ARO 8133 Panduan Operator - Halaman 5

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DISASSEMBLY/ASSEMBLY
INSTRUCTIONS
Never apply excessive
pressure by a holding device which
may cause distortion of a part.
Apply pressure evenly to parts which have a press fit.
Apply even pressure to the bearing race that will be press
fitted to the mating part.
Use correct tools and fixtures when servicing this tool.
Don't damage "0" rings when servicing this motor.
Use only genuine AR0
replacement
parts for this motor.
When ordering, specify part number, description, model num-
ber and serial number.
GEARING
DISASSEMBLY
Remove nut (36) from spindle.
Unthread and remove ring gear (31) and components
from
motor.
Remove spindle assembly (29).
Do not disassemble
further unless damage is evident.
Heat adapter (37) lightly and remove.
To remove bearings and spacers from ring gear, press on
spacer (32) from inside splined end of ring gear.
GEARING
ASSEMBLY
Assemble spacer (32) and one bearing (33) to ring gear (31).
NOTE: Press on outer race of bearing.
Coat shafts of spindle (29) with AR0 33153 grease and as-
semble gears (27), containing needle bearings (28) to shafts.
Lubricate gears liberally with AR0 33153 grease (approxi-
mately l/8 oz.).
Assemble spindle to ring gear, aligning gear teeth with splines
of ring gear.
Assemble spacer (34) and bearing (33) to ring gear. NOTE:
Press on outer race of bearing.
Assemble wave washer (35) to ring gear.
Assemble nut (36) to spindle, securing components.
Apply a good grade thread adhesive (such as Loctite 271) to
internal threads of adapter (37) and assemble to ring gear.
Assemble spacer (26) to ring gear and assemble ring gear to
motor.
MOTOR DISASSEMBLY
Remove gearing from motor.
Remove spacer (26) and "0" ring (30).
Tap front edge of housing to remove motor assembly (40). Lo-
cating pin (25) should also come out.
Grasp cylinder in one hand and tap splined end of rotor with a
soft face hammer; motor will come apart.
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Remove end plate (18) and bearing (17) from rotor.
MOTOR ASSEMBLY
Pack bearing (17) with AR0 33153 grease and assemble to
end plate (18), pressing on outer race of bearing.
Assemble
end plate (18) to rotor, pressing on inner race of
bearing.
Coat five rotor blades (20) with AR0 29665 spindle oil and as-
semble to rotor slots - straight side out.
Coat i.d. of cylinder (22) with AR0 29665 spindle oil and as-
semble over rotor. NOTE: Air inlet slots in end of cylinder must
be aligned with two air inlet holes in end plate (18).
Assemble
bearing (24) to end plate (23), pressing on outer
race of bearing.
Assemble
end plate (23) to rotor, pressing on inner race of
bearing. Be sure rotor turns without binding.
Insert locating pin (25) into .096" diameter blind hole at bottom
of motor cavity in housing.
Align notches of end plates and cylinder and install motor into
housing, aligning notches with locating pin (25).
Lubricate and assemble O-ring (30) to End Plate (23).
Assemble spacer (26) and gearing to motor.
THROTTLE
DISASSEMBLY
Clamp air inlet adapter (2) in a smooth face vise.
Unthread housing (9) with a strap type wrench.
Remove washer (3), diffuser (4) muffler housing (5) two fillers
(6), spring (7) and valve rod (8). CAUTION: Do not remove or
adjust rubber portion of valve rod (8), as it is preset at the facto-
ry. However, if air leakage occurs due to wear, unscrew rubber
portion of valve rod NOT more than one complete turn (coun-
terclockwise).
Remove throttle pin (16) and spring (15).
Remove screen (1) from inlet adapter.
THROTTLE
ASSEMBLY
Install spring (15) and throttle pin (16) into housing, aligning
slot in throttle pin with air inlet holes in housing.
Install valve rod assembly (8) into housing. NOTE: Throttle pin
(16) should not pull out when throttle rod (8) is seated properly.
Install two fillers (6) to muffler housing (5).
Install muffler housing (5) to housing, aligning lever (11) with
throttle pin (16).
Assemble spring (7) into housing.
Assemble
diffuser (4) and washer (3) to housing, securing
with inlet adapter (2).
Clean and replace screen (1) in inlet adapter.
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