How to properly use the transfer case on the Prado 120?

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1.14.2 Automatic transmission control

Automatic transmission control

Switching the selector from position “P”

Your car is equipped with a system that locks the selector shift from the “P” position when you press the brake pedal. Before switching the selector from the “P” position, you must turn on the ignition (turn the ignition key to the “ON” position) and fully press the brake pedal.

Attention: if you were unable to switch the selector, you must do the following:

If this phenomenon occurs again, you must immediately contact a service station.

Gear shift

Moving the selector between the corresponding automatic transmission positions must be done in the direction of the black and/or white arrow, tilting the selector towards the passenger.

Shifting gears in the direction of the black arrows requires pressing the brake pedal. Shifting gears in the direction of the white arrows occurs while driving and does not require braking.

Selector lever position P, R and N

Position “P” (parking). The front drive wheels are mechanically blocked from rotation. Move the selector lever to position “P” only after the vehicle has come to a complete stop and the parking brake has been applied.

Position "N" (reverse). It is prohibited to turn the lever into this position until the vehicle has come to a complete stop.

Position "N" (neutral). The automatic transmission is in neutral (no gears are engaged).

Attention: the fuel supply is automatically stopped if the range selector lever is in the “P” or “N” position and the engine begins to idle at high crankshaft speed.

Ranges "D4", "2" and "1"

Range “D4” (movement). The selector lever must be in this position at all times while the vehicle is moving under normal road conditions. In the “D4” range, automatic shifting of 1st, 2nd, 3rd and 4th gears is provided. The fourth (overdrive) gear allows you to reduce the crankshaft speed and engine noise level, as well as improve the fuel efficiency of the vehicle.

After starting the engine and turning on the “D4” range, the automatic transmission operates in an economical mode, that is, gear shifts in the gearbox are made according to a program that ensures high fuel efficiency of the vehicle.

Range "2"

In the “2” range, switching from first to second gear is ensured and switching to 3rd and 4th gears is prevented. The automatic transmission operates mainly in second gear. However, when you fully press the accelerator pedal, the automatic transmission automatically switches to the first stage.

Turn on range “2” to increase traction when driving on long climbs in hilly and mountainous areas, to improve engine braking efficiency on steep descents, and to more confidently start the vehicle on slippery road surfaces.

Attention: when towing a trailer, it is prohibited to move away with the “2” range turned on.

Range" 1"

Turning on range “1” ensures the highest possible engine braking efficiency when driving on steep descents. In range "1", the gearbox constantly operates in first gear.

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Disadvantages, breakdowns and problems of Toyota 1GR-FE

Even slight overheating can lead to cylinder head gasket failure.

The engine is quite noisy, you can constantly hear clattering and chirping

It happens that the VVT-i phase regulator clutches crack when starting the engine

The reason for the power unit tripping is usually the ignition coils

The idle speed fluctuates due to dirt on the throttle valve.

Pump reliability is low; valve clearances require adjustment

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Options

The vehicle's package, regardless of its export destination, included the HAC-Hill Start Assist Control system, thanks to which the car could move away while on an incline of up to 32 degrees. Also, if necessary, a similar option for descent DAC-Downhill Assist Control was included. For a frame SUV, this ability was especially valuable, since almost all the roads on its route are replete with descents and steep ascents. In addition to these two complex systems, the car had VSC course stability adjustment and electronic optimization of both suspensions - TEMS Toyota Electronic Modulated Suspension. A more active analogue of ABC traction control was also used under the designation A-TRC.

The vehicle configurations in terms of current equipment are defined in four options:

The first is considered basic and includes 17-inch titanium alloy wheels, climate control, audio system, fabric seat upholstery and tire pressure monitors.

The Legend trim offers nickel-plated body surfaces, power-adjustable and heated outside mirrors, and a leather-wrapped steering wheel and control levers. Multimedia system with 8 speakers with subwoofer, 18-inch wheels.

The Prestige package equips the car with fog lights, rear and side video cameras, electric drives with a memory function in the front seats, a JBL audio player and a navigator.

