OFF-ROAD Diff Lockers & Associated Equipment Ashcroft Transmissions Diff Locker > A unique non-rotating annular piston locking actuator is designed to eliminate air leaks sometimes found with rotating seals > The annular piston is also designed to eliminate the oil blow back in the air exhaust line > The large piston area gives maximum hold-in force to reduce the possibility of jumping out of lock > Locking ring gives full 6mm positive engagement with side gear, again reducing the possibility of jumping out of lock DA1224 > Gears have been redesigned for maximum strength and durability > The lock ring is made from high spec 300m steel to provide ultimate strength and ability to withstand shock loads > Locking actuator cage made from steel to withstand shock loading caused by power locking > Locker body turned from billet 817M40T (EN24T) to give optimum strength > Only change necessary to fit the locker is drill and tap the diff housing ¼” bsp for the air feed fitting DA1207 > No changes to the axle case > Requires on board air supply - not supplied DA1224 Defender 90 - 1993 onwards Front & Rear Defender 110 - 1993 onwards Front Discovery 1 - 1993 - 1998 Front & Rear Discovery 2 Front & Rear Range Rover Classic - 1993 - 1996 Front & Rear DA1224SN Defender 110 - 2002 onwards (Wolf) Rear Range Rover P38 Front & Rear DA9011 DA9011 Heavy-duty Crown Wheel & Pinions Automatic Torque Biasing Limited Slip Differential With the standard diff design, under extreme conditions, Defender - 1993 onwards Front & Rear the front diff tries to climb out of full engagement under full Discovery 1 - 1993 - 1998 Front & Rear power and then easily strips the teeth. Ashcroft has cut the Discovery 2 Front & Rear gears in reverse for the front so they try to push together Range Rover Classic - 1993 - 1996 Front & Rear in mesh rather than push out so much stronger then the Note -Not suitablefor Salisbury axles. original design. Ashcroft looked at the materials used and > Fully automatic - needs no driver input compared these to the genuine materials used by Land > Totally transparenton road, i.e., no unwanted adverse Rover. The range are made from improved materials which is effects an improvement over the genuine specification. All pinions > Only comes into play when one wheel looses traction, accept the later 24 spline drive flanges and have the female i.e., a difference in wheel speed thread to accept the later type bolt (FS112301P) and washer > Enhances the traction control as it multiplies the bias (FTC5413), all ring gear threads are the stock ⅜ UNF, we load created by the braking effect of the traction control stock the late flanges head high tensile bolts for these also > Needs no special oils FTC5150. Ashcroft have chosen to coat the crown wheel and > Needs no adjustment as the gears compensate for any pinions in chemical black to aid corrosion resistance and offer wear that takes place a unique appearance. > Only with 24 spline side gears DA1207 Front with reverse cut Heavy-duty 4.12 ratio using a tooth count of 33 on the crown DA1225 wheel and 8 teeth on the pinion. Cross Pin Defender/Discovery 1/Range Rover Classic The standard LT230 transfer boxes DA1508 Rear long pinion have a two piece cross pin in the Heavy-duty 4.12 ratio using a tooth count of 33 on the crown centre diff, this is two shafts with a wheel and 8 teeth on the pinion. cut out in the centre so they can Defender - up to 7A/Discovery 1/Range Rover Classic overlap. This one piece heavy-duty cross pin is much stronger. Detroit Diff Lock Detroit Locker Lever Kit > 100% locking differential > Legendary traction > Ultimate performance The legendary Detroit Locker began the revolution in performance differentials and still leads the industry today as an Eaton brand. The Detroit Locker is the most durable and dependable locking differential available. The Detroit Locker maximises traction by delivering 100% of “Recognised for its the torque to both drive wheels. It is engineered to keep both wheels toughness as well in a constant drive mode, and has the ability to automatically allow wheel speed differentiation when required. No other performance as its smooth & quiet differential has the reputation for delivering traction in mud, snow, operation.” DA1178 rocks and on the track. The choice of professional racers and off-road Discovery 2 enthusiasts around the world! The durability of the Detroit Locker is Early Discovery 2’s were unmatched! not supplied with a centre diff DA5700 lock function for the LT230 transfer Series 3/Defender/Discovery 1/Range Rover Classic 24 spline RearDetroit Truetrac case although the vehicles still have the DA5701 > Smooth operation centre diff lock installed in the transfer case. Series 3/Defender/Discovery 1/Range Rover Classic 10 spline Rear> Performs open until needed To get the diff lock function to work it just DA5704 > Fully automatic limited slip needs connecting. The linkage is easy to fit, Defender - Salisbury axle Detroit Locker 24 spline Rear The Detroit Truetrac was the first helical gear differential ever cable operated and very neat. You attach introduced into the automotive aftermarket as an Eaton brand. It the existing high/low stud to this new lever remains the leading helical gear-type limited slip differential in the assembly. This kit will only work on transfer industry. Detroit Truetrac’s proven helical gear design eliminates cases with serial numbers starting with the need for wearable parts, resulting in maintenance free traction. either 41D or 42D. Recognised not only for its toughness but also it’s smooth and quiet operation. Engineered to work efficiently in front and rear axles, semi-floating (C-clip axles) and transfer cases. Power transfer is so IMPORTANT smooth, it literally goes unnoticed by the driver - even in front wheel When fitting a metric diff centre with drive axles. Proven design, low cost and effective performance, all metric bearings into an imperial casing make the Detroit Truetrac limited slip differential the ideal choice for a you will require the additional following wide variety of vehicle applications. No maintenance - just traction! parts. Diffs went from imperial to metric in DA5705 approximately 1983, take a look at one of Series 3/Defender/Discovery 1 the heads of the four large journal end cap Range Rover Classic 10 spline Rear bolts, if ‘8.8’ is on the head it is metric, if DA5709 not then it is imperial. Parts are required for Series 3/Defender/Discovery 1/Discovery 2 fitting to both Truetrac or Detroit lockers. Range Rover Classic 24 spline Rear DA5712 Spacer ring DA5710 DA5713 Imperial bearing sleeves Series 3/Defender/Discovery 1/Discovery 2 RTC9530 Bearings “The choice of professional racers &Range Rover Classic 24 spline Front 2 x bearings are required off-road enthusiasts around the world” DA5711 576521 Longer bolts x 10 Defender - Salisbury axle 24 spline Rear 121