Knuckle Rebuild - How hard is it actually?

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AussieHJCruza

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Location
New South Wales, Australia
Website
www.completecruisers.com.au
Hello again everyone,

I'm looking at a HJ47 for sale that has a lot of grease and goop coming down around the brake backing plate (I think that's what it's called - factory front discs) and onto the wheels and tyres.

A couple of questions:
1: How hard is it to rebuild the knuckles (I presume this is the problem) and do all the axle seals and all that. I'm not totally useless in the area of mechanical stuff but this will be the deepest i've gone into something like this before.
2: Would I be nuts not to do the wheel bearings and trunnion bearings while i'm at it?

Also, just wanting an opinion:
This cruiser is an 83 RHD hj47
2H
216,000 ks
H41
4.11s
factory a/c
etc etc
It has dual battery system (3 batteries total with one basically new), new exhaust, new clutch master cylinder, new starter motor, wheels and tyres with <2000 ks on them, o/head console with mp3/radio and speakers etc, bucket seats, comes with original bench and driver's seat, set of 5 split rims, one spare dash cluster, the original dash cluster and one fitted. Apparently there was a short in the back of the cluster when he was on a long drive and he stopped at a wreckers and got a couple of clusters and whacked one in. The original cluster is with the vehicle so I think the ks are genuine.

The problems I can see are:
the knuckles as mentioned earlier
rear main seal (I think) leak
leak from transfer above park brake
rust: surface rust all over chassis and diffs, tailshafts etc. scratch off with fingernail. Paint peeling off firewall near brake and clutch cylinders (medium-brown surface rust), same in drivers footwell and surface rust on floor. Rear cab seam shows similar rust.
Runs sweet as - starts on about 2 turns of the starter-motor, a puff of black and then a light haze for a couple of minutes after started. Pulls pretty well (quite energetic for a 2H) Tranny and x-fer feel fine (didn't try low range) but 4H works. The tray is a bit stuffed but seems quite solid.

my third question is: This will be my first car (I'm 17 and have been into cruisers since I rode in a cousin's hj47 about 8-9 years ago. I know a bit about the 40 series, hence looking at one. I want something reliable (Toyota), tough, a bit of fun and simple enough to work on. Do other members think I'm an idiot to be interested in this. He wants $5500 for it but I don't think its worth that much. How much should I offer him for it? (comes with new springs and shackles etc for $300 extra)
Thanks for your help!
 
not hard, just messy
 
Hi mate I did a rebuild on my hj47 ute about 4weeks ago it is not hard but you will need a lot of rags and probably a good workshop manual makes it so much easier

Sounds like he wants abit to much for it but the Landcruiser market these days is exspensive to buy into in aus

The hj47 sounds a lot like mine when I purchased it so if you want a vehicle that you want to build and work on mate go for it
 
I think I used three cans of grease (or was it 4?), two cartridges of grease in the grease gun to fill the housing through the access holes, and at least 2 full rolls of paper towels doing the knuckles on my 40. Since it was my first time, I spent quite a while figuring out how to best remove the tapered spacer/washers on each housing. If you do it, be sure to get the double-lipped axle seals from Marlin Crawler (or whoever is the best source).
 
Well, it's not rocket surgery. ;) If you are looking at this task for the first time it just takes a little mechanical aptitude and ability to follow the FSM or your favorite service guide. Here's a few tips for your first time out:

Keep the parts in the order they were assembled, especially bearings and races, and shims.

Be prepared to get greasy and have plenty rags and solvent on hand.

Use gaskets where they belong. Don't delete a gasket in favor of silicone or other sealers.

If you don't know when the trunion bearings were last replaced - replace them.

CHECK THE TRUNION BEARING PRE-LOAD.

If the wheel bearings look questionable, replace them. (I watched a buddies FJ40 seize a wheel bearing at 55mph. Not a pretty sight, but he kept it upright.:eek:)

A four-wheel drive vehicle is a pretty challenging endeavor for a first car. If you have the cash, time and the help of a friend or family member with some mechanical experience, go for it.

And last, have fun.
 
Is this a wise move?

I've got a couple of cousins with HJ47s, a bit of time and a regular (not that much, but regular) income. I've costed it all up and it seems that I can afford to run a cruiser (provided no major things go wrong). I just don't know if I'm taking on more than I can handle!
 
It seems to me the up front fixing of issues is usually the largest budget hit. Keep in mind you can spread things out. Like the knuckles aren't immediately critical nor the engine main seal, so you can spread costs out as needed.

Priorities are always steering(so trunions factor in) and brakes. Everything else is secondary and Cruisers are great at talking to you before something really goes bad.

Taking it on yourself is the best approach. You get to do things wrong and learn! Plus you have a great resource in this site to prevent mistakes. I generally account for doing things 3 times before I feel solid on any particular area. Reward is confidence in you and the truck. Just did a 3500 mile road trip on my HZ converted 62 and it had zero issues. That felt great.

Best of luck on the truck! I would offer 3 or 3500 and go from there. Always more trucks out there.

Get yourself Toyota factory shop manuals first thing. Gregory's aren't bad, just not as good as OEM. Cheers!
 
I have got all the shop manuals (PDF) or most of them...the engine manual is a 1985 version for the 2H, which will not have sleeves (If I remember correctly, so I will need to find another one!
What about setting the preload on the wheel and trunion bearings. Is that hard (Probably not a good place to stuff up)
 
Hey mate when I did my hj47 I put in the new shims that came in the rebuild kit and it was over 20 kg of preload and it should be like 5kg so I put the old shims back in and it was perfect on both sides beat thing to test is a fishing scale easy to do
 
Last edited:
Grrr

Well, I suppose the question's been solved nicely...She's been sold to someone else. I hope she doesn't become a boat towing rig (Sniff)
 
Yep, I agree. The right one will come up!
 

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