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ARB airlockers for GQ patrol

Posted: Tue Sep 02, 2008 7:31 pm
by Fatmatt
so i bought these off a mate, both brand new still in boxes, should they both be the same code???

ones RD24 and the other is RD78a

Re: ARB airlockers for GQ patrol

Posted: Tue Sep 02, 2008 7:39 pm
by heathhoppy
Fatmatt wrote:so i bought these off a mate, both brand new still in boxes, should they both be the same code???

ones RD28 and the other is RD78a
if my memory serves me correctly rd78a is a front locker
and rd 28 is rear i think or the other way?

Posted: Tue Sep 02, 2008 7:42 pm
by MyGQ
They should almost be the same yes

the Front Diff in a GQ is a H233B and the rear is also a H233B, only difference is the Front is a 31 spline diff and the rear is a 33 spline diff.

The centers are almost identical from front to Rear GQ diffs, just a little bigger in the rear for the LSD.

Posted: Tue Sep 02, 2008 8:30 pm
by CWBYUP
What you have is the old style Front and Rear.

RD28 is the rear from memory.

Nick

Posted: Tue Sep 02, 2008 9:37 pm
by Fatmatt
ta fellas, also ive been asking my self this queston? what oil for a airlocker? lsd or just normal? and any reccomeded brands?

oh and its rd24 not 28? :S?

Posted: Tue Sep 02, 2008 9:47 pm
by 4x4 guy
those are the right diffs for your patrol.
you should use lsd oil.any brand.

Posted: Tue Sep 02, 2008 9:55 pm
by GQ Bear
Looking at ARB price catalogue, February 2006
GQ
Front RD78A

Rear RD24 (coil sprung models) or RD70 (leaf sprung cab chassis)

GU
Front RD78A

Rear RD71 (petrol & 3.0TD manual) or RD24 (other LWB and coil cab) or RD17 (some 2002 onwards may req)

ARB price catalogue, April 2008

GQ
Front RD136

Rear RD24 (coils) or RD70 (leafs)

GU
Front RD136

Rear RD71 (petrol & 3.0TD manual) or RD24 (other LWB and coil cab) or RD17 (some 2002 onwards may req)


Confusing, eh :? No mention of RD28. Probably in an earlier (or later) catalogue. Did they change the locker or just the codes in the last couple of years? Ask a good ARB dealer about the RD28.There's an RD128 for a Discovery/defender 1993 onwards

Posted: Tue Sep 02, 2008 9:56 pm
by TEAMRPM
4x4 guy wrote:you should use lsd oil.any brand.

Why :?

theres no clutch packs in the arb's, 80w90 will be fine. they are treated as an open diff.

Posted: Tue Sep 02, 2008 10:11 pm
by Fatmatt
GQ Bear wrote:Looking at ARB price catalogue, February 2006
GQ
Front RD78A

Rear RD24 (coil sprung models) or RD70 (leaf sprung cab chassis)

GU
Front RD78A

Rear RD71 (petrol & 3.0TD manual) or RD24 (other LWB and coil cab) or RD17 (some 2002 onwards may req)

ARB price catalogue, April 2008

GQ
Front RD136

Rear RD24 (coils) or RD70 (leafs)

GU
Front RD136

Rear RD71 (petrol & 3.0TD manual) or RD24 (other LWB and coil cab) or RD17 (some 2002 onwards may req)


Confusing, eh :? No mention of RD28. Probably in an earlier (or later) catalogue. Did they change the locker or just the codes in the last couple of years? Ask a good ARB dealer about the RD28.There's an RD128 for a Discovery/defender 1993 onwards
sorry i edited my first post, it was a rd24 not 28

TEAMRPM wrote:
4x4 guy wrote:you should use lsd oil.any brand.

Why :?

theres no clutch packs in the arb's, 80w90 will be fine. they are treated as an open diff.
so.... what one guys ? :P

Posted: Tue Sep 02, 2008 10:15 pm
by TEAMRPM
TEAMRPM wrote:
4x4 guy wrote:you should use lsd oil.any brand.

Why :?

theres no clutch packs in the arb's, 80w90 will be fine. they are treated as an open diff.
so.... what one guys ? :P[/quote]


either will be fine but 80/w90 is cheaper and does the job just fine. ive used thic combo for years, never had an issue.

Posted: Wed Sep 03, 2008 6:35 pm
by 4x4 guy
the lsd oil is used and recomended in airlockers because the bs viton o rings like the lsd oil and will last longer.