- General Motors has initiated a pilot program to repair or replace the 9T65 9-speed transmission that is found in a variety of its crossover models. GM 9-speed transmission Some owners of vehicles.
- Eaton Fuller 9 speed transmissions for sale with new, used and remanufactured transmissions in stock. We also stock genuine Eaton Fuller transmission parts including rebuild kits, gears, bearing kits, synchronizers, seal kits, bearings, counter shafts, bell housings, input shafts and more.
- 9G-Tronic is Mercedes-Benz's trademark name for its nine-speed automatic transmission, starting off with the W9A 700 (Wandler-9-Gang-Automatik bis 700 Nm Eingangsdrehmoment; converter-9-gear-automatic with 516 lb-ft maximum input torque; type 725.0) as core model.
This isn’t the only issue to strike nine-speed Honda and Acura models. In a series of service bulletins issued in September, the automaker warns of transmission end cover leaks on the 2015-2017 TLX, 2016-2017 MDX, 2016-2017 Pilot, and 2018 Honda Odyssey.
| ZF 9HP | |
|---|---|
| Overview | |
| Manufacturer | ZF Friedrichshafen |
| Production | 2013– |
| Assembly | Gray Court, South Carolina, United States |
| Body and chassis | |
| Class | 9-speed transverseautomatic transmission |
9HP is ZF Friedrichshafen AG's trademark name for its nine-speed automatic transmission models (9-speed transmission with Hydraulic converter and Planetary gearsets) for transverse engine applications, designed by ZF's subsidiary in Saarbrücken and built in Gray Court, South Carolina.[1] It is used in front-wheel drive and all-wheel drive vehicles.
Abstract[edit]
Land Rover and Jeep demonstrated the world's first nine-speed automatic transmissions for passenger cars at the 2013 Geneva Motor Show.[2] The 2014 Jeep Cherokee featured the world's first nine-speed automatic transmission for a passenger vehicle to market.
Specifications[edit]
Basic Concept[edit]
The 9HP is only 0.24 inches (6mm) longer than, and weighs 16.5 lbs (7.5 kg) less than, the outgoing six-speed transmission. The compact packaging is achieved by using a number of innovative design features: a new compact hydraulic vane-type pump, two patented dog clutches, which replace bulkier conventional clutch packs, and a nested gear set.[2] ZF claims that it is able to save an average of 16% in fuel compared with current 6-speed automatic transmissions. The gear ratio spread is 9.8364:1. The transmission has a torque range between 280 and 480 Nm.[1]
Technical Data[edit]
| Gear Teeth and Ratios | Planetary Gearset: Teeth | Count | Total | Avg. | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Model | Version | First Delivery | Sun 4 Ring 4 | Sun 3 Contact from google to iphone. Ring 3 | Sun 2 Ring 2 | Sun 1 Ring 1 | Brakes Clutches | Ratio Span | Gear Step | |
| Gear | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R |
| 9HP 28 9HP 48 | 280 Nm · 207 lb·ft 480 Nm · 354 lb·ft | 2013 2013 | 42 110 | 42 110 | 94 138 | 54 110 | 3[a] Visual for mac os. 3[b] | 9.8364 | 1.3308 | |
| Ratio | 4.7126 | 2.8468 | 1.9094 | 1.3818 | 1.0000 | 0.8076 | 0.6991 | 0.5802 | 0.4791 | - 3.8008 |
How It Works[edit]
An Animated Drive Line Schematic & A Rotational Speeds Nomogram
These ordinates are positioned on the abscissa in strict accordance with the proportions of the sun gears' teeth numbers relative to those of their rings. Consequently, the output ratios on the ordinate C4 (carrier of the last planetary gearset RS4) follows closely to those of the actual transmission. Note that elements A and F are labelled interchanged (cf. legend below).
9HP Nomogram[edit]
▶️ Interactive Nomogram
This interactive nomogram is a real geometric calculator exactly representing the rotational speeds of the transmission's 3x4 = 12 internal shafts for each of its 9 ratios (+ reverse), grouped according to their 5 permanent coupling on 4 joint ordinates and 3 independent ordinates. These ordinates are positioned on the abscissa in strict accordance with the proportions of the sun gears' teeth numbers relative to those of their rings. Consequently, the output ratios on the 6th ordinate (carrier of the fourth planetary gearset) follows closely those of the actual transmission. This advantageous geometric construction sets us free from Willis' famous and tedious formula, because all calculations are exclusively determined by lengths ratios, respectively teeth numbers on the abscissa for the 4 epicyclic ratios, and of rotational speeds on the 6th ordinate for the 10 gear ratios.
