(4)
Restore airplane to normal.
NOTE: After a substantial fluid loss or draining, exercise all systems affected by the hydraulic system being serviced. Then check the hydraulic reservoir for proper fluid level.
536
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Hydraulic Servicing Details 541
12-12-0 Figure 201 Jun 20/84
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
ENGINE OIL TANK – SERVICING
1. General
A. The engine oil tank is serviced with oil per P&WA Specification No. 521 (refer to P&WA Service Bulletin No. 238) through the filler port on the tank. Access to the oil tank is obtained by opening an access panel on the forward left side of the engine cowling.
2. Equipment and Materials
A. Oil per P&WA Specification No. 521 (Ref P&WA SB No. 238)
CAUTION: SOME OILS ARE NOT COMPATIBLE WHEN MIXED. UNLESS COMPATIBILITY IS ASSURED, DO NOT MIX BRAND NAME OILS.
3. Service Engine Oil Tank
CAUTION: THE ENGINE IS SUBJECT TO STATIC INTERNAL OIL LEAKAGE AND UP TO 2 GALLONS OF OIL MAY DRAIN BACK INTO THE ENGINE SUMPS. IN ORDER TO ELIMINATE OVERSERVICING, WHICH COULD RESULT IN A BUILDUP OF SUFFICIENT INTERNAL PRESSURE TO RUPTURE THE OIL TANK DURING ENGINE OPERATION, THE OIL TANK SHOULD BE SERVICED WITHIN 2 HOURS AFTER ENGINE SHUTDOWN.
NOTE: If engine oil tank is not serviced within 2 hours after engine shutdown; the engine shall be motored until oil pressure is steady prior to checking oil level.
A. Remove self-locking filler cap from port in sump cavity.
B. Add approved lubricating oil to fill engine oil tank until oil level is at the lip of the filler port.
NOTE: Any oil spilled in the sump cavity or overserviced will drain to a drain hole on the underside of the engine.
C. Replace filler cap.
CAUTION: INSECURE INSTALLATION OF THE OIL TANK FILLER CAP MAY OCCUR IF INTERNAL STOPS ARE WORN PERMITTING INCORRECT LOCK ROTATION.
CHECK FOR PROPER LUG ENGAGEMENT AFTER CAP IS INSTALLED AND LOCK HANDLE IS TURNED TO "CLOSE" BY ATTEMPTING TO REMOVE CAP. (PULL STRAIGHT OUT ON HANDLE BY HAND OR WITH A WIRE HOOK AS SHOWN IN FIG. 201.) WHEN STOWING LOCK HANDLE, CHECK THAT MACHINED SURFACE OF HANDLE IS TURNED UP AND AS-CAST SURFACE IS DOWN TOWARD CAP. PROPERLY LOCKED AND STOWED, THE LOCK HANDLE PRESENTS A SMOOTH FLAT SURFACE THAT IS FLUSH WITH THE CAP.
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Checking Oil Tank Filler Cap Installation 502
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
CONSTANT SPEED DRIVE -SERVICING
1. General
A. The need and time for oil changes depends on operating conditions and manufacturer's recommendations. Use only clean, recommended oil.
B. A sight gage on CSD indicates oil level in system. A standpipe attached to the engine accessory gearbox indicates oil level in input spline cavity.
2. Equipment and Materials
A. Service Cart -Malabar 53361-2, Malabar Hydraulics Co., 220 West Los Angeles Avenue, Simi Valley, CA 93065
B. Coupling -OMP2506-3, Ozone Metal Products 101-32, 101st St., Ozone Park, Long Island, NY 11416
C. Oil -MIL-L-7808, or any oil conforming to Pratt and Whitney Specification PW-521B Type I or Type II
3. Service Constant Speed Drive Case and Reservoir (Fig. 201)
A. Check oil level at reservoir sight gage. The operating range is within the applicable
crosshatched band.
NOTE: Oil level reading on sight gage of a disconnected drive may indicate more oil than there actually is due to expanded air that may have forced oil from oil cooler into transmission. To obtain a true oil level reading on sight gage, pressure fill transmission, then recheck sight gage.
NOTE: Persistently high CSD oil level readings may be caused by a plugged spline cavity vent or CSD vent valve and leaking oil seals at the CSD and engine gearbox ends of the CSD drive shaft.
Left and right bands are provided to allow for difference in water line of drive on No. 1 or 2 engine.
B. If oil level is below bottom edge of band, service to bottom edge of crosshatched band.
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