Hale 80FC - Manual (Page 87)

87 Pump Ends
p/n: 029-0020-61-0
Co rr ec tive M ain te n an ce
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6. Using Loctite, install and tighten the eight (8) 3/8”-16 screws EVENLY and in
a criss-cross pattern to assure an even seal. For sealant specifications, see
heading “Appendix C1: Lube and Sealant Specifications” on page 139.
Removing the Pump
WARNING !
THE LOWER AND UPPER PUMP BODY HALVES ARE BULKY AND HEAVY.
SUPPORT EACH HALF WITH THE PROPER LIFTING DEVICE. FAILURE TO DO
SO COULD RESULT IN SERIOUS PERSONAL INJURY, OR PROPERTY DAMAGE.
Pump Body (Halves)
The pump (volute) must be removed to service the impellers, mechanical seal
and the oil seal (located in the pump head). (See Figure 6a-1: “20FS Series,
Pump and Bearing Housing Overview” on page 86.)
1. Match mark the pump body halves and the pump head to assure easy and
accurate alignment during reassembly.
2. Remove the bearing housing - see heading “Bearing Housing” on page 85.
3. Position the lifting device to support the UPPER pump body half, then
remove the eight (8) 3/8”-16 screws and nuts securing the upper and lower
pump body (volute) halves together.
4. Remove the eight (8) 3/8”-16 screws holding the UPPER pump body to the
pump head, then remove the UPPER pump body and set safely aside.
5. Position the lifting device to support the LOWER pump body half, then
remove the eight (8) 3/8”-16 screws holding the lower pump body to the
pump head. Remove the LOWER pump body and set safely aside.
Impellers (2)
1. Before removing the impellers, note and/or match-mark the orientation of
the vanes and impeller hubs for proper reassembly.
Impellers MUST be installed in the same position. (See Figure 2-2: “Typical
20FS Series Pump System Overview” on page 23.) Also see Figure 6a-1:
“20FS Series, Pump and Bearing Housing Overview” on page 86.
2. With the pump body halves removed, hold the front impeller with a strap
wrench, then remove the 3/4”-16 impeller nut and washer.