Club Car 2005 Precedent, Техническое обслуживание и сервис

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MOTOR (MODEL EJ4-4001) Reconditioning the Motor
2005 Precedent IQ System Electric Golf Car Maintenance and Service Manual Page 15b-11
15B
RECONDITIONING THE MOTOR
See General Warnings, Section 1, Page 1-1.
Motor reconditioning must be performed by a qualified motor repair technician. The use of proper tools and
procedures is absolutely essential for successful motor reconditioning.
Motor Specifications
Any rework must be performed by a qualified technician. Motor service specifications are listed in the follow-
ing table.
MOTOR ASSEMBLY
See General Warnings, Section 1, Page 1-1.
1. Replace the bearing.
1.1. Use an arbor press to install a new bearing into the end cap. To help avoid damaging the bearing,
apply pressure only to the outer race when installing the bearing.
1.2. Install the retaining ring to secure the bearing (Figure 15b-11, Page 15b-6) .
2. Install the brushes and brush rigging. See following NOTE.
NOTE: When installing new brushes, remove and replace brushes one at a time. This method ensures the
terminals and brushes will be properly positioned in the rigging.
When replacing brushes, replace all four brushes. Never replace only two.
Install the brushes in the same rigging 180° apart from each other.
2.1. Insert the brushes into the brush rigging as shown (Figure 15b-16, Page 15b-12) .
2.2. Insert the two terminal posts through insulators (4) in the end cap (11) wall at the A1 and A2 posi-
tions (Figure 15b-15, Page 15b-10) .
2.3. Place external insulators (5) and washers (6) on each terminal post, and secure terminal with nuts
(7). Tighten nuts (7) to 100 in-lb (11.3 N·m). Ensure that the terminal posts do not rotate when tight-
ening the nuts
(Figure 15b-15, Page 15b-10) .
2.4. Secure the brush rigging to the end cap with two screws. Tighten the screws to 25 in-lb (2.8 N·m)
(Figure 15b-10, Page 15b-6) .
ITEM SERVICE LIMIT
Commutator diameter (minimum) 2.80 in. (71.10 mm)
Commutator concentric with
armature shaft within
0.003 in. (0.08 mm)
Bar to bar runout should not
exceed
0.005 in. (0.013 mm)
Undercut of segment insulator
after machining commutator
0.040 in. (1.0 mm)
Armature resistance at
75 °F (24 °C) 0.012 ohms between
bar 1 and bar 15
Field coil resistance at
75 °F (24 °C)
1.75 ohms