User's Manual

Parts
28 3A0411F
Polypropylene Center Sections
* Included in Center Section Rebuild Kit.
The center housing (106) is not sold separately.
Sample Configuration Number
Pump Size
and Material
Center Section Fluid Covers
and Manifolds
Seats Check
Balls
Diaphragm Manifold and
Seat Seals
3300A
A01A
A1 TP BN TP BN
ti17769a
Polypropylene
113*
101*
110*
116*
106
117
118
111
119
2
2
7
2
6
109*
107*
108*
119
103
112*
105
8
Lips must face out of housing.
6
Torque to 20-25 in.-lb (2.3-2.8 N•m).
8
Apply lithium-based grease.
2
Torque to 25-35 ft-lb. (34-47 N•m).
7
Ref. Description Qty.
101* U-CUP, center shaft 2
103 BOLT, hex head, 7/16-14 x 6.25,
stainless steel
4
105 COVER, air 2
106 HOUSING, center, not sold separately 1
107* GASKET, air cover 2
108* SHAFT, center 1
109* BEARING, shaft 2
110* VALVE, pilot, assembly 2
111 VALVE, air, see page 31 1
112* PIN, dowel, stainless steel 4
113* GASKET, air valve 1
114 LUBRICANT, thread, not shown 1
116* NUT, serrated 4
117 SCREW, hi-lo stud 4
118 NUT, jam, 7/16, stainless steel 4
119 WASHER, 7/16, stainless steel 8
Ref. Description Qty.