FAN GP-SUCTION 3520681 - Caterpillar

Wiring Diagrams
Spark Plugs
Removing and Inspecting Spark Plugs
1. Disconnect wire and remove rubber cap from each transformer terminal. Do not pull on the ignition wire; the wire may break. 2. Remove rubber cap from each spark plug well; slide cap up wire.3. Disconnect wire from spark plug terminal. Do not pull wire. 4. Remove the spark plug from each cylinder. 5. Examine the condition of each spark plug. Clean if necessary. 6. Check and set spark plug gap. Correct gap is .013 inch [0.3 mm]. Check both terminals on each spark plug. 7. Install spark plugs. Tighten to 18 lb.ft. (24 N m).
Do not overtighten
8. Connect spark plug wire. Slide rubber cap down wire and cover spark plug well.9. Connect ignition wire to transformer terminal. Install rubber cap over terminal.Power Coupling System
Flywheel And/Or Front Power Take-Off Clutches
Checking Clutch Adjustment
While engaging the clutch to pick up the load, check the clutch adjustment. The clutch should engage with a hard push and distinct snap. If engagement is "soft", adjust the clutch.Adjusting Clutch
1. Stop the engine and remove the clutch inspection cover. 2. Turn the clutch until the lock pin, engaged in the locking ring, is visible.3. Pull the lock pin out and rotate the locking ring clockwise until the lock pin pops into the next notch. 4. Test the clutch adjustment. If still too "soft", rotate the ring to the next notch. If the adjustment is too tight-turn the ring back one notch.5. Install the cover.Lubricating Clutch
Lubricate the clutch bearings, 1 or 2 strokes each fitting.1. Lubricate shift-collar and shaft; 1 fitting at top-left of center. 2. Lubricate the shaft bearing 1 fitting on top-rear of housing.3. Lubricate the shift lever bearings; 1 fitting on each side of the clutch housing.4. Lubricate pilot bearing; 1 fitting at the end of shaft. Electric Set Generator
There are two types of Generators: SR4 and SRCR. To determine which generator you have, see the serial number stamped on the generator nameplate. The first group of numbers will be followed by either a "B", or a "T"; "B" designates a SR4 Generator, "T" designates a SRCR Generator. For a complete explanation of the serial number, see the ELECTRIC SET OPERATION INSTRUCTIONS.The SR4 Generator is a brushless type generator. The SRCR Generator uses slip rings and brushes. Periodically inspect the brushes and/or slip rings for wear and appearance.If the electric set generator is not of Caterpillar design, see the manufacturer's instructions for the required lubrication and maintenance procedures.Inspecting Slip Ring (SRCR Generators only)
1. Remove the two lower panels from the rear of the generator housing.2. Inspect the slip ring color. The slip ring color may be shiny copper to straw, or chocolate to black, but the color must be uniform to indicate satisfactory operation.If the ring is basically one of the above shades, but contains blotches of green, blue or black, clean the ring with an electrical cleaning solvent.
Do not use gasoline or carbon tetrachloride. Both solvents will dissolve insulation. The vapors from carbon tetrachloride can be