(2)
B00130 - Isopropyl Alcohol, TT-I-735
C. References
(1)
21-58-41/401, Equipment Cooling Airflow Detector
(2)
21-58-43/401, Equipment Cooling Low Flow Sensor
(3)
21-58-45/401, EFIS Cooling System Low Flow Sensor
D. Procedure
S 027-023
CAUTION:_______MAKE SURE THAT YOU ARE CAREFUL WITH THE SENSOR. ROUGH MOVEMENT WILL CAUSE DAMAGE TO THE SENSOR.
(1) Remove the equipment cooling airflow detector (AMM 21-58-41/401).
S 027-024
CAUTION:_______MAKE SURE THAT YOU ARE CAREFUL WITH THE SENSOR. ROUGH MOVEMENT WILL CAUSE DAMAGE TO THE SENSOR.
(2) Remove the equipment cooling low flow sensor (AMM 21-58-43/401).
S 027-025
CAUTION:_______MAKE SURE THAT YOU ARE CAREFUL WITH THE SENSOR. ROUGH MOVEMENT WILL CAUSE DAMAGE TO THE SENSOR.
(3) Remove the EFIS cooling system low flow sensor (AMM 21-58-45/401).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-58-47
ALL ú ú 04 Page 701 ú Nov 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 167-022
CAUTION:_______DO NOT USE ROUGH OR METAL TOOLS TO CLEAN THE SENSOR. THESE TOOLS CAN CAUSE DAMAGE TO THE SENSOR.
(4)
Clean the probe end of the low flow sensor with a soft cloth and water, isopropyl alcohol, or dishwashing soap.
S 427-018
(5)
Install the equipment cooling airflow detector (Ref 21-58-41/401).
S 427-019
(6)
Install the equipment cooling low flow sensor (Ref 21-58-43/401).
S 427-020
(7)
Install the EFIS cooling system low flow sensor (Ref 21-58-45/401).
TASK 21-58-47-107-011
3. Clean The Equipment Cooling Blowers
____________________________________
A. General
(1)
The blowers can get nicotine, tar and contamination which can prevent correct blower operation.
(2)
If only the impellers and the air passages are dirty, you can clean them with this procedure.
(3)
If it is necessary to disassemble the blower more to clean it, you must do an overhaul.
(4)
This procedure is applicable for all the blowers in the equipment cooling system.
B. Standard Tools and Equipment
(1)
G00215 Soft bristle brush
(2)
G00528 Wipers - Clean, Lint-free
C. Consumable Materials
(1) B00039 Detergent - Brulin Formula 815MX ú (2) B00074 Solvent, Stoddard - Specification P-D-680, Type I
D. References
(1) 21-58-12/401, Equipment Cooling Blower
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21-58-47
ALL ú ú 05.1 Page 702 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
E. Access
(1) Location Zone
205 Electronic Compartment
F. Procedure
S 027-002
(1)
Remove the blower (Ref 21-58-12/401).
S 037-001
(2)
Remove the nut and the washer at each impeller.
(a) Discard the nuts.
S 987-003
(3) Hold the impeller on opposite sides and move it from one side to the other to remove the impeller from the rotor shaft.
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