Toyota 80" Part Time 4wd Conversion kit Heavy Duty
Marks Adaptors Part Time 4WD Conversion Kit
This kit is to suit 80” Toyota Land Cruiser’s, This is
the Heavy Duty version!
We also have the standard versions and to suit the 100”
Toyota Land Cruiser kits in our store as well.
Adaptors manufacture a part time 4WD
conversion for the 80 and 100 series HF2A full time 4WD
transfer case as fitted to all
RV, GXL, and Sahara Land Cruisers manufactured from 1990 on.
Duty Part Time 4WD Conversion Kit
Adaptors manufacture a heavy duty part
time 4WD conversion for
the 80 and 100 as above.
The heavy duty version is supplied with heavy duty Free Wheel Hubs. The hubs are
fitted with a heat treated carbon steel drive ring. The drive ring in the STD
version is made from a cast steel and for this reason is the weakest part of
these hubs. Vehicles fitted with front diff locks have been known to break the
standard AVM freewheeling hub. The new heavy duty hubs have been designed to
strengthen this weak point in the drive line when diff locks are
of the most popular products that Mark has designed is the Land Cruiser Part
Time 4WD kit.
kit is exported all over the world & has proven an extremely popular
addition to our product range.
following questions are the most common received by our sales
does it work?
centre diff becomes completely inoperative as the spider gears & the
rear side gear is completely removed. The rear spool supplied in the kit
is manufactured from heat-treated gear steel & internally splined to
allow permanent drive to the rear wheels. The front side gear is retained,
as it is required to support the front output shaft in the main
kit is supplied with freewheeling hubs & is fitted to prevent the
front diff, axles & drive shaft from turning while the vehicle is
are the benefits?
are several benefits to consider when converting your Land Cruiser 80 or
100 series to Part time 4WD. The steering no longer has a tendency to pull
hard when powering out of a corner which adds to less wear & tear on
the steering components such as tie rod ends & steering box. The
steering is also more direct or positive.
is a marked improvement in fuel economy an average of 5%-10%. The
acceleration is also improved due to the reduction in losses associated
with driving the front differential, drive shaft & CV
these components no longer being driven, a considerable increase in their
service life can be expected.
I fit it myself?
kit is supplied with full fitting instructions which are step by step. If
you consider yourself mechanically minded & you can read instructions
(believe me, not everyone can read) then yes, you can fit the kit
yourself. There is no need to pull the transfer case out of the vehicle.
Remove the back cover off the transfer case fit the spool supplied as per
the instructions. The freewheeling hubs are fitted as per the hub
installation guide. There are no special tools required. We are only a
phone call away if you experience any
if I can't fit the kit?
problem, your local mechanical workshop will be more than qualified to fit
the kit for you or contact our sales team for an installation
do I engage 4WD once the kit is fitted?
press the centre diff lock button located on the dash, engage the hubs
& select low range. If your vehicle has a viscous coupled diff your
vehicle will not be equipped with a centre diff lock button & you will
need to fit one. The fitting instructions will have a photo of the switch
with a part number supplied to enable you to purchase the switch from your
local Toyota parts supplier.
do I know if my vehicle is fitted with a viscous coupling?
vehicle fitted with a viscous coupling does not have a centre diff lock
button on the dash.
I need to fit a diff lock button when I fit the part time
you do. This is to select 4WD in high range. The part number of the button
is provided in the fitting instructions
happens to my Viscous coupling in the transfer case?
viscous coupling is no longer required & is removed from the transfer
does this affect my ABS?
you have the IFS 100 Series Land Cruiser your ABS will not be affected as
the ABS sensor is located on the wheel hub. The live axle models have the
ABS sensor located on the CV joint. By fitting the freewheeling hubs the
CV joint is prevented from turning therefore affecting the ABS system
& causing an ABS malfunction light to appear on the dash. To prevent
this from happening you can leave the hubs engaged whilst ABS is
is the 100 Series kit more expensive?
100 series full time 4WD front axle splines are larger than the part time
4WD 100 series and the previous 80 series model Land Cruisers, for this
reason we have re-manufactured AVM freewheeling hubs to suit, therefore
the cost is higher.
these kits readily available?
we have increased our production run on these kits because of their
stock ready to go