Missing bolts

Tennessee80 · 07-05-08, 10:25 AM

Hey all,

I have 2 bolts missing (have been tightening them recently and now they are gone) under the front axle assembly, on the bottom. there are supposed to be 4, and they hold on the steering arms (dont know the exact word for them...) Can I replace them from a parts store with a similar size bolt? The 2 remaining are tight, so I suppose I can drive short distances. Any help would be appreciated...

Cheers,

Joel

turbocruiser · 07-05-08, 10:30 AM

Dude, this is very very very dangerous. I really recommend that you don't drive your rig until this is fixed. To answer your question I would order 8 new studs and 8 new nuts from cruiserdan. There is no recommended torque in the FSM for how tight the studs are in the knuckle. I used 35 ftlbs with some high strength loctite on the threads for an added measure of safety. The knuckle is cast so I thought that 35 ftlbs was about as high as I should go. Again, please don't drive your rig till these are fixed.

Beowulf · 07-05-08, 10:36 AM

Quote:

Originally Posted by Tennessee80

Can I replace them from a parts store with a similar size bolt?

Joel,
Sean gave you the correct advice. I will emphasize that these are special studs and hardened nuts. You will also need the cone washers. Do not attempt to use anything but genuine Toyota parts. Get a 10mm (IIRC) female torx socket to install the new studs. You can also use the double-nut method if the torx socket is an issue for you.

Based on your sig line it is obvious that you wheel your junk. Get in the habit of checking these knuckle studs before and after every trail. The last thing you want is for one of those to let loose at 70mph on the trip home. Big tyres and bouncing around in the rocks is hard on the knuckle studs. As you noticed, tightening only the nut is not adequate. You must be sure the stud itself is secure in the knuckle housing; then torque the nut (76 ft/lbs IIRC... check your FSM to be sure)

-B-

tblume · 07-05-08, 10:41 AM

X3

98 SNAKE EATER · 07-05-08, 11:05 AM

whoa

Tennessee80 · 07-05-08, 12:23 PM

Thanks for the quick response, guys! I just sent C-Dan a PM on the subject, and I might should call his work for an order. I need the parts soon, as I DD my rig for work during the week. Cheers, and have a great weekend!

Joel

Beowulf · 07-05-08, 01:30 PM

If you need it for Monday morning then call your local dealer.
-B-

sseaman · 07-05-08, 09:07 PM

Quote:

Originally Posted by Beowulf

If you need it for Monday morning then call your local dealer.
-B-

Good luck in Nashville finding 80s parts

Proven · 07-17-08, 07:24 PM

So...I came to this from the other thread since B linked it.

Is there a way to check these? can I just go at them with a torque wrengh to make sure they are tight enough, etc? Surely this isn't just "wait and see what happens..."

Beowulf · 07-17-08, 08:15 PM

Double nut the studs and torque them to ~50 ft/lbs, then torque the fastener to ~70 ft/lbs. If you have the new style knuckle studs you can use a female torx.

-B-

IdahoDoug · 07-17-08, 10:44 PM

I routinely check mine when I change the oil and before any long trip. You're already laying under there to loosen the oil pan drain, so take a wrench with you and give each bolt a tug. If you wheel, I'd check before and after each trip. It's an issue to be aware of.

DougM

turbocruiser · 07-23-08, 01:58 PM

Quote:

Originally Posted by Beowulf

Double nut the studs and torque them to ~50 ft/lbs, then torque the fastener to ~70 ft/lbs. If you have the new style knuckle studs you can use a female torx.

-B-

B, not to argue at all with you, and again as far as I know there isn't any advertised spec in the FSM but I think that 50 ft/lbs is awfully high for a cast part like this. I used 35 w/ loctite over 15K ago and have had no troubles. Again, not as an argument.

cruiserdan · 07-23-08, 02:17 PM

The "Standard Bolt Torque Specifications" chart in the manual lists class "4T" and class "6T" studs. The class 6T studs are grooved at the top and it's difficult to tell if the 90126-12005 is marked in that manner.

In any event that chart shows the torque for a 12mm 4T stud to be 35 lb-ft and a 6T to be 53 lb-ft.
Based on the nut torque value of 71 lb-ft I would think that the stud was a 6T but that is only speculation.

07-05-08, 10:25 AM	#1
Tennessee80 IH8MUD Junior Join Date: May 2007 Location: Nashville Posts: 162	Missing bolts Hey all, I have 2 bolts missing (have been tightening them recently and now they are gone) under the front axle assembly, on the bottom. there are supposed to be 4, and they hold on the steering arms (dont know the exact word for them...) Can I replace them from a parts store with a similar size bolt? The 2 remaining are tight, so I suppose I can drive short distances. Any help would be appreciated... Cheers, Joel __________________ 1994 fzj80 "sandy": J springs, 315 procomp xtreme m/t, shortbus, local sliders... 1998 Uzj100-stock TLCA #17633

07-05-08, 10:30 AM	#2
turbocruiser IH8MUD Lifer Join Date: Dec 2003 Posts: 3,083	Dude, this is very very very dangerous. I really recommend that you don't drive your rig until this is fixed. To answer your question I would order 8 new studs and 8 new nuts from cruiserdan. There is no recommended torque in the FSM for how tight the studs are in the knuckle. I used 35 ftlbs with some high strength loctite on the threads for an added measure of safety. The knuckle is cast so I thought that 35 ftlbs was about as high as I should go. Again, please don't drive your rig till these are fixed. __________________ 97 FZJ80, Locked & Loaded, Safari Turbo, Safari Intercooler, LandTank MAF, 3" Ceramic Coated Custom Exhaust, Ron Davis Racing Radiator, OME HD 2.5" Suspension, DBA Slotted Rotors, New Toyota Calipers All Around, Toyota Pads, 33" Revos, ARB Front Bumper, Center Diff Switch, Slee Stuff: Roof Rack, Step Sliders, Skid Plates, SS Brake Lines, DC Drive Shaft. HG PM'd, 8.5psi and climbing, My Rocky Mountain Mojo Mobile!

