WWW.AIRLESSCO.COM TEL: 805-523-0211 FAX: 805-523-1063
Email: [email protected]
WWW.AIRLESSCO.COM TEL: 805-523-0211 FAX: 805-523-1063
Email: [email protected]
PUMP SERVICING PROCEDURE
When sliding head from crankcase use
caution not to damage plungers.
10
Valve Assemblies
1.
All inlet and discharge valves can be serviced without
disrupting the inlet discharge plumbing. The inlet and
discharge valves are the 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.
6.
Only one valve kit is necessary to repair all the valves
in the pump. The kit includes new O-rings, valve
seat, poppet, spring and retainer, all pre-assembled.
7.
Install new O-ring in valve cavity.
8.
Insert assembly into valve cavity.
9.
Replace valve cap and torque to specifications.
Removing Manifold Head
1.
Remove the fasteners retaining head.
2.
Separate head from crankcase.
Note: It may be neccessary to tap the head lightly
with a rawhide mallet to loosen.
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.
4.
Reinstall manifold head and torque to specifications
per sequence described below.
Torque Sequence For Tightening Head
Install all head bolts finger tight. Torque to 10 foot
pounds in sequence as shown below, then retorque to
specifications again in sequence.
Replacing Plungers
1. Remove stainless steel piston screw and plunger
from piston.
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
PTFE
backup-ring on piston
screw. Note: A film of grease on the outside of the
O-Rings insures a better installation.
5. Carefully press piston screw into plunger.
6. Slide new plunger over the piston guide and torque
to specifications.
Replacing V-Packings
1. Remove manifold from crankcase.
2. Insert proper extractor collet through main seal
retainer. Tighten collet and extract retainers,
v-packings and head rings.
3. Place proper insertion tool in cylinder and install
front head ring, v-packing and long life ring and
press firmly into cylinder untill they will go no
further using proper insertion tool.
4. Insert intermediate seal retainer, pressing it firmly
into cylinder untill it will go no further using proper
insertion tool. Install rear head ring, v-packing and
main seal retainer into cylinder in order shown and
press firmly into cylinder.
5. Repeat this sequence for each cylinder.
6. Coat each plunger with grease and carefully
remount manifold. Torque head to specifications.