torque value - valve adjustment lock nut? (1 Viewer)

[Randy88FJ62]

A friend of mine is looking to adjust his valves and does not have the torque value for the lock nut. Anyone have this off the top of their head? He said that once he is done adjusting the valves that the lock nut that holds the adjustment in place is the one he is looking for. I hope this makes sense.

BTW, this is for his 92 FJ80 which I assume is the same motor and specs as our 88 FJ62's?

-Randy

 

[RockDoc]

I've just done them by feel. Often times there is some back and forth with tightening and loosening the nut to make sure you don't tighten down the clearance as you lock it in place. You need to be able to hold the stud with a screwdriver while you tighten the nut, so unless you have an open end torque wrench...

 

[KLF]

I don't think there is a torque value. Make 'em tight.

 

[augirthedude]

..... I use a long box end wrench when doing rocker arm / valve clearence adjustments to tighten the jam nut and try to hold the slotted adjustment screw with a screw driver and measure at the same time. three hands here would be a true asset. Make em' (the jam nut) reasonably tight and then check the clearance again after you tighten the jam nut. chances are you will have to loosen the jam nut and re adjust the clearence. It takes a little bit of practice to get it right the first time.

 

[RockDoc]

.PS you said the vehicle was a 1992 FJ -80 . If so this is in the wrong forum thread. The 60 series has the "2F" and the 3FE " engines and are a pushrod engine with rocker arms. The FZJ -80 has the FZ engine which is an dual overhead cam engine according to my information. valve adjustments on this type of engine requires a variety of shims or "pucks " to place under the cam follower to adjust. see the FSM for this vehicle .

The 91 and 92 have the 3FE, the 1FZFE came in 93.

 

[Dynosoar]

Just nice and tight I have never torqued them or have ever seen a spec for them.

Dynosoar

 

[Roastchestnuts]

I have been looking everywhere to find the size of the lock out nut for the valve job. I would like to know to have a wrench handy and ready to go when I start the valve lash job this weekend. is it a 10mm, 12mm, or 14mm?

 

[g-man]

I believe on my 87 fj60 it was 12 or 13mm. If you are going to work on it get a set of mm wrenches 10-14 will be fine. but they are usually sold as a set from 10-17mm. It may be easier if you use the boxed end. don't worry about a torque spec just snug them up. This is a 3 handed job, one hand on the wrench, one on the screwdriver and one with a feeler gauge. Its a little bit of a juggling act with you constantly setting the screwdriver down temporarily or the feeler gauge. A boxed end on the nut will help you to leave the wrench sitting in place if you need to.

Here's my write up on the adjustment: How to adjust your 2f valve clearance

Also interestingly the 80 2f engine fsm shows the rocker support nuts (top picture) to be 8 and 10mm but mine (a later 2f) was 12 and 13mm as I recall.

 

[g-man]

I did mine with the engine off but putting the tdc line on the flywheel on tdc with #1 piston up and then the others with the tdc line again rotated around so the #6 piston was up and doing the rest (see the yellow and pink colored chart in my referenced post) I don't know how you can do it with the motor running and dinging up your feeler gauge and trying to turn and tighten the nuts and screwdriver with everything going up an down.

 

[2mbb]

I have a set of "step" feeler gauges. The tip is one setting, then it steps up (gets thicker a little farther in. You select the gauge so the thin part is within the gap specification and the thick part is outside (larger). If the tip fits, but the thick part won't, then you know the gap is set properly. I should note that I check mine with the engine off, not running as described in the FSM.

 

[Roastchestnuts]

I believe on my 87 fj60 it was 12 or 13mm. If you are going to work on it get a set of mm wrenches 10-14 will be fine. but they are usually sold as a set from 10-17mm. It may be easier if you use the boxed end. don't worry about a torque spec just snug them up. This is a 3 handed job, one hand on the wrench, one on the screwdriver and one with a feeler gauge. Its a little bit of a juggling act with you constantly setting the screwdriver down temporarily or the feeler gauge. A boxed end on the nut will help you to leave the wrench sitting in place if you need to.

Here's my write up on the adjustment: How to adjust your 2f valve clearance

Also interestingly the 80 2f engine fsm shows the rocker support nuts (top picture) to be 8 and 10mm but mine (a later 2f) was 12 and 13mm as I recall.
View attachment 2115206

Thanks a bunch for the info. I have feeler gages from when I had to do a valve lash adjustment on my 22r but I could not remember what size it was. also its probs a different size anyway. since the 3fe is new to me I want to be prepared and knowing if I don't have the right tool handy while I have the valve cover off cooling off won't help the job go smoothly. looks like the valve clearances are the same for the 3fe and the 2f engines. Love this forum! soo helpful for a land cruiser newb

 

[KLF]

This is the best tool for adjusting valve tappets, I have a Snap-On one in 12mm for the 22RE and it makes the job sooo much easier. I seem to recall I was able to use it with I did valve adjustments on the 3FE.

Amazon product ASIN B000I1EBYW

I have a set of "step" feeler gauges. The tip is one setting, then it steps up (gets thicker a little farther in. You select the gauge so the thin part is within the gap specification and the thick part is outside (larger). If the tip fits, but the thick part won't, then you know the gap is set properly.

Those are called "go/no go gauges".

Amazon product ASIN B000HI9E7U

 

[Seth S]

Theres really 2 ways to approach adjusting valves. One way is to just use the set thickness feeler gage and adjust the valves to that gage.

The 2nd way is to go through and measure the current gap on all the valves and then adjust per the first method. I like to check the current gap first as it gives me a sense for how things are changing and if perhaps I might have a problem valve somewhere.

 

[NeverGiveUpYota]

By feel. Never has anyone directed me to use a torque wrench on them. It’s awkward enough holding a flathead steady inside the closed wrench.

 

[Seth S]

“Wrist to elbow tight”.

 

[Roastchestnuts]

This is the best tool for adjusting valve tappets, I have a Snap-On one in 12mm for the 22RE and it makes the job sooo much easier. I seem to recall I was able to use it with I did valve adjustments on the 3FE.

Amazon product ASIN B000I1EBYW


Those are called "go/no go gauges".

Amazon product ASIN B000HI9E7U

I am going to get me one of those first tools!