HP (Hewlett-Packard) 2878 Water Pump User Manual


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Reference
Number Description Part Number Quantity
Figure 1 – Repair Parts Illustration
shim in addition to those removed originally.
2. For motor replacement, add two (2) shims in addition to shims removed during
disassembly.
3. Reassemble pump as described in steps 6 and 7. (See INSTALLATION OF NEW
SEAL section.)
IMPORTANT: Insure that casing is snugly in place and check shaft to make sure it is
turning freely (use screwdriver slot in the motor to turn shaft). If it turns freely, check to
insure that adapter (Ref. No. 7) and casing are fitted metal -to- metal where
they meet on outside. If they are not metal-
to-metal, tighten fasteners (Ref. No. 4) and
recheck shaft for free turning. Tighten
carefully, turning shaft while tightening so
that motor bearings are not damaged in the
event that too many shims were installed. If
shaft seizes before fasteners are completely
tight, disassembly pump and remove one (1)
shim and repeat reassembly.
For Repair Parts, contact dealer where pump was purchased.
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Repair Parts List
1 Motor: Model 2874-95 – 3 HP, 3 Phase 1626-043-00 1
Model 2875-95 – 5 HP, 3 Phase 1626-044-00 1
Model 2876-95 – 7.5 HP, 3 Phase 1626-045-00 1
Model 2877-95 – 3 HP, 1 Phase 1626-082-00 1
Model 2878-95 – 5 HP, 1 Phase 1626-078-00 1
2 Impeller Key 1471-030-00 1
3 Slinger Washer 1470-093-00 1
4 3/8"-16 UNC x 1-1/4" Grade 5 Hex Hd Cap Screw * 4
5 3/8" Split Lock Washer * 8
6 3/8" Flat Washer * 12
7 Adapter 1470-001-02 1
8 O-Ring and Flapper Valve Kit, Buna (includes Ref. 14 & 15) 2870-301-91 1
8 O-Ring and Flapper Valve Kit, Viton (Includes Ref. 14 & 15) 2870-301-92 Optional
9 Shaft Sleeve S.S. 1472-000-00 1
10 & 11 ^Seal Assembly Buna (standard) 1640-163-90 1
10 & 11 ^Seal Assembly Viton (optional) 1640-163-91 1
12 Impeller Shim Set (one each 0.010", 0.020", 0.030") 1664-000-90 1
13 Impeller Kit, (Incl. 14 & 15) Model 2874-95 & 2877-95, 3 HP 2874-013-90 1
Model 2875-95 & 2878-95, 5 HP 2875-013-90 1
Model 2876-95, 7.5 HP 2876-013-90 1
14 Impeller Seal Washer See Ref. 8 or 13 1
15 Impeller Screw, Stainless Steel See Ref. 13 1
16 Casing 1543-003-01 1
17 3/4" NPT Pipe Plug * 3
18 Suction Plate 1589-000-01 1
19 Flapper Valve Assembly See Ref. 8 1
20 3/8"-16 UNC x 1-1/4" Hex Hd Cap Screw * 8
(*) Standard hardware available locally.
(^) Ref. No. 10 is seal seat. Ref No. 11 is seal head
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