Armature Tests
2. If meter hand moves, armature is grounded and
must be replaced.
TEST FOR SHORTS
c
b
Check armature for shorts by placing on growler and
holding hack saw blade over armature core while ro-
tating armature. If saw blade vibrates, armature is
shorted. After cleaning between commutator bars,
recheck. If saw blade still vibrates, replace armature.
a
d
b
c
a
01441
a - Commutator
b - Armature Core
c - Shaft
d - Growler
01440
Brushes and Brush Holder
a - Hacksaw Blade
b - Armature Core
c - Growler
INSPECTION
Replace brushes and holder when brush leads are
touching guide.
TEST FOR GROUND
Make sure brushes move freely in guides.
1.
With continuity meter, place one lead on arma-
ture core or shaft and other lead on commutator.
a
b
72069
a - Brush Leads
b - Guide
Index
90-823224--2 796
STARTING SYSTEM - 4A-33
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you