Maintenance-Retiming - Walinga 510 Maintenance Manual

SECTION TWO:

MAINTENANCE-RETIMING

RETIMING
Aside from lubrication covered in Section One, the only maintenance procedure which may arise and
needs explanation in the manual is the retiming of WALINGA blowers. Originally, the impellers are
separated by pre-determined minute clearances which are designed into the unit. These clearances are
maintained by the timing gears. Any malfunction which disrupts this clearance must be corrected and the
unit must be retimed.
Retiming is necessary to reset impeller clearance after a blower has been jammed and the removal of the
foreign material does not stop the knocking or pounding during operation.
GEAR CASE REMOVAL
The Gear case is secured to the headplate with socket head cap screws. (Figure 9) Drain oil from gear
case and remove bolts. Lift gear case away from headplate. Timing gears and gear end bearings are now
exposed. (Figure 10) On completion of maintenance work, be certain that gear case is resorted to original
position, with the oil-fill port up. Replace gasket or use a paste-type gasket compound on the mating
surfaces. Always relubricate before starting.
INLET AND OUTLET HOUSING REMOVAL
WALINGA blowers are equipped with housing for channelling air into the transmission lines. To expose
the impeller chamber, remove the bolts connecting the housing to the impeller cases and headplates, and
remove. Before housing is installed, after completing internal work, inspect housing gasket. Replace if
necessary
Fig. 11
Fig. 9 Fig. 10
Blower Repair & Maintenance Manual #34-05198-6 v1.2 11.2014
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