Transmission case sleeves, ZF 4HP22/24 EH valve body questions

[shogun]

there are following plate gaskets for 4HP22
1043 326 161 for M5 3,4
1043 326 162 518, 520, 528, 530, 533,535, 633, 635, 735 till 1985
1043 326 232 535, 635 AEGS
1043 326 253 525, 528, 535, 635, 735 from 1985

4HP24 1043 327 080 E32 750, E31 850

Looks like you need (double check it) 1043 326 253 $6.90 at Cobra Transmissions https://cobratransmission.com/zf4hp2...t-1043-326-253
In case their shipping cost to Canada is too expensive, maybe a forum member can buy for you and ship cheapest to Canada

[Cactuar]

Thanks Shogun. On Cobra's website the shipping is less expensive compared to their eBay store. So in total 35$ Canadian dollars for one gasket. It still feels like robbery but at least I'll have the part.

I went with https://cobratransmission.com/zf4hp2...et-551158327-1
It is the revision of the late model electronic gasket, according to this bulletin http://www.europeantransmission.com/...W/BMW.bull.htm.

I compared the gasket in the Cobra picture carefully against my gasket and it's the same, except for the updated holes.

[shogun]

Interesting list of Cobra Trans for 4HP22/24 made by Transtec and Precision International, good that they show pics of each one, so one can compare with his own one

ZF4HP22, ZF4HP24 Valve Body Gasket-1648171209 Part #: 69320EA , Upper Valve Body Gasket (Late Electronic)
ZF-4HP22, ZF-4HP24 Upper Valve Body Gasket (Hydraulic) (1043326253) (69320AA) Part #: IPN6-83203
ZF4HP22, ZF4HP24 Valve Body Gasket-1648171207 Part #: 69320E , (Early Electronic)
ZF4HP22 ZF4HP24 Valve Body Gasket Part #: IPN6-83201A , ZF4HP22 ZF4HP24 Valve Body Gasket (1043-326-232) (1982-2002)
ZF4HP22 ZF4HP24 Valve Body Gasket (1043-326-162) (1982-2002) , Part #: IPN6-83202
ZF4HP22 ZF4HP24 Valve Body Gasket (1043-326-050) (1982-2002) ,Part #: IPN6-83212

Plus the TI update from Europeantrans
BMW ZF 4HP22/24 1989-up Subject: Valve Body Gasket Change: There has been an update in the 1989 -up ZF 4HP22/24 valve body gasket. This change involves the addition of two new holes, and the revision of two existing holes.The new gasket # 1043-328080 will retrofit all previous 1998-up models .

more here E32-1992-750iL-4HP24-transmission-valve-body-refresh-gasket-problem https://www.bimmerforums.com/forum/s...gasket-problem

[Cactuar]

I will ask a question here as it's relevant to this thread.

When applying power to the solenoids, I can hear a distinct click, except on the MV5 "pressure" solenoid. Is this normal? The resistance is within spec at 6.5 ohms, but no clicking noise.

[whiskychaser]

MV5 is PWM. The others are just on or off. So I would say that is normal

Edit: All credit to Shogun for the full description in the link below:
https://www.bimmerforums.com/forum/s...nsmission-info

[Cactuar]

Thanks for the reassuring info whiskychaser. And of course thanks to Shogun for providing the knowledge.

I found a useful description of the PWM solenoids from https://www.sonnax.com/tech_resource...bracing-change

The ratio of on/off signal time at the solenoid is referred to as the duty cycle and ranges from 0 to 100%. This ratio of on-time during a cycle (in this case, 1/32 of a second) controls the leakage and alters the pressure. Pressure is inversely proportional to duty cycle. When fully energized, or 100% duty cycle, PWM pressure is at a minimum, resulting in minimum converter clutch apply pressure. When the normally open solenoid is at 0% duty cycle, full PWM feed (line) pressure flows through the solenoid and strokes the converter clutch regulator to allow maximum converter apply pressure. The duty cycle often is between these two extreme percentages, as the computer continuously monitors vehicle speed, gear range, throttle angle and other parameters to adjust the duty cycle and allow a controlled slip apply or release of the converter clutch.

So it's basically like a PWM computer fan (something I am more familiar with), where the speed can be adjusted almost infinitely.

[Annddrriy]

Transmission shift slow from 2nd gear to 3rd gear sometimes. If to put it a bit stronger spring to 2-3 shift valve in valve body it will work ? Thanks !

