TP-6881 7/1512 Section 1 Specifications
1.5 Alternator Specifications
Alternator Specification 8RESV(L) 10RESV(L) 12RESV(L)
Frequency Hz 60 60 60
Phase Single-Phase Single-Phase Single-Phase
Number of leads 4 4 4
Excitation method Static Excited Static Excited Static Excited
Voltage regulator type Hybrid Hybrid Hybrid
Coupling type Direct Direct Direct
Insulation (rotor and stator)
Epoxy varnish, vacuum impregnated
Class 180 (H)
Winding material Copper Copper Copper
Bearing, number and type 1, Sealed Ball 1, Sealed Ball 1, Sealed Ball
Circuit protection
Aux. winding circuit breaker (mini-breaker) 20 amps 20 amps 20 amps
Generator AC output line circuit breaker 40 amps 50 amps 50 amps
Rotor resistance, ohms, cold 6.1 6.1 6.8
Stator resistance, ohms,* cold
Single-Phase Leads 1-2, 3-4 .20 .20 .07
11-44 .40 .40 .14
55-66 .80 .80 .70
Stator output voltage with separately excited rotor using 12-volt
battery, minimum
Leads: 1-2, 3-4 135 V 135 V 132 V
11-44 270 V 270 V 264 V
55-66 212 V 212 V 145 V
Rotor field voltage/current readings at rated output voltage, hot
No load 11 V/1.8 A 11 V/1.8 A 12 V/2.0 A
Full load 35 V/5.8 A 42 V/6.9 A 47 V/7.4 A
Brush length, new
19.05 mm
(0.75 in.)
19.05 mm
(0.75 in.)
19.05 mm
(0.75 in.)
* 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.
1.6 Torque Specifications
Torque Specifications,
Nm (ft. lb.)
8/10/12RESV(L)
Alternator overbolts 23 (17)
Alternator thrubolt 33 (24)
Adapter plate bolts 53 (39)
Vibromount bolts 45 (34)
Silencer flange nuts 24.4 (18)
Oil filter
3/4to1turnafter
gasket contact
Spark plug 24.4--29.8 (18--22)
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