DRESSTA TD-25M EXTRA, Service Manual

Page: 325 / 595

ELECTRICAL
SECTION 8
Page 49
DRESSTA TD-25M EXTRA
CRANKING MOTOR 42 MT
Fig. 8.17. Testing Hold-in Windings Solenoid Fig. 8.18. Testing Pull-in Windings Solenoids
1. Voltmeter
2. Switch
3. Ammeter
4. Battery
5. Carbon Pile 1. Voltmeter
2. Switch
3. Ammeter
4. Battery
5. Carbon Pile
WARNING! To prevent overheating, do not leave the pull-in winding energized
more than 10 seconds. The current draw will decrease as the winding temperature
increases.
A magnetic switch can be checked in the same manner by connecting across its winding.
o. Brushes Reassembly
To reassemble the brush plate assembly with brushes onto the field frame with armature in place,
lift the brushes up so the spring contacts the
side
of the brush. Assemble to the field frame with the
attaching screw. Lift up springs, and position brushes onto cummutator.
p. Lubrication
All bearings, wicks and oil reservoirs should be saturated with SAE 20 oil. Place a light coat of
lubricant Delco Remy No. 1960954 on the washer located on the shaft between the armature and
shift lever housing.
Sintered bronze bearings used in these motors have a dull finish, as compared to the early type
machined, cast bronze bearings which had a shiny finish.