Taylor THDC-954, Руководство по обслуживанию

Страница: 84 / 100

6-15 6-15 THDC / THDCP - 954 / 955 / 974 (Rev. 06/03) THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
swit switch (S5). ch (S5). Heater swi Heater switch (S5) is power tch (S5) is powered by cir- ed by cir-
cuit break cuit breaker (CB8). er (CB8). There is a diode betwee There is a diode between cir- n cir-
cuit break cuit breaker (CB8) and heater s er (CB8) and heater switc witch (S5). h (S5). Its pur- Its pur-
pose is to prevent an induced voltage generated pose is to prevent an induced voltage generated
by the heater fan motor (B5), which could prolong
by the heater fan motor (B5), which could prolong
engine shut down, after the ignition switch (S1) is engine shut down, after the ignition switch (S1) is
turned to the Off pos turned to the Off position. ition. With the heater s With the heater switc witch h
(S5) in the Low / High position, 12 VDC will be (S5) in the Low / High position, 12 VDC will be
present on wire #43 to the heater fan motor (B5)
present on wire #43 to the heater fan motor (B5)
for low speed oper
for low speed operation. ation. With the heater s With the heater switch witch
(S5) in the High position, 12 VDC will be present (S5) in the High position, 12 VDC will be present
on wire #44 to the heater fan motor (B5) for high
on wire #44 to the heater fan motor (B5) for high
speed operati
speed operation. on. The heater fan m The heater fan motor (B5) otor (B5) is is
connected to the chas connected to the chassis ground by wi sis ground by wire #11. re #11. The The
heater fan motor (B5) will circulate air through a heater fan motor (B5) will circulate air through a
heater coil (which is heated by the engine coolant)
heater coil (which is heated by the engine coolant)
and into the cab.
and into the cab.
Air Condit Air Conditioner / ioner / Heater Unit Heater Unit (B7, Illustration (B7, Illustration
6-16) 6-16) .. The air conditioner / heater unit (B7) is The air conditioner / heater unit (B7) is
powered by circ powered by circuit breaker (C uit breaker (CB16). B16). T Two power wo power
wires #72 are sent from the circuit breaker (CB16) wires #72 are sent from the circuit breaker (CB16)
to the air conditi to the air conditioner / heater unit (B7) oner / heater unit (B7). . This is This is
required to deliver the sufficient amperage to the required to deliver the sufficient amperage to the
air conditi
air conditioner / heater oner / heater. . All control All controls to the air con- s to the air con-
ditioner / heater unit (B7) are internal to the air ditioner / heater unit (B7) are internal to the air
conditioner / heater unit (refer to
conditioner / heater unit (refer to Section 20A Section 20A for for
additional information on the air conditioner / heat- additional information on the air conditioner / heat-
er unit).
er unit).
Forward Alarm Forward Alarm (LS4, Illustrations 6-16, 9C-2, and (LS4, Illustrations 6-16, 9C-2, and
29-30) 29-30) .. The forward alarm circuit is designed to The forward alarm circuit is designed to
emit an audible alarm when the shifter is in the emit an audible alarm when the shifter is in the
forward position and the forward alarm circuit has
forward position and the forward alarm circuit has
been activated.
been activated. The forward alar The forward alarm circ m circuit is con- uit is con-
trolled by two switches, the forward alarm key trolled by two switches, the forward alarm key
switch (S14) and the forward alarm toggle switch
switch (S14) and the forward alarm toggle switch
(S10).
