Tap the seal cover back on. Use transfer box number for identification. Your mechanic may suggest checking the fluid condition first and change it if it's dirty. If using a Discovery 2 transfer box the diff lock linkage may need to be swapped over if not already fitted. Two of them are just threaded bar with nuts, am I right in thinking it doesn't matter what position they are in? If you are located in southern California, then visit the for a list of local repair shops around Los Angeles. I recently changed the oil in my transfer box. Undo the screw that holds the drum to the drive flange.
The seal can wear a groove, and that damage will quickly destroy a new seal as it rubs against it. When in extreme boggings or doing lots of low range work, the Land Rover transfer case oil can overheat, which could lead to premature failure of the transfer box. Diff lock works in either ratio, and also works with electronic traction control if fitted. Seems to be coming from above - I have attached some pics. So, basically, instead of cooling the oil, the fins absorb the heath. Extreme off-road driving and heavy towing can have a detrimental effect on most drivetrain and suspension components, but the transfer box usually seems to hold out against the odds, only succumbing to relatively minor issues. The earliest Discovery 2 models still had the diff lock mechanism fitted but no lever, and a kit is available to install the lever and linkage to operate the existing mechanism.
Fit the 10mm studs, used in place of the bolts. It had been leaking anyway and looked like it was coming from the inspection plate on the bottom of the transfer box - I don't know the technical name for this - and I was probably getting a good few drips a day. Problem solving Stiffer steering: The steering feels tighter, with more ground effect and feedback. The image above shows an Underdrive installed on a 1. Once the sump is installed, simply refill as per the noting you will now need up to 3 litres of oil due to the extended capacity. I didn't actually silicone the threads, just a bead around the outside then around each bolt hole.
It has an O-seal, but the pin has likely worn the hole in the casing. A breaker bar is normally needed. Difficult to disengage diff-lock: You can feel the steering pull associated with diff lock, and the warning lamp is on, even though the lever has been moved. It was preset with gasket fitted and 2. Check that the bolts you used to bolt the transfer box to the main box are in the correct positions. Release the hand brake and then undo the adjuster on the back of the brake backplate with a 12mm spanner. This only increases high ratio, leaving low ratio as standard, which might be needed for off-road or towing work.
This means the dowels are hitting each other and stopping the two faces fitting together properly. This unit extends the oil capacity by 500ml and adds cooling fins onto the base to increase air cooling. This is only available on a suffix C or later last number of transfer case , it cannot be changed on Suffix A or B transfer boxes. When shifting ranges allow the vehicle to roll, slowly, to enable the drive dogs to engage, do not use excessive force on the lever to engage the gears. What if you only do normal city and highway driving and your maintenance schedule doesn't mention transfer case fluid change for normal conditions? With the main gearbox and transfer box still in neutral rotate the underdrive output shaft, and check for end float and or excess pre load, the preload was set on a test box with a gasket fitted but may vary from box to box. The simplest way is to ask a garage to run the transmission on a wheels-free lift while listening underneath for the source of the noise.
Image 5 of 13 Oil seeping from the transmission brake drum is a sure sign of a failed rear output shaft oil seal. I left it 48 hours to set and then refilled the oil. Other things could be an in-line filter. The downside of the centre differential is that, if a wheel on one axle loses grip and spins, all the transmission torque will be sent to that wheel it takes the path of least resistance. It transfers the drive from the gearbox across and out at the front and rear of the transfer casing to drive the propshafts to the front and rear axles. The simple answer is no.
Large particles or fragments warrant investigation. Image 9 of 13 Options: increased high ratio left , standard ratio centre , and extra low right which can counter the effect of larger tyres. Make sure to also order the input gear main bearings when replacing the unit. I was wondering if a facet pump would pump gear oil - I'm using 75-85W Full synthetic so it flows better than traditional sludge. I'll drain it and try again, and with new bolts. Then drift it in squarely with a suitable tool - I have used a hub nut box spanner here.
The stock crawl ratio in a Defender is roughly 40:1. Inspect the seal land of the flange for grooves created by the lip of the seal. We simply don't list part 's that we can buy - we stock them. The problem was attributed to lack of lubrication on the mating splines of the mainshaft and transfer gear. The facet pump will transfer 6lpm, so the whole oil can be run through the cooler twice a minute. Damaged input shaft shown next to new unit above. For normal driving conditions, Toyota recommends only inspecting the fluid every 15,000 miles, but doesn't mention replacement.