4D56 Cyl Head bolt torque sequence???

[miked]

Mga Paps,

I have the the manual and it says "tighten 2-3 times" and "torque to specs which is 118 Nm" for 4D56.

Other manual for other engines says "torque to specs then 2x 90 degree sequence"

Another manual for another engine says "Torque to ### Nm, then loosen, then torque to ### Nm, then 2x 90 degree sequence"

So many methods, my question is what is really meant by the "tighten 2-3 times" for the 4D56? is it 2-3x 118 Nm or 2-3x 90 degree or some other angle?

Any info my dear paps? because what i did before was torque to specs then angular tightening method (2x 90 deg). Thanks

[lexxus]

ang dead bolt nyo ba ay allen na 10 ang higpit nun ay 3 times na higpit ang gagawin mo ay hatiin mo yun 118 sa tatlo para maging tatlo na higpit kasi kung 12 points ang bolt ng head nyo yun ay plastic region ang procedure nun

[miked]

ang dead bolt nyo ba ay allen na 10 ang higpit nun ay 3 times na higpit ang gagawin mo ay hatiin mo yun 118 sa tatlo para maging tatlo na higpit kasi kung 12 points ang bolt ng head nyo yun ay plastic region ang procedure nun

lexxus,

head bolt is 10 mm allen hex. yup may naresearch na rin ako na 3 stages ang torque sequence nun. Stage: 1 = 50 Nm, 2 = 80 Nm, 3 = 118 Nm.

Another question: are those 10 mm allen hex torque-to-yield bolts a.k.a non-reusable or not?

salamat ng madami.

[lexxus]

pwede yun re-use head bolt

[miked]

lexxus,

Any additional info on the ff?

1. How about the loosening method for the bolts (manual says 2-3x)? any specified turns to loosen the bolts?
2. Grade of the 10 mm head bolts for 4D56B? M8, M12, M14, etc?
3. How many times those bolts can be reused? 2X or 3X?

Sorry, masyado madami tanong. just searching for a foolproof way so as not to do the repairs again.

[jick.cejoco]

Mga Paps,

I have the the manual and it says "tighten 2-3 times" and "torque to specs which is 118 Nm" for 4D56.

Other manual for other engines says "torque to specs then 2x 90 degree sequence"

Another manual for another engine says "Torque to ### Nm, then loosen, then torque to ### Nm, then 2x 90 degree sequence"

So many methods, my question is what is really meant by the "tighten 2-3 times" for the 4D56? is it 2-3x 118 Nm or 2-3x 90 degree or some other angle?

Any info my dear paps? because what i did before was torque to specs then angular tightening method (2x 90 deg). Thanks

http://pdfdatabase.com/download/91-9...-engine-manual

[miked]

http://pdfdatabase.com/download/91-9...-engine-manual

jick,

i already have that manual months ago and i'm clarifying the contents thus my questions.

[jick.cejoco]

jick,

i already have that manual months ago and i'm clarifying the contents thus my questions.

what it is trying to tell you is:
tighten in two or three stages or passes, e.g.: 50 nM in sequence, then 75 nM in sequence, then 118 nM in sequence + 90 degrees in sequence +90 degrees in sequence

[miked]

thanks jick. how about the retightening issues, shall i use the same torque specs again?

[jick.cejoco]

thanks jick. how about the retightening issues, shall i use the same torque specs again?

quite a while back, the dealership where you bought the car used to retorque the fasteners in the engine and suspension. these days, dealerships are free of that burden because of plastic region bolts or fasteners like yours. sure, if you want to retighten the bolts, use the same specs

[Joey887]

Good day! ask sana ako ng help sa inyo on how to set the engine timing for the 4D56 engine of L300 Van FB... there are two timing belts the long and the short one para po sa ano ang short na timing belt? then paano ko po ma set ng proper timing ang engine? matagal na po kasi na di umaandar ang unit without the timing belt and am tryin to restore it but need your help po, anyone please? thank you in advance... Joey

Ps.. you may send me an email too at jcgallano*yahoo.com

[lexxus]

allen type na bolt ng cylinder head ay hindi na kailangan ng 90 degree kasi hindi naman siya plastic region type yun engine ng pajero na 4M40 yun kailngan niya ng 90 degree..yun 4d56 pagnilagyan mo pa ng 90 degree mapuputol or magkakaron ng warpage ..technician ako dati sa diamond motor sa quezon avenue kaya po alam ko yan..ngayon ay nasa lexus manila ako sa taguig service technician ako dito..tnx

[miked]

thanks lexxus,

i must buy new bolts if that is the case then.

to the guy above askin for the timing of a 4d56: just click on the link provided by jick.cejoco.