BCM's HZJ73: Maintenance & Mods

[BCM]

BCM,

I have looked and looked in the online resources but cannot find torque specs for the t-case fill/drain plugs, transmission fill/drain plugs, front/rear diff fill/drain plugs, and engine oil drain plug. I have found fluid recs and volumes. I have a HZJ73 with manual transmission headed this way and want to refresh all fluids like you did right off the bat. Wondering if you happen to have these on hand.

Appreciate it in advance,

Sean

I believe I found them in a paper service manual. Might take some searching but they can probably be found here:

FAQ - Online Repair Manual Sources

forum.ih8mud.com

or post the question on the ’what did you do to your 70 series today’

 

[dosequisrex]

Started baselining

Replaced non-OEM radiator cap with new OEM; 16401-54750
Replaced air filter; 17801-68020
Changed oil (9.9qt 15w-40 Amsoil Diesel syn), filter (90915-30002), drain plug (90341-12012) and gasket (90430-12031)
Drain and fill of front diff (Amsoil 75w-90 2.8qt), fill plug (90341-18006), drain plug (90341-18040), and gaskets (12157-10010 x2)
Replaced reverse lights with LED bulbs from Odd Iron

Later this week, I'll get to the rear diff, trans, and x-case, as well as mounting the sweet cupholder from Odd Iron.

BCM - first.....we seem to live "close" to one another. Just thought that was neat, I grew up in Loudoun County a long time ago.

Anyways, when you did your diffs and trans, did you use AMSOIL Severe gear or the AMSOIL Manual Trans Gear Lube. They are both 75-90 and I've seen both used so I'm curious.

Thanks!

 

[BCM]

BCM - first.....we seem to live "close" to one another. Just thought that was neat, I grew up in Loudoun County a long time ago.

Anyways, when you did your diffs and trans, did you use AMSOIL Severe gear or the AMSOIL Manual Trans Gear Lube. They are both 75-90 and I've seen both used so I'm curious.

Thanks!

Small world. Just drove home through Loudoun (rt7)

I used the Severe Gear and have no complaints, albeit without many miles.
The supported spec (GL-4/GL-5) might be the difference between the two

 

[BCM]

Forgot about this thread for a bit.

Most recently completed a minor rehab of the DS door window; motor, regulator, runs, weatherstrip, etc. Also added a bit of sound deadening. Happy with the results. Window operates like new and the door feels markedly more solid

 

[dosequisrex]

Forgot about this thread for a bit.

Most recently completed a minor rehab of the DS door window; motor, regulator, runs, weatherstrip, etc. Also added a bit of sound deadening. Happy with the results. Window operates like new and the door feels markedly more solid

View attachment 3928852

View attachment 3928853

Oh wow that’s awesome! I’d love to do that to my doors, my lock/unlock switch doesn’t work. Did you get a guide for this? And where did you get the door plastic for it?

 

[BCM]

Oh wow that’s awesome! I’d love to do that to my doors, my lock/unlock switch doesn’t work. Did you get a guide for this? And where did you get the door plastic for it?

Never found a guide per se, but lots of info in other member’s build thread in the 70s section.
Parts sourced through Serra Toyota (during 25%off sale), partsouq, and amayama

Once I have some time I’ll try to update this thread with part numbers I used