(a) Use the soft wipers to clean the damaged area.
NOTE: Rub the damaged area carefully to prevent scratches.
____
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737-300/400/500MAINTENANCE MANUAL
(b) Remove the burr edge as follows: 1) Apply the lubricant to the burnishing tool. 2) Move the burnishing tool in the direction of the scratch to
move the clad aluminum material into the defective area.
NOTE: Keep the area that you burnish to a minimum.
____
3) Rub the area with the burnishing tool area until the surface is smooth.
NOTE: This will reduce the stress on the surface.
____
4) If the burnished area is smooth with the adjacent surface, no more work is necessary. 5) If the burnished area is not smooth with the adjacent surface, continue as shown in PROCEDURE II.
F. Put the Airplane Back In Its Usual Condition
S 842-036
WARNING: FAILURE TO REMOVE COVERS FROM PITOT STATIC PROBES BEFORE FLIGHT
_______ MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
CAUTION:_______REMOVE ALL COVERS. ENGINES SHOULD NOT BE OPERATED WITH COVERS IN PLACE BECAUSE THE COVERS CAN COME OFF AND DAMAGE THE ENGINES.
CAUTION: MAKE SURE THE PITOT PROBE COVER IS IN GOOD WORKING CONDTION
_______ WITH NO EVIDENCE OF DAMAGE, ESPECIALLY FRAYING AROUND THE COVER OPENING. FRAYED FIBERS FROM THE COVER COMBINED WITH OTHER SUBSTANCES SUCH AS DIRT, GREASE AND FLUIDS CAN CAUSE OBSTRUCTION IN THE PROBE.
(1) Remove covers from the following components:
(a)
Pitot static probes
(b)
Engine inlet, fan exhaust, and turbine exhaust (Ref 71-00-03)
(c)
Brakes
(d)
Tires
S 022-037
(2) Remove the "PITOT PROBES COVERED" tag from the left control wheel in the flight deck.
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S 842-038
WARNING:_______ FAILURE TO REMOVE BARRICADE TAPE AND VINYL ADHESIVE TAPE FROM
THE STATIC PORTS BEFORE FLIGHT MAY CAUSE LARGE ERRORS IN
AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS, WHICH MAY LEAD
TO LOSS OF SAFE FLIGHT.
CAUTION: REMOVE ALL BARRICADE TAPE, COVERS, POLYEHTYLENE SHEET AND VINYL
_______ ADHESIVE TAPE. ENGINES SHOULD NOT BE OPERATED WITH COVERS IN PLACE BECAUSE THE COVERS CAN COME OFF AND DAMAGE THE ENGINES.
(3) Remove all barricade tape, covers, polyethylene sheet and vinyl adhesive tape from the following openings:
(a)
Static ports
1) Inspect each static port and if necessary use naphtha or equivalent, and a clean dry rag to remove all tape residue, dirt and other contaminants around the static ports.
(b)
Surge tank and fuel tank vents
(c)
APU exhaust duct outlet port
(d)
Forward outflow valve port (AMM 21-43-11)