Gardner Denver LEGEND P Series, Operating And Service Manual

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SB-7-622 Page 23
NOTICE
If backlash is above the specified limit, the gears are not necessarily unusable. Excessive play
could be caused by worn bearings.
5. If timing gears appear to be reusable, match mark timing gear tooth mesh by making small punch marks on
the ends of meshing gear teeth with a pin punch and hammer (see FIGURE 6-2, page 25). The impeller tip to
valley (throat) and the case to headplates should also be match marked to facilitate blower reassembly.
6. Remove each timing hub (39) and the timing gear (9) as a complete assembly with a gear puller. (See Figure
6-3). Do not remove timing bolts (38) or threaded taper pins (36), unless the gears or hubs will be replaced.
NOTICE
Blowers with mechanical seals have two wavy washers (28) located between the bearings and the
cover on the drive end.
7. Remove the socket head cap screws (30) from the drive end bearing cover (29) and remove the cover. Drive
shaft oil seal (31) should come free when cover is removed.
FIGURE 6- 5
8. Remove mounting foot (17) from the drive headplate (24) by removing the capscrews (16).
9. Remove the capscrews (21) which secure the drive headplate (24) to the impeller case (22).
10. Using the fabricated puller plate shown on page 23, bolt to the drive headplate using the tapped holes used
to secure the drive cover.
11. Install a gear puller to each shaft and attach puller arms to the plate. Turn each puller only half a revolution
at a time keeping the advance of the shafts as uniform as possible (see Figure 6-4). After the headplate has been
removed, detach the puller plate.
FIGURE 6- 3
FIGURE 6- 4