Radiator and Fan Service
Radiator
Clean the radiator every 1,000 operating hours. Blow compressed air from the outside of the coil in toward the fan to clean coil (the direction opposite the normal air flow). Inspect the coil and fins for damage and repair if necessary.
- Notice
- Equipment Damage
- The air pressure should not be high enough to damage coil fins.
Radiator Cooling Fan
The radiator cooling fan on SG units are driven directly off of the engine.
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SGCO - The fan is driven off of the coolant pump pulley.
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SGUM - The fan is driven directly off of the crankshaft pulley.
| 1. | SGCO Fan Studs (4) | 6. | SGUM Hub to Spacer Bolts (4) |
| 2. | SGCO Fan Spacer | 7. | SGUM Fan Hub |
| 3. | SGCO Spacer Nuts (4) | 8. | SGUM Fan Spacer |
| 4. | Fan Assembly | 9. | SGUM Hub to Crankshaft Bolts (4) |
| 5. | Fan to Spacer Mounting Bolts (4) |
Fan and Shroud Adjustment
SGCO and SGUM Units: The fan depth into the shroud is not adjustable.
SGCO Unit: The fan shroud mounting points are slotted to allow for adjustment. If the fan or shroud is removed or replaced, adjust the shroud positioning so the fan is centered in the shroud opening. The distance from each fan blade tip to the shroud must be equal around the circumference of the opening to allow proper cooling. Adjust the shroud as needed so the fan is centered in the opening.
SGUM Unit: The fan shroud is mounted directly to the radiator and is not adjustable.