15
WILDEN PUMP & ENGINEERING CO.
SECTION 8A
MODEL T4 PLASTIC
DIRECTIONS FOR DISASSEMBLY/REASSEMBLY
Figure 1
Step 2.
Figure 2
Utilizing a
1
⁄
2
" wrench, remove the two small clamp bands that
fasten the discharge manifold to the liquid chambers. (Figure 2)
Step 3.
Figure 3
Lift away the discharge manifold to expose the valve balls and
seats. (Figure 3)
CAUTION: Before any maintenance or repair is attempted, the
compressed air line to the pump should be disconnected and all
air pressure allowed to bleed from the pump. Disconnect all
intake, discharge, and air lines. Drain the pump by turning it
upside down and allowing any fluid to flow into a suitable
container. Be aware of any hazardous effects of contact with
your process fluid.
The Wilden model T4 has a 3.81 cm (1
1
⁄
2
") inlet and outlet and is
designed for flows up to 306.6 lpm (81 gpm). The model T4 plas-
tic is available in polypropylene, PVDF, or Teflon
®
PFA wetted
parts. The air valve is manufactured of brass, Teflon
®
-coated
brass, nickel-plated brass or Stainless Steel. All O-rings used in
the pump are of a special material and shore hardness which
should only be replaced with factory-supplied parts.
TOOLS REQUIRED:
1
⁄
2
" Wrench
3
⁄
16
" Allen Wrench
Adjustable Wrench
Vise equipped with soft jaws (such as plywood, plastic
or other suitable material)
NOTE: The model used for these instructions incorporates
rubber diaphragms, balls, and seats. Models with Teflon
®
diaphragms, balls and seats are the same except where noted.
The procedures for A4 Accu-Flo™ pumps are the same except
for the air distribution system.
DISASSEMBLY:
Step 1.
Before starting disassembly, mark a line from each liquid cham-
ber to its corresponding air chamber. This line will assist in
proper alignment during reassembly. (Figure 1)