[shogun]

you can try it, but......I know someone which already tested with different kinds of springs at least 10 times and still is experimenting. Meanwhile he believes original is best + cleaning + polishing the pistons is necessary. Make sure that the solenoid is softly moving, no dirt in the solenoid, my buddy always polishes the solenoids when making valve body service and then uses special piston coating material for reduced friction

[Annddrriy]

Solenoid repair tool to disassemble and assemble it back on and well clean up inside.
Each solenoids tool has special size.png

[Annddrriy]

I have never clean solenoids inside. I have maybe 10 solenoids and my intuition tells me they are well dirty with friction plates material in hidden spots where you can not clean up without assemble it.

[Annddrriy]

No more 54 code after scanning engine ECU for code it is gone somehow. It is gone because when ignition is ON position and engine is running lock up solenoid is ON and when transmission shifts to 5th gear lock up solenoid is OFF. Before was opposite. When ignition is ON position and engine is running lock up solenoid is OFF and when transmission shifts to 5th gear lock up solenoid is ON.

[Annddrriy]

I have a question ! When car starts moving from last gear it is 5th gear the shift range switch is on Drive position. It is good to drive like that or no ?

[Annddrriy]

When you moving your car from 5th gear on 5 speed on manual transmission lots friction going on the clutch disc and same going on when automatic transmission starts moving from 5th gear then A and F clutches burn out fast.

[shogun]

5th gear? your 4HP 22 is a four-speed automatic transmission technical details Gear Teeth and Ratios https://en.wikipedia.org/wiki/ZF_4HP22_transmission

[Annddrriy]

When you set shift range switch to drive position car begins to move forward from low forward gear clutch A are engaged if is car moving forward that is first forward gear then next shift will be second gear that is 5 speed automatic transmission. When you set shift range switch to drive position car start moving forward if you think this is a neutral gear then next shift will be first gear then that is 4 speed automatic transmission. Do not skip forward low gear as first gear because the neutral isn’t gear. E32 730 M60B30 = 5HP18 That is 6 speed automatic transmission.

[shogun]

5 speed transmission on E32 is only used on E32 730 M60B30 = 5HP18 and and on 740 M60B40 = 5HP30, 6 cylinder and 12 cylinder engines have 4HP, see owners manual: Trans selector positions
5HP P R N D 4 3 2 , 4HP P R N D 3 2 1 see pages 21, 33, 34 http://www.e38.org/e32/E32_1992_Owne..._optimised.pdf

4HP22: when does the torque converter lock up? https://www.bimmerforums.com/forum/s...verter-lock-up

Specifications of the ZF4HP22/4HP24 Transmissions
Both the ZF4HP22 and ZFHP24 transmissions have 4 forward gears and lock-up torque converter clutches. They are both considered to be medium-rated transmissions, the 4HP22 can handle up to 400 Nm of torque, while the 4HP24 is rated to handle up to 450 Nm. With the right upgrades to the internals and clutch packs, the transmissions can handle even more torque and horsepower.
The 4HP22 came in two major models. The first early model was a hydraulically operated transmission, and the second model released in 1986 was electronically controlled by the use of solenoids.
While there are hydraulic and electronic versions of the 4HP22 transmission, the 4HP24 only came in an electronic version. Internally the parts are almost the same, but the ZF4HP24 has a different torque converter, which is stronger and designed for bigger and more powerful engines. The bellhousing is larger on the 4HP24 due to the larger torque converter.
Both the 4HP22 and 4HP24 have lockup torque converter clutches (TCCs). This helps improve performance and driving experience in a number of ways. When driving at cruising speeds, usually above 3 rd or 4th gear, locking up the TCC provides a direct drive from the engine to the drivetrain. This means that there won’t be any slippage and energy wasted in the torque converter, immediately leading to improvements in fuel consumption. Less slippage in the torque converter significantly reduces the heat generated and allows the vehicle to attain a higher top speed.
While not all the 4HP22s are electronically controlled, the electronically controlled version of the 4HP22 and the 4HP24 provides distinct advantages over the hydraulic version, because of their high degree of controllability, allowing shifts to be timed based on various engine parameters and inputs.

