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666250-XXX-C (en) Page 5 of 8
22
21
19
27
1
61
26
567 14
2
29
9
22
21
19
15
60
26
)
ASSEMBLY TORQUE REQUIREMENTS
(
NOTE: DO NOT OVERTIGHTEN FASTENERS.
(14) screw, 65 - 70 ft lbs (88.1 - 94.9 Nm).
(26) screw, 30 - 40 ft lbs (40.7 - 54.2 Nm).
(27) screw, 30 - 40 ft lbs (40.7 - 54.2 Nm).
LUBRICATION / SEALANTS
c
Apply Key-Lube grease to all “O” rings, “U” cups and mating
parts.
d
Apply Loctite® 271™ to threads.
e
Apply anti-seize compound to threads and bolt and nut
ange heads which contact pump case when using stain-
less steel fasteners.
f
Not used with models 6662XX-9XX-C, 6662XX-EXX-C and
6662XX-GXX-C.
PARTS LIST / 6662XX-XXX-C FLUID SECTION
FOR THE AIR MO-
TOR SECTION, SEE
PAGES 6 & 7.
Figure 2
COLOR CODE
Diaphragm Ball
Material Color Color
Hytrel Cream Cream
Nitrile Black Red (•)
Santoprene Tan Tan
Santoprene Green* N / A
(backup)
PTFE White White
(-) Stripe (•) Dot
* See item 8 in inset below.
Torque Sequence
3
2
7
5
1
8
6
4
9
10
PTFE 7
Santoprene 8
(green when used
as a backer
)
View for 6662XX-XX4-C (PTFE dia-
phragm) con guration only.
Air side Fluid side
Cross section view of diaphragms