W350 1 Ton Pickup 4WD V8-360 5.9L VIN 1 4-bbl (1988)
Removing Centrifugal Filter Fan
CENTRIFUGAL FILTER FAN
REMOVAL
1.
Loosen air pump adjustment bolt and remove drive belt.
2.
Remove air pump pulley bolts and remove air pump pulley.
3.
Insert a pair of needle nose pliers between the plastic filter fins and break the assembly from the hub. Be sure that no fragments fall into the
air pump inlet.
NOTE:
Do not try to remove the hub from the air pump, and do not pry between the filter fan and the air pump housing.
Installing Centrifugal Filter Fan
INSTALLATION
To install the filter fan, use the air pump pulley to draw it into position. Draw the fan down evenly by tightening the bolts evenly. As the filter fan is
being drawn into position, make sure that the outer edge of the fan draws into the air pump housing. A slight interference between the air pump housing
and the filter fan outer lip is normal and may cause a squeal noise upon initial operation. Do not attempt to install filter fan with a hammer or rubber
mallet as the filter is made out of plastic and is very brittle.