[Annddrriy]

4HP22EH does lock up the torque converter clutch when engine is running and when last gear shift on then lock up solenoid is OFF

[shogun]

4HP22EH does lock up the torque converter clutch when engine is running and when last gear shift on then lock up solenoid is OFF

read here : 4HP22: when does the torque converter lock up? https://www.bimmerforums.com/forum/s...verter-lock-up

Increased fuel economy through use of lock up torque converter. The TCM controls the operation of the Lock-Up Torque Converter which further increases economy.
Torque Converter Clutch: Since the efficiency of the torque converter at coupling speed is approximately 1.1 to 1, fuel economy is compromised. To offset this a torque converter clutch was added on EH controlled transmissions. The torque converter clutch locks the turbine to the converter housing. This creates a mechanical coupling with a ratio of 1:1. This can only be achieved at higher engine speeds, the torque converter clutch must be disengaged at low engine speeds to prevent stalling. There are two methods for controlling the torque converter clutch on BMW transmissions:
• A4S310/270R, 4HP22/24 EH, A5S310Z - These transmissions use an on/off control method to lock and unlock the torque converter. The Torque Converter Clutch is either completely engaged or disengaged. This method of engagement provides an abrupt sensation when the TCC is locking and unlocking. This abrupt sensation can be undesirable to some drivers.
• A5S560Z, A5S440Z, A5S325Z, GA6HP26Z,A5S360/390R - These transmissions use a gradual approach to TCC control. The TCC is gradually applied and released, this method reduces the abrupt feel of the on/off type TCC. The TCC solenoid is controlled by pulse width modulation. This allows fluid to be gradually introduced and released to the TCC.
The TCC is spring loaded to the engaged position. Pressurized fluid releases the TCC, when the pressurized fluid is released, the TCC is engaged. Depending on transmission application, the TCC can be engaged in 3rd, 4th or 5th gear. The TCC must be disengaged at low speeds to prevent stalling.
On page 29 see Lock-Up Torque Converter diagram https://www.ge39.com/files/electran1+2.pdf

[Annddrriy]

Same thing with 5 speed automatic transmission on 740i model with M60 engine that is 6 speed automatic transmission. If you skip count forward low gear clutch A are engaged than that will be 5 speed automatic transmission if you not skip forward low gear clutch A are engaged as a first low gear then that will be 6 speed automatic transmission.

[Annddrriy]

It's good fuel efficiency on ratio 1:1 on last gear. When ignition is ON position before engine starts that time lock up solenoid is ON and somehow makes a fluid flow through a bridge to bypass other way and when car moving forward even lock up solenoid is ON car not stalling and all gears shift well and last gear lock up solenoid is OFF at speed 95km RPM2000

[Annddrriy]

If lock up solenoid is ON when ignition is ON the TCU working right. The TCU has to turn lock up solenoid OFF when last gear is shifted.

[Riri1010]

Hi my ZF4HP22 trans does not go into forward gears.
Only reverse. I did a complete recon of the trans fluid is clean and new filter also new. Oil pump works but i can't get forward gears. I don't know what to do please help me if u have any suggestions thank you

[shogun]

most probably clutch a defective, worn
Fault: position D, no drive

possible cause:

dirty oil filter
clutch A defective
one way clutch 1st gear slips
wrong setting of gear change rods between control lever and gear box
https://www.bimmerforums.com/forum/s...-forward-gears
Power flow https://www.adelaideautomatics.com.a.../tranfund2.pdf
Problem: 'A' clutch burnout: transmission will not move the car forward or there is a long delay once the car is put into gear. http://bmwe32.masscom.net/moswald/zf...2_rebuild.html

[Annddrriy]

Disappeared E symbol and M symbol from the cluster even scanner not connected now. When scanner connected it removing out two program modes A and M those two modes E and M economy and motor load. The modes works but not visible on the cluster E and M. And sometimes message on dashboard ESD regelt. Solution needs to clean up CCM pins.

[shogun]

ESD regelt: your car does not have ESD. Resolder your CCM = check control module and all is fine. 16 pages info from a German E34 DIY info http://www.e34-welt.de/tips_tricks/R...0e34%20e32.pdf especially the resistors shown on page 9. ESD = Elektronisches Sperrdifferential = electronic slip differential. "ESD regelt" is a message that should not appear at all. there was never an ESD (= elektronisches Sperrdifferenzial = electronic limited slip differential) on this model. The CCM has some warnings included which actually never made it into series production.

Disappeared E symbol and M from cluster >> Console Removal Shifter console removal & switch cleaning, e32 & e34 automatic http://www.nmia.com/~dgnrg/page_13.htm
you might not need to open the switch, simply spray contact cleaner into it Photo-6a & Photo-6b & slide it back & forth rapidly a few dozen times. You may get by with doing this with the entire console intact & not have to disassemble anything at all. If you do need to open it to do a better cleaning job, pry the cover off with several small screwdrivers Photo-6c. Do this inside a plastic bag so small parts don't go flying across the garage. If only removing the A/M or E/M or S/E/M switch, it can be pried out without removing the console at all.
in case the gears disappear in the cluster, clean the trans selector switch or replace it , see my website http://twrite.org/shogunnew/otherMod...nsmission.html