This resource is designed to help understand your early 928's serial number, determine it's production number, and request a build date. First, there are couple things you need to know:. United States/Canada (US) and Rest of World (RoW) vehicle identification numbers (VIN) were parallel, meaning their serial number (S/N) sequences were separate. Model/Year 1978 (MY78) is unique to all others because for three extra months RoW 928's were built before US production started (RoW - May 1977 and US - August 1977). The earliest VIN starts at S/N 0011 (both RoW & US), the first 10 numbers were not used.

1. Porsche 928 Workshop Manual
2. Porsche 928 Workshop Manuals

As outlined in Technical Bulletin (TSB) 84-01, early 928s up to September 1983 (up to VIN ES 92 860404) were fitted with aluminum lower ball-joints which need to be replaced with steel. This is important because the aluminum LBJ's will fatigue and fail. I'm amazed at how many early 928s I find still running their original aluminum ones!

Please check your early 928, easy to do with with a magnet - or use TSB 84-01 for pictorial reference. The TSB outlines more parts than absolutely needed. For safe replacement, here is what you need to service both sides:.

Porsche 928 Workshop Manual

Workshop Repair and Service Manuals porsche All Models Free Online. FACTORY SERVICE MANUALS. Porsche 928 Factory Manual - Table of Contents: Download. Porsche 928 Factory Manual - Volume 1: Download. Porsche 928 Factory Manual - Volume 7: Download. 928 WIRING DIAGRAMS. Porsche 928 Wiring Diagram - 1984: Download. Porsche Workshop Manual Download Porsche Boxter 986, 968, 911, Carrera 911, 997, 928, 944, 993, 996, Poses & Electronic Parts Catalogue.

(2) Lower ball-joint, steel - p/n 928 341 049 12. (2) Eccentric, camber/caster - p/n 928 341 466 00 You may reuse two of the original 26mm diameter camber eccentrics, p/n 928 341 466 01.

Porsche 928 Workshop Manuals

Also the brackets, only difference being the original studs are longer and will stick out a little more. Please note: Steel LBJ p/n 928 341 049 12 is thru MY86 - late model steel will not work for this service. Porsche Service Information Manuals for '78 (left) and '79 (right).

Describes the principal changes and innovations on the 928 for that model/year - what was changed and how does it work. Includes information on every detail of the new 4.5L water cooled engine, transmission specs and details, alignment specs, suspension details, body info, locking system operation, climate control description, relay and fuse assignment, warning system function, and wiring diagrams. Invaluable to any early 928 owner!

A change occurred in early MY79 where an oring groove was removed from the camshaft and added to the camshaft sleeve. As such, the oring size increased. Here's the quick details as outlined in TB-78-03:. Engine s/n 8280082 (manual) & 8289026 (auto). Early oring p/n 999 701 452 40, size 18.4 X 2.4mm.

Late oring p/n 999 701 592 40, size 23 X 2mm Note: late parts may have been retrofitted, so don't rely solely on your engine serial number. Either order both orings or inspect the camshaft before servicing.

When doing this service you will also need:. Large oring p/n 999 701 425 40. Oil galley seal p/n 928 105 184 00 Quantity 2 each Use assembly lube on all oring seals Set engine timing to TDC before pulling the distributor! Round Two of HVAC vacuum troubleshooting led to hours of reverse engineering to figure out what was Porsche thinking. What I found was the Porsche diagrams (Service Information booklet, 1978, pgs 130-131) were very inaccurate and lacking info. I'd suggest not using them.

Now I understand why early car owners have struggled to get their HVAC system functioning properly (after what I went thru, I'd say near impossible). The following information should help you get your system working properly. This should apply to both MY78 and 79 (however, I wasn't able to test a 79, so YMMV). Copyright © 2012-2018 928 Classics LLC.

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