This brief technical description is intended to supply the necessary technical information on the components, construction and function of the automatic transmission.
ZF parts for automatic transmissions, ZF transmissions, ZF parts. Home; Contact Us; 4 Business; FAQ. Home 6 Speed Parts 6HP26/28/32.
- ZF6HP26 Remanufactured Valve Body BMW626 For use with and without 053 separator plate. While Sonnax makes every effort to ensure the accuracy of technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time.
- ZF BMW 6HP19, 6HP26, 6HP32 Automatic-Transmission Functional Descriptions. TRANSMISSION ZF BMW. This brief technical description is intended to supply the.
CONTENTS
- Introduction / note
- Contents
- Coloured sectioned diagram – 6HP19
- Key to coloured sectioned diagram – 6HP19
- Brief description – general
- Lepelletier planetary gear set
- — single-web planetary gear train
- — double planetary gear train
- Description of individual components
- — Hydrodynamic torque converter (operating principle )
- — 6HP26 torque converter (sectioned diagram) without / with torsional vibration damper
- — Converter lock-up clutch (2 GWK + torsional vibration damper)
- Hydraulic flow in converter (lock-up clutch (WK) open)
- Hydraulic flow in converter (WK closed)
- — Oil pump
- — Shift elements
- Clutches / brakes / sectioned drawings
- Clutch – sectioned drawings
- Action of shift elements
- — Shift overlap control
- — Parking lock
- mechanical version
- electrical version
- Transmission control area
- — Control elements and overview of shift system – E and M shift
- — Description of gears / power flow, 1st to 6th gear + Reverse
- — Hydraulic circuit diagram ( DIN ) (valve geometry, M / E shift)
- — Hydraulic and electronic (Mechatronik) control units
- General ( ESD protection)
- Sectioned diagrams of individual components (M and E shift)
- Brief description of valves
- Description of solenoid valves, pressure regulator
- Position of pressure unions
- Threaded connections on components
- Electronic module (electronic control unit)
- Mechatronik block circuit diagrams
- — Technical data – 6HP19, 6HP26, 6HP32
Language: English
Format: PDF
Pages: 92
Format: PDF
Pages: 92
ZF 6HP26 rear wheel drive can be identified by the 10 digit STUECKL number stamped into the case. Some parts are interchangeable with the Ford 6R80.
With a factory input torque rating of 600nm (443 ft lbs), some internal upgrades are required before being coupled to a higher output capacity motor. Exedy FDF have available a hi capacity stage 2 friction & steel kit that is rated for 1,000 rear wheel horsepower. Developed in the USA for the 6R80, the large friction plates for the A B C D clutch are increased in capacity from 22 plates to 27, some 6HP26 turbo models will require an extra 2 frictions and steels to increase capacity from 24 to 29. The small friction pack for the E clutch is increased in capacity from 7 plates to 9.
Zf 6hp26 Mechatronic
One of the most common faults that occur with the 6HP26 when the Boost is turned up, is a broken input shaft, due to the transmission leaving the factory at close to its nominated input rating. The aftermarket has designed billet shafts to overcome this problem and handle hi input torque. Another high wear part is the rear stator bushing that supports the input shaft overdrive drum.
Zf 6hp26 Solenoids
Apart from mechanical upgrades, hydraulic valve body and accumulator upgrades are a popular fix for these units. Accumulator failure is common and often overlooked. The following shows a new compared to a used and flattened accumulator that has lost the ability for effective hydraulic dampening. The Performance Accumulator shown corrects shift faults caused by a collapsed rubber.
Zf 6hp26 Pump Stator Bushing
Both Transgo and Sonnax offer valve body upgrade kits to resolve shift issues.
Zf 6hp26 Issues
The valve body seperator plate uses bonded rubber beading rather than paper gaskets to seal and direct oil to the correct channel casting. The beading must be complete with no breakage or deformaty. The plates are coded and like for like must be used on replacement. Always replace the valve body tube seals the case block seal and harness sleeve.