop right out after the 2nd or 3rd pop of the slide hammer and nothing gets hurt. If the injector you're pulling doesn't have a whole lot of flange depth for the puller fingers to bite a hose clamp over the puller fingers works like a champ too

Had a buddy make a custom slide hammer attachment that worked pretty good on the injectors with enough head clearance. It completely ruined the old injector in the process but saved a lot of time

Stiction might be the word for that bound up friction ( which is measuring moving resistance)

I laughed the entire time u were trying to remove the injectors and saying they are the hardest to remove. That's exactly wat I say evertime I have to change c7 injectors.

Love your videos man.

I welded a slide hammer rod onto the adjustment screw for a vice grip. Obviously with the hammer on it beforehand. And I think if your able to clamp the vice grip on somewhere of the injector, you can get it out. But you need room above it.

As always..... great video. 👍

I do diesel parts warranty, in my system the 10r8899 pump is just labeled oil pump. Pretty cool to see that it's the HEUI pump. I see those fairly often

DOTW has definitely improved, may need some more flames or flying parts

Slide hammer with special homemade fitting on top injecter

the little bolts are from a 10R 7302 ACTUATOR SOLENOIDS KIT ON C-15

INTELLECTUAL Adept Ape My teacher Thank you very much for sharing it helpful information video. Take care and have a great Weekend INTELLECTUAL Adept Ape From Nick Ayivor from London England UK 🇬🇧 ⏰️ 20.16pm

VVA solenoids screws. Holds the solenoids together before install. Or those are the install screws as the are two sizes. Depending on serial number prefix.

Thanks for this video - very helpful. Did you make the install video part 2? Can't seem to find it.

I used to put a socket under the hold down and use my pry bar and they are not easy to remove either way those are a pain

You put out great content

hi try to use two pry bars to get the injectors out . one pry bar on each side . then you push the injector upwarts , insteadt of using one bar and push the injector to the side and not upwarts .

A question, wouldn't this be the time to add the Huey Pump filtration kit? Thanks for doing these videos. I own an RV with a C7 and have really enjoyed your videos and they have really made me much more comfortable working on this engine and helped with PM knowledge.

Thanks for sharing

Make a grab end (if necessary) for a slide hammer to pull those injectors.

I have used a small gear puller with bolts threaded though the injector hold down clamp on both sides and a slide hammer.

Small screws are shipping screws for IVA solenoids. Two per unit.

i do enjoy watching all of your videos, i would like to ask if you can do a video about HEUI pump vs Common rail please

I've been waiting 3 weeks now for the oil feed line for a Marine C7.. not sure why it's special but it was coming from Japan.

We have bad parts problem also, waiting for a DPF sensor set for 4 weeks (C7S) Yes, I still have 5 .

Hi i am pleasantly surprised to see Americans wearing coveralls They usually wear their beachware to work or even to school for that matter

Strap and a bar works

on the injector extraction, i am assuming the hold down bracket is the safest location for applying force. If you made an adaptor for a slide hammer to go through that backet. that could possibly speed things up. and insure a good removal angle.

You said "front butt" right at 12:29 🤣🤣🤣🤣

Caterpillar part#367-3070 - C7 / C9 injector removal install tool - best tool for inject removal

Internet troll answer to your question of "what do these screws go to" = YOUR MOM :) - great channel keep the vids coming.

I was definitely taught to pull fail plugs first and Evac all the huei oil first before pulling injectors. And as for pulling the injectors I use a heel bar with the base pushing off from whichever head bolt is closest and or a socket underneath. I also dip the inj and orings in 15-40 first.

All my Thomas C2’s in my district all have Cummins 6.7 ISB engines. Kind of sad not even a single one of them use the C7😢😢😢

The tiny screws to the IVA solenoids on a C15 acert

You could probably make a slide hammer attachment for pulling those injectors

I save one screw, and when I remove a solenoid, I place one in it. So when it comes off it is assembled and not risk dropping the darn thing into a engine and falling apart.

Ha josh those 4 little screws look like there from the round cap on top of an injector🤷‍♂️ love ya vids, there hairs fine as winter is on its way and you may need the extra thatch to keep warm😂👍

Slide hammer pulls them out easily. Just have to be careful you don't drop the little nut into the head.

Screws in the pan are for the top of the injector,

You can change a injector on c7 in 20 minutes I use a heel bar very easy the hardest part is getting the valve cover off

That's what I was thinking before I hit the like button.. 😂😂

Awww man good ole c7 I hate this engine bc when I see it it’s in a f750 and usually a c7s so it’s always regen and ard head or the fuel line filters or the fuel enable valve or the pilot valve or pilot pressure sensor which I just did on a truck being that I’m the new guy and apprentice anytime a c7 comes around I get it bc no one else wants it TnT

What about making an adapter that would screw into the top of the injector connected to a slide hammer. That would seem easier to pull the injectors, especially if you work on those engines all the time like you do.

top of the injector

Joshua those infact are IVA solenoid screws.

Tiny screws are for vva solenoids on a c15 accert

3:19 *laughs in ISO 16028 hydraulic quick connects*

Looks like the screws for the intake valve actuator

Hey thanks I really enjoyed watching your video over the past couple years but I’m also wondering could you do a video on the caterpillar 1693 injectors and turbo

The correct tooling is in D & A.

I have a pair of injector removal pry bars that I think were intended for Detroit injectors. I wonder if they would work for popping those injectors out. I don't remember when or where I got them. I think they are snap-on.

Those look to be the screws that holds the Cat brake solenoid to the Cat brake.

The solenoid that mounts on top of the fuel injectors

actuator screws

If the injectors are in the cylinder would cranking the engine over with them unplugged and hold downs loose help? Ford designed spark plug automatic change intervals and put a safety hood just in case.

Intake actuator screws when there new need to remove when installed

Could you loosen the 2 injector bolts a couple of turns, disconnect the injector wiring loom and turn the starter key to turn the engine a few revolutions? Maybe try it off camera in case it goes wrong.

intake actuator I know there on the C13's and C15's

IVA/VVA solenoid shipping screws

VVA on c-13 is what those little screws appear to go to

Iva solenoid small bolts

Those look like the screws for the IVAs on an ACERT.

Screws are from injector solenoids of a c7 or c9

Iva/vva bolts

Those small screws look like the screws I removed from the Iva solenoids on a c13 that keep them together and falling apart during shipping

Another Good video. I have a completed skoolie with a 2004 C7. Any suggestions for after the winter being parked for 4 months spring start up ?

I hate that oil feed line. Had one I could not get off and had to cut the fitting and replace the whole line

pull those injectors with the overhead crane.🤔 lol

8:55 if your replacing those injectors, then why not take a set of channel locks to rotate the injectors, at the same time pull them? Could probably get them out easier with 2 channel locks instead of using a grim reaper toy.

screws from vva actuator.

Sheesh... I thought you were making a Led Zeppelin reference.

What would cause extended cranking b4 it starts ? Sometimes it fires right up other times its crank crank and crank only when its sat over night. Once warmed up it starts right up.

Now I'm replacing my o-rings on my and as far as the placement of the o-rings. The kit came with 1 o-ring that is green. And you can see in your video that that o-ring goes at the top of the injector next to the square o-ring and I'm wondering is that correct?

Dude. Might be time to trim that mane. Wouldn’t want it to get caught up in an accessory or drive belt-that would not make for good content. Oh yeah, great video as usual too.

Why not use a bearing puller slide hammer on the injectors