(2)
AMM 29-33-01/101, Hydraulic Fluid Quantity Indicating System
(3)
AMM 29-33-12/401, Hydraulic Fluid Quantity Transmitter/Indicator
B. Access
(1) Location Zone
216 Main Wheel Well, LH
217 Main Wheel Well, RH
C. Procedure
S 866-002
(1)
Release pressure from the applicable reservoir (AMM 29-09-00/201).
S 036-003
(2)
Open the drain valve on the bottom of the reservoir.
(3)
Drain the fluid into a container.
(4)
Close the drain valve.
(5)
Install a lockwire.
S 866-007
(6)
Make sure the applicable circuit breaker is closed:
S 686-004
S 436-005
S 436-006
(a) P6-2 Circuit Breaker Panel
1) OIL QTY IND SYS A
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737-300/400/500MAINTENANCE MANUAL
2) OIL QTY IND SYS B
S 616-008
(7) Slowly fill the applicable hydraulic reservoir with the fluid quantity specified below (AMM 12-12-00/301):
NOTE: The fluid quantities are correct only if all supply and
____
return lines to the reservoir are full.
(a)
The fluid quantity must be 4.8 U.S. GAL (4.0 IMP. GAL) for system A.
(b)
The fluid quantity must be 7.2 U.S. GAL (6.0 IMP. GAL) for system B.
S 216-010
(8) Make sure the transmitter indicator and the cockpit indicator show increasing fluid level as you fill the reservoir.
(a) If the indicators do not show increasing fluid level, replace the transmitter and/or the cockpit indicator (AMM 29-33-12/401).
S 216-009
(9) Make sure the indicators on the transmitters show full when the reservoirs are filled to within | 0.5 U.S. gallon of the nominally full quantities given in step (7).
(a)
When the indicators on the reservoir transmitters show full, make sure that the cockpit indicators show approximately full (100% on EIS indication gauges or F on analog indication gauges).
(b)
If the transmitters and/or the cockpit indicators fail to meet these requirements, replace the discrepant unit(s) (AMM 29-33-12/401).
(c)
If the indicator(s) show zero, do the trouble shooting for the hydraulic fluid quantity indicating system (AMM 29-33-01/101).
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737-300/400/500MAINTENANCE MANUAL
STANDBY HYDRAULIC SYSTEM RESERVOIR LOW QUANTITY SWITCH -
________________________________________________________ REMOVAL/INSTALLATION
____________________
1. General_______
A. There are two tasks in this procedure. There is a task for the removal and a task for the installation of the standby reservoir low quantity switch.
B. The low quantity switch is installed on top of the standby hydraulic reservoir found above the keel beam in the wheel well area.
TASK 29-33-21-004-001
2. Standby Reservoir Low Quantity Switch Removal (Fig. 401)_____________________________________________
A. Special Tools and Equipment
(1)
375530-12 - Quick-Disconnect Coupling Half with approximately 18 inch hose
(2)
B29002-1 - Reservoir Depressurization Valve Lock
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