(S10). The forwar The forward alarm mode key s d alarm mode key switch (S witch (S14) 14)
is an on and off swi is an on and off switch. tch. When the forwar When the forward alarm d alarm
mode key switch (S14) is in the Automatic Posi- mode key switch (S14) is in the Automatic Posi-
tion, the contac tion, the contacts of the swi ts of the switch are clos tch are closed. ed. When When
the forward alarm mode key switch (S14) is off the forward alarm mode key switch (S14) is off
(Operator Controlled Mode), the contacts of the
(Operator Controlled Mode), the contacts of the
swit
switch are open. ch are open. With the forw With the forward alarm m ard alarm mode ode
key switch (S14) turned to the Automatic Position, key switch (S14) turned to the Automatic Position,
the forward alarm (LS4) will always be energized, the forward alarm (LS4) will always be energized,
sounding an audible alarm any time the shifter is sounding an audible alarm any time the shifter is
placed in the forw
placed in the forward position ard position. . With the forw With the forward ard
alarm override switch (S14) turned to the Operator alarm override switch (S14) turned to the Operator
Controlled position, the forward alarm toggle
Controlled position, the forward alarm toggle
switch (S10) can activate the forward alarm circuit
switch (S10) can activate the forward alarm circuit
when the shifter
when the shifter is in the forw is in the forward position. ard position. This This
allows the operator to determine when or when allows the operator to determine when or when
not to use the forward alarm ci
not to use the forward alarm circuit. rcuit. With the shift With the shift--
er in the forward position, 12 VDC is sent on wire er in the forward position, 12 VDC is sent on wire
#306 to pin 14 of forwa
#306 to pin 14 of forward rel rd relay (K17) ay (K17). . Grou Ground to nd to
ener energiz gize K17 is suppli e K17 is supplied by either S1 ed by either S10 or S14. 0 or S14. 12 12
VDC is supplied by circuit breaker (CB19) at all VDC is supplied by circuit breaker (CB19) at all
tim
times to pin 9 (comm es to pin 9 (common pin) of K17. on pin) of K17. When K17 When K17
energizes, the 12 VDC at pin 9 will pass out pin 5 energizes, the 12 VDC at pin 9 will pass out pin 5
to LS4 (forward alarm unit), energizing it.
to LS4 (forward alarm unit), energizing it.
WARNING: WARNING: See the information in the See the information in the
Operator’s Guide Operator’s Guide and and Safety Check Safety Check concerning concerning
selecting the selecting the appro appropriate mode priate mode of operation. of operation.
Reverse Alarm Reverse Alarm (LS3, (LS3, Illust Illustration 6-16 ration 6-16). ). The The
reverse alarm circuit is designed to emit an audi- reverse alarm circuit is designed to emit an audi-
ble alarm when the shifter is in the reverse posi-
ble alarm when the shifter is in the reverse posi-
tion.
tion. The reverse alar The reverse alarm circui m circuit is controll t is controlled by the ed by the
shifter shifter. . With the shift With the shifter in the reverse positi er in the reverse position, on,
relay (K18) is ener relay (K18) is energized. gized. Circui Circuit breaker (CB15) t breaker (CB15)
will supply 12 VDC to pin #30 of relay (K18). will supply 12 VDC to pin #30 of relay (K18).
When relay (K18) energizes, the 12 VDC present
When relay (K18) energizes, the 12 VDC present
at pin #30 will pass out pin #87 through wire #39,
at pin #30 will pass out pin #87 through wire #39,
energizi energizing the reverse alar ng the reverse alarm (LS3). m (LS3). Any time 12 Any time 12
VDC is present on wire #319 at relay (K18), pin VDC is present on wire #319 at relay (K18), pin
#86, the reverse alarm (LS3) should be energized.
#86, the reverse alarm (LS3) should be energized.
Refer to Illustration 6-16 for component reference Refer to Illustration 6-16 for component reference
P Prro ob blle em m C Ca au us se e C Co orrrre ec cttiio on n
1. 1. Eng Eng Oil Oil lig light ht (DS (DS1) 1)
is illuminated. is illuminated.
1. 1. Engin Engine oil p e oil pres ressure i sure is bel s below 7 - 10 ow 7 - 10
psi. psi.
2. 2. Defe Defecti ctive engi ve engine oil pr ne oil press essure ure
switch (S17). switch (S17).
3. 3. Ther There is a e is a shor short on w t on wire ire #4. #4.
1. 1. Refe Refer to r to Probl Problem 36 em 36. in t . in the he
Engine Troubleshooting Engine Troubleshooting chart in chart in
Section 1 Section 1 ..
2. 2. Repl Replace en ace engine o gine oil p il pres ressur sure e
switch (S17). switch (S17).
3. 3. Isol Isolate an ate and rep d repair air shor short. t.
https://www.forkliftpdfmanuals.com/