Alternator Specifications; Torque Specifications; Rectifier Specifications - Kohler 6VSG Service Manual

1.5 Alternator Specifications

Alternator Specification
Number of poles
Phase
Number of leads
Excitation method
Voltage regulator type
Coupling type
Insulation (stator)
Winding material
Bearing, number, and type
Circuit protection
Stator resistance, ohms,* cold
48V - 1-2, 2-3, 3-1
36V - 1-2, 2-3, 3-1
24V - between any 2 leads
Stator output voltage with engine running at 2300 rpm
No Load, Minimum
48V - 1-2, 2-3, 3-1
36V - 1-2, 2-3, 3-1
24V - between any 2 leads
* Most ohmmeters do not give accurate readings when measuring less than 1 ohm. The stator can be considered
good if a low resistance reading (continuity) is obtained and there is no evidence of shorted windings (discoloration).
Do not confuse a low resistance reading with a reading indicating a shorted winding.
Figure 1-3 Alternator Specifications

1.6 Torque Specifications

Figure 1-4
Torque Specifications, 6VSG
Alternator overbolts
Alternator thrubolt
Generator adapter screws
Muffler flange bolts
Oil filter
Spark plug
Rectifier terminal connections
Figure 1-4 Torque Specifications
14 Section 1 Specifications
Nm (ft. lb.)
15 (11)
85 (63)
40 (28)
24 (17.7)
3/4 to 1 turn after
gasket contact
24.4–29.8 (18–22)
1.5–2.5 (1.1–1.8)
Figure 1-3
24V
Three-phase
Permanent magnet
Hybrid
Direct
Epoxy varnish, vacuum impregnated
Class 180 (H)
Copper
1, sealed ball
125 amps 175 amps
0.002 0.005
18V

1.7 Rectifier Specifications

Figure 1-5
Specification
Rated Voltage, V
Rated Current, A
Surge Current, A
Insulation Voltage VAC,
1 minute
Forward Voltage Drop
Thermal Resistance, °C/W
Figure 1-5 Rectifier Specifications
36V 48V
24
3
250 amps
0.009
27V 36V
24V 36V and 48V
800
100 200
2000
2500
1.35 1.20
0.35 0.10
TP-6844 1/13