07-05-08, 10:41 AM	#4
tblume IH8MUD Regular Join Date: May 2008 Location: Roseburg OR Posts: 306	X3 __________________ '93 FJ80; stock, locked, 7PIN, CDL button, 255/85 BFG MT's TLCA# 19103 '71 FJ55- donated mid V8 swap to a 4x4 shop to move '78 FJ40- rust bucket, parted to the '55 '84 FJ60- sold to buy Heep Liberty CRD. dumb@$$ http://forum.ih8mud.com/ca-jefferson-state-cruisers/

07-05-08, 11:05 AM	#5
98 SNAKE EATER IH8MUD Lifer Join Date: Aug 2004 Location: Queens, NYC and sometimes Orlando, FL Posts: 1,152	whoa __________________ 98 Aztek T/A WS7 (FOR SALE!!) 70 Ram Air IV T/A 97 FZJ80 Locked 00 Lifted G16E GhettoChopper 07 Ghetto Quad (FOR SALE!!)

07-05-08, 12:23 PM	#6
Tennessee80 IH8MUD Junior Join Date: May 2007 Location: Nashville Posts: 162	Thanks for the quick response, guys! I just sent C-Dan a PM on the subject, and I might should call his work for an order. I need the parts soon, as I DD my rig for work during the week. Cheers, and have a great weekend! Joel __________________ 1994 fzj80 "sandy": J springs, 315 procomp xtreme m/t, shortbus, local sliders... 1998 Uzj100-stock TLCA #17633

07-05-08, 01:30 PM	#7
Beowulf The quick brown fox ..... Join Date: Mar 2003 Location: Somewhere in the foothills... Posts: 10,565	If you need it for Monday morning then call your local dealer. -B- __________________ 97 FZJ80 - Wing Nut MAF, locked, 315 Toyos, 4.88s, Slee 4", George's sliders, Slee bumpers, M12000, OBA, Outback drawers + other stuff. Transformation in progress... Sometimes you find yourself in the middle of nowhere. And sometimes in the middle of nowhere, you find yourself.

07-17-08, 07:24 PM	#9
Proven IH8MUD Regular Join Date: Apr 2006 Location: Atlanta Posts: 210	So...I came to this from the other thread since B linked it. Is there a way to check these? can I just go at them with a torque wrengh to make sure they are tight enough, etc? Surely this isn't just "wait and see what happens..." __________________ 1996FZJ80Rescued from Suburbia 4/28/06. Soon to be reintroduced to it's natural habitat.... Fully inspected and PM'd - Slee SS brake lines - Brass Radiator - Dash lights replaced - ALL hoses bulletproofed.

07-17-08, 08:15 PM	#10
Beowulf The quick brown fox ..... Join Date: Mar 2003 Location: Somewhere in the foothills... Posts: 10,565	Double nut the studs and torque them to ~50 ft/lbs, then torque the fastener to ~70 ft/lbs. If you have the new style knuckle studs you can use a female torx. -B- __________________ 97 FZJ80 - Wing Nut MAF, locked, 315 Toyos, 4.88s, Slee 4", George's sliders, Slee bumpers, M12000, OBA, Outback drawers + other stuff. Transformation in progress... Sometimes you find yourself in the middle of nowhere. And sometimes in the middle of nowhere, you find yourself.

07-17-08, 10:44 PM	#11
IdahoDoug IH8MUD Lifer Join Date: Aug 2003 Posts: 6,540	I routinely check mine when I change the oil and before any long trip. You're already laying under there to loosen the oil pan drain, so take a wrench with you and give each bolt a tug. If you wheel, I'd check before and after each trip. It's an issue to be aware of. DougM __________________ Buy Head Gasket DVD for you OR for your mechanic HERE '93 FZJ since new, 2.2kw starter, Revo 275s, locked, big Hellas, rr fog, rr flood, rr Airlift, synthetics, ARB bullbar. 97 FZJ - exact same stuff but Michelin Alpins in winter "Slicker than owl shit on a wet log." - Carter

07-23-08, 02:17 PM	#13
cruiserdan Parts Shaman (per Romer) Join Date: Mar 2003 Location: Where's my glasses? TLCA# 11332 Posts: 14,051	The "Standard Bolt Torque Specifications" chart in the manual lists class "4T" and class "6T" studs. The class 6T studs are grooved at the top and it's difficult to tell if the 90126-12005 is marked in that manner. In any event that chart shows the torque for a 12mm 4T stud to be 35 lb-ft and a 6T to be 53 lb-ft. Based on the nut torque value of 71 lb-ft I would think that the stud was a 6T but that is only speculation. __________________ Original owner 93 FZJ80,locked,blown,water/methanol injected(like a WWII fighter aircraft),lifted,winched,snorkeled,slidered,Sleeed ,moneypit. Balanced on a pin head. 95 FZJ80 trail truck (hers), 94 FZJ80 320K with a knock and a lumpy old Dodge car.

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