This manual contains the exact work procedure to repair transmission 4 HP 22. This repair manual provides instructions, installation instructions, maintenance manuals and other service information for transmission ZF 4HP22. This manual contains detailed drawings and diagrams that help you to get a detailed description of all systems of transmission ZF. This manual comes in PDF. To view the information you must have the program Adobe Reader. General Notes 1.1. Picture of Transmission 1.2. Power Flow Schedule 1.4. Adjustment Data 1.5. Tightening Torques 1.6. Fault Finding Table 1.7. Checking of Transmission 1.8. Special Tools 2. Disassembling 2.1. Disassembling After Sequence 2.2. 4th Gear Assembly 2.3. Planetary Set With Web Shaft And Brakes C', C and D 2.4. Clutch B 2.5. Clutch A 2.6. Bellhousing With Intermediate Plate and Pump 2.7. Transmission Extention and Centrifugal Governor 2.8. Transmission Case With Shift Selection 3. Atlanta rhythm section so into you. Results 1 - 48 of 180 - LAND ROVER DISCOVERY ZF4HP22 TRANSMISSION REBUILD KIT 1994. Transmission or M.T. Which stands for Manual Transaxle. O Service Repair Operations. An index can be found at the rear of the manual. ZF Automatic Transmissions Service Manual Valve Reverse Gear. ![]() Assembly 3.1. Transmission Case With Selector and Park 3.2. Clutch E 3.4. Mounting and Assembly of 4th Gear Complete 3.5. Park Mechanism 3.6. Planetary Set 4 th Gear 3.7. Web Shaft With Planetary Set 3.8. Cylinder C-D 3.9. Brake D with Freewheel 1. Brake C', C 3.11. Clutch B 3.12. Clutch A 3.13. Pump Intermediate Plate and Bell Housing 3.14. Governor and Transmission Extension 3.15. Valve Body, Oil Pan and Torque Convertor Screenshots for ZF 4HP22 Transmission Repair Manual PDF. • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Gearbox failure and 10 miles in reverse I knew the gearbox was on it's way - the classic symptom of the 4HP22 failing is 'hanging in first gear when cold'. That means that the governor is getting clogged with debris from a clutch. The other symptom was rising engine revs with no increase in road speed. So I knew it was getting bad The Landie was off the road, so I decided to finish the Landie before the van broke. This necessitated a trip to Northampton (I live in Huntingdon) to pick up the cylinder heads. The slipping was getting worse & worse in Northampton, but I managed to get back as far as Thrapston. I decided that the best way was not on the dual carriageway, but I thought that maybe I could limp along the back roads, so I headed to Titchmarsh. Titchmarsh was touch and go, and finally on the road towards Clopton all forward motion stopped. The engine revved, but the van would not budge. Then I discovered that reverse gear was still good. So I set off in reverse. I passed through Clopton, turning right for Old Weston. I whizzed along (with the traffic, just the van facing the wrong way), towards Old Weston, then turned left towards Alconbury. I reached Alconbury Weston, turned right and then left into Alconbury. Over the narrow bridge, turn left towards the Al. Under the A1, up the hill to the BP truckstop. Around the three roundabouts, and towards Little Stukeley. Nearly home now. Naturally the local constabulary turned up at this point and insisted that my joy ride should finish there!!! ![]() By my calculations that's about 10 miles in reverse. Took me about 1 1/2 hours, and I was nearly home Gearbox rebuild There's very little info on the web regarding rebuilding automatic transmissions, and nothing on the ZF4HP22. I called Ashcroft Transmissions in Luton as they specialise in the Range Rover version of the 4HP22 (which is the same as this one apart from the output shaft), and got told that they weren't interested. A nice place in London whose name I forget quoted £800 fitted which was OK But I decided to rebuild it myself I obtained 3 manuals, the Land Rover manual, the Jaguar manual and the ATSG manual. Between them they covered it The man at ZF also put me in touch with for spares; they were brilliant. When I had finished my stripdown and identified the spares, they shipped them immediately and I had them less than 24 hours later. Highly recommended. The stripdown The gearbox out of the vehicle Remove the bolts to remove the bellhousing, but leave the pump in place. Then remove the tailcone (note the output flange comes off with the tailcone on this version - the car versions are different in this respect) I knew the valve body was OK and that the fault was in the A clutch, so I removed the valve body and put it to one side. You need to remove the little rubber washers and springs (8 or 9 of them) in the fluid passages between the valve body and the gearsets otherwise you can't get the gearsets out. Then remove the rest of the bolts at the bellhousing end and take stuff out It's worth trying to keep everything in the right order as there's a lot of bits! And you'll end up with the empty casting.
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