ARO DR025B Посібник оператора - Сторінка 5
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Друкувати сторінкуDISASSEMBLY/ASSEMBLY
INSTRUCTIONS
M22
70
Unthread and remove adapter (40) -LEFT HAND THREADS
- releasing bearing (42).
To disassemble drive assembly, unthread lock nut (74) -
LEFT HAND THREADS -and pull drive assembly from hous-
ing (56 or 78). Do not disassemble further unless damage is
evident. NOTE: Drive assembly contains 22 small balls which
will fall out if drive assembly is disassembled.
RIGHT-ANGLE ASSEMBLY
(LIGHT DUTY)
Lubricate bearings upon assembly.
Assemble bearing (71) and gear (70, 75, 81, 87, 89 or 96) to
shaft (72 or 80).
Assemble gear and components to lock nut (74) securing
balls (73) in groove in gear.
Assemble lock nut (74) to housing (56 or 78) - LEFT HAND
THREADS.
Assemble bearing (42) and lock nut (41) to body, securing with
adapter (40) - LEFT HAND THREADS.
Assemble bearing (54) to pinion (55).
Assemble pinion to housing (56 or 78).
Assemble housing (56 or 78) to body (51) to seat needle bear-
ing. Unthread and remove body. NOTE: Bearing is to be lo-
cated .525" from end of housing (56 or 78)(see illustration
below).
Assemble shims (52 and 53) to body.
Assemble housing (56 or 78) to body (51) - LEFT HAND
THREADS.
Assemble coupling (39) to pinion and assemble "0" ring (91)
to adapter. NOTE: "0" ring is to be free of oil and grease. As-
semble right-angle section to tool, securing with lock nut (41)
- LEFT HAND THREADS.
GEARING DISASSEMBLY
Remove right-angle section from tool.
Remove ring gear (24 or 29) using a wrench on flats.
Remove snap ring (28) and washer (27).
Remove spindle(s) and gears from ring gear. NOTE: Keep
gears grouped with mating spindle when disassembling
double reduction gearing.
Do not remove bearing (26) or spacer (25) unless damage is
evident.
To remove bearing (26) and spacer (25) from ring gear, press
on spacer (25) from inside splined end of ring gear.
Do not remove gear (37) from carrier assembly unless dam-
age is evident. Gear (37) is press fit onto carrier assembly.
GEARING ASSEMBLY
Assemble spacer (25) into ring gear.
Press bearing (26) into ring gear. NOTE: Press on outer race
of bearing and press to shoulder of ring gear.
Coat shafts of spindle with ARO 33153 grease.
Assemble gears to shafts of mating spindle,
Assemble carrier assembly to spindle assembly for models
with double reduction gearing.
Lubricate sets of gears liberally with ARO 33153 grease (see
"Routine Lubrication Requirements", page 3).
Assemble spindle(s) and gearing into ring gear. Rotate
spindle and gears to align gear teeth with splines of ring gear.
Assemble washer (27) to spindle, securing with snap ring
(28).
Thread ring gear (24 or 29) to tool, tightening with wrench on
flats.
Assemble right-angle section to tool.
MOTOR DISASSEMBLY
Remove right-angle section and gearing from tool.
Remove spacer (22) and "0" ring (21).
Tap front edge of housing to remove motor assembly. Locat-
ing pin (23) should also come out.
Tap splined end of rotor (17) with a soft face hammer; motor
will come apart. NOTE: Bearing (20) is light press fit on rotor.
Remove end plate (15) and bearing (14) from rotor.
MOTOR ASSEMBLY
Lubricate bearing (14) with ARO 33153 grease.
Assemble bearing (14) to end plate (15). NOTE: Press on out-
er race of beating.
Assemble end plate (15) to rotor. NOTE: Press on inner race
of bearing.
Coat five rotor blades (16) with ARO 29665 spindle oil and as-
semble to rotor slots - straight side out.
Coat i.d. of cylinder (18) with ARO 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 (15).
Assemble bearing (20) to end plate (19). NOTE: Press on out-
er race of bearing.
Assemble end plate (19) to rotor. NOTE: Press on inner race
of bearing. Be sure rotor turns without binding.
Insert locating pin (23) into .081" 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 (23).
Grease and assemble "0" ring (21) to end plate (19).
Assemble spacer (22) to motor, with chamfer facing motor.
Assemble gearing and right-angle section to tool.
HOUSING DISASSEMBLY
Clamp air inlet adapter (2) in a smooth face vise.
Unthread housing (9) with a strap type wrench.
Remove spacer (3) washer (4) exhaust cap (5) muffler pad
(6) spring (7) and valve rod (8). CAUTION: Do not remove or
adjust rubberportion of valve rod (8) as it is preset at the facto-
Remove screen (1) from inlet adapter (2).
Remove throttle pin (11) and spring (10).
Models DR025B-( ) - Do not remove restrictor (83) unless
damage is evident.
HOUSING ASSEMBLY
Lubricate throttle pin (11) with ARO 29665 spindle oil.
Install spring (10) and throttle pin (11) into housing. NOTE:
Align slot in throttle pin with air inlet holes in housing.
Install valve rod assembly (6) into housing. NOTE: Throttle pin
(11) should not pull out when valve rod (8) is seated properly.
Install muffler pad (6) to exhaust cap (5).
Install exhaust cap (5) to housing, aligning lever with throttle
pin (11).
Assemble spring (7) washer (4) and spacer (3) to tool, secur-
ing with inlet adapter (2).
Clean and replace screen (1) in inlet adapter (2).
Models DR025B-( ) - Grease and assemble "0" ring (84) to
restrictor (83) and assemble to housing (9) with opening of re-
strictor positioned towards motor. Secure restrictor with retain-
ing ring (85).
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