Harley davidson knucklehead 1940 1947 full service repair. Harley Davidson HD BIG TWINS KNUCKLEHEAD , FLATHEAD 1940 2019-02-14

Harley davidson knucklehead 1940 1947 full service repair Rating: 8,6/10 1380 reviews

Knucklehead Vintage Harley

harley davidson knucklehead 1940 1947 full service repair

However, it may be: grounded oil signal switch wire, faulty signal switch; or oil pump in bad order. Under dusty, wet or muddy conditions, oil chain daily with a very light oil. If engine starts hard : 1. To Adjust Rear Chain Remove rear axle nut and lock washer and loosen brake sleeve nut. Checking and Adjusting Clutch Control 1941 to 1947 Models To Identify Items, Refer to Illus.

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Harley Davidson HD BIG TWINS KNUCKLEHEAD , FLATHEAD 1940

harley davidson knucklehead 1940 1947 full service repair

If compressed more, clutch probably cannot be fully released. After removing chain from kerosene, hang it up for a time to allow kerosene to drain off. Particular attention should be given to engine mounting bolts, cylinder head bracket bolts or nuts, transmission mounting stud nuts, and wheel mounting socket screws. Shifter forks inside transmission sprung as a result of using too much force when shifting. Relay, or current and voltage regulator, not grounded.

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Harley Davidson HD BIG TWINS KNUCKLEHEAD , FLATHEAD 1940

harley davidson knucklehead 1940 1947 full service repair

Intermittent short circuit due to damaged wiring insulation. Check level of oil in transmission and add oil if needed. Observe whether there is binding or interference with shifter rod at any point in the shifting range; this is sometimes found as a result of bent rod. Then front chain and clutch sprocket assembly can be taken off. Clean and lubricate rear chain and check for broken rollers, loose pins or cracked side plates. If engine fails to start, it may be due to one or more of the following conditions : 1.

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Harley Davidson HD BIG TWINS KNUCKLEHEAD / FLATHEAD 1940

harley davidson knucklehead 1940 1947 full service repair

Piston rings badly worn or in bad condition other- wise. Sedi- ment and gummy matter accumulated in oil supply deposits in and around this orifice and gradually de- creases the oil supplied to chain. Note: Parts for installing rear chain oiler, or for replacement, are no longer available. Spark plugs in bad condition, or partially fouled. Turn screw to right for less free move- ment; left for more. After correct hand lever adjustment is made, tighten adjusting sleeve lock nut.

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Harley Davidson Knucklehead Flathead 1940

harley davidson knucklehead 1940 1947 full service repair

Footnote: Spring compressing collars 6 are not furnished but can be easily made. Package Truck — Rider and 1 50 lb. Just print out the section you need and throw it away when you are done! If oil is not returning, do not drive further before having the fault corrected; as engine is likely to be damaged. Distance between chain and rim should be checked at four equidistant points around rim, and if it hap- pens to be out of true sideways to any appreciable degree, this will have to be taken into consideration. To remove front or sidecar wheel brake shoes: To identify items, refer to Illus.

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1940

harley davidson knucklehead 1940 1947 full service repair

When chain is correctly ad- justed, securely tighten stud nuts and cap screw and recheck chain, as tightening stud nuts and cap screw sometimes changes chain adjustment. Discharged battery or loose or broken battery terminal connection. Turn screw to right for less free movement; left for more. Lubricating Rear Chain Applying to rear chain not lubricated with rear chain oiler: Under dry, hard surface road operation, apply engine oil at 750-mile intervals. Footnote: During 1947 season, spring tension adjusting nut locks 5 were eliminated and adjusting nuts 4 were superseded by sell locking nuts.

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Harley Davidson HD BIG TWINS KNUCKLEHEAD / FLATHEAD 1940

harley davidson knucklehead 1940 1947 full service repair

If condition of spark plugs is questionable, install new ones. To Adjust Front Chain Loosen the four stud nuts and one cap screw underneath transmission. See that terminals are clean and connections tight. The higher the compression ratio, the higher the octane rating of fuel required. Carburetor If carburetor floods : 1. Immerse for a short time in a pan of grease heat- ed to consistence of light engine oil.

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Reading : 1940 1947 Harley Davidson Knucklehead Service Repair

harley davidson knucklehead 1940 1947 full service repair

Occasionally, at time of servicing oil cup, complete cleaner should be removed from motorcycle and immersed for a time in a bucket of gasoline or kero- sene or solvent. Avoid running at or near top speed for long distances below 2000 miles. Clutch sprung disc too flat. Preceding three service jobs conclude what is con- sidered initial servicing. Check wheel mounting socket screws and tighten if needed. Oil pump improperly adjusted — oil pressure too high. Do not increase spring tension any more than actually required to make clutch hold.

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Knucklehead Vintage Harley

harley davidson knucklehead 1940 1947 full service repair

Lubricate wheel hubs at 1500 mile intervals as indicated on Lubrication Chart. Remove oil cup and 'baffle, thoroughly clean tliem and refill to indicated level with same grade of new oil as used in engine. En- gine must be kept well tuned, especially as concerns valve seating, good compression, spark plugs and ignnion timing. Road test motorcycle to check carburetor adjust- ment and all-around performance. Note that generator and oil pressure signal lights, in switch panel, go out when engine is running above idling speed. Releasing disc and spring assembly.

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