Electrical Work - Personal and on a Jeep

With the cold weather, and well, life, my progress on the m38 has slowed a bit. I was due for an ICD (Implanted Cardioverter Defibrillator) replacement which was going to put me on light duty for a few weeks while I healed up, so my wife kicked me to the garage (my happy place). 

I took the time to tackle the remaining wiring and mounting for my GM alternator conversion. I built the brackets earlier (Read about that here). I was never satisfied with the upper mount, so I had to come up with a better and more solid solution. A convenient piece of tube and a switch from threaded rod with nuts to a bolt really changed it for the better. 

 

 For the wiring, rather than a dash light, I wired a diode inline to excite the alternator when the ignition coil is engaged. The diode will prevent feedback when I shut it off. A short universal battery cable from Princess Auto completed the wiring to the positive on the battery. Don't be like me, remember it goes to the Batt terminal, not the ground bolt on the alternator (Yeah, that was fun)

 

All my cables are routed and neatly bundled with fabric wiring harness tape. I decided to try it out after a segment in a video from Sarah-n-Tuned. Seems like it may hold up better than electric tape under the hood. 

 

Trackick Build List

I'm currently working through Brennan's Garage excellent Trackick brake conversion on the m38. The kit from Brennan is a set of brackets (two sets in my case - 4 wheel disk) that allows mounting of Geo Tracker (and the like) calipers and disks. A complete part list from RockAuto (and Amazon) is provided at the end of this article.

 

The first step is ridding the axles of the drums, hardware, and backing plates. I took the opportunity to inspect, replace, and lube all my bearings. The Trackick braket bolts to the axle using the same bolts that held the drum backing plates on (and mounts the spindles on the front).

Once the brackets are mounted and hardware is torqued to spec, the disks slide on. In my case, I did have to open up the lug holes to match my new studs. Your mileage may vary, just be aware that making parts from different vehicles fit isn't always an exact science. After the disks, it time to mount the calipers. Brennan includes mounting bolts and spacers to line everything up accordingly.

The flex hoses are Chevy S10 lines. The front's will reach the stock hard lines, while the rears will require some moddification to the hard lines to make space and accomodate the flex lines.

RockAuto parts list - full disclosure, I found the calipers local for a little cheaper in Canadian dollars
2 x DYNAMIC FRICTION 33147009
2 x DYNAMIC FRICTION 33147008
2 x CENTRIC 90848009 OE Grade
4 x DORMAN H380280

Some M10x1.0mm banjo bolts from Amazon
I went all new, but remanufactured is also an option.

For reference, I used these as vehicles:
1994 Geo Tracker for disks, calipers, and pads.
1998 Chevy s10 for flex lines.

Not putting the brakes on...yet

I mean, I'm working towards putting the brakes on, however there are building blocks to get there. 

I spent the Canada Day long weekend working on the m38. I replaced all the wheel studs (well, all except the one that I was shorted), rebuilt the front hubs with fresh bearings, and ran the new brake lines along the axles.

Next up on the list is the new master cylinder and the front and rear brake lines.

 

The order is in with the remainder of the parts needed. Calipers, pads, rotors, etc. shortly after those are in my grubby little hands the Jeep is going to have brakes. 

To be clear this will mean it has a running engine and [will have] working brakes. My driveway is about 50' long, and I sense I may be taking my first 100' road trip before the end of summer. 

 

Front axle lines installed, the kit from Omix-Ada is a pretty accurate fit

The back lines are much like the front. We'll call it a solid "good enough for this guy" fit.

The new Master Cylider is on the bench, waiting.

 

Still here. Still puttering along.

 Evidently it's been a while since I've fired up an update. 

Life and winter, but mostly winter, really cut into my garage time. I wasn't in the mood to work on damp days in the garage.

Being said, I'm back at it now that the weather is improving. So here's a quick update on where things sit. 

The TJ blew it's last hardline, and I had to deal with that. So it's now has a full set of all hardlines all around. I don't particularly like doing brake lines, but I'm oddly pretty good at it. Being said, my ancient flare tool has seen its last flare, and I was forced (buying tools, forced, HA!) to buy a new flaring tool. It's spectacular. SO much nicer than my old one.

Fortunately I also have a bleeder tool, and that just makes swapping the lines out easy enough. 

 

 

I also finally got an oil change in. Having not done one since before the pandemic, the lack of driving has resulted in a 4 year lull where I've only managed a hair under 5000kms/3100mi in that time. Still under what the Royal Purple is rated for, but time is no friend to sitting oil. 

 

 

I've also been making may way through the four corners on the m38 to convert it to disc brakes. Repacking berrings as I go, and taking note of what needs replacement. I am hoping to have an order in for the remainder of the parts this month, and have brakes on in July.

The TJ is due for a new tailpipe and some body work. Probably more than I should be trusted with, but I am a jack of all trades and a master of none. 

In any case, there's where it stands, and welcome back to anyone who pops on to read along. 

Gas Tank Skid Plate (aka Hopes and Prayers) Replacement.

Rust Never Sleeps, right? 

In the on-going saga of dealing with rust on a 24 year old Jeep, this project was dealing with a gas tank skid plate that had rust, no, rotted out completely. I have dubbed the skid plate "Hopes and Prayers", mostly because all that was holding my gas tank in the Jeep was hopes and prayers.
If you're reading this, you may be well aware that Jeep TJ gas tanks are all held in place by the very skid plate designed to protect them. Meaning that if the skid plate fails, the  tank falls out. I had noticed a crack in my plate last year, but it was minor and not something I was too concerned about at the time. Fast forward to a couple weeks ago. I was sitting on the lawn waiting for my sons bus to arrive, and I see this under the Jeep. A quick Amazon search and I had a "Amazon Warehouse Deal" (aka - small scratch on it) skid plate and strap kit on my driveway. 

