WIL-11730-E-01
19
PR460 Bolted Metal
Step 9
Check center section shaft seals for signs of
wear. If necessary, remove the shaft seals
with O-ring pick and replace.
REASSEMBLY HINTS AND TIPS
Upon performing applicable maintenance to the air distribution
system, the pump can now be reassembled. Please refer to the
disassembly instructions for photos and parts placement.
To reassemble the pump, follow the disassembly instructions in
reverse order. The air distribution system needs to be assembled
first, then the diaphragms and finally the wetted path. The
applicable torque specifications are on this page.
The following tips will assist in the assembly process:
•
Lubricate the air valve bore, center section shaft and
pilot spool bore with NLGI grade 2 white EP bearing
grease or equivalent.
•
Clean the inside of the center section shaft bore to
ensure no damage is done to new shaft seals.
•
A small amount of NLGI grade 2 white EP bearing
grease can be applied to the muffler and air valve
gaskets to lubricate gaskets during assembly.
•
Make sure that the exhaust port on the muffler plate is
centered between the two exhaust ports on the center
section.
•
Stainless bolts should be lubed to reduce the possibility
of seizing during tightening.
Maximum Torque Specifications
Description
Torque
Air Valve
5.1 N-m (45 in-lb)
Air Chamber/Center Block
27.1 N-m (20 ft-lb)
Liquid Chamber/Air Chamber
47.5 N-m (35 ft-lb)
Outer Pistons, All
54.2 N-m (40 ft-lb)
Manifold/Liquid Chamber
47.5 N-m (35 ft-lb)
DISASSEMBLY / ASSEMBLY
