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Model 150 / 160 / 300 Pumps
If rotors are worn,
replace both rotor
assemblies.
The suction port of
pump body is
stamped "Suction"
and the discharge
port is stamped
"Discharge." There
are holes drilled in
the suction side of
the liners.
2-8
Assembly
General Practice
1. Remove any protective coatings from new parts.
2. Lubricate bearings with same type of lubricant normally used in pump or as
directed in specific repair procedure.
3. Lubricate lip of oil seals with lubricant specified in specific procedure. Install oil
seals, with lip facing out, by applying an even force to outer edge of seal. We recom-
mend using arbor press to seat the seals.
4. Coat both sides of gaskets with high-tack spray (6, Table 2-1). Be sure all old gas-
kets and sealant are removed from parts before installing new ones.
5. Hand-thread cap screws into parts until snug, then tighten in criss-cross pattern to
final torque. Install all cap screws, nuts, and fasteners using anti-seize compound
(4, Table 2-1) unless otherwise indicated in specific procedure.
Assembly Procedure
Assemble Rotors and Liners
1. If removed, install studs (24, Figure 4-1) in pump body (25) using red Loctite
(5, Table 2-1). Remove all traces of red Loctite after installing studs.
2. Install liners (21) in pump body (25). Make sure liner suction holes face pump
body suction port as shown in Figure 2-3.
DISCHARGE
SIDE
Do not rotate rotor assemblies until bearings have been installed and adjusted.
Damage to rotors and liners may occur.
Figure 2-3. Liner Installation
SUCTION
HOLES
SUCTION
SIDE
1070_0017a.cdr
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