General Pump 47 User Manual

GENERAL PUMPA member of the Interpump Group

SERVICING INSTRUCTIONS

VALVE ASSEMBLIES (Figure 1)

1. All inlet and discharge valves can be serviced
without disrupting the inlet or discharge
plumbing. The inlet and discharge valves
are identical in all models.

2. To service any valve, remove valve cap and
extract valve assembly.

3. Examine o-rings and replace if there is any
evidence of cuts abrasions or distortion.

4. Remove valve assembly (retainer, spring valve,
valve seat) from valve cavity.

5. Remove o-ring from valve cavity.

47 Series

Triplex Plunger Pump

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6. Only one valve kit is necessary to repair all the
valves in the pump. The kit included new o-rings,
valve seat, poppet, spring and retainer, all
pre-assembled.

7. Install new o-rings in valve cavity.

8. Insert assembly into valve cavity.

9. Replace valve cap and torque to specifications.

REMOVING MANIFOLD HEAD (Figure 2)

1. Remove the fasteners retaining the head.

2. Separate head from crankcase. NOTE: It may be

necessary to tap head lightly with rawhide

TRIPLEX TRIPLEX

mallet to loosen. CAUTION: When sliding head
from crankcase use caution not to damage
plungers.

3. The V-packing assemblies may come off with
the head. At this point, examine plungers.
Plunger surfaces should be smooth and free
from scoring or pitting; if not, replace.

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4. Reinstall manifold head and torque to
specifications per sequence described below.

TO RQUE SEQ U E NCE FOR TI G H TENIN G H E AD

(Figure 4)
Install all head bolts fingertight. Torque to 10 foot pounds
in sequence as shown, then retorque to specifications,
again in sequence shown.

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General Pump
is a member of
the Interpump Group

47 Series
Servicing Instructions

REPLACING PLUNGERS (Figure 3, 5 & 6)

1. Remove stainless steel piston screw and
plunger from piston rod.

2. If slinger washer comes off with plunger, be
certain this is replaced before new plunger is
installed.

3. Separate piston screw from plunger.

4. Install new o-ring and teflon backup ring on
piston screw. NOTE: A film of grease on the
outside of the o-rings insures a better
installation.

GENERAL PUMPA member of the Interpump Group

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5. Carefully press piston screw into plunger.

6. Slide new plunger over the piston guide and
torque to specifications.

Recommended Tools/Supplies:

1) ZMVTOOL Packing Insertion Tool

2) 100783 Complete Extraction Kit

Includes the following tools:

2530016 handle 2530022 20mm sleeve
2530017 bolt 2530023 22mm sleeve
2530018 pin 2530024 24mm sleeve

3) 190446 Oil Drain Kit

4) 100295 General Pump Series 100 Oil (1-16 oz. bottle)

100214 General Pump Series 100 Oil (6-16oz. bottles)
100216 General Pump Series 100 Oil (24-16 oz. bottles)

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