1942 - 1947 Chevrolet Shop Manual



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	apt to become worn, causing oil leaks around the shaft. Such leaks can be corrected only by replacing the shock absorbers. BROKEN OR INOPERATIVE SHOCK ABSORBERS Broken or inoperative shock absorbers can readily be detected by lack of shock absorber resistance or too much resistance. Resistance may be checked as outlined under "To Check for Fluid." Too much resistance may be caused by broken internal parts, clogged valves or stuck pistons. No resistance may indicate lack of fluid, dirt holding valve open, broken cam or other broken internal parts. Shock absorber may be empty or low on fluid. Look for broken internal parts. Look for broken or cracked shock absorber body. Broken or inoperative shock absorbers should be repaired or replaced. TO LOCATE SHOCK ABSORBER NOISE When noise blamed on shock absorbers is encountered, there are many points to be checked to determine the exact cause of the noise. Check for worn or broken links or bushings; shock absorbers empty or low on fluid; stabilizer links and bushings: hand brake parts; loose tools in car; broken internal shock absorber parts; car spring shackles or covers; loose sheet metal parts; loose bumpers; loose shock absorber mounting, etc. All these can cause noise for which the shock absorbers are sometimes blamed. If noise is definitely determined to be caused by shock absorber, and cannot be corrected by external service, the unit should be removed for repair or replacement.	TO FILL WITH FLUID ONLY 1. Clean the shock absorber thoroughly using a stiff bristle brush and kerosene for the purpose. 2. With fluid injector, J-1026, fill shock absorber with G.M. Shock Insulating Fluid according to following instruction. To Fill Single-Acting Shock Absorbers 1. (a) If shock absorber is equipped with a filler plug as shown in Fig. 6, remove plug and fill shock absorber to capacity. (b) If shock absorber is not equipped with a filler plug, tilt unit to an angle of about 45° with arm end down. Remove valve nut with a heavy screwdriver, preferably of the offset type, Fig. 17. Remove relief valve, using & small hooked tool or bent wire as shown in Fig. 18. Fill shock absorber to capacity. 2. Replace filler plug, or relief valve and nut.


		Fig. 18—Removing Shock Aborber Relief Valve 3. Move arm up and down vigorously several times to work the fluid into the cylinder. 4. Remove plug or valve and add additional fluid to fill reservoir to capacity if necessary. 5. Withdraw a quantity of fluid equivalent to about two tablespoonfuls. 6. Replace filler plug, or valve and nut, using a new gasket.
	Fig. 17-Removing Shock Absorber Filler Plug