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Danucci - Porsche 911

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Project: Benchjob Transaxle Rebuild - 1991 Porsche 911 AWD (All Wheel Drive)
(Transaxle = Transmission and Differential - combined unit)

ZF 4HP22-HL (“HL” is for rear-end engines)

The 4HP22 is a 4-speed automatic transmission for passenger cars from ZF Friedrichshafen AG. Introduced in 1980, it was produced through 2003 and has been used in a variety of cars from BMW, Jaguar, Porsche, Land Rover, Maserati, Peugeot, and Volvo. For Porsche, it was used in the “HL” transaxle version from 1989 to 1993 in the Porsche 911 Carrera II 3.6L model.

Customer: Kent Danucci, Nebraska
VIN: WP0CB2967MS461877, 1991 Porsche 911 Carrera, red in color, 96,108 miles
Repair Order #: 15.040 / Woodhouse Porsche Omaha 402-592-1000 RO # 8041484

First Contact: 20 SEP 2007
Transmission arrived from Porsche Dealership on-site at Freddie’s: 17 OCT 2007
Rebuild completed and shipped back to Porsche Dealership in Nebraska: 08 NOV 2007

Below 236 pictures: dismantle & inspection, the cleaning and rebuilding process, and
attaching torque converter, packing, and shipping
CIMG2262 CIMG2261
CIMG2259 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2260 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2270 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2271 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2272 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2273 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2277 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2278 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2279 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2280 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2281 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2282 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2283 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2284 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2274 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2275 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2276 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2363 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2364 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2365
CIMG2367 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2368 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2371 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2372 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2375 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2376 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2393 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2394 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2377 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2378 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2379 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2380 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2381 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2383 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2384 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2385 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2386 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2387 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2388 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2389 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2390 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2391 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2395 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2396 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2397 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2398 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2399 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2400 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2401 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2402 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2403 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2404 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2405 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2406 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle

Cleaning & Rebuilding the Transaxle
(Transmission & Differential combined unit)

Includes various upgrades, such as “A” Clutch Modification from 5 clutches (shown just above, marked as ‘main cause for reported problem’) to 6 to avoid early distress wear, updated forward piston, and others.
CIMG2392 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2409 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2410 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2411 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2412 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2413 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2414 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2415 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2416 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2417 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2418 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2419 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2420 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2421 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2422 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2423 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2424 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2425 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2427 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2426 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2428 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2429 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2436 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Torque Converter CIMG2437 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Torque Converter
CIMG2439 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Torque Converter
CIMG2438 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Torque Converter
CIMG2441 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Torque Converter
CIMG2440 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Torque Converter
CIMG2442 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2443 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2444 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2745 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2746 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2747 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2749 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2748 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2750 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2751 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2753 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2754 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2756 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2755 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2757 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2758 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2759 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2760 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2762 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2761 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2763 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2764 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2775 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2776 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2778 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2777 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2779 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2780 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2781 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2782 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2783 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2784 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2785 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2786 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Valve Body
CIMG2787 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Valve Body CIMG2788 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Valve Body
CIMG2789 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Valve Body Solenoids CIMG2790 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Valve Body Solenoids
CIMG2791 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Valve Body Solenoids
CIMG2792 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Valve Body Solenoids
CIMG2793 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2794 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2795 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2796 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2797 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2801 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2802 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2803 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2804 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2814 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2815 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2820 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2816 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2817 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2818 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2819 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2825 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2832 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2838 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2843 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2844 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2845 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2847 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2846 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2848 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2849 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2852 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2869 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2870 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2871 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2872 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2887 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2888 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2889 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2909 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2910 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2911 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2416 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2873
CIMG2875

We were waiting for the outer O-ring and the inner seal for this part from the Porsche Wholesale Parts Supply to finish the rebuild.

Both arrived today, 05 NOV 2007.
CIMG2874
CIMG2916 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2955 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2956 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2957 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2958 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2967 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2960 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2959 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2963 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2964 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2962 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2961 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2965 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG2966 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG2999 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3005 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3006 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3007 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3008 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3009 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3010 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3011 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3012 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3013 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3014 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3015 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3016 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3017 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3018 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3019 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3020 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3021 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3022 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3028 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3029 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3030 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3031 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3032 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3033 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3036 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3037 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3038 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3039 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3040 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle
CIMG3041 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3042 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle

Packing & Shipment to Omaha, Nebraska:
CIMG3043 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle CIMG3044 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Torque Converter
CIMG3046 - Freddies Transmissions - ZF 4HP22 HL Porsche 911 Transaxle Torque Converter