Motor Assembly/Disassembly Instructions - HiVac Dynorbital -Spirit
®
Important: Manufacturers warranty is void if tool is disassembled before warranty expires.
A Full Service Repair Kit P/N
57098
, is available which includes special repair tools for correct disassembly/assembly of the sander.
To Disassemble:
1.
Disconnect sander from air supply.
2.
Invert the sander, and place the
57092
Repair Collar (supplied in the
57098
Full Service Repair Kit) around the housing and secure in a vise. Padding
can be used on the vise jaws to protect the housing.
Important:
Do not over tighten the sander in the vise. If the sander is held too tight the
removal of the lock ring and air motor will be difficult.
3.
Remove sanding pad with the
50679
26mm Open-end Wrench (supplied with the sander), then remove
59281
Shroud.
4.
Insert
56058
Lock Ring Tool (supplied in
57098
Full Service Repair Kit) into the corresponding tabs of lock ring. Loosen the
59058
Lock Ring
turning it counterclockwise.
5.
Remove the
59058
Lock Ring and the
50659
O-Ring from the air motor assembly.
6.
Remove
01024
O-Ring and
98463
Retaining Ring from motor assembly.
7.
Fasten a 2 in. bearing separator (P/N
96346
available) around the
59051
Cylinder just below the
59077
Rear Bearing Plate. Place the air motor
assembly in a #2 arbor press (P/N
96232
available) so that the separator is resting on the table of the arbor press and with the balancer pointing down.
8.
Use a flat nose 3/16" dia. drive punch as a press tool. Place it against the small end of the motor shaft balancer and push the shaft out of the
upper
58368
Bearing.
9.
Remove the rotor, vanes and rotor key from the motor shaft balancer.
10.
Again fasten the 2 in. bearing separator between
58368
Bearing and the top of the balancer. Rest the separator on the table of the arbor press
and push the motor shaft balancer out of the
58368
Bearing. Remove
59057
“Top Hat” Seal and
59083
Felt from
59076
Front Bearing Plate.
11.
Disassemble the balancer assembly as follows:
a.)
Place motor shaft balancer assembly into a soft jaw vise. Using a thin screwdriver, pick out the end of
95630
Snap Ring and remove. This will
loosen the balancer assembly.
b.)
Screw the threaded portion of the
56056
Bearing Puller (supplied in
57098
Repair Kit) into the
57069
Balancer Shaft and heat the outside of the
motor shaft balancer to approximately 200° F (approximately 10 seconds with a propane torch). Now, using the slider weight, pull
the assembly out.
c.)
Press off
56052
Bearing with a bearing separator and arbor press, remove
59084
V-Seal.
12.
If during step 11, the
56052
Bearing remains in the motor shaft balancer, it can be removed by the heating the shaft balancer again and using either an
inside bearing puller or a blind hole bearing puller.
To Assemble:
Important:
Clean and inspect all parts for defects before assembling.
1.
Assemble the balancer assembly as follows:
a.)
Install
59084
V-Seal onto the balancer shaft. Install with flexible lip of seal facing hex of balancer shaft. Be certain seal is pressed
completely over shaft step. See
Drawing 1
.
b.)
Install
95360
Snap Ring between flange of
59084
V-Seal and hex of balancer shaft.
c.)
Apply 1 drop of #271 Loctite
®
(or equivalent) and spread over several places around inside diameter of
56052
Bearing and the outside diameter
of the
57069
Balancer Shaft.
d.)
Use the
57091
Bearing Press Tool to press
56052
Bearing with seal side toward hex of balancer shaft up to shaft step as shown in
Drawing 1
.
This is a firm press fit for proper retention of bearing.
2.
Place the motor shaft balancer in a soft aluminum or bronze jaw vise with large end pointing up.
3.
Apply 1 drop of #271 Loctite
®
(or equivalent) and spread over several places around the outside diameter of the
56052
Bearing and slide balancer
assembly into the motor shaft balancer until
56052
Bearing is firmly seated at bottom. Squeeze
95630
Snap Ring into groove in motor shaft balancer
to complete the assembly. Remove from vise.
4.
Place the
59083
Felt into the
59057
“Top Hat” Seal.
5.
Install the felt and the “Top Hat” Seal onto the motor shaft balancer so that they are centered as is shown in
Drawing 2
.
6.
Use the small end of the
57091
Bearing Press Tool and the
96232
Arbor Press to install the
58368
Bearing onto the motor shaft balancer as
shown in
Drawing 3
.
7.
Install the
59076
Front Bearing Plate onto the motor shaft balancer, fitting it to the bearing, felt, and “Top Hat” Seal as is shown in
Drawing 4
.
8.
Install the rotor key and the rotor onto the motor shaft balancer.
9.
Lubricate the
56073
Vanes with the
95842
Dynabrade Air Lube (10W/NR or equivalent) and install them into the rotor.
10.
Install the
59051
Cylinder so that the short line-up pin fits into the front bearing plate.
(continued on next page)
5
57091
Bearing Press Tool
Balancer Shaft Assembly
56052
Bearing
59084
V-Seal
Drawing 1
Balancer Shaft Assembly
Motor Shaft Balancer
59057
“Top Hat” Seal
59083
Felt Seal
Drawing 2
Buy parts on line at https://Dynashop.co.uk/ for all things Dynabrade
Buy parts on line at https://Dynashop.co.uk/ for all things Dynabrade
