SkyTrak 6036 Service Manual - Manual (Page 212)

Section 10. Electrical System
10-18 Model 6036 S/N 9B0499 and Before
connections which must be clean and tight, brush
wear and the commutator.
After the starter motor has been in service for
some time, remove the starter motor from the
engine and submit it to a thorough bench inspec-
tion by qualified personnel.
1. Brush wear is a fair indication of the amount of
work done by the starter. Replace brushes
when length approaches 5/16" (7,9 mm).
2. Brush spring tension. Correct tension is 30 to
40 oz (0,85 to 1,13 kg). Replace springs if
tension has dropped below 25 oz (0,71 kg).
3. Turn commutator if it is pitted or badly worn.
4. Check bearings for excessive side play of
armature shaft.
5. Check pinion movement.
6. Clean and lubricate the indented bearing
inside the pinion sleeve using Shell SB2628
grease for temperate and cold climates and
Shell Retinex for hot climates.
7. Clean and lubricate the indented bronze
bearing in the intermediate bracket. Use
Ragosine “Molypad” Molybdenised non-creep
oil for this purpose.
i. Installation
1. Position the starter on the flywheel housing,
install three lock washers (9, Fig 10.15) and
three nuts (8), and torque the nuts to 3.4 lb-ft
(4,6 N m).
2. Connect the wires (3 through 6) to the starter
solenoid (7).
3. Connect the positive (+) battery cable (2) to
the starter.
bars. Use an armature tester to test the
armature. Use instructions included with
the armature tester.
(c) Brushes are not making good contact with
the commutator bars. Check for high
insulation between the commutator bars,
broken brush springs, or worn brushes.
19. Low armature shaft speed and low current
draw are indications of:
(a) Dirt or corrosion on connections
(b) Damaged wiring.
(c) Dirty commutator bars.
(d) All of the causes in step 18.
20. High armature shaft speed and high current
draw are indications of a short circuit in the
field coil. It is difficult to find a short circuit in a
field coil. Install a new field coil. Do the No
Load Test again to check for improvement in
the operation of the starter.
g. Starter Field Coil Tests
1. Hold the leads of an ohmmeter against one of
the brushes and the frame of the field coil.
The needle of the ohmmeter must not move.
If the needle moved, install a new field frame
assembly.
2. Hold the leads of an ohmmeter against one of
the brushes and the end of the negative
ground cable. The needle of the ohmmeter
must move. If the needle did not move,
install a new field coil frame assembly.
h. Periodic Maintenance
The starter motor requires no routine maintenance
beyond the occasional inspection of the electrical
1. Hex Nut
2. Lock Washer
3. Battery Positive Lead Cable
4. Hex Nut
5. Lock Washer
6. Starting Motor Feed Cable
7 Hex Nut
8. Lock Washer
9. Terminal “S” from Neutral
Start Switch
10. Self-locking Hex Hut
11. Tooth Type Lock Washer
12. Flat Washer
13. Capscrew, hex hd
14. Starting Motor Relay
15. Capscrew 16. Lock Washer
17. Relay Mounting Plate
Fig. 10.22 Starting Motor Relay
1
2
6
4
5
9
7
8
14
15
16 17 11 12 13
3
14
10
MA1051