Read more: Oil total 9000 5w40

The most extensive configuration of the SUV is the Executive version, which includes all of the above functions and systems, plus leather interior trim with natural wood trim and Go navigation combined with the Toyota Pre-Crash Safety system.

Technical characteristics of the Toyota 1GR-FE 4.0 liter engine

Replacing the chain on the transfer case

The appearance of extraneous knocking or ringing when turning on the center differentials, as well as jolts while driving, is a clear sign of the need to replace the chain in the transfer case. It can be replaced without removing it from the car.

To replace the chain you must:

• Disconnect ground from the battery.
• Place the car on a lift, pit or overpass.
• Unscrew the speed sensor.
• Remove the 2 hex nuts on the top of the transfer case.
• Unscrew 12 bolts around the body.
• Unscrew the nuts of the front and rear universal joints.

On the large housing cover there is a small one, under it there is a retaining ring that holds the drive shaft bearing - it needs to be removed. When removing the cover, you need to hold the main shaft and tap the front driveshaft.

Shafts and bearings must be inspected for wear, the chain replaced and reassembled in reverse order. When stretching a chain, some experts remove one link so as not to buy a new one. The final stage of replacement is filling the transmission oil.

Basic transfer case malfunctions

The transfer case, like other units, requires proper maintenance. This is primarily due to the lubrication of rubbing parts. Lack of oil, contamination or poor quality product lead to rapid wear and damage to the parts in the box.

The main malfunctions of the transfer case are:

1. Noisy when driving. Wear and wear of the bearing seats create play, which generates additional noise. This could also be caused by a stretched transfer case chain. To resolve these problems, it is necessary to replace worn components.
2. Knocking and grinding. Similar sounds appear when a bearing fails. If you continue to use the faulty element, the transfer case will fail in a short time. It is necessary to disassemble the assembly and replace the bearings.
3. Unable to turn on or difficult to turn on. This indicates damage to the gear fork or destruction of the gears. Serrations on the gears prevent them from engaging. The cause of the breakdown is rough operation of the all-wheel drive. To fix the damage, it is necessary to replace the gears and forks.
4. Self-disengagement of the transmission indicates wear of the clutch, retainer or teeth on the gear. When the mechanism is turned on, incomplete engagement occurs. It is necessary to disassemble the mechanism and replace defective and worn parts.
5. Overheat. If the clutch engagement servo drive fails, the unit is constantly on and overheats. To fix this, you need to replace the servo drive.
6. Oil leak. When the seals wear out and the gaskets are pressed through, transmission fluid leaks. Damaged elements need to be replaced. Repair is also required if there is a crack in the housing.
7. Constant crashes when turning on and off. Due to a faulty electrical part. So, due to the failure of the transfer case control unit or broken connections, there may be malfunctions in the operation of the transfer case. To eliminate such a malfunction, it is necessary to check all connections and replace unusable electronic elements.
8. Jerking when moving. This signals a strong chain stretch in the RK. If these symptoms are ignored, the chain may jump off and damage the box body. To fix the problem, you need to replace it.
9. Strong vibration. Worn bearings can create strong vibrations in the shafts, which causes vibration. The alignment of the transfer case relative to the gearbox may be disturbed - this is due to loosening or damage to the fastenings of the box to the body.

An unbalanced driveshaft can cause vibration.

To correct these malfunctions, it is necessary to replace worn parts, check the balance of the cardan shafts and the reliability of fastening of all elements.

Predecessor J70 19841990

First developed as the light-duty vehicle of the 70 Series, in November 1984. Available only in short body with options for soft top or hard top (metal top). Names like Land Cruiser II, Land Cruiser, and Bundera were made for these “light duty” Land Cruisers. The Bundera was a short wheelbase—being 2,310 millimeters (90.9 in)—with two doors, a plastic top, and barn doors at the rear. There were three options for the engine, the 2.4 L (2366 cc) 22R petrol engine and 2.4 L (2446 cc) 2L and 2L-T diesel and turbocharged diesel engines. Transmission for the petrol engine is the G52 type while the diesels used the R150 and R151 types. These were the same engines and transmission used in 4Runner, in cooperation with Hino.