Rough terrain forklift for sale. Legend:
A : Dog Clutch (couples r1+s2 with input shaft)
B : Clutch (couples s1 with input shaft)
C : Brake (blocks s1 sun gear)
D : Brake (blocks r2 ring gear)
E : Clutch (couples c3+r4 with input shaft)
F : Dog Brake (blocks s3+s4 sun gears)
List of ZF 9HP variants[edit]
| Name | Weight | Max. gasoline torque (N·m) | Max. diesel torque (N·m) | Application examples |
|---|---|---|---|---|
| 9HP28 | 78 kg | 280 | 280 | |
| 9HP48 | 86 kg | 480 | 450 | Acura TLX, Acura MDX, Chrysler 200, Chrysler Pacifica (2017– gas versions only), Fiat Doblò, Fiat 500X, Honda Pilot, Honda Odyssey, Honda Passport, Jeep Cherokee (KL), Jeep Renegade, Ram ProMaster City, Range Rover Evoque, Land Rover Discovery Sport, Jaguar E-Pace |
Applications[edit]
Acura[edit]
- TLX (V6 models, 2015-2020)
- MDX (2016-2020, non-hybrid models)
Chrysler[edit]
- Chrysler Pacifica minivan (gasoline version)
FIAT[edit]
- Fiat Doblò 2015-on
- Fiat Ducato 2020
Opel/Vauxhall[edit]
- Opel Astra (2020; Diesel Engine)
Honda[edit]
- CR-V[3] (diesel, 2015-)
- Pilot (2016-2020 optional, 2021 standard on all trims)
- Avancier/UR-V (2016- 2.0L turbo)
- Odyssey (2018-19 [standard, 10-speed automatic optional])
- Honda Passport (2019- )
- Honda Ridgeline (2020- )
- Honda Civic (diesel, 2018- )
Jeep[edit]
Eaton 9 Speed Transmission
Ram Trucks[edit]
Land Rover[edit]
- Range Rover Evoque[2][4]
Jaguar[edit]
Nissan[edit]
- 2022–Nissan Pathfinder[5]
Technical Imperfections[edit]
The transmission has been problematic, as customers of Jeep, Chrysler, and Acura models equipped with the transmission have experienced problems in their vehicles regarding slow shifting and noisy operation. ZF has said this is due to software problems, not mechanical issues.[6]
Chrysler issued Technical Service Bulletins (TSB) for the 2014 Jeep Cherokee to 'fix rough and delayed gearshifts', and Acura has issued transmission-related recalls for the 2015 Acura TLX.[7][8]
9 Speed Transmission Shift Pattern
Production[edit]
Production of the 9HP started in 2013 at ZF's Gray Court facility in Laurens, South Carolina. 400,000 units are produced per year.[9]
Production of the 9HP for Fiat and Chrysler vehicles began in May 2013 at Indiana Transmission Plant I (ITPI), followed by Tipton Transmission Plant in Tipton County, Indiana in May 2014.[10]
Notes[edit]
External links[edit]
See also[edit]
References[edit]
- ^ ab'ZF Develops 9-Speed Automatic Transmission for Passenger Cars'.
- ^ abc'Land Rover uses the 9-speed automatic transmission by ZF'.
- ^'HONDA British-built CR-V refreshed for 2015'.
- ^'World Premiere in Geneva: Land Rover installs the world's first 9-speed automatic passenger car transmission from ZF'.
- ^https://www.caranddriver.com/news/a35341342/2022-nissan-pathfinder-revealed/
- ^'Holy Shift ZF 9 Speed Automatic Problems Mount Chrysler Releases Third Software Update for Jeep Cherokee'.
- ^'Short Shirt Jeep Cherokee 9 Speed Automatic Gets Second Update for Rough Shifting'.
- ^'Acura TLX Shifting Problems'.
- ^'Spotted: ZF testing the 9HP Hybrid transmission'.
- ^Chrysler Group Dedicates New Plant and Launches Nine-Speed Production in Tipton, Ind.