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Table of contents for the manual
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Page 1
INSTRUCTION AND REP AIR MANUAL MODELS 341A, 342A AND 344A 6 SECTION 6 ITEM 340 DATED JUNE 1998 SUPERSEDES ITEMS 341, 342, 344 DATED MARCH 1992 © 1992 AURORA PUMP NO. AURORA, ILLINOIS NOTE This repair manual is applicable to pump Models 341A, 342A and 344A. All photos illustrate Model 344A. A TTENTION: SAFETY W ARNINGS : Read and understand all war[...]
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Page 2
MODELS 341A-342A-344A 2 grease is recommended as lubricants for pumps operating in both wet and dry locations. Mixing of different brands of grease should be avoided due to possible chemical reactions between the brands which could damage the bearings. Accordingly , avoid grease of vegetable or animal base which can develop acids, as well as grease[...]
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Page 3
MODELS 341A-342A-344A 3 DISASSEMBL Y Disassemble only what is needed to make repairs or accomplish inspection. (See Figure 2 for Model 341A, Figure 3 for Model 342A and Figure 3 for Model 344A.) 1. Disconnect and lockout power source to prevent drive unit from being energized during disassembly . 2. Unscrew the two drain plugs (4) from the casing ([...]
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Page 4
MODELS 341A-342A-344A 4 13. The seal flexible cup and stationary seat should be pressed out of the bracket (35) and the cavity cleaned of all residue. Make sure that the 1/32 inch radius in the seal seat cavity is not damaged during disassembly since a sharp edge can eas- ily cut the flexible cup during reassembly . 14. On Model 344A pumps, remove [...]
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Page 5
MODELS 341A-342A-344A 5 Secure support (41) to bracket (35) with capscrews (39) and washers (40). Frame sizes 143 thru 184-JM Model 341A only . 7 . If nameplate (34) was removed, install and attach with screws (33). 8. W ipe the sealing faces of the seat and seal washer clean. Replace pin (61) in sleeve if it was removed during disas- sembly . Appl[...]
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Page 6
FLEXIBLE CUP ST A TIONAR Y SEA T W ASHER FLEXIBLE BELLOWS RET AINER DRIVE RING SPRING MODELS 341A-342A-344A 6 Figure 1. Mechanical Seal[...]
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Page 7
MODELS 341A-342A-344A 7 NOTES: 1. BRONZE FITTED CONSTRUCTION WILL BE FURNISHED AS ST ANDARD UNLESS SPECIFIED. 2. REFER TO F ACTOR Y FOR SPECIAL ALLOYS. 3. AURORA PUMP RESER VES THE RIGHT T O SUBSTITUTE MA TERIALS WITHOUT NOTICE 4. PIECE NUMBERS 14 AND 15 ARE NOT FURNISHED AS ST ANDARD, WHEN FUR- NISHED, IMPELLER MUST BE MODIFIED. 5. PIECE NUMBERS 3[...]
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Page 8
8 8 9 15 6 11 14 9A 41 35 33 34 32 27 25 61 16 5 2 3 39 9B 9C 3 4 1 7 12 10 40 4 MODEL 341A Figure 2. Model 341A Exploded View[...]
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Page 9
9 6 7 72 74 75 73 39 4 1 3 8 27 35 32 5 61 12 15 11 14 10 25 16 33 34 2 3 9B 9A 9C 9 4 MODEL 342A Figure 3. Model 342A Exploded View[...]
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Page 10
10 MODEL 344A 16 8 11 14 9A 9B 9C 7 15 27 25 61 12 10 49 52 50 55 42 54 57 64 2 3 5 35 63 62 39 60 33 46 56 51 47A 46 56 48 47 51A 53 41 40 44 59 58 59 9 6 1 3 4 34 32 4 59 43 Figure 4. Model 344A Exploded View AP-Sect.6-Item 340[...]