PNEUMATIC STARTING SYSTEM - TROUBLE SHOOTING
1. General
A. In trouble shooting the pneumatic starting system, the engine bleed air valves and air conditioning isolation shutoff valves must be in the open position. A check should be made (switches on forward overhead panel) to assure valves are open prior to attempting to motor engine. If any valves are closed, ac electrical power is required to open the valves.
500
May 15/67 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 80-11-0 Page 101
2. Trouble Shooting Charts
5B6
80-11-0 Page 102 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 20/82
530
May 01/76 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 80-11-0 Page 103
EFFECTIVITY
AIRPLANES WITH START VALVE OPEN LIGHT ON CENTER INSTRUMENT PANEL
5B6 80-11-0 Feb 20/86 Page 104
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
PNEUMATIC STARTER - MAINTENANCE PRACTICES
1. Preservation of Starter
A. General
(1) The pneumatic starter should be preserved if it is going to be out of service for a prolonged period of time.
B. Equipment and Materials
(1) Corrosion Preventive Compound, MIL-C-8188, Grade A
C. Prepare Starter for Preservation
(1) Drain all lubricating oil from starter oil sump by removing oil fill and drain plugs and allowing starter oil sump to drain completely.
WARNING: PROLONGED CONTACT OF LUBRICATING OIL WITH SKIN MAY CAUSE DERMATITIS, OIL WILL STAIN CLOTHING AND SOFTEN PAINT. SKIN MUST BE THOROUGHLY WASHED AFTER CONTACT AND SATURATED CLOTHING MUST BE REMOVED IMMEDIATELY. PAINTED SURFACES ON WHICH OIL HAS BEEN SPILLED SHOULD BE CLEANED IMMEDIATELY.
D. Preserve Starter
(1)
Replace oil drain plug and refill starter oil sump using approximately 150 cubic centimeters of corrosion preventive compound. Replace oil fill plug.
(2)
Rotate starter slowly in all directions so that all internal surfaces are thoroughly coated with corrosion preventive compound. Manually turn starter output shaft several revolutions in both directions.
(3)
Remove oil fill and drain plugs and allow corrosion preventive compound to drain.
(4)
Replace starter oil fill and drain plugs and tighten securely.
(5)
Cover all openings and connections on unit with protective plugs and covers, and wipe all oil, grease, or dirt from external surfaces.
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May 15/67 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 80-11-11 Page 201
2. Depreservation of Starter
A. General
(1) A replacement starter must always be depreserved prior to being installed on an engine.
B. Equipment and Materials
(1) Lubricating Oil, MIL-L-7808, or P&WA Specification No. 521 (See P&WA Service Bulletin No. 238.)
C. Depreserve Starter
(1)
Remove oil fill and drain plugs and allow preventive compound to drain. Replace oil drain plug.
(2)
Fill starter oil sump with 150 cubic centimeters of lubricating oil.
WARNING: PROLONGED CONTACT OF LUBRICATING OIL WITH SKIN MAY CAUSE DERMATITIS, OIL WILL STAIN CLOTHING AND SOFTEN PAINT. SKIN MUST BE THOROUGHLY WASHED AFTER CONTACT AND SATURATED CLOTHING MUST BE REMOVED IMMEDIATELY. PAINTED SURFACES ON WHICH OIL HAS BEEN SPILLED SHOULD BE CLEANED IMMEDIATELY.
(3)
Replace oil fill plug and rotate starter in all directions so that all internal surfaces are thoroughly coated with lubricating oil.
(4)
Remove lubricating oil fill and drain plugs and allow starter oil sump to drain completely. Starter must be held in horizontal position with drain hole down for complete draining.
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