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Thank you. I have a hard time knowing what comes with a group and what bits I need to save or order—

Right. You have to pull the knobs. The three are screwed on to the pull rods. You may need a pair of pliers to hold the rods from turning. The fan control just pulls off and slides back on—

And a new solenoid. Also, keep the gear, washer bolt; and small hex bolt on the side off the core?

We just pulled our HEUI pump yesterday and I had to pull the fuel pump cover to get her out in two pieces. I just noticed today that your photos show the same cover off of your removed HEUI pump. Did you 'have' to remove that cover on the way out and what about on way back in?

The bolts that hold the cabin heater in place are accessed from outside. Remove the grill and you'll see them above the radiator on the cabin floor. To remove the cabin heater you have to dismount the parking brake manifold and knobs, and disconnect the water lines, too. Power runs from the...

We just pulled our HUEI pump today. What a tetris game to get it out of that space. I finally pulled the cover from the fuel pump where the fuel lines attach and took her out in pieces. I see you removed more of the wiring than I did. Like separating the block connection to the injectors and...

I have been wondering how a 7JZ to another 7JZ could be a 3126 to a C7. Putting his serial numbers 7JZ00594 and 7JZ06815 in CAT SIS finds a 3126, not a C7—

I am confused did you mean to say, "I will be running new wires from the PPD so i..." Polarity Protection Device or Power Distribution Panel (PDP)?

There are PDF's of FMTV TM's in the Technical Manuals forum. I recall submitting Schematics for FMTVA1 for certain serial numbers. Perhaps that will help; I zoom in to enable reading and following routes. You likely will find other helpful TM's and parts lists there, too—

Page 2 lists many important things and what page and line they appear upon—

229A, 229B, and 3000 appear near the EMI filter. 229A & B going to the ECM (P188-67 & P188-65), 3000 looks like it is related to the warm up and exhaust brake switch through L11 (engine exhaust brake solenoid)—

Looking for specifications for lift pump pressure found this Adept Ape youtube At 7:00 minutes he mentions the pressure expected on the 3126: 55# perhaps 70 to 80#

It's not an adventure until something goes wrong— Yvon Chouinard

Is this the list with your o-rings?

Tractor Supply typically has a good selection of grade 8 bolts and nuts—

So, if I understand: 1— move water fuel separator filter to the tank— easily viewed at every fuel fill and walk about; 2— bypass mechanical lift (60 psi) pump at HEUI pump with electric 60 psi pump between water separator and primary filters. Essentially removing one pump and repacing geared...

I haven't owned a piece of CAT equipment in the last 30 years, but even those simply needed the injectors cracked while cranking. Pumping a primer pump is a new experience for me on a diesel engine on the M1078A1. The last time I pumped to prime fuel was on an outboard motor. Adding an...

Looking at CAT SIS2.0 It looks like the pump group includes transfer pump and solenoid, reman for about 15% less than new. Also, the reman is on the shelf at our local CAT Truck location, new would be order (1-2 days)— 134-0467

On the 2003 3126b M1078A1 the tee is rear of the primary just under the structure carrying the rear cab lock—

We lost our primer pump recently and now that we have it all back together it looks like the HUEI is gone. Only 283# at crank. Fortunately we are home now. I was thinking about trying the solenoid, though with the potential for losing $1,000 injectors I am thinking whole manufactured if we...