One of the things in a Type 34 that often stops working is the electric clock. Usually the main problem is dirt and grime that has built up over the years. Electrically speaking, very few will fail. The first thing you'll want to do is make sure that the fuse leading to the clock is good, at the fuse box, and that the clock is properly grounded.
If the electrical connections are OK, then remove the plastic cover at the back of the clock. Inside you will see a lot of small gears and a copper covered cylinder, and the inside should be quite clean. If it's not, use contact cleaner but be careful not to get any on the faceplate because it will remove the white lettering.
You will also see a silver drum with a set of points (similar to the ignition points inside the distributor), which should also be clean. By rotating the drum one quarter turn the contact points should open and the counter balance wheel should move. Don't force it if it is not moving. If the gears are working then you have a workable clock.
Next, check the soldered connection at the bottom of the copper cylinder, and resolder if necessary.