4-19 Section 4 - Lubrication & Maintenance
Every 50 Hours
Operation 19
Clean the Cab Air Filter
The cab air filter (1) located on the underside of cab roof above the rear window.. It must be cleaned to keep the cab air system operating at maximum efficiency..
Note: In humid conditions, such as occur on most early mornings, do not switch on the blower prior to servicing the filter. Damp particles drawn into the filter may be difficult to remove without washing.
Note: The filter is made of specially treated paper with a rubber sealing strip bonded to the upper surface. Do not damage the element during removal.
To remove the cab air filter, unscrew the knob (2).. This will release the filter frame (3) allowing it to swing down sufficiently to remove the filter.. Remove the filter element and check the seal (4) around it’s perimeter for nicks or cracks.. Replace the element if any damage is found..
The filter element may be cleaned using either method A or B depending on the condition of the element..
Method A
Clean the element with compressed air not exceeding 2 bar (30 PSI).. Hold the nozzle at least 300mm (12") from the filter to prevent damage to the paper pleats.. Direct the compressed air through the filter opposite the normal air flow..
WARNING: Wear eye protection and a face mask when carrying out this operation.
Method B
1.Soak the filter for 15 minutes in warm water containing a mild detergent..
2.Rinse the filter with running water below 1..4 bar (20 PSI)..
3.Shake off excess water and allow to air dry..
IMPORTANT: Do not attempt to dry the filter with heat or compressed air and do not install until thoroughly dry as the filter may rupture.. It is recommended that a new filter is installed at this service and the washed one put aside for installation at a subsequent service.. Store the spare filter in a dry place and wrap it to prevent dust contamination or damage..
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