U660E Transmission parts, repair guidelines, problems, manuals
U661E
Transmission general data
| Number of gears | Transmission Type | Drive | ATF (full capacity) L | ATF (change) L | ATF type |
|---|---|---|---|---|---|
| 6 | AT | FWD/AWD | 6,5 | 2,8 | Toyota Type WS |
The 6-speed automatic transmission U660E designed by Aisin in 2006 for FWD cars Lexus ES350, as well as for the luxury 6-cylinder models (Camry, RAV4, Avensis) for 3.5 lit. The unit was paired with the V6 engine.The U660F unit is intended for AWD crossovers and sedans. The U660 unit is a competitor of ZF 6HP26. In 2009, the U660 unit was complemented by U760E model cured from "common problems" and intened for a bit lower torque from the engine (up to 2.7 l). After some period of time the U761E sub-modification was released for less powerful engines with 2.0-liter capacity. Repair parts for this gearbox are the same as for U760. Among the market competitors of the U760 unit, specialists point out the ZF 6HP21 unit.
What are you looking for?
Overhaul Kit | Friction Kit | Friction | Steel Plate | Steel Kit | Band | Solenoid Kit | Solenoid EPC | Solenoid TCC | Pump | Shaft | Drum | Valve body | Torque converter | Hub | Piston | Piston Kit | Planetary Gear | Filter | Gasket | Bushing | Seal | Bearing | Pressure Plate | Stator | Differential | Retainer | Inhibitor Switch | Instruction manual | TOOLS & ACCESORIES | Sensor
Which cars run with this gearbox?
| Brand | Model | Year | Type | Engine |
|---|---|---|---|---|
| LEXUS | ES | 06-16 | 6 SP FWD | L4 2.0L 2.5L V6 3.5L |
| LEXUS | RX | 08-15 | 6 SP F/4WD | V6 3.5L |
| Lotus | ELISE | 12-15 | 6 SP RWD | V6 3.5L |
| Lotus | EVORA | 10-16 | 6 SP RWD | V6 3.5L |
| Toyota | ALPHARD | 08-14 | 6 SP F/4WD | V6 3.5L |
| Toyota | AVALON | 07-16 | 6 SP FWD | V6 3.5L |
| Toyota | AVENSIS | 08-16 | 6 SP FWD | L4 2.2L |
| Toyota | BLADE | 08-12 | 6 SP FWD | V6 3.5L |
| Toyota | CAMRY | 06-16 | 6 SP FWD | L4 2.0L 2.5L V6 3.5L |
| Toyota | ESTIMA | 06-16 | 6 SP F/4WD | V6 3.5L |
| Toyota | HIGHLANDER | 09-16 | 6 SP F/4WD | L4 2.0L V6 3.5L |
| Toyota | MARK X ZIO | 07-13 | 6 SP F/4WD | V6 3.5L |
| Toyota | RAV4 | 12-16 | 6 SP F/4WD | L4 2.0L 2.2L |
| Toyota | SIENNA | 10-16 | 6 SP F/4WD | V6 3.5L |
| Toyota | VANGUARD | 11 | 6 SP F/4WD | V6 3.5L |
| Toyota | VENZA | 08-16 | 6 SP F/4WD | V6 3.5L |
| Toyota | VERSO | 09-16 | 6 SP FWD | L4 1.6L 2.2L |
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- Bearings, brg, Mainbearing
- Cover Bolt, Cover Bolts, Mounting Bolt, Mounting Bolts, Pan Bolt, Pan Bolts, stud, studs, Split Pin
- Case Covers, Cover, Dust Cover,
- Filters, Filter Cartridges, Filter Cartridge, Oil Pan Filter, Inlet, Filter Kit
- Flanges, Drum Flanges, Drum Flange, Flange Yokes, Flange Yoke, Flange Kit, Rear Flange Kit, Yoke, Slip Yoke, Yokes, Flange
- Friction Discs, Frictions, fric, Friction Disc, Friction, Friction Plate, Friction Ring, fric., Clutch Plate, Friction Lining
- Friction kits, friction pack, friction set, High Energy Clutch Friction Module, Friction clutch
- Gasket Pan, Pan Gaskets, Pan gasket, Filter Gasket,Filter Gaskets
- Hubs, Hub Insert
- Impellers
- Impeller Hubs
- Mounting Pad, Mounting Ring, Transmission Mount, Transmission Mounts, Mounting Rings, Mounting Pads
- o-ring, o ring, 0ring, 0-ring, 0 ring, ORing, Ring, O-Rings, o-ring, O'Ring
- ohk, OHK kit, Overhauls, mok, Overhaul kit, Masterkit, Master kit, Master Overhaul, Repair package, Overhaul, Rebuild kit, Master Rebuild, Super Rebuild Bundle, Banner Kit, SUPER KIT, SUPERIOR KIT
- Pans, Crankcase, Oil Pan
- Pistons, Apply Piston, Pack Piston, High Piston, Damper Piston, Piston Damper, Piston Plate, Interm. Servo Pist, Piston Seals, Piston Seal Ring, Piston Seal Rings, Piston Seal, Piston Cover, Piston Covers, Rear Servo, servo piston, Piston Retainer, Piston Retainers, Servo kit, Super Servo, servo, Shift Pison
- Piston Kits, Piston Complete, Piston part, Piston Sets, Piston Set
- Planetary Gears, Planetary Gear Set, Planetary Gear Sets, Planet, Planetary Assembly, Planetary Component, Reaction Carrier, Planet
- Pumps, Rotor, Vane, Vanes, Kit Pump Vane/Ring
- Repair Kit, Kit Case Repair,
- Seals, Metal clad seal, Lip Seals, Connector Hole Seal, Lip Seal, Main Seal, Radial Lip Seal, Main Seal, Manual Seal, Oil Feed Seal, Side Cover Seal, Seal Cooler, Seal Oil Cooler, Case Seal
- Reprogramming Kit, Kit Reprogram, Reprogram Competition, Kit Shift, Kit Auto Shift, Kit Stick Shift, Shift Correction Kit
