1942 - 1947 Chevrolet Shop Manual



1-34

of the shaft match the internal serrations in the hub or cap section of the wiper arm, Fig. 75.		in the chain of one or both transmission and link assemblies may result in short or uneven stroking. To correct this condition loosen the hex nut at the bottom of the transmission and link, Fig. 77, (reached up under the instrument panel) and move the bolt and nut downward to take up all slack in the chain, then retighten the nut. BODY LUBRICATION Many of the annoy-

		ing squeaks and noises	Fig. 77-Windshield Wiper Transmission Link Chain
		that occur in closed bodies are due to neglecting a very important maintenance service which all bodies should receive regularly. The body lubrication chart, Fig. 78, gives the location of all lubrication points. The movable mechanical parts of the body are lubricated at the factory for easy operation and to eliminate squeaks caused by frictional contact. This lubrication should be maintained and replenished at periodic intervals. Most body lubrication points do not carry heavy loads like the chassis, and for this reason many of the points do not require as heavy nor as frequent lubrication as the chassis points. For body lubrication, a specific kind of lubricant, the one best suited for individual points, should be used. Knowing what to use and where to use it, together with a little care and cleanliness, will bring many returns in the satisfaction and pleasure of driving a car properly serviced. For exposed surfaces, such as door checks, door lock bolts, lock striker plates, dovetail bumper wedges, etc., a sparingly applied, thin film of clean, stainless grease or other similar lubricant will be as lasting and more economical than a large, messy smear of any lubricant carelessly or thoughtlessly applied. Where oil holes are provided in body parts a dripless oil can be safely used, but any lubricant should be used sparingly, and after application all excess should be carefully wiped off. The seat adjusters and seat track, ordinarily overlooked, should be lubricated with cup grease, graphite grease, or dripless oil—used sparingly. There are other points on bodies which may occasionally require lubrication and which are
Fig. 75-Windshield Wiper Shaft and Arm Cap Serrations Two different methods of locking the arm to the serrated shaft are used. To remove the type using the wire catch in the shaft recess, it is only necessary to trip the catch to free it from the recess at the back of the serrated section, then pull outward or the cap section of the arm.
	To remove the type using the flat spring, pull the blade end of the arm away from the glass while at the same time pulling outward on the hub section of the arm, Fig. 76. On this type, pulling the arm away from the glass causes the flat spring to be lifted from the recess in
	the shaft, Fig. 76.
Fig. 76-Removing Windshield Wiper Arm and Blade	To properly adjust the
stroke or sweep of the blades, first wet the windshield, then turn the wiper on to run at about half speed and note the sweep or travel. Then remove one or both wiper arms and change to whatever position may be necessary on the shaft to provide the proper stroke or sweep. In some cases excessive play or lost motion