PAGE 2 OF 4 66172-X
PARTSLIST
ITEM DESCRIPTION(Size in Inches) QTY PARTNO. [MTL] ITEM DESCRIPTION(Size in Inches) QTY PARTNO. [MTL]
1Plunger (1) 90297-1 [SS]
2SolventCup (1) 66009 [C]
3FemaleWasher (1) 90029 [SS]
4Washer,Male Backup (1) 90031 [SS]
g5Spring (1) 90008 [SS]
6PumpBody (1) 91467 [C]
gn7Gasket (3) 92840 [SS]
8LockingNut (2) 90027 [SS]
9Washer (1) 90587 [C]
g10 BowedSpring Washer (2) 90588 [SS]
11 Washer,Male Backup (2) 90591 [SS]
12 Washer,Female Backup (2) 90590 [SS]
n13 Ball(.3437” o.d.) (1) Y16-111 [SS]
n14 Seat (1) 92084 [Ca]
n15 InnerCheck Seat (1) 92083 [SS]
n16 Adapter (1) 92082 [SS]
17 Tube (1) 91463-1 [SS]
n18 BallStop & Pin Assembly (1) 65019 [C]
n19 Ball(.8125” o.d.) (1) Y16-126 [SS]
n20 FootValve (1) 66103 [C]
g22 “V”Packing (66172and 66172-2) (3) 93687-1 [L]
(66172-1) (3) 93687-2 [GFT]
(66172-3) (3) 93687-4 [UH]
g23 “V”Packing (66172) (3) 93687-1 [L]
(66172-1and 66172-2) (3) 93687-2 [GFT]
(66172-3) (3) 93687-4 [UH]
g24 “V”Packing (66172and 66172-2) (2) 93688-1 [L]
(66172-1) (2) 93688-2 [GFT]
(66172-3) (2) 93688-4 [UH]
g25 “V”Packing (66172) (3) 93688-1 [L]
(66172-1and 66172-2) (3) 93688-2 [GFT]
(66172-3) (3) 93688-4 [UH]
g26 “V”Packing (66172and 66172-2) (1) 93688-1 [L]
(66172-1) (1) 93688-2 [GFT]
(66172-3) (1) 93688-4 [UH]
g27 “V”Packing (66172) (2) 93688-1 [L]
(66172-1and 66172-2) (2) 93688-2 [GFT]
(66172-3) (2) 93688-4 [UH]
gItemsincluded in Service Kit 637012-X
nItemsincluded in Service Kit 637013
LOWER PUMP DISASSEMBLY
Note:All threads are right hand.
1. Visethe 66172 Lower Pump assembly on (6) pump body.
2. Unscrew(2) packing nut and remove.
3. Loosen(8) top lock nut. (The one next to (6) pump body.)
4. Securelyhold (17) suction tube with a strop wrench and loosen (8)
lowerlock nut. (The one next to (20) foot valve.)
5. Unscrew(20) foot valve assembly from the (17) suction tube.
6. Removetop (7) gasket, (18) ball stop and pin assembly, lower (7)
gasket,and (19) ball from (20) foot valve assembly.
7. Unscrewand remove (17) suction tube from (6) pump body and off
(1)plunger assembly. Now remove (7) gasket. NOTE: No need to
removeeither (8) lock nut off (17) suction tube.
8. Push (1) plunger assembly down and out the bottom of (6) pump
bodyusing caution not to mar or damage the finish on (1) plunger.
9. Fromthe (6) pump body,remove (3) female washer, (22 and 23) vee
packing,(4) male washer and (5) spring.
10. Remove (9) washer, (10) bowed spring washer,(11) male packing
washer, (24 and 25) (set of 5) packing and (12) female packing
washer.
11. Place a wrench on (15) check seat and remove from (16) adapter
whichis still being held by the vise.
12. Remove (13) ball and (14) seat. Remove (16) adapter from the vise.
13. Remove (12) female packing washer, (26 and27) (setof 3) packing,
(11male packing washer and (10) bowed spring washer.
LOWER PUMP REASSEMBLY
NOTE:All rubber goods and packings should be lubricated with a com-
patiblelubricant prior to assembly.
1. Place(5) spring, (4) male packing washer, (22 and 23) vee packing
and(3) female packing washer in (6) pump body.
2. ApplyPTFE tape to the threads of (2) packing nut.
3. Screw(2) packing nut into (6) pump body. (Hand tight only.)
4. Assemble(10) bowed spring washer, (11) male backup washer (26
and27) (set of 3) packing and (12) female backup washer to (16)
adapter.
CAUTION:Whenassembling packings and washers, be sure they
areassembled correctly as shown in Figure.
5. Assemble(12) female backup washer, (24 and 25) (set of 5) pack-
ing,(11) male backup washer, (10) bowed spring washer, and (9)
washerto (15) inner check seat.
6. ApplyLoctite242 Removable Threadlocker to threads of (16) adapt-
er,then place (13) ball and (14) seat (bevel up) into position in (15)
innercheck seat and screw (16) adapter into (15) inner check seat.
7. Grease(1) plunger, slowly and carefully slide (1) plunger (threaded
end) down through (2) packing nut, (22 and 23) packing and (6)
pumpbody.
8. ApplyPTFE tape to threads of (15) inner check seat.
9. Screw(15) inner check seat into (1) plunger and tighten using t he
wrenchflats on plunger and the hex on the inner check seat.
10. Clean the threads on both ends of (17) suction tube and apply PTFE
tapeto the threads.
11. Apply grease to inside of (17) suction tube and over both (24 and 25)
and(26 and 27) packing assemblies.
12. Place (7) gasket with (6) pump body.
13. Slowly and carefully slide (17) suction tube (either end) over (24 and
25)and (26 and 27) packing and (1) plunger assembly.
14. Screw (17) suction tube into (6) pump body and tighten with strap
wrench.
15. Place (19) ball, (7) gasket, (18) ball stop and pin assembly,and (7)
gasketinto (20) foot valve.
16. Screw (20) foot valve onto the end of (17) suction tube and tighten.
17. Tighten both (8) lock nuts.
18. Tighten (2) packing nut.