Drive Motor 36 Volt
PS
S1.2
1700
F-code
Section
C-code
Version no
T-code
001
OE35
© BT Products
81
Service Manual
1997-10-21
(see illustration) using a steel strip or hacksaw blade to
locate any shorted windings.
Check for shorted windings by slowly rotating the
armature in the growler while holding the strip or blade
so that it passes over each armature core slot. If a
winding is shorted, the strip or blade will vibrate and
the blade will get hot.
5. Check commutator bars for any signs of burning. If
deep burned sections are evident, either in the brush
track or on the riser ends of the commutator bars, an
open or short circuit in the armature windings is
indicated.
2.6. Frame and Field Assembly
Check the condition of all insulation. If the insulation on the
field coils appears blackened or charred, the serviceability of
the coils is questionable. Burned or charred insulation is a
result of coil overheating due to overloading conditions, or
grounded or shorted coil windings. Check the condition of all
other insulation such as brush rigging, under coil connections
and around terminal studs.
2.6.1. Testing
After thorough inspection, the Frame and Field Assembly
should be checked for grounded, open or shorted circuits.
Grounded and open circuits can be checked using a test light.
Most commercial growlers incorporate a test light as shown in
opposite illustration.
Grounded Circuit
Touch one test lead to a clean bare metal spot on the
frame and check all terminals with the other lead. If a
grounded condition exists, the test light will light.
NOTE! If the armature has been turned and undercut
prior to testing, check for and remove any
copper
buildup
or filings between
commutator bars and at the commutator
riser. This condition will cause an armature to
check shorted and usually results from a dull
undercutting tool.
Return
Summary of Contents for OE35
Page 2: ...Return ...
Page 10: ... BT Products 8 Table of Contents Return ...
Page 331: ...Return ...
