At the beginning of 2018, I got a GX470 known as a small land plane, which was more domineering than domineering. Since then, I have embarked on a road of no return to playing Toyota. In fact, Lexus GX470 is 4.7 overbearing. The Toyota series is really legendary. It’s amazing that a 2003 old car can still roar like a boy in the desert. In Xinjiang, I usually play in the desert. I used to play small platoons and now I drive this car. The GX470 is really cool, but the gearbox was scrapped after a few turns. Since the gearbox broke, it is a lesson learned. I really started to study her. Although it is a Toyota that can’t be broken, after all, it is a 16-year-old car. old car.
Then I started to toss, install a gearbox oil temperature gauge, modify the oil temperature radiator, do sound insulation and heat insulation for the whole car chassis, renovate the interior, change the original FJ rear lock, etc. I like to do my own research, I really enjoy the process. Let’s talk about the gearbox and the modification of the new FJ original factory rear differential lock. 1. The oil temperature of the gearbox. When I took it into the car, the gearbox had an oil temperature sensor installed by the original owner. He modified the transmission. The tank temperature sensor method is to put a temperature sensor in the oil pan of the original car, and use the oil temperature gauge on the TB. But after I played it a few times, the sensor at the bottom of the oil began to seep out, ticking, dripping and smoking on the exhaust pipe, and then it was disassembled.
The first thing the original owner told me was to pay attention to the temperature of the gearbox. Haha, I didn’t understand the essence. The gearbox was scrapped for me within two times. After the oil was sprayed, and the oil temperature gauge was just removed, it was not found, so it was. . . Later, after dismantling the car and installing the parts, I found that when the temperature of the gearbox was high, the car turned on the gas at a high speed, but the speed could not be picked up, and the gearbox became a problem for me. It is even a heart disease. I study the working principle of the gearbox and the parts diagram every day. I have consulted a lot of information about the fault of the gearbox. Later, based on my fault performance, I deduced that there should be a problem with the torque converter. I dismantled my original broken one. The torque converter of the gearbox was refurbished and repaired by a local repairman. After getting on the car and replacing the torque converter that I dismantled, I was pleasantly surprised to find that the problem was solved. Haha thanks to Baidu. . It feels like a blind cat meets a dead mouse.
The first step is to quickly research and install a temperature sensor. There are two types of research. One is to install a temperature sensor in the bottom of the oil just like the original car owner. The second is to read the original car oil temperature and display it on the mobile phone or on other devices. At present, it is researching to read the original car data and connect directly with the oil temperature gauge, without opening holes in the oil bottom, and non-destructive installation. The second step is to modify the enlarged gearbox oil temperature radiator. At that time, my heart was too dark, so I bought a 30-row oil temperature radiator directly from the boss of TB. The radiator is too big, especially in winter, when running at high speed, the oil temperature can’t get up to an average of 60-70. Now when running at high speed, some cardboard blocks the radiator. but. What I want to explain is that this enlarged radiator is so cool to run in the desert. The oil temperature has never exceeded 100, and it is basically kept at 70-90. Minutes, the oil temperature quickly dropped to 70. I can’t find the picture of the modification. Take some pictures when it’s time to finish.
Change the gearbox and increase the radiator
Change the gearbox and increase the radiator
oil temperature gauge
oil temperature gauge
Oil bottom hole oil temperature sensor
Tablet to read transmission oil temperature
2. Change the original rear axle of the new FJ with a differential lock because it mainly plays in the desert. Many people here think that the rear differential lock is useless in the desert. If you play in the desert, then I hope you It doesn’t take much in the desert, just break the front half shaft once, and you’ll see how useful the rear insert is in the desert. I used to play BJ40, 2.4 short axis, although the power is not big, but the short axis, I changed the front and rear bars and the front and rear approach angles are very large, so it is much stronger in terms of passability and escape ability. I think I just got this GX470 When I drove it, I really wanted to throw it away, and it didn’t go well. I’ve learned to drive the 47 now, but I’m still afraid to drive the 47 alone. So if the technology is not good, then rely on equipment. Adding a rear lock can greatly improve the ability to get out of trouble. In terms of rear lock selection, I studied ARB’s air lock, vacuum lock, and automatic mechanical differential lock. Later, I chose the rear axle differential of the original Toyota FJ factory. Speed lock, the reason is that the original car owner has a set of original factory FJ rear axle with rear differential lock, there were some abnormal noises before, hahaha, I’m coming over and playing with it first, the key is to save money. The original car owner told me that FJ has a module that controls the rear differential lock of the original car. I need to buy that module to control the rear plug-in. Later, I asked about a module that cost more than 1,000 to dismantle the car. It does not have a wiring harness, so I will study it myself. Toss it. Researched the rear lock actuator, researched the control circuit, started to make wiring harnesses, made controls, loaded the car and found a friend’s repair shop, and changed the rear axle. When changing the bridge, I found the rear axle of FJ and GX470, which is the rear axle balance bar of LC120. The set is different. After installing the rear axle, I drove home and went through the rear axle differential lock circuit by myself. The test drive was perfect. Three rear axle differential lock control circuit video and some pictures.
Control Circuit Wiring
Control circuit switch wiring
Control circuit semi-finished products
Control circuit semi-finished products
well-made control circuit
Remove the original car rear axle
Remove the rear axle
oil seal
GX470 rear axle
FJ rear axle
FJ rear differential lock
Differential lock switch wiring
Differential lock actuator wiring
Differential lock control circuit wiring
Differential lock switch wiring
Differential lock actuator wiring
After the rear axle was installed, I told the original car owner that there was a problem with the sound of the rear axle. However, the corner teeth of the rear axle basin were removed and there was no iron cutting. I feel that the tooth surface is also good. It stopped ringing. My analysis is that one is that the gap between the corner teeth of the basin is wrong, and the other is that the tapered roller bearing behind the corner teeth is not working.
