Hale Q Series Muscle - Manual (Page 142)

 Packing and Mechanical Seal Maintenance
142 MUSCLE (Midship) Pumps Installation, Operation, and Maintenance Manual
p/n: 029-0020-63-0
17. Install new oil seal in rear bearing housing.
18. Place a new gasket over the mating surface of the mechanical seal housing and
rear bearing housing.
19. Properly seat 250-8240-00-0 roller bearing into rear bearing housing. Do not
install roller bearing race yet.
20. Install two 1/2”-13 UNC studs into the mechanical seal housing. Slide the rear
bearing housing over the impeller shaft making sure the oil seal aligns properly.
Align the bolt holes and your center punch marks.
IMPORTANT!
DO NOT ALLOW THE WEIGHT OF THE REAR BEARING HOUSING TO REST ON THE
OIL SEAL AS DAMAGE MAY RESULT RENDERING THE SEAL INOPERATIVE.
21. Apply Loctite and insert twelve 1/2”-13 screws to secure the rear bearing housing
to the seal housing. Evenly tighten the screws in a staggering (or criss-cross)
fashion and torque to 65 ft.-lbs. (88 N-m). (See Figure 8-3: “Qmax, Qmid, and
Qtwo Mechanical Seal Assembly Overview” on page 134.)
22. Install race of the 250-8240-00-0 roller bearing onto the impeller shaft between
shaft and bearing.
23. Insert small spacer against race.
24. Insert the gear key into the slot on the impeller shaft, then install the gear.
25. Insert large spacer on shaft.
26. Install the 250-8340-00-0 bearing and properly seat in the bearing housing.
27. Secure bearing plate to rear bearing housing with four 1/4" x 3/4" screws.
28. Place support washer on shaft and insert lock washer with outer teeth pointing
toward gearbox and inner tooth in small groove of shaft.
29. Apply Loctite to shaft threads and tighten lock nut on impeller shaft. Torque nut to
135 ft.-lbs. (183 N-m). Using a punch, bend one tooth on lock washer into one
groove on lock nut.
30. Re-install the gearbox - see heading “Installation - G Series” on page 112.
31. Operate the pump for about 15 minutes, and check the seal for leakage.