SKF Lincoln Guía De Instalación Y Mantenimiento página 6

Overhaul
!
Notice
Refer to Figure 2 for component
identification on all overhaul procedures.
Prior to performing any maintenance proce-
dure, the following safety precautions must
be observed. Personal injury may occur.
D A N G E R
Do not use halogenated hydrocarbon
solvents such as methylene chloride or
1,1,1-trichloroethane in this pump. An
explosion can result when aluminum
and/or zinc-plated parts in the pump
come in contact with halogenated hydro-
carbon solvents.
Release all pressure within the system
prior to performing any overhaul
procedure.
• Disconnect the air supply line from the
pump motor.
• Into an appropriate container, operate
the control valve to discharge remain-
ing pressure within the system.
Never point a control valve at any portion
of your body or another person. Acciden-
tal discharge of pressure and/or fluid can
result in injury.
Read each step of the instructions
carefully. Do not operate, perform main-
tenance or troubleshoot this equipment
unless you have read and understand
the intructions.
Failure to comply may result in death
and/or serious injury.
Disassembly
Separate pump tube from air
motor
1 Clamp body (10) horizontally in a soft-jaw
vise.
2 Loosen jam nut (12) that secures the
pump tube assembly to the body.
!
Notice
Support the pump tube assembly
during removal. Damage to components
can occur.
3 Unscrew cylinder (13) from the body.
Remove the cylinder with attached
components.
4 Pull on rod and stop assembly (5) to ex-
pose the end of the air motor piston.
5 Remove cotter pin (4) securing air motor
piston to rod and stop assembly.
6 Unscrew rod and stop assembly from air
motor piston.
7 Unscrew and remove air motor assembly
(1) from body.
Pump tube assembly
Body assembly
1 Remove gasket (11) from the bottom of
the body.
2 Unscrew bushing (7) from the body.
3 Remove o-ring (6) from the bushing
assembly.
4 Remove back-up washer (8) and seal (9)
from the body.
6
Cylinder Assembly
1 Unscrew nut (16) that secures plunger as-
sembly (15) to the rod and stop assembly.
2 Remove the plunger and washer (14)
from the rod and stop assembly.
3 Unscrew foot valve body (19) from the
cylinder.
4 Remove gasket (11), stop washer (17),
additional gasket (11), and ball (18) from
the foot valve body.
5 Remove the jam nut from the cylinder as
required.
Clean and inspect
1 Clean all metal parts in cleaning solvent.
2 Inspect all parts for wear and/or damage.
Replace as necessary.
!
Notice
Use only environmentally safe
cleaning solvents to clean metal parts.
3 Inspect plunger assembly (15) for wear.
Replace as necessary.
4 Inspect bore of cylinder (13) for any score
marks. Replace as necessary.
5 Closely inspect the mating surfaces of all
check valve components for any imperfec-
tions. Ensure a smooth and clean contact
is obtained when assembled.
Example: place ball (18) into foot valve
body (19). Fill the foot valve body with
solvent.
6 Inspect for leaks.