40th anniversery 80 series centre diff

Submitted: Wednesday, Mar 21, 2007 at 15:53
ThreadID: 43483 Views:1755 Replies:4 FollowUps:5
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Just replaced the old 80 series with a 40th annivery model which has a viscousus? centre diff. neither the owners manual nor my old workshop manual mention what oil is needed in the transfer case for this diff lock.
can anyone advise or do I just keep on using 85/140 penrite gear oil as in the old truck.
cheers
Howard
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Reply By: Peter 2 - Wednesday, Mar 21, 2007 at 19:28

Wednesday, Mar 21, 2007 at 19:28
I could possibly be wrong but I think the viscous unit is a sealed unit like a bigger version of a fan coupling and just replaces the centre diff unit.
The transfer would then be filled with oil as per normal but should theoretically hold slightly less.
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Reply By: Member - Matt M (ACT) - Wednesday, Mar 21, 2007 at 20:06

Wednesday, Mar 21, 2007 at 20:06
Howard,

Checking my workshop manual the answer appears to be the same oil (SAE 75W/90 GL4 or GL5) and a quantity of 1.7 litres. This is for the HF2AV model which is 'Dual range, constant four wheel drive with locking differential and viscous coupling'.

The HF2A model (no viscous coupling) takes less (1.3 litres).

By the way, back from our 6 months away and the HF aerial mount worked a treat, so thanks again for the help. SWMBO demanding I now sell the radio, but being a bloke, I am trying to hang on to all my toys. Will let you know and get it back to you should she win.

Cheers,

Matt.
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Follow Up By: Member - Rob S (NSW) - Wednesday, Mar 21, 2007 at 20:17

Wednesday, Mar 21, 2007 at 20:17
I knew some one would beat me to answer that, i will have to pick up on my typing speed.
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and that's when I thought I was wrong!

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Follow Up By: Member - Matt M (ACT) - Wednesday, Mar 21, 2007 at 20:26

Wednesday, Mar 21, 2007 at 20:26
Rob,

Pretty rare thing that I can answer anyone's question. Extra incentive to type faster.

Nice looking vehicle. What does the Rugby World Cup Upgrade give you? I haven't seen them before. Does it sidestep quickly or (if the Australian version) does it come with a larger choke?

Cheers,

Matt.
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Follow Up By: Member - Rob S (NSW) - Wednesday, Mar 21, 2007 at 22:44

Wednesday, Mar 21, 2007 at 22:44
Matt,
They came out may 95 petrol only, i think they were the first in the series 2
upgrade came with a few more goodies than a std GXL. similar to the earlier Winter upgrade models only good for show

16" Alloy Wheels, 5 Speaker Stereo, ABS (Antilock Brakes), Adjustable Steering Col. - Tilt only, Air Conditioning, Airbag - Drivers, Body Colour - Fittings, Body Side Mouldings, Calipers - Front 2 Spot, CD Player, Central Locking, Centre Differential, Coil Springs, Cruise Control, Disc Brakes Front Ventilated, Disc Brakes Rear Ventilated, Flares Body Coloured, Headlamp Protectors, Headrests - Integrated 2nd Row, Intermittent Wipers - Variable, Leather Gear Knob, Leather Steering Wheel, Limited Slip Diff, Mudflaps - front, Mudflaps - rear, Power Door Mirrors, Power Steering, Power Windows - Front & Rear, Radio Cassette, Rear Wiper/Washer, Remote Fuel Lid Release, Side Steps, Sports Instruments, Tacho, Velour Trim, Viscous Coupling
I only ever made one mistake
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Reply By: Member - Rob S (NSW) - Wednesday, Mar 21, 2007 at 20:12

Wednesday, Mar 21, 2007 at 20:12
Hi the transfer case you have is the HF2AV according to my gregorys manual
with viscous coupling
1.7L capacity SAE75W/90.That is what is use nothing special.
Same oil as the gear box.
I think 85/140 maybe to heavy?
I only ever made one mistake
and that's when I thought I was wrong!

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Reply By: Member - Howard (ACT) - Wednesday, Mar 21, 2007 at 22:14

Wednesday, Mar 21, 2007 at 22:14
Thanks everyone for the quick replies.
Have noticed the new vehicle much lighter in the gear change but then the old girl has 425 000 km and is original in clutch and gearbox.
May have to look at change in practice and go a lighter oil.
I have used the 85/140 in diffs, g/b and transfer on the basis that a thicker oil takes longer to thin out when doing big days.ie 8-10 hrs and +1000km.
Matt, noticed the aerial mount in the photos of your trip , glad it worked well.
cheers
Howard
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Follow Up By: Member - Doug R (QLD) - Wednesday, Mar 21, 2007 at 22:26

Wednesday, Mar 21, 2007 at 22:26
Howard,
Good to hear a series 80 gearbox can go 420k; mine's just coming up to 300k and everything fine except a little chatter from the box. I thought I'd heard that the g'box was the weak link in an '80 series but now I'm encouraged.

I'm expecting to go to 1mill (should I live that long :) )

Doug

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Follow Up By: Member - Howard (ACT) - Thursday, Mar 22, 2007 at 13:49

Thursday, Mar 22, 2007 at 13:49
Doug,
I am aware of a few who have had problems with 80 series gear box ( synco on second, rattly 5th etc.)but in all cases its the 150 box from the naturally aspirated diesel not the 151 box in the petrol and t/d.
The 151 is a heavy duty version.
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