Dynabrade 55126 Safety, Operation And Maintenance Manual Download

Page: 6 / 8

Loctite

is a registered trademark of Loctite Corp.

Motor Assembly/Disassembly Instructions – 3" Dynabuffer (cont.)

Refer to the exploded view of the

55170

Flow Control Assembly to identify the parts and their proper order of assembly. Care should be taken when installing the

55169

Stem and

01024

O-Rings into the

55168

Inlet Adapter to prevent the lead O-Ring from shearing as it passes over the cross hole in the

55168

Inlet Adapter.

Apply a small amount of Vaseline to the O-Rings insert a 5/32" (4mm) hex wrench into the

55169

Stem and then slowly twist the stem as you gently push the Stem

into position. Secure the Stem with

95558

Retaining Ring.

After threaded surfaces have been properly cleaned and primed, apply a small amount of Loctite #567 (or equivalent) to the external threads of the

55168

Inlet

Adapter. Install the

55170

Flow Control Assembly onto to the

45252

Throttle Body Housing. (Torque to 28 N•m/250 in. lbs.)

10.

Install the

95492

Screws into the two handle bosses in the

55160

Housing.

11.

With the throttle body mounting thread pointing up, position

95492

Screws between the vise jaws and secure the

55160

Housing in the vise.

NOTICE: Do not over tighten the vise.

12.

Install the

45267

Insert (smaller diameter end first) into the

45252

Throttle Body Housing.

13.

Apply a small amount of Vaseline to the

95523

O-Ring and install it onto the

45267

Insert.

14.

After threaded surfaces have been properly cleaned and primed, apply a small amount of the Loctite #567 (or equivalent) to the threads of the

55160

Housing. Install

the Throttle Body Housing assembly onto the

55160

Housing. Position the throttle lever assembly to the desired location and use a “Wide-Open” smooth jaw

adjustable, or a 34 mm open-end wrench to tighten the throttle body. NOTICE: LEFT HAND THREAD, Turn counterclockwise. (Torque to 45 N•m/400 in. lbs.)

15.

Slide the

01547

Collar back onto the throttle body lock nut.

Throttle Body Assembly Complete.

Shroud Assembly:

Install the two

55161

O-Rings into the inner and outer shrouds.

Install the

55158

Muffler Insert into the outer shroud.

Fit and install the inner shroud into the outer shroud. Rotate the inner shroud to interlock with the outer shroud.

Apply a small amount of Vaseline to the

55161

O-Rings.

Push the shroud assembly onto the

55160

Housing. Rotate the shroud assembly to line-up the four mounting holes in the shroud with the four threaded holes in the

55160

Housing.

NOTICE: Install the air motor before continuing with the shroud assembly. SEE: Motor Assembly (Steps 13 – 18) for air motor installation instructions.

After threaded surfaces have been properly cleaned and primed, apply a small amount of the Loctite #567 (or equivalent) to the threads of the four

97101

Screws.

Use the

95050

Hex Key (5/64") to install.

Install the

97166

Hang Plate. NOTICE: Insert the throttle body through the large opening in the

97166

Hang Plate and pull it into position around the

55160

Housing

and above the shroud.

Shroud Assembly Complete.

Motor Assembly:

Install the

95630

Snap Ring onto the

57069

Balancer Shaft.

Install the

59084

V-Seal onto the balancer shaft so that it fits down past the step on the balancer shaft.

NOTICE: The flat side of the v-seal must face the

56052

Bearing.

After threaded surfaces have been properly cleaned and primed, apply a small amount of the Loctite #271 (or equivalent) to the bearing surface of the balancer shaft.

Face the seal side of the

56052

Bearing toward the flat side of the

59084

V-Seal. Use the

57091

Bearing Press Tool and the

96232

Arbor Press (#2) to push the

bearing down to the step on the

57069

Balancer Shaft.

After threaded surfaces have been properly cleaned and primed, apply a small amount of Loctite #271 (or equivalent) to the outside diameter of the

56052

Bearing,

and install the balancer shaft/bearing assembly into the

55153

Shaft Balancer.

CAUTION: To avoid injury during the final installation of the

95630

Snap Ring, it is best to secure the counterbalance in a vise. Use a small thin screw driver to install

the snap ring. Install the

95630

Snap Ring between the hex end of the balancer shaft and the flat side of the

59084

V-Seal. The snap ring must fit into the groove on

the inside diameter of the

55153

Shaft Balancer.

