____
(1)
Make sure that the C/Bs 1GG and 2GG are closed
(2)
Open, safety and tag the C/Bs 3GG and 4GG
(3)
On the panel 402VU, put the A/SKID & N/W STRG switch in OFF position
(4)
Disconnect the connector from the RVDT 3GC
(5)
Connect the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST between the connector and the RVDT 3GC.
(6)
On the panel 402VU, put the A/SKID & N/W STRG switch in ON position
(7)
Connect a AC voltmeter
(8)
Stage 1:
(a)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST
(18) set the selector switch to U1.
(b)
Record the voltage (U1).
(c)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST
(18) set the selector switch to U2.
(d)
Record the voltage (U2).
(e)
From the voltages U1 and U2, calculate the voltage U: U = U1 - U2
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(9) If the voltage U is not equal to 0 +/- 20mV, adjust the gear box:
(a)
Remove the RVDT 3GC (16) (Ref. TASK 32-51-19-000-001).
(b)
On the ADJUSTING TOOL - NWS GEARBOX (F26630200) (13), loosen the two knurled adjusters (14) so that the inner part of the ADJUSTING TOOL - NWS GEARBOX (13) can turn freely.
(c)
Install the ADJUSTING TOOL - NWS GEARBOX (13) on the N/WS gearbox
(10)
-put the stud (22) of the ADJUSTING TOOL - NWS GEARBOX (13) in the drive slot (23) of the gearbox plate (12),
-attach the ADJUSTING TOOL - NWS GEARBOX (13) on the gearbox
(10) with the screws (15).
(d)
Install the RVDT 3GC (16) (Ref. TASK 32-51-19-400-001)
- engage the spigot (20) in the hole (21) on the ADJUSTING TOOL -NWS GEARBOX (13),
-make sure that it is flush with the N/WS gearbox (10).
NOTE : Lightly lubricate the packing of the sensor (16) with
____
COMMON GREASE (Material No. 04-015).
(10)
Stage 2:
(a)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST
(18) set the selector switch to U1.
(b)
Record the voltage (U1*).
(c)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST
(18) set the selector switch to U2.
(d)
Record the voltage (U2*).
(e)
From the voltages U1* and U2*, calculate the voltage U*: U* = U1* - U2*
(11)
Stage 3:
(a) Calculate the algebraic value T that has been introduced with the ADJUSTING TOOL - NWS GEARBOX (13) installed between the RVDT 3GC
(16) and the N/WS gearbox (10):
T = U - U*
(12)
Remove the RVDT 3GC (16) (Ref. TASK 32-51-19-000-001).
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(13)
Carefully loosen the screws (11) through elongated holes of the ADJUSTING TOOL - NWS GEARBOX (13). Leave the ADJUSTING TOOL - NWS GEARBOX (13) installed.
(14)
Install the RVDT 3GC (16) (Ref. TASK 32-51-19-400-001).
(15)
Stage 4:
(a)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (18), set the selector switch to U1 and then U2.
(b)
On the ADJUSTING TOOL - NWS GEARBOX, adjust the two knurled adjusters (14). (this will move the drive plate (12) of the gearbox (10)) until you get:
U1 = U2 (plus or minus 10mV)
This figure is the value U (reference)
NOTE : When you turn the knurled adjusters, the gear box plate
____ (12) moves and changes the secondary voltages U1 and U2. When you turn the knurled adjuster:
-
in one direction, U1 increases and U2 decreases,
-
in the other direction, U2 increases and U1 dcreases.
(16) Stage 5:
(a)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (18), set the selector switch to U1.
(b)
Adjust the two knurled adjusters (14) again (this will compensate the value T put in with the installation of the ADJUSTING TOOL -NWS GEARBOX (13) until you get:
U1 = U (reference) minus (T/2) (plus or minus 10mV) This figure is the value U (final)
(17)
Tighten the two knurled adjusters (14). Make sure that the position of the drive plate does not move.
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