I became a bus rider to work for a few days while waiting for the weekend a some nice weather to tackle the "one hour job". Well, it took six, but you know how these things go. 

To start, up on jack stands the Jeep went - note to self and anyone reading, get taller jack stands. Both rear tires came off, and then the fuel filler cup to free the filler from the body. 

 

 

 

From the drivers side, you should be able to reach in and disconnect the fuel line, vent line, and electrical connections. I was lucky enough that the rust hadn't destroyed the lines, and I was  able to get everything apart relatively easy. For a great tutorial video I highly recommend this video from Taboo Customs on YouTube.

To start you will need to support the skid plate and tank using a jack of some sort. I built a quick jack adapter out of plywood and some two by fours. I had to create a flat surface to carry the weight. It should go without saying don't be like me and do this with a nearly full tank.

The Jeep TJ has seven bolts holding the skid plate on the Jeep. Three in front  over the track bar (rest assured they can be reached with a ratchet and long extension) and four in the back. The confusing part in the back is that there are six bolts. Two of those hold the tank straps in place, they're the longer ones, usually with rubber covers on them. The bolts coming down from the Jeep are carriage bolts, and should be captured by the mounting frame. I had to cut two off ultimately, but they were easily replaced with new hardware from the local hardware store. 

Now onto the "Hopes and Prayers". Once I had the tank sitting on the driveway, and had freed it from the straps (had to cut them off) I discovered just how bad the skid plate was. Basically the tank was being held up off the road by two flaps of rust. A solid bump may have dropped the tank out. 

 

Given my incredible intelligence (ha) I was stuck with a nearly full tank (about 45L/12gallons, or 73lbs of gas - give or take). I had to lighten that load or there was no way I was going to be able to manhandle it back into place under the Jeep. Fortunately I have a couple spare fuel pumps, and no fear of death (ha), so I "wired" up a pump with one of those lithium ion jumper boxes (you should get one they're handy). I ended up pumping the gas out into whatever spare gas cans I had to make putting the tank back as easy as possible.

Speaking of manhandling. Even empty it was a battle to get the tank and skid back in place. The new skid plate is thicker and has more protection than the stock one, so that added some weight. Not having taller jack stands made working under the Jeep with the tank and jack that much more difficult. I managed and now have a tank in place with a new skid that will last MANY years. If I ever have to drop the tank again, I'm just taking it to a shop.

Six weeks to install an alternator, seems reasonable

Way back in the early days of Spring (or is it late days of Winter?) I started to build a bracket to convert the m38 from a generator to an alternator. All was moving along quiet well with the lower adapter for the alternator, and I was ready to attach the upper bracket. This involved removing one water pump bolt to remove the old bracket, and replace it with the new one. 

And that's when things went south. The bolt broke off flush with the water pump. So now I had to move to remove the water pump. I drained out what was left of the coolant and and went to remove the other three bolts.... and broke another. Two did come out, so there's that. When I tried to get an extractor on the broken bolts, one did come out it was the other one that decided to break again flush with the block. 

Queue ordering reverse drill bits and a new water pump gasket. This lead to removing the grill and radiator from the Jeep. Fortunately, these old military rigs were built to be field serviced, and that only took about 20 minutes.

I centre punched the broken bolt and started with the smallest bit I had, slowly working up to 1/4". Once there, the remains were still firmly embedded in the threads. I managed to use a small punch to pull up an edge. With that done I moved up to regular bits (1/4" reverse was my largest) and managed to get the remains to release. Once that was done I was able to run a tap through. 

 

During reassembly I took the opportunity to finalize the alternator with the radiator out of the way, and while I did require a spacer to get it set, things went pretty smooth. I do need to add a 90 degree fitting to the bottom of my oil filter housing, and probably need a shorter belt. However, I can now finish off wiring for the charging system and continue on this marathon.

Electrical and Fuel (and I'm still alive)

First off... I'm still alive. It's been a bit, and while I've been working on the Willys, I also have been dealing with life and dealing with said life. It's all good. 

Once I got the Go Devil, er, going, I started work on making it permanent. Since the mechanical fuel pump was a bit of a no go, I made the call to move to an electric pump. I sourced out a low pressure pump and got to work pluming and wiring it in. 

I've also mounted up a proper universal fuse panel in the second battery bay on the cowl, and started into wiring the Jeep to keep it safe and modernized, at least under the hood. From 10' away, it's still going to look like a '52 m38. 

I made a decision early on that the wiring was going to be modern(ish) and ordered in weather pak like connectors. I want to make sure everything can be removed for service, and replacement, as well, should it ever come to it, return to stock. 

With the dash wired, I mounted it (temporarily) for testing, and so I can continue to plug away. 

Right now I have an alternator on order, I'll need to make up some brackets for that. I also have wiring in hand to start wiring the lights. Aside from that, there's a laundry list of things still to do ... brakes, tires, steering, wheel bearings, cooling system, windshield, seats cushions, and so on and so on. I figure if I can get the alternator and cooling buttoned up, plus the parking brake at least, I should be able to "drive" it up and down my driveway to make working on it, and in the garage, a little easier.