Electrical System; Alternator And Regulator; Fan Shaft - Kubota L185 Shop Manual

Paragraphs 59-60
FAN SHAFT
Model L185
59. To remove cooling fan and shaft
assembly, drain cooling system and
remove radiator. Remove fan belt and
fan. Remove retaining nut (8-Fig. 67)
and withdraw fan shaft (2), pulley (4)
and bearings (5).
Renew parts as needed. Reinstall fan
shaft assembly by reversing removal
procedure.
ELECTRICAL
SYSTEM
ALTERNATOR AND REGULATOR
All Models
60. TESTING. To check charging
system, first disconnect wiring connec-
tor plug from alternator. Turn main
Fig. es^Exploded view of
water pump used on Models
L245, L295 and 1305.
1. Nut
2. Fan
3. Pulley
4. Retaining ring
5. Bearing
6. Key
7. Shaft
8. Bearing
9. Retaining ring
10. Body
11. Gasket
12. Slinger
13. Seal assy.
14. Impeller
Fig. 66—Exploded view of
water pump used on Models
L285 and L345.
1. Body
2. Gasket
3. Seal assy.
4. Impeller
5. Slinger
6. Nut
7. Lockwasher
8. Pulley
9. Snap ring
10. Bearing
11. Key '
12. Shaft
13. Bearing
14. Snap ring
15. Fan
16. Lock plates
KUBOTA
switch on, then measure voltage across
E and F terminals (Fig. 68) of connec-
tor. Voltage should be at least 12 volts
(battery voltage).
Check alternator no-load output as
follows: Connect jumper lead between F
and B terminals (Fig. 69) and ground E
terminal to alternator frame. Connect
voltmeter across B and E terminals as
shown. Start engine and operate above
1300 rpm, then turn main switch off and
disconnect ground cable from battery to
make certain only alternator output
voltage is indicated on voltmeter. Alter-
nator voltage should be at least 14 volts.
Measure resistance of rotor coil, slip
ring and brush by connecting an ohm-
meter across terminals F and E (Fig.
70), Resistance should be six ohms and
maximum allowable is 10 ohms.
If alternator does not meet test
specifications, remove and overhaul.
To check regulator cut-in voltage,
reconnect wiring connector to alter-
nator. Connect voltmeter across N ter-
flg, 67~Exploded view of
cooling fan and shaft
assembiy used on Model
L185.
1. Fan
2. Fan shaft
3. Key
4. Pulley
5. Bearing
6. Snap ring
7. Spacer
8. Nut
Coupler
N
Fig^ Q8—Disconnect wiring connector from
alternator and check battery voltage across con-
nector terminals E and F.
fig, 69—Connect jumper wires and voltmeter to
alternator as shown. Disconnect battery ground
cable and turn off main switch during test so on-
ly alternator output voltage will be measured.
Refer to text.
fplg, 70—Connect ohmmeter to E and F ter-
minals of alternator to check resistance of rotor
coilf slip ring and brush.
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