Fluid Replacement FJ40 1977 (1 Viewer)

[ptefj40]

Hi All,

I decided to do a fluid replacement whilst I have the transmission hump in the shop for repainting. This is the truck that I bought in pieces from NC.

I managed to get the fluid drain plug out on the transmission and the transfer case. The fill plug is completely gnarled on the transfer case BUT I got the breather nut off with a 27mm socket - phew!

In the process of draining the transmission, the old oil is white, milky and horrible. I've let both the transmission and transfer drain for 1/2 a day or so.

Couple of question and advice.

1. Can I fill up the transmission with new oil, or is there any other flushing of the system I ought to do before refilling with new gear oil?

2. Can I refill the Transfer Case with new gear oil via the breather hole at the top with the correct quantity? I found on the board that the TC without PTO takes 1.8 quarts.

3. Assume the only way to get the stripped fill hole nut on the TC is to weld a nut to it and heat/ice it?

Help appreciated!

Best, Phil.

 

[fj40cruisin]

I don't know about any flushing system but I think you should look into it. Having that color of oil would make me weary. As for the fill plug, I had the same issue. I couldn't get mine off because it was so stripped. I ended up buying a Knipex 8701250 10-in cobra pliers. This tool gets tighter the harder you turn. I think they are on Amazon for $30. It eventually came off and I replaced the plug. You can also try heating the plug. When I completely drained my tc it actually took over 2 quarts of oil. I filled it until oil started oozing out the fill plug then I screwed on the plug. Hope this helps.

 

[ptefj40]

Thanks!! I just ordered a set of the magic pliers! Be here Sunday!

Do you happen to know the size of the fill plugs? I think there was talk of them being replaced with Allen wrench style. Did you do that?

 

[subzali]

Just get a replacement plug from the dealer. Doesn’t have to be hex up high like that, the hex is for drain plugs that scrape on rocks typically. I would say just fill and go.

 

[GA Architect]

FWIW - I just replaced all the old drain & fill plugs with new 90341-18021 allen head magnetic plugs on both diffs, transmission and the transfer case. Along with the new allen head plugs, all steel units (diffs & tranny) get steel gaskets (12157-10010) and the aluinum T-case will get the auminum gaskets (90430-A0003).

 

[fj40cruisin]

I just got Toyota fill plugs from SOR. I believe they were 24mm socket.

 

[ptefj40]

Thanks guys, just went down to my local dealership and ordered the parts...easy! I also got the Yankee Toys discount rate. Each plug was 2.44 each and the crush washers just over a buck apiece!

 

[swelltimes]

Thanks guys, just went down to my local dealership and ordered the parts...easy! I also got the Yankee Toys discount rate. Each plug was 2.44 each and the crush washers just over a buck apiece!

Lots of folks in the greater Boston area who could help you out with wrenching and advice as you work through tasks on your truck - just post up on the YankeeToys section!

 

[sproggy]

Lots of folks in the greater Boston area who could help you out with wrenching and advice as you work through tasks on your truck - just post up on the YankeeToys section!

What's this YankeeToys section? Where is it?

 

[swelltimes]

What's this YankeeToys section? Where is it?

Yankee Toys is a group of Toyota nuts in New England: MA/NH- Yankee Toys

 

[sproggy]

Yankee Toys is a group of Toyota nuts in New England: MA/NH- Yankee Toys

I'll check it out. Thanks