Western Thrust Washer Kit - Prestolite 2 Terminal Motor #56641/56668 Installation guide

Type
Installation guide
THRUST WASHER KIT – PRESTOLITE 2 TERMINAL MOTOR 56641 or 56668
Lit. No. 56644, Rev. 01 1 July 1, 2008
Installation Instructions
Current style armatures with a bushing on the drive
end use only the thick ber washer. (See Figure 1.)
Early style armatures with a retaining ring on the drive
end use a thin steel washer between the retaining ring
and the thick ber washer. (See Figure 2.) Always
replace retaining ring when replacing thrust washers.
Install retaining ring with sharp edges toward armature
windings. Make sure retaining ring is fully seated in
shaft groove.
Figure 1
Steel
Washer
Fiber
Washer
Retaining
Ring
Figure 2
Fiber
Washer
Bushing
1. Loosen motor thru-bolts and nut on positive stud.
Gently tap end cap loose. Tap stud bushing out
of slot in cap and remove cap with bolts. Remove
thrust washers from commutator end of armature
in order.
2. Remove motor housing and armature together
from ange or valve block. Do not allow armature
to fall out of brushes. Remove thrust washer(s)
from drive end of armature in order.
3. Reassemble motor with new thrust washers of
the same size and quantity in the same order
as removed. Tighten thru-bolts to 55–65 in-lb.
Tighten positive stud nut and battery cable nuts to
50–60 in-lb. Armature should have a slight amount
of end play when motor is assembled to ange or
valve block.
Lit. No. 56644, Rev. 01 2 July 1, 2008
56641 or 56668
Copyright © 2008 Douglas Dynamics, L.L.C. All rights reserved. This material may not be reproduced or copied, in whole or in part, in any printed, mechanical,
electronic, lm or other distribution and storage media, without the written consent of the company. Authorization to photocopy items for internal or personal use by
the company's outlets is granted.
The company reserves the right under its product improvement policy to change construction or design details and furnish equipment when so altered without
reference to illustrations or speci cations used herein. The company and the vehicle manufacturer may require and/or recommend optional equipment for snow
removal. The company offers a limited warranty on the snowplow and accessories. See separately printed page for this important information.
Printed in U.S.A.
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Western Thrust Washer Kit - Prestolite 2 Terminal Motor #56641/56668 Installation guide

Type
Installation guide

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