PNEUMATIC STARTER - INSPECTION/CHECK
1. General
A. Inspection and check of the starter shall include, but is not limited to, the requirement of this section. The inspection and check requirements are inspection prior to installation and periodic inspection.
2. Inspection/Check
A. Prior to Installation
(1)
Visually check for damaged incurred during handling, storage, or shipment. There shall be no evidence of damage.
(2)
Check for engagement clutch operation as follows:
(a)
Grip starter output shaft of the spline and manually apply a sharp torque in the direction opposite to the rotation arrow on the identification plate (clockwise). Relatively large resistance should be felt, this indicates that the reduction gears and turbine wheel assembly are being driven opposite to the normal direction of rotation.
(b)
Manually apply a sharp torque in the direction of rotation arrow (counterclockwise). Relatively light resistance should be felt and ratcheting shall occur, this indicates the engagement clutch is free to operate.
(3)
Visually check that all required lockwire is installed and secure.
B. Periodic Inspections
(1)
Visually check for security of mounting. There shall be no evidence of looseness.
(2)
Visually check pneumatic connections for security and leakage. Pneumatic connections shall be secure and there shall be no evidence of leakage.
(3)
Visually check exhaust duct area for damage. Check turbine wheel assembly for broken or chipped blades or other indications of damage. Replace starter if evidence of damage.
500
May 20/82 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 80-11-11 Page 601
G42847
Start Magnetic Plug 500
80-11-11 Figure 601 May 20/82
Page 602
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(4)
Visually check for lubricating oil leakage. There shall be no evidence of leakage.
(5)
Remove magnetic portion (9/16 inch hexagon) of drain plug and inspect for presence of metal particles (Fig. 601). Presence of metal, either minor or major is unacceptable. If major metal is present internal failure is indicated and starter should be replaced. If minor metal is present, flush starter as follows:
(a)
Drain lubricating oil and service starter (Ref 12-13-41).
(b)
Motor starter for 90 seconds followed by five minutes off for cooling, followed by an additional 30 seconds motoring and five minutes cooling.
NOTE: If cold air (38C (100F) max) is used at starter inlet, there is no time limitation for motoring. However, excessive motoring will shorten service life of starter gears and bearings.
(c)
Drain lubricating oil and recheck magnetic drain plug. Service starter if plug has normal-to-minor metal (Ref 12-13-41).
NOTE: If minor metal reappears at next check replace starter at first opportunity.
(6) Check lubricating oil level, reservice as required.
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May 20/82 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 80-11-11 Page 603
STARTER VALVE - REMOVAL/INSTALLATION
EFFECTIVITY
Starter valve open light pressure switch attached to starter valve.
1. Prepare Starter Valve for Removal
A. Open engine left removable cowl panel (Ref. Chapter 71, Power Plant).
B. Disconnect electrical plug from starter valve.
C. Loosen valve pressure switch, if installed.
D. Disconnect filter line from starter valve.
E. Remove filter from starter valve.
2. Remove Starter Valve (Fig. 401)
A. Open clamp holding starter valve to air supply duct.
B. Open clamp holding starter valve to starter and remove valve but keep valve supported.
C. On start valves having downstream pressure switch, hold pressure switch and turn valve until free of switch threads. This procedure prevents twisting of the pressure switch electrical leads and eliminates removal of the pressure switch.
3. Prepare Starter Valve for Installation
A. Remove shipping covers and caps from all openings of the starter valve.
B. Prior to installation of clamps, clean valve flanges and mating surfaces with a general purpose cleaning solvent. Apply with nonmetallic brush or cloth applicator and wipe dry with lint-free gauze or cloth.
C. On start valves having downstream pressure switch, hold pressure switch and thread and tighten valve onto switch.
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