Alemite 7334-B Service-Handbuch - Seite 8
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Overhaul
NOTE
Refer to fig. IPB, page for compo-
nent identification on all overhaul
procedures.
WARNING
Release all pressure within the system
prior to performing any overhaul
procedure.
• Disconnect the air supply line to the
pump's motor.
• Into an appropriate container, operate
the control valve to discharge remain-
ing pressure within the system.
• Disconnect the delivery connecting
hose.
Read each step of the instructions care-
fully. Make sure a proper understanding
is achieved before proceeding.
Disassembly
NOTE
Prior to disassembly, release tension on
the power spring.
Pull on the delivery hose to unlatch the
reel.
Allow the hose to retract onto the reel.
Turn the reel in the same direction until
the power spring bypasses spring
arbor ().
. A pronounced "click" will sound.
Unwrap each coil of hose from sheave
assembly ().
Remove wing nuts () and washers ()
that secure u-bolt () to the sheave
assembly.
. Remove the u-bolt from the sheave.
Model dependent step
Remove the hose from ° union ( or
) or swivel assembly ().
Sheave and power spring
assembly
Model dependent step
Remove swivel assembly (, or )
from shaft and flange assembly ().
. Remove the ° union from the
swivel assembly as necessary
(models -B, and -B).
Remove retaining ring () and
washer () from the shaft and flange
assembly.
. Use care not to mar the surface of
the shaft.
Remove the sheave and power spring
assembly from the shaft and flange
assembly.
NOTE
Perform steps and only if replac-
ing sheave assembly () or power
spring assembly ().
Position the sheave and power spring
assembly with the ratchet upward.
Drill out rivets () that secure power
spring assembly to the sheave assembly.
. Remove the power spring assem-
bly from the sheave assembly.
Base and hose guide assembly
Remove spring arbor () from the shaft
and flange assembly.
. Remove woodruff key ().
Remove bearing () from the shaft and
flange assembly.
Remove nuts () that secure hose guide
assembly () to base assembly ().
. Remove the hose guide assembly
from the base assembly.
Remove nuts () that secure the shaft
and flange assembly to the base
assembly.
. Remove the shaft and flange
assembly from the base assembly.
Remove bolts () from the shaft and
flange assembly as required.
Remove nut () that secures screw ()
to the base assembly.
. Remove the screw and pawl spring
sleeve () from the base
assembly and pawl spring ().
Remove nut () that secures the latch
pawl assembly to the base assembly.
. Remove the latch pawl assembly
from the base assembly.
Pawl assembly
Remove retaining ring () from pawl
shaft ().
Remove washers (), wave spring (),
and pawl () from the pawl shaft.
Remove the pawl spring from the pawl.
Low-pressure swivel
assembly
Remove o-ring () from swivel body ().
Push retainer () toward swivel stud ()
to expose keeper ().
Remove the keeper from the swivel stud.
Remove the retainer, thrust washer (),
and the swivel body from the swivel stud.
Remove o-rings ( and ) from the
swivel body.
Medium- and high-pressure
swivel assemblies
The body and stud assemblies for the
medium- and high-pressure swivels cannot
be repaired. However, the sealing and
back-up components are available
separately.
Clean and inspect
NOTE
Use the repair kit for replacement parts.
Make sure all the components are
included in the kit before discarding
used parts.
Clean all metal parts in a modified petrole-
um-based solvent. The solvent should be
environmentally safe.
• Make sure to remove the old sealant from
the threads of all components.