K9 tyre pressure

[Kloud Nine]

K9 tyre pressures, what do you run yours on?

[armouredfarmer]

Well the official answer is, it depends on what version and how much you are carrying. there are 5 different tyre pressures given in the servicing schedule.

A -  35psi front and rear for road, 35psi front and rear off road.

B - 35 front 45 rear for road, 35 front and rear off road.

C - 35 front 50 rear for road, 35 front 40 rear off road.

D - 35 front 55 rear for road, 35 front 45 rear off road.

E - 35 front 70 rear for road, 35 front 55 rear off road.

The schedule lists 29 different versions of K9 to which the five different type pressure code apply.

Common ones are

Truck, G.S., 1 Ton 4x4 Austin K9    A

Truck, G.S., F.F.R. 1 Ton 4x4 Austin K9, Mk 2    A

Radio station, Truck mounted, 1 Ton 4x4 Austin K9 Mk2    A

Radio station, Truck mounted, SRC42/C45HP, 1 Ton 4x4 Austin K9     D

Radio station, Truck mounted, SRD11/R234, 1 Ton 4x4 Austin K9     C

Truck, Tanker, Water, 1 ton, 200 gal., Austin K9   B

I have a C42 and a WS19 fitted in mine and a lot of other kit gets carried in the back as well going to shows so I run on code D, seems to work ok.

 

PT

[Kloud Nine]

Thanks PT, Mine's the radio box. I've been running it at around 50 psi front and rear, Last time I had a new inner tube fitted the guy said 50 was a bit low and said the split rims might come off!

I get alot of vibration, juddering at around 40mph, flattens out at 50mph.

I'll try letting some air out then.

Cheers

C.

Edited May 22, 2018 by Kloud Nine

[armouredfarmer]

yes Mine was on 60 front and rear, and largely unloaded when I got it, the ride did improve when I changed the pressures but the steering got a little heavier...

[armouredfarmer]

Copy of the Service schedule for all those who are interested.

K9 service schedule.pdf