- solenoid, Shift Solenoid, Kickdown Solenoid, Control Solenoid Support, Solenoid Retainer, Interlock Solenoid, Solenoid Switch
- EPC, Pressure Solenoid, Pressure Control Solenoid, Pressure Solenoid, PWM solenoid, Pressure Regulator Solenoid
- spragg, Sprags, Mechanical Diode, Sprag Assembly, Sprag Cartridge, One Way Clutches, One Way Clutch, Roller Clutches, Roller Clutch, Low/Rev Diode, Retaining Plates, Retaining Plate, Accordion Spring, OWC
- Steel Kits, Steel Set Kit, Steel Clutch Plate Kit, Steel kit, clutch steel, clutch steels, Steel set, steel pack, module kit, Steel Plate Clutch Kit, Steel Plate Kit, Steel Plate Module, Steel Plate Set, Steel Module
- Steel Plates, steel, Steels, steel disk
- Tool kits, Alignments, Alignment, Reamers, Reamer, Tool kit, Tool, Pressure Gauge, Clutch Aligning Tool, Clutch Removal Tool, Clutch Tool Supplement, Kit Installer, Air Test Plate, ADJUSTMENT TOOL, Thread Tap, Remover
- converter, t.converter,
- Turbines
- Throttle Valve, Timing Valve, Operating, Relief Valve, Safety Valve, Control Valve, AFL Valve, Limit Valve, Actuator Feed Limit Valve, AFL Valve
- VB plate, Valve body plates, Valve body plate, ValveBody, V/Body, valve-body, v body, v-body, v/b, Orifice, Hydraulic control unit, HCU
- Oversized Valve, flow control, Oversized Safety, Oversized, Flow Control, Valve pump flow control, Pump flow control valve, Oversized Pump Flow Control
- Sonnax Zip Kit
Technical issues and repair guidelines
Friction lining of the lockup unit is not the most crucial problem for driving, but it is critical for the “health” of this transmission. The torque converter is the main "contaminator" and the source of all problems of clogged valve body and solenoids. This gearbox usually covers 200 thousand kilometers, but the driver can significantly cut its service life by an aggressive driving style. Almost all major repairs of this gearbox include the torque converter repair. The torque converter repair with replacement of worn-out friction lining every 150-250 thousand kilometers (depending on the driving style) allows saving of some money on the valve body replacement.
According to judgement of experts, the most common problem of the U660E unit is related to the main housing bearing, which is attached to a “weak” circlip. The drum of Direct package is one more problem of this gearbox. Many gearboxes with short mileages (only70-100 thousand kilometers) were handed in for the overhaul and replacement of burnt clutch cover С1-С2 - Drum (Direct) in the assembled condition. Another issue is related to wear-out and burning of frictions in braking packages B1-B3 (gears 2 and 6). The most frequently replaced component is a set of frictions in the package C1/C2 (gears 1-4). Generally the whole set of friction components is replaced.
Valve body and solenoids in U660E
The most common problem for all 6-speed automatic gearboxes is the worn valve body. The problem with the valve body, which operated with damaged torque converter lockup and contaminated ATF, is related to wear-out or slagging of channels and plunger-valves of the valve body. The most frequently replaced component in the electrical part is the selector position plate with temperature sensors. The overheated temperature sensor is often considered to be the reason of the valve body malfunction. The first reason of early issues with electrical components (before covering 200 thousand kilometers) is the automatic transmission overheating. Almost each overhaul of overheated U660E transmission is accompanied with the order of pistons kit. The list of spare parts that may be damaged in this sophisticated gearbox as a result of neglected bearing vibrations is quite large (crown gear, sun gear, planetary gears, differential, pistons).
It should be taken into account, that all abovementioned problems with the U660 unit are common for very old or quite worn-out automatics. A high percentage of cars equipped with U660 serve before covering standard 200 thousand kilometers (in many cases even longer) without any repairs under the condition of timely ATF change and filter replacement.
Instruction manuals and useful links Suggest your link
| Link type | Source | Description |
|---|---|---|
| www.at-manuals.com | Repair manual U660E/F | |
| www.at-manuals.com | Scheme U660E/F | |
| www | www.at-manuals.com | Check Balls U660E |
| www | www.at-manuals.com | Stall test U660E |
| Sonnax | Valve Body Layout U660E/F, U760E/F |