Taylor TX180S, Maintenance Manual

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6-5 6-5 TX / TXH / TXB 180S - 400L (Rev. 4/23/07) TX / TXH / TXB 180S - 400L (Rev. 4/23/07)
CONDENSER CONDENSER
CB25, CB26 CB25, CB26
(10 AMP) (10 AMP)
ACCESSORY (CB, ACCESSORY (CB,
RADIO, ETC.) RADIO, ETC.)
Illustration 6-3. Illustration 6-3. Control Stand Control Stand Circuit Breakers Circuit Breakers
Component Troubleshooting Component Troubleshooting
Alternator. Alternator. The alternator provides 13.8 - 14.4 The alternator provides 13.8 - 14.4
VDC at 130 amps of power for the electrical sys- VDC at 130 amps of power for the electrical sys-
tem and trickle charges the battery when the tem and trickle charges the battery when the
engine is being operated. engine is being operated.
The most effective way to troubleshoot an alterna- The most effective way to troubleshoot an alterna-
tor is with an ammeter on the output of the alter- tor is with an ammeter on the output of the alter-
nator. nator. Another good check Another good check is with a is with a voltmeter voltmeter
across the battery across the battery . . With the engine With the engine operating at a operating at a
moderate speed, the voltmeter reading should moderate speed, the voltmeter reading should
never exceed 15.5 never exceed 15.5 VDC. VDC. If reading ex If reading ex ceeds 15.5 ceeds 15.5
VDC, the alternator is defective and requires VDC, the alternator is defective and requires
replacing. replacing. Should the Should the alternator alternator output drop output drop
below 12 VDC, the alternator is defective and below 12 VDC, the alternator is defective and
requires replacing. requires replacing.
Perform the following procedures below for abnor- Perform the following procedures below for abnor-
mal charging system operation. mal charging system operation.
1. 1. Ins Ins ure th ure th at the un at the un der der cha cha rge rge d cond d cond iti iti on (be on (be low low
12 VDC) has not been caused by accessories 12 VDC) has not been caused by accessories
having been left on for extended periods of having been left on for extended periods of
time. time.
2. 2. Check Check the d the d rive rive belt belt for p for p roper roper tensio tensio n (re n (re fer t fer t o o
Drive Belt Drive Belt Ten Ten sion sion in in Section 1 Section 1 ). ).
3. 3. Ens Ens ure t ure t hat b hat b att att ery i ery i s goo s goo d and c d and c apa apa ble o ble o f f
holding a charge. holding a charge.
4. 4. Inspec Inspec t t the the wirin wirin g g for for defec defec ts. ts. Check Check all all con- con-
nections for tightness and cleanliness, includ- nections for tightness and cleanliness, includ-
ing the slip connectors at the alternator and ing the slip connectors at the alternator and
connections at the battery. connections at the battery.
5. 5. Wit Wit h the ig h the ig nit nit ion sw ion sw itc itc h on and al h on and al l wir l wir ing ha ing ha r- r-
ness leads connected, connect a voltmeter ness leads connected, connect a voltmeter
from: from:
a. a. alt alt ern ern ato ato r “BA r “BA T” t T” t erm erm inal inal to gr to gr oun oun d d
b. b. alt alt ern ern ato ato r #1 r #1 ter ter min min al t al t o gr o gr oun oun d d
c. c. alt alt ern ern ato ato r # r # 2 t 2 t erm erm ina ina l t l t o gr o gr oun oun d d
An infinity reading An infinity reading indicates an open indicates an open circuit circuit
between the voltmeter connection and bat- between the voltmeter connection and bat-
tery. tery. Repair Repair if if required. required.
6. 6. With With all a all a ccess ccess ories ories turne turne d of d of f, c f, c onnect onnect a vol a vol t- t-
meter across meter across the battery the battery . . Operate engine at Operate engine at
moderate speed. moderate speed. If voltage If voltage is 15.5 is 15.5 VDC or VDC or
higher, replace the alternator. higher, replace the alternator.
Circuit Breakers. Circuit Breakers. Circuit breakers are employed Circuit breakers are employed
in the electrical system and act similar to fuses, in the electrical system and act similar to fuses,
protecting the electrical circuits and valuable com- protecting the electrical circuits and valuable com-
ponents from overloads which could damage ponents from overloads which could damage
them. them. Perform the Perform the following troubleshooting following troubleshooting pro- pro-
cedures to troubleshoot a circuit breaker. cedures to troubleshoot a circuit breaker.
1 1 Tur Tur n the n the ignit ignit ion ke ion ke y to y to the “ the “ Igniti Igniti on” p on” p ositio ositio n n
it trips. it trips. If the If the circuit breaker circuit breaker cannot maintain cannot maintain a a
set state, perform the following troubleshooting set state, perform the following troubleshooting
procedures to troubleshoot the automatic circuit procedures to troubleshoot the automatic circuit
breaker. breaker.
1. 1. T T urn t urn t he ig he ig nit nit ion k ion k ey to t ey to t he Of he Of f posi f posi tio tio n. n.
2. 2. Rem Rem ove a ove a ll wi ll wi res f res f rom t rom t he ou he ou tpu tpu t sid t sid e (lo e (lo ad ad
side) of the circuit breaker. side) of the circuit breaker.
3. 3. Tu Tu rn the rn the igniti igniti on key on key to th to th e “Ig e “Ig nition nition ” pos ” pos ition. ition.
If the circuit breaker retrips, the circuit breaker If the circuit breaker retrips, the circuit breaker
is defective and must be replaced. is defective and must be replaced.
4. 4. If t If t he ci he ci rcuit rcuit break break er ma er ma intain intain s a s a set s set s tate, tate, one one
of the of the output circuit output circuit s is s is shorted. shorted. Reconnect Reconnect
the wires one by one to the output side (load the wires one by one to the output side (load
side) until side) until the circuit the circuit breaker trips. breaker trips. Trouble- Trouble-
shoot the circuit of the wire, that tripped the shoot the circuit of the wire, that tripped the
circuit breaker, for a short. circuit breaker, for a short.
5. 5. Isolat Isolat e and e and remov remov e th e th e sh e sh ort ort from from the the circu circu it. it.
Single-Pole, Single-Throw 30 amp Relays Single-Pole, Single-Throw 30 amp Relays
(Illustration 6-4) (Illustration 6-4) . . A relay is A relay is nothing more than an nothing more than an
electrically cont electrically cont rolled switch. rolled switch. Relays are Relays are always always
shown on electrical circuits in a de-energized shown on electrical circuits in a de-energized
state. state. The internal switc The internal switc h, common at h, common at pin 30, pin 30,
toggles between pins 87A (when de-energized) toggles between pins 87A (when de-energized)
and 87 (w and 87 (w hen energized). hen energized). Pins 86 and Pins 86 and 85 control 85 control
the coil of the relay. the coil of the relay.
The most effective way to troubleshoot the relay is The most effective way to troubleshoot the relay is
with an ohmmeter with an ohmmeter . . This can be This can be accomplished by accomplished by
removing the female spade connectors from pins removing the female spade connectors from pins
30 87 and 30 87 and 87A 87A In a de energized In a de energized state ensure state ensure
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