4.Using channel lock style pliers with soft jaws, unscrew the spring housing (item 3). Heat may need to be applied to break down the old threadlock to prevent damage to the threads on the spring housing.
5.After the spring housing is removed, use a
6.To install a new bronze wear bushing, first align the hole in the new bushing with the spring housing hole. Press the bushing straight and evenly into place using a block of wood or soft aluminum and a mallet. Bushing should be flush with the end of the shaft when fully seated.
7.Clean all old threadlock from the spring housing and apply new threadlock (Loctite blue 242 or equivalent).
8.Screw the spring housing firmly into place using channel lock style pliers with soft jaws.
9.Reinstall the lock pin, spring and knob and secure with pin.
10.Verifiy the Quick Disconnect Knob operates freely and snaps back into position. If the knob stays in the up position there is binding occurring between the knob, spring, or lock pin.
Motor Reassembly
If the motor required disassembly for servicing, reinstalling the assembly back into the case will be much easier if all internal components are reassembled as a unit first.
Refer to Figure 8 or the Vibrator Motor Assembly illustration on page 22 when performing the following steps.
1.Place the Brush Endbell (item 1, Figure 8) on work surface with bearing pocket up.
2.Place two plastic insulators (items 2) in the holes on the endbell.
3.Slide the Field Assembly (item 4), with the leads toward the endbell, into place ensuring the plastic insulators engage into the field holes.
4.Plug the brush flag leads (see Figure 9, Field Orientation) into the top of the brush holders toward the output shaft end. (See Figure 10).
5.Install the Armature/bearings Assembly (item 5) and Wave Spring (item 3) through the Field and into the endbell bearing pocket.
6.Place the remaining two plastic insulators (items 6) into the holes of the Output Endbell (item 7).
SVA-SERIES — MAINTENANCE
9
8
7
6
6
5
4
2 | 3 |
| 2 |
| 1 |
1.Brush Endbell
2.Plastic Insulator
3.Wave Loading Spring
4.Field Assembly
5.Armature & Bearing Assembly
6.Plastic Insulator
7.Output Endbell
8.Lock Washer
9.Screw
