CHAPTER 7. PUMP REPAIR INSTRUCTIONS

CHAPTER 7

PUMP REPAIR INSTRUCTIONS

(3) Press new rings in place.

7-1. General

(4) Drill and tap number 10-24 two holes

180apart.

Refer to paragraph 3-61a for description.

(5) Replace setscrews (19).

7-2. Pump Repair

Overhaul.

a. Removal.

Refer to figure 3-39 and remove

(1) Disassemble the pump in accordance

the pump from the pumping unit.

Disassembly. Refer to figure 3-40 and

(2) Replace wear rings, bearings, oil seal,

disassemble the pump.

mechanical seal, shaft sleeve "0O" ring, check valve,

c. Cleaning and Inspection. Refer to paragraph

impeller nut, and all gaskets.

3-61e for cleaning and inspection in-

(3)

Inspect all other parts for cracks,

structions.

breaks, stripped threads, wear, or other damage;

Wear Ring Inspection and Replacement.

replace if damaged.

Check wear ring to impeller running clearance, if the

f. Reassembly. Refer to figure 3-40 and

clearance is over replace the rings as follows:

assemble pump using new gaskets and seals.

(1)

Refer to figure 3-40 and unscrew

g. Installation.

Refer to figure 3-39 and install

setscrews (19).

pump

reverse

order

removal

(2) Use puller and remove wear rings (18)

and (45) or turn to thin shell and collapse.

7-1