Install the

55154

Lock Ring, and the

55155

Lock Ring Spacer onto the

55153

Shaft Balancer. Use the smaller diameter end of the

57091

Bearing Press Tool and the

arbor press to push the

02695

Bearing down to the top of the counterbalance on the shaft balancer. Install the

55152

Front Bearing Plate in the same manner.

Install the

54673

Key into the

55153

Shaft Balancer.

Apply the

95842

Dynabrade Air Lube 10W/NR (or equivalent) to the vanes. Install the

54671

Rotor and

54674

Vanes (5/pkg.).

10.

Position the

55151

Cylinder Assembly so that the short line-up pin side fits against the

55152

Front Bearing Plate.

11.

Install the

54679

Rear Bearing Plate and the

01206

Bearing onto the

55153

Shaft Balancer. NOTICE: The

01206

Bearing is a slip fit into the

54679

Rear Bearing

Plate. Use the smaller diameter end of the

57091

Bearing Press Tool and the arbor press to push the bearing and plate down until the rear bearing plate just touches

the

55151

Cylinder Assembly. This should create a snug fit between the bearing plates and the cylinder.

12.

Use the

96343

Retaining Ring Pliers to install the

95626

Retaining Ring with the curve of the ring arched up. Push the sides of the retaining ring down into the groove

at the top of the shaft balancer.

13.

After threaded surfaces have been properly cleaned and primed, apply a small amount of the Loctite #567 (or equivalent) to the threads of the

55154

Lock Ring.

14.

Grasp the counterbalance of the motor assembly. Sight the end of the

95865

Pin with the line-up hole on the inside of the

55160

Housing. Carefully install the motor

assembly into the

55160

Housing so that the

95865

Pin fits into the line-up hole. By hand, use the

56058

Lock Ring Tool to turn the lock ring clockwise into the

housing. If resistance is felt, stop and realign the motor assembly. If the motor assembly is aligned correctly, the lock ring and the motor should advance into
the housing easily.

15.

Install the

95492

Screws into the two handle bosses in the

55160

Housing.

16.

With the shaft balancer (counterbalance) facing up, position

95492

Screws between the vise jaws and secure the

55126

3" Dynabuffer in the vise.

NOTICE: Do not over tighten the vise.

17.

Use the

56058

Lock Ring Tool to secure the

55154

Lock Ring and motor assembly into the

55160

Housing. (Torque to 28 N•m/250 in. lbs.)

18.

Use the

95050

Hex Key (5/64") to install the four

97101

Screws to secure the shroud assembly.

19.

Use the

59293

Offset Wrench (26 mm) to install the back-up pad.

Motor Assembly Complete. Tool Assembly Complete.

Throttle Lever Positioning Procedure:

Use the

59293

Offset Wrench (26 mm) to remove the back-up pad.

Install the

95492

Screws into the two handle bosses in the

55160

Housing.

With the air inlet pointing up, position

95492

Screws between the vise jaws and secure the

55126

3" Dynabuffer in the vise.

NOTICE: Do not over tighten the vise.

Slide back the

01547

Collar onto the

45206

Housing Sleeve. NOTICE: Do not to entirely separate the

45252

Throttle Body Housing from the

55160

Housing. Use a

“Wide-Open” smooth jaw adjustable, or a 34 mm open-end wrench to loosen the throttle body lock nut. LEFT HAND THREAD, Turn clockwise.

By hand, with a firm grasp on the throttle Body, rotate the throttle body and position the throttle lever assembly to the desired location.

Maintain a firm grasp of the throttle body to prevent rotation, and tighten the lock nut.
NOTICE: LEFT HAND THREAD, Turn counterclockwise. (Torque to 45 N•m/400 in. lbs.)

Throttle Lever Positioning Procedure Complete.

Additional Information: It is important to determine that the tool is working properly and safely before applying the tool to the work.
Place 2-3 drops of the 95842 Dynabrade Air Lube 10W/NR (or equivalent) directly into the air inlet with throttle lever depressed. Follow tool speed check procedure outlined
in Routine Preventative Maintenance section on page 3.