So then, raise front of car on ramps and/or jack stands to allow you to comfortably locate, clean, and break open the level and drain plugs from below the car. Pros and cons to each, but I chose raise the front end only as there isn’t a rear jacking point on the Viggen to allow proper placement of the jack stands on the rear pinch rail locations. Two options here, namely a) raise and lower the front/left-front of the car several times throughout the procedure, or b) raise all four corners of the car once. Working with the level and drain plugs requires you to access from below, and thus you will need to raise the car. Once the fill plug is cracked open, just resnug it. Note:If you are simply unable to break open the fill plug, it is possible to use the level hole to pump fluid into the gearbox (that’s the only way to do it on some European cars actually), but its much easier to do from the fill hole on top. Clean/degrease the hex fitting in the head of the plug and around the plug as well. Open the hood and locate the fill plug on top of the gearbox, looking down from the top left side of the engine compartment. Otherwise, if you’re unable to break them open then maybe order some bigger/better hand tools or consider scheduling an appointment with your local independent Saab shop. If successful in breaking them open, you can a) get straight into it, or b) re-tighten/snug the plugs back up and start the work at a later point in time. I was (barely) able to get these cracked open with 3/8†drive tools, so should you. My suggestion is to break open all three plugs as a first or preliminary step, with the engine/tranny cold, just to make sure you have the tools and brawn to see it all the way through. Helpfully, they note that gearbox was refilled with the Red Line MTL so I’ll be sticking with that. I have some service records from the previous owner which details a full clutch service done by a reputable Indy shop in 2015 at 84,800 miles. The car is (was) nearly 20 years old and has clocked 110,000 miles. Work completed for your reference here was done on my recently purchased 2001 9-3 Viggen convertible, with the 2.3L 4-cylinder B235R engine mated to the FM55 401 manual 5-speed transmission. Gearbox endview - looking inboard from the left wheel These plugs have 8mm hex fittings, feature tapered threads that compress very tightly and seal with the help of a thread sealant. Breaking these plugs loose is a bear, by design apparently. There are three (3) plugs in the manual transmission that we’ll be working with. I'm not a believer in such fairy tales, so I’m gonna change it on the same recommended interval as engine coolant – 40k miles or 3 years, whichever comes first. Saab used synthetic gearbox fluid as factory fill and did not specify a change interval (ie they considered it a lifetime fluid). If you’re changing the fluid in your gearbox for the first time ever, and its a MY99-01 car, you may reference technical news bulletin TN-02-04-471 that essentially outlines a more elaborate “flush†process to switch over to this newer fluid. Saab switched over to MTF0063 specification fluid in its manual transmissions for model year 2002.
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