Jeep CJ Repair & Service Manual 1945-1970

POINT TYPE IGNITION

BREAKER POINTS AND CONDENSER (See Figures 24, 25, 26 and 27)

When you replace a set of points, always replace the condenser at the same time.

When you change the point gap or dwell is changed, the ignition timing must be adjusted.

There are two ways to check the breaker point gap; it can be done with a feeler gauge or a dwell meter. Either way you set the amount of time that the points remain closed or open.

The time is measured in degrees of gap between the breaker points with a feeler gauge between the breaker points with a feeler gauge, you are setting the maximum amount the points will open when the rubbingblock on the points is on a high point of the distributor cam.

When you adjust the points with a dwell meter, you are adjusting the number of degrees that the points will remain closed before they start to open as a high point of the distributor cam approaches the rubbing block.

INSPECTION

1. Disconnect the high tension wire from the top of the distributor and the coil, and unsnap the distributor retaining caps.



2. Remove the distributor cap by prying off the spring clips on the L- or F-head, or by depressing and turning the hold down screws on the side of the cap on all other engines.



3. Remove the rotor from the distributor shaft by pulling it straight up. On the 6-225 engine, the rotor is attached to the distributor shaft by screws. Remove the screws to remove the rotor.



4. Examine the condition of the rotor. If it is cracked or the metal tip is excessively worn or burned, it should be replaced.



5. Pry open the contact points with a small pry tool and check the condition of the contacts. If they are excessively worn, burned, or pitted, they should be replaced. If the points are in good condition, adjust them. Then, install the rotor and distributor cap.

FRONT HUB AND WHEEL BEARINGS

ADJUSTMENT

NOTE: Sodium-based grease is not compatible with lithium-based grease. Read the package labels and be careful not to mix the two types. If there is any doubt as to the type of grease used, completely clean the old grease from the bearing and hub before replacing.

Before handling the bearings, there are a few things that you should remember to do and not to do.

Remember to DO the following:

• Remove all outside dirt from the housing before exposing the bearing.



• Treat a used bearing as gently as you would a new one.



• Work with clean tools in clean surroundings.



• Use clean, dry canvas gloves, or at least clean, dry hands.



• Clean solvents and flushing fluids are a must.



• Use clean paper when laying out the bearing to dry.



• Protect disassembled bearings from rust and dirt. Cover them up.



• Use clean rags to wipe bearings.



• Keep the bearings in oil-proof paper when they are to be stored or are not in use.



• Clean the inside of the housing before replacing the bearing.

Do NOT do the following:

• Don't work in dirty surroundings.



• Don't use dirty, chipped or damaged tools.



• Try not to work on wooden work benches or use wooden mallets.



• Don't handle bearings with dirty or moist hands.



• Do not use gasoline for cleaning; use a safe solvent.



• Do not spin-dry bearings with compressed air, otherwise they will be damaged.



• Do not spin dirty bearings.



• Avoid using cotton waste or dirty cloths to wipe bearings.



• Try not to scratch or nick bearing surfaces.



• Do not allow the bearing to come in contact with dirt or rust at any time.

• Tune-up and routine maintenance
• Engine and overhaul procedures
• Cooling, heating and air-conditioning systems
• Fuel and exhaust systems
• Engine electrical systems
• Emissions control systems
• Transmission
• Brakes
• Suspension and steering systems
• Body
• Chassis electrical system
• Wiring diagrams