GEK±91584D, Vertical Drilling Motor, Type GE752
8.Screw a lifting bail, Fig. 14, on the drive end of the shaft.
9.Remove drive±end framehead bolts (30) and in- sert three jack screws in the threaded holes pro- vided in the framehead.
10.Line up the hoist cable with the centerline of the armature before engaging the hook in the lifting bail on the end of the shaft. Engage the hook and lift slightly. With sufficient strain on the hoist cable to take the weight of the armature off the framehead, jack the drive±end framehead loose, and lift the complete armature assembly out of the frame. DO NOT DAMAGE THE COMMUTA- TOR.
CAUTION: Special precautions should be taken to avoid damage to the armature end±windings, bearings or bearing fits, and the commutator when lifting the armature in the vertical position or turning the armature to a horizontal position.
11.Place the armature horizontally in an armature saddle for bearing disassembly.
12.At the drive end, remove the lubricating tube as- sembly (9, 33, 32 and 28) from the framehead.
13.Using puller tool (Part 6751547G4), pull the out- er sleeve (37) from the drive end of the shaft. The sleeve has tapped holes for applying the puller. Heat may be applied.
14.Remove bolts (34), and then remove outer bear- ing cap (36) and gasket (35).
15.Slide framehead (29) off the shaft together with the outer race and rollers of bearing (38). The in- ner race will remain on the shaft.
16.Pull the inner bearing race off the shaft with puller (Part 6751547G5).
17.Remove flinger (39) and inner bearing cap (40) with puller (Part 6751547G6) by inserting the four puller bolts into the tapped holes in inner bearing cap (40).
18.Press the outer bearing race and rollers from the framehead with an arbor press.
NOTE: Before pressing the drive±end outer bearing race out of the framehead, observe and record the number on the face of the race which is opposite the arrow on the framehead. After removal, mark the date (with electric pencil) un- der this number to indicate that this position has been used. Reassemble the bearing with another number opposite the arrow. If the bear- ing has not been previously marked, etch Nos. 1, 2, 3 and 4 (spaced 90 degrees apart) on the face of race with an electric pencil. Locate No. 1 opposite the arrow on the framehead and mark it with the date.
19.Install puller tool (Part 6751547G10) and pull spacer (5) from the commutator end of the shaft.
20.Install puller tool (Part 6751547G6) and pull bearing (4) and bearing housing (3) from the commutator end of the shaft.
21.Press the bearing from the framehead with an arbor press.
22.If applied, remove the nilos ring (4), Fig. 39, from the bearing and discard.
23.If applied, remove the seal ring (5) Fig. 39, from the sleeve and discard.
24.Install puller tool (Part 6751547G11) and pull sleeve (2) from the commutator end of the shaft.
25.If necessary to remove the commutator framehead (14), turn the frame commutator end up and remove bolts and lockwashers (13). Use bolts in the framehead jack±out holes to break the fit and remove.
CLEANING
The two recommended methods for cleaning are steam cleaning and vapor degreasing.
CAUTION: Do not use caustic soda solution on the armature or coiled frame.
Steam Cleaning
(Recommended for both insulated and metal parts)
1.Use steam in combination with a commercial non±caustic cleaner.
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