Lexus GX ✪REPLACEMENT✪ › Logbook › 59. Fixing a leak from under the transfer case actuator

When we changed the automatic transmission fluid, we discovered a fogged transfer case. An O-ring was ordered. Together with Sergei, who made a detailed photo report at the Lexus Club, we replaced the o-ring.

There is a nuance there. As soon as the actuator cover is removed, we take a photo of the position of the top gear and the blue pointer.

Full size Top gear and blue pointer (axis)

Full size Top gear and blue pointer (axis)

Because If you don’t remember the initial position, you can then “dance with a tambourine” around the distributor for a long time. Fortunately, I did it with an experienced person, they immediately took this nuance into account, and for good reason. When I removed the actuator, it moved very tightly, and in the end it flew off the axis, which caused additional rotation of the gears. Also, if after removing the actuator cover there is oil inside, then the oil seal needs to be changed. Next, pull up the small gear, which removes torque from the electric motor.

Toyota Land Cruiser Prado Bucephalus › Logbook › 2nd start or Sprint booster

Good afternoon everyone. The first heavy snow fell in Almaty. We all know what this means. Everyone buys tires, changes their shoes, and of course the average speed of traffic on the roads slows down. As you know, the 120 Pradikas have a 2nd start button, due to which the car starts from 2nd speed. Those. everything will be smooth, without slipping to eliminate the risk of skidding (in winter) or digging in (in summer in sand/mud). However, this function has one drawback. Since you will start from second speed, your consumption will increase. And no one wants this, and neither do I)). During the analysis of the functions of the sprint booster installed on me, I came to the conclusion that it would be more expedient to use it, namely the ECO function (I chose the middle 4th stage). The argument for this decision was that the effect in both cases is the same, i.e. The machine smoothly picks up speed and eliminates the possibility of over-throttle on ice. However, in the second case, we start from 1st gear and the revolutions do not jump to 2500-3500. As a result, you get more efficient use of fuel. This device, as you remember, allows you to control the throttle response, thereby giving you the opportunity to customize different driving styles. In short, another big plus in favor of the Sprint booster)))

2nd start button

PS Sorry for the quality of the photo, I shot on a hundred square meters)

In order to understand how to use a differential lock in certain driving situations, you need to understand the structure and operation of the vehicle’s transmission elements.

The Toyota Prado 90 uses a permanent all-wheel drive system with the installation of 3 differentials (2 inter-axle and one inter-axle).

A differential is a mechanical device that divides the torque of the input shaft between the output shafts.

First generation J70 19901996

Toyota Land Cruiser Prado semi long (LJ78G, Japan)

In April 1990, a new type, the Prado

, was introduced, with a redesigned front grille, front fenders, engine hood, and head lamps. At the same time, names like Land Cruiser and Land Cruiser II were still used in other parts of the world besides Japan. Prado means meadow or field in Portuguese. Despite a body-on-frame design making it highly capable off-road, the vehicle was marketed toward on-road use.

In Japan it came with electronic fuel injection and four speed automatic transmission. The 2.4 L turbocharged diesel engine with 71 kW (97 PS; 95 hp) and 240 N⋅m (177 lbf⋅ft) high torque unit was installed. The line up included 2-door and 4-door versions available in SX, LX or EX (4 door only) grades of trim.

The front suspension was changed to a “shock absorber through spring” design to improve handling. With the touch of a button you could switch between stages of absorber. The 22R petrol engine was upgraded to the 22R-E (electronic fuel injection) engine, the diesel engines were replaced by the 2.8 L (2776 cc) 3L engine, and the 2.4 L (2446 cc) 2L-T turbocharged diesel engine was replaced by the electronically injected 2L-TE turbocharged diesel engine. In 1993, the 22R-E petrol engine was replaced by the 2.7 L (2693 cc) 3RZ-FE petrol engine and the 2L-TE turbocharged diesel engine was replaced by the 3.0 L (2982 cc) 1KZ-T turbocharged diesel engine with aluminum cylinder head. The 1KZ-TE was able to reduce NO x

and soot. The dash board was replaced with a new design with minor changes to suspension, brakes, and trim details.

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