ARO 8426-7 Manual del usuario - Página 4
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Imprimir páginaDISASSEMBLY/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 "O" rings when servicing this tool.
Use only genuine ARO replacement
parts for this tool. When
ordering, specify part number, description, tool model number
and serial number.
GEARING
DISASSEMBLY
Clamp tool in a vise.
Remove chuck. Remove thread guard (60) and spacer (54) or
nose housing (58) felt washer (57) and spacer (54).
Remove drive gearing assembly from tool.
Remove spindle and components
from ring gear.
Remove bearing (33) (and spacer 34 where applicable)
and
bearing (44).
Remove shafts and gears.
Remove and disassemble
auxiliary gearing.
GEARING
ASSEMBLY
Assemble spacer and bearing (44) to spindle.
Assemble gears and shafts to spindle.
Assemble
bearing (33) (and spacer 34 where applicable)
to
spindle.
Assemble spindle and washer (45) (large diameter facing out)
into ring gear.
Assemble auxiliary gearing.
Assemble gearing to tool.
Assemble spacer (54) to tool. Assemble felt washer (57) nose
housing (58) and chuck (59) or thread guard (60) and chuck
(61) to tool.
MOTOR DISASSEMBLY
Remove gearing from tool.
Remove nut (30) muffler sleeve (29) screen (28) and adapter
(27).
Remove motor assembly and spacers (32 and 31).
Remove retaining nut (16) and sems fastener (17).
Tap splined end of rotor with a soft face hammer; motor will
come apart,
MOTOR ASSEMBLY
Lubricate bearings with ARO 33153 grease.
Assemble
bearing (18) to end plate (19) and bearing (26) to
end plate (25).
Assemble end plate (19) with bearing and spacer (20) to ro-
tor. NOTE: Bearing is press fit on rotor, press on inner race of
bearing.
Coat i.d. of cylinder (24) with ARO 29665 spindle oil and as-
semble over rotor.
Coat five rotor blades (22) with ARO 29665 spindle oil and as-
semble to rotor slots.
Assemble
end plate (25) with bearing (26) to rotor. NOTE:
Bearing is press fit on rotor, press on inner race of bearing.
Assemble
sems fastener (17) and retaining nut (16) to end
plate. NOTE: torque fastener to 28 in. Ibs and nut to 9 - 12 ft
Ibs. Be sure rotor turns without binding.
Assemble
motor to housing (14). Assemble
adapter
(27)
spacers (31 and 32) screen (28) muffler sleeve (29) and nut
(30) to housing.
THROTTLE
HOUSING
DISASSEMBLY
Remove inlet adapter (2) and screen (1).
Remove spacer bushing (3) spring (4) and valve stem (8).
Drive out roll pin (10).
Remove lever (11) and trigger (13).
Remove screw (6) washer (7) and oilite casting (9).
THROTTLE
HOUSING
ASSEMBLY
Assemble trigger (13) and lever (11) to housing (14).
Install roll pin (10).
Lubricate and assemble "O" ring (5) to valve stem (8).
Assemble valve stem (8) spring (4) spacer bushing (3) and
inlet adapter (2) to housing.
Clean and replace screen (1) in inlet adapter (2).
Assemble oilite casting (9) to housing.
Fill oil cavity and seal with washer (7) and screw (6).
4
PN 49999-051