4wd ....? ?

[gjay]

ok im back again with another question please forgive my ignorance...could someone explain to me exactly how four wheel drive works on my hi lux,when i flick the 4wd switch,i can hear it engaging down below.. wat power does the back wheels get ?and also wat power does the front wheels get ? are they spilt even? also wat types of diff does the front and rear have ? i would just like to know...many many thanks gjay..

[Morr]

ok im back again with another question please forgive my ignorance...could someone explain to me exactly how four wheel drive works on my hi lux,when i flick the 4wd switch,i can hear it engaging down below.. wat power does the back wheels get ?and also wat power does the front wheels get ? are they spilt even? also wat types of diff does the front and rear have ? i would just like to know...many many thanks gjay..

Your Surf is normally RWD, when 4WD is engaged the drive is split 50/50 between front and rear as your model does not have a centre diff (which is why 4WD should only be used in loose traction conditions)
Your front diff is a normal open type. The rear is also usually an open type, although some have limited slip diff's fitted (many of which are by now worn out and operating as a normal open diff). To determine which type of rear diff you need to check the axle code of the vehicle, a search of other posts on this forum will tell you how to interpret the axle code.

General info on selection and use of the 4WD system can be found here

[BUSHWHACKER]

The front diff works using this...
http://www.toyotasurf.asn.au/techsite/add.htm

The power is split 50/50 when in 4WD.

Two types of rear axel were fitted, LSD or open diffs. If you have a limited slip diff, there should be a sticker on the diff, or a code number on the vin plate.

Other specs here......

http://www.toyotasurf.asn.au/techsite/24lt.htm

[gjay]

thanks lads ...a lot of info to take in ,but i am now beginning to understand !! thanks again ! gjay (as fellow surfers of coarse!)

[gjay]

The front diff works using this...
http://www.toyotasurf.asn.au/techsite/add.htm

The power is split 50/50 when in 4WD.

Two types of rear axel were fitted, LSD or open diffs. If you have a limited slip diff, there should be a sticker on the diff, or a code number on the vin plate.

Other specs here......

http://www.toyotasurf.asn.au/techsite/24lt.htm

my trans and axel codes are ...r150e/g285 ,ive searched the forum but cant find any usefull threads...would any one know ? i would like to know just for the hell of it ...

[Morr]

From reading other threads such as this one you would appear to have an LSD as the last digit of your axle code is a 5.
Having said that, it may well be worn out, the only way to know for sure if you have a working LSD is to jack up the rear axle, and turn one wheel, if the opposite one goes in the same direction you have a working LSD, if it goes in the opposite direction its either an open diff or a worn out LSD.

[nero279]

r150e i think is the gearbox identifier, g285 bit explained here http://toyota.off-road.com/toyota/ar....jsp?id=274535

[gjay]

From reading other threads such as this one you would appear to have an LSD as the last digit of your axle code is a 5.
Having said that, it may well be worn out, the only way to know for sure if you have a working LSD is to jack up the rear axle, and turn one wheel, if the opposite one goes in the same direction you have a working LSD, if it goes in the opposite direction its either an open diff or a worn out LSD.

checked all the info and i do have a l.s.d ..went out (in the pouring rain) jacked her up and both wheels are turing in the same direction ...i should maybe now change the oil in it to try and keep it good..(158k on my hilux) wat do u guys think ??

[dieselboy]

From reading other threads such as this one you would appear to have an LSD as the last digit of your axle code is a 5.
Having said that, it may well be worn out, the only way to know for sure if you have a working LSD is to jack up the rear axle, and turn one wheel, if the opposite one goes in the same direction you have a working LSD, if it goes in the opposite direction its either an open diff or a worn out LSD.

wouldnt you have to do this in N or neutral as well?

[BUSHWHACKER]

wouldnt you have to do this in N or neutral as well?

Yes.

[Morr]

wouldnt you have to do this in N or neutral as well?

Oops, spot on, a very important bit I forgot to mention