Loader Bobcat 773. Manual — part 74
ALTERNATOR (Cont’d)
Rotor Continuity Test
Touch the probes to the slip rings [A].
The ohmmeter should read between 3.065–33.85 ohms.
If there is no continuity replace the rotor.
Rotor Ground Test
Touch one probe to one of the slip rings and the other
probe to the rotor shaft [B].
There should be no continuity.
Replace the rotor if there is continuity.
Rectifier Continuity (Diode) Test
NOTE: In the diode tests there should be continuity
in one direction only. If the diode being
tested shows no continuity or continuity in
both directions, replace the rectifier
assembly.
Touch the probes to the terminals (Item 1) [C] of each
diode and read the meter.
Reverse the probes to check the diode in the other
direction.
There should be continuity in one direction only.
Touch one probe to the diode (Item 1) [D] and the other
probe to the connected heatsink and read the meter.
Reverse the probes to check the diode in the other
direction.
There should be continuity in one direction only.
A
P–01365
C
P–01373
1
1
1
D
P–01370
1
1
1
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773 BICS Loader
Service Manual
B
P–01378
ALTERNATOR (Cont’d)
Rectifier Continuity (Diode) Test (Cont’d)
Touch one probe to the diode (Item 1) [A] and the other
probe to the connected heatsink and read the meter.
Reverse the probes to check the diode in the other
direction.
There should be continuity in one direction only.
Assembly
Reverse the order of disassembly.
Do not assemble the rear case half.
Place the rotor in soft jaws when tightening the shaft nut.
Tighten to 50 ft.–lbs. (68 Nm) torque [B].
Install the rear case half and the remaining parts.
A
P–01390
1
1
1
773 BICS Loader
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Service Manual
B
P–01808
STARTER
Removal And Installation
Stop the engine and open the rear door.
Remove the negative (–) and positive (+) cables from the
battery.
Remove the starter mounting bolt (Item 1) [A] and
disconnect the ground wires from the starter.
Remove the lower mounting bolt (Item 1) [B]. Remove the
negative (–) battery cables and frame ground cable from
the starter (Item 2) [B].
Disconnect the engine harness power wires and positive
(+) battery cable starter solenoid terminal (Item 3), [B].
Disconnect the white wire (Item 4) [B] from the S terminal
on the starter solenoid.
Remove the mounting bolt (Item 5) [B] from the starter.
Remove the starter from the engine.
Installation: Tighten the three mounting bolts to 25–28
ft.–lbs. (34–38 Nm) torque.
Reverse the removal procedure to install the starter.
STARTER (DELCO REMY)
Checking the Starter
The key switch must be in the OFF position.
The battery must be at full charge.
The cable connections on the battery must be clean and
tight.
Connect a jumper wire between S terminal and BAT
terminal [C].
If the starter turns but does not turn the engine, the starter
drive has a defect.
Connect a jumper wire between the M terminal and the
BAT terminal [D].
If the starter turns, the defect is in the solenoid.
If the starter does not turn, the starter is defective.
A
P–03879
1
C
A–01991
Cranking
Motor
Bat
S
M
D
A–01992
Cranking
Motor
Bat
S
M
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773 BICS Loader
Service Manual
B
P–03875
5
4
3
1
2
D–02119
STARTER (DELCO REMY) (Cont’d)
Parts Identification
1.
Screw
2.
Solenoid
3.
Bolt
4.
Lever
5.
Washer
6.
Nut
7.
Plug
8.
Washer
9.
Housing Drive
10.
Washer
11.
Bushing
12.
Ring
13.
Stop
14.
Drive
15.
Drive Support
16.
Support
17.
Drive Shaft
18.
Washer
19.
Washer
20.
Washer
21.
Screw
22.
Brush
23.
Frame Assy.
24.
Gasket
25.
Pin
26.
Armature Support
27.
Bolt
28.
Spacer
29.
Bearing
30.
Armature
31.
Bearing
32.
Spring
33.
Holder Assy.
34.
Brush
35.
Screw
36.
O–ring
37.
Frame
38.
Washer
39.
Screw
40.
Bolt
41.
Ring
1
2
3
4
5
6
10
11
12
13
14
15
16
17
18 20
19
26
25 24
27
23
22
21
21
22
28 29
30
31
32
35
34
34
33
36
37
40
38
39
41
7
8
9
773 BICS Loader
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Service Manual
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