Dynabrade 53455 Betriebs-, Wartungs- und Sicherheitshinweise - Seite 4
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Seite druckenDisassembly/Assembly Instructions – 950 RPM Mini Angle-Head Drill
7. Pull the 54529 Spindle along with the bearings out of the angle-head housing.
8. Use the 96346, 2" Bearing Separator, a 3/16" dia. flat end drive punch and the 96232, #2 Arbor Press to remove the bearings from the 54529 Spindle.
9. Remove the shims from the inside of the 54547 Angle-Head Housing.
Angle-Head Disassembly Complete.
Valve Disassembly:
1. Use the 52296 Repair Collar to secure the 53456 Housing in a vise. Position the air inlet so that it is pointing up.
2. Hold the 01578 Inlet Adapter stationary with an adjustable wrench and remove the air fitting with another wrench by turning it counterclockwise.
Important: The 01578 Inlet Adapter must be held stationary with a wrench when the air fitting is installed or removed to avoid damage
to the housing.
3. Remove the 01578 Inlet Adapter by turning it counterclockwise and remove the 01564 Air Control Ring.
4. Remove the 95711 Retaining Ring with the 96343 Retaining Ring Pliers.
2. Remove the 01486 felt silencer (4).
6. Remove the 01379 Bronze Muffler.
7. Use a needle nose pliers to remove the 01468 Spring and the 01472 Tip Valve. The 01464 Seal can be picked out of the housing with a
small flat bladed screwdriver.
8. Use a 2.5mm flat end drive punch to remove the 12132 Pin and throttle lever.
9. Use the retaining ring pliers to remove 95558 Retaining Ring and push the 01469 Speed Regulator Assembly along with the 01449 Valve Stem
out of the housing.
Valve Disassembly Complete.
Valve Assembly:
1. Install the 01469 Speed Regulator Assembly (o-rings included) along with the 01449 Valve Stem into the 53456 Housing and secure it in place with the
95558 Retaining Ring.
2. Install the 01464 Seal into the inlet opening of the housing.
3. Align the hole in the 01449 Valve Stem with the inlet opening of the housing.
4. Use needle nose pliers to install the 01472 Tip Valve so that the metal pin fits into the hole of the 01449 Valve Stem.
5. Install the 01468 Spring so that the small end of the spring fits against the tip valve.
6. Assemble the 94535 Muffler Assembly and install the 01564 Air Control Ring onto the inlet opening of the housing.
7. Apply a small amount of the Loctite #567 (or equivalent) to the male threads of the 01578 Inlet Adapter.
8. Install the muffler assembly onto the housing. (Torque to 23 N·m/200 in. lbs.)
Valve Assembly Complete.
Motor Assembly:
Important: Clean and inspect parts before assembling.
1. Install the 01479 Spacer onto the rotor.
2. Place .003" (.08mm) thickness in shims from the 54529 Shim Pack into the 01478 Front Bearing Plate as an initial spacing. Install the 02649 Bearing into
the 01478 Front Bearing Plate. Use the 96240 Bearing Press Tool against the inner race of the bearing and press the assembly onto the rotor.
3. Check the clearance between the rotor and the bearing plate by using a .001" (.03mm) to .0015" (.04mm) thick feeler gauge. The clearance should be
a .001" (.03mm) to .0015" (.04mm). If necessary adjust the clearance by repeating steps 1-3 changing shims as required. Once the proper rotor/bearing
plate clearance is achieved, install blades that have been lubricated with the 95842 Dynabrade Air Lube (10W/NR or equivalent).
4. Install the 01476 Cylinder so that it rests against the 01478 Front Bearing Plate. Make sure that the air inlet holes of the cylinder line up with the air
inlet holes in the 02676 Rear Bearing Plate.
5. Use the 96216 Bearing Press Tool against the outer race of the bearing to press the 02696 Bearing into the 02676 Rear Bearing Plate. Use the 96216
Bearing Press Tool against the inner race of the bearing to press this assembly onto the rotor. Important: The fit must be snug between the bearing
plates and the cylinder. If it is too tight the rotor will not turn freely. The rotor must turn freely while still maintaining a snug fit. A loose fit will not achieve
proper preload of the motor bearings. Place a small amount of grease on the seal of the 02696 Bearing and stick the 02679 Shield against the bearing.
6. Use the 52296 Repair Collar to secure the housing in a vise. Position the opening of the housing so that the motor cavity is pointing up.
7. Install the motor assembly into the housing making sure that the motor fits all the way into the housing.
Note: Align the Rear Bearing Plate node with the notch on the inside of the Housing.
Motor Assembly Complete.
Gear Case Assembly:
1. Use the raised center portion of the 96239 Bearing Press Tool and the 96232, #2 Arbor Press to push the front 54520 Bearing onto the threaded end
of the 50786 Planetary Carrier.
2. Secure the planetary carrier in a vise with aluminum or bronze jaws. Apply one drop of Loctite #271 (or equivalent) to the threads of the 53150 Pinion.
Install the pinion onto the planetary carrier. (Torque to 17 N·m/150 in. lbs.)
3. Apply a small amount of the 95542 Grease to the needle bearings, the planetary gears, and the gear shafts. Install these into the planetary carrier.
4. Slip the 54468 Ring Gear over the planetary gear assembly positioning it so that the notches in the ring gear will align with the lock screw and grease
fitting openings in the 53152 Gear Case.
5. Use the raised center portion of the 96239 Bearing Press Tool and the arbor press to push the rear 54520 Bearing onto the 50786 Planetary Carrier
until the outer race of the bearing touches the ring gear. Important: The fit should be snug between the bearings and the ring gear. If it is too tight the
carrier will not turn freely. The carrier must turn freely while still maintaining a snug fit. A loose fit will not achieve proper preload of the bearings.
6. Install the complete planetary gear assembly into the 53152 Gear Case. Apply a small amount of the Loctite #567
(or equivalent) to the 50784 Set Screw and install it.
(continued on next page)
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