Corporal A Marsh's engineering notes

Corporal A Marsh's engineering notes

Handwritten engineering notes recorded during training.

21 page notebook with handwritten notes

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MMarshA542744-151026-01

Form 619.
ROYAL AIR FORCE
Notebook for use in Schools.
[page break]
Climbing +6 Booot [sic] 2700 wpm
QFE Borometric [sic] Pressure
[page break]
Starting [underlined] 1 [/underlined] Check u/c Indicator.
[underlined] 2 [/underlined] Brake Pressure. [underlined] 3 [/underlined] Flap Gauge. [underlined 4 [/underlined] D.R. Compass [underlined] 5 [/underlined] Idle Cut off Switches. [underlined] 6 [/underlined] Check Supercharge Switches [underlined] 7 [/underlined] Exhust [sic] Muffs. [underlined] 8 [/underlined] Bomb Slips, Check leading edge hinge portions. [underlined] 9 [/underlined] Engine starting S0. S1. P0. P1. When engine kick put idle cut off to ON if engine fails t start idle off. Props to fine Rad 60 – 65o oil 20 – 25o oil pressure building up Run up engines, Test intercom, check M to S gear at 4lbs. – drop 1/2 lb. On take off if bomb load flaps at 15o if light 10o flaps. Switch on Pilot head, Do not take off with rad flaps down. Check oxygen. Check that Gauge has clutch in & pressure gauge reads 60lbs/[symbol]. When feathering press feathering button, switch off Idle cut off switch & turn off master cock
Engineers. Log
[underlined] Capt Total Fuel Bomb Load All UP Weight at Take off [/underlined]
[underlined] Airframe No Air Intake Supercharge Auto Controls [/underlined]
[underlined] Pressure Head Control Unlocked DR [/underlined]
[underlined] Target Track miles Sqdn No Date [/underlined]
[table]
[page break]
[deleted] Fuel System [/deleted] Engineers Checks
[underlined] 1 [/underlined] Petrol Head Cover.
[underlined] 2 [/underlined] Leading Edge Secure
[underlined] 3 [/underlined] Chocks in Position
[underlined] 4 [/underlined] Check Jury Strub External
[underlined] 5 [/underlined] General check on coulings.
[underlined] 6 [/underlined] Check oleo extension on unfamiliar machines
[underlined 7 [/underlined] First aid, starb hole
[underlined] 8 [/underlined] Marine distress signals. Port side
[underlined] 9 [/underlined] Fire extinguisher & portable oxygen bottles
[underlined] 10 [/underlined] Bomb slip covers & Escape hatches Fuselage
[underlined] 11 [/underlined] Check pyrotechnics
[underlined] 12 [/underlined] Main oxygen cock. Rear seat position
[underlined] 13 [/underlined] Check emergency air Bottles. [underlined] 1200 lbs [/underlined
[underlined] 14 [/underlined] Hydraulic accumulator 220lbs/[symbol]” no pressure.
[underlined] 15 [/underlined] Check oil reservoir – hydraulic system
[underlined] 16 [/underlined] Fuel balance cock.
[underlined] 17 [/underlined] Main fuse panel – [underlined] Negative earthing switch down [/underlined]
[underlined] 18 [/underlined] Ground to Flight switch.
[underlined] 19 [/underlined] Turn on master switch. [underlined] Eng [/underlined]
[underlined] 20 [/underlined] Check fuel contents, with tail down, chort [underlined] Pond [/underlined]
[underlined] 21 [/underlined] Check fuel [underlined] pumps [/underlined]
Starting XX & XXII
[underlined] 1 [/underlined] Select no 2 tank & put all fuel pumps on
[underlined] 2 [/underlined] Turn on master cocks all engine
[underlined] 3 [/underlined] Check brake pressure.
[underlined] 4 [/underlined] Check U/C lever – locked down, flaps neutral, & bomb doors closed
[page break]
[underlined] 5 [/underlined] Turn flap indicator switch on & U/C warning light
[underlined] 6 [/underlined] Hot & cold air lever to cold.
[underlined] 7 [/underlined] Airscrew to fine
[underlined] 8 [/underlined] Supercharger on M gear.
[underlined] 9 [/underlined] Boost cut out lever up
[underlined] 10 [/underlined] Ground/Flight switch off
[underlined] 11 [/underlined] Booster coil switch on.
[underlined] 12 [/underlined] Start engines & check oil pressure after starting each engine.
[underlined 13 [/underlined] After starting – Turn off booster coil.
[underlined] 14 [/underlined] Select No 1 tanks.
[underlined] 15 [/underlined] Ground/Flight switch to flight.
[underlined] 16 [/underlined] Wait for minimum temps & run up & test, checking both vacuum pumps.
Cross Checks
[underlined] 1 [/underlined] Bomb doors closed
[underlined] 2 [/underlined] H & C air to cold.
[underlined] 3 [/underlined] Nav lights off Before
[underlined] 4 [/underlined] T R 9 normal & special switch – off [underlined] Taxiing [/underlined]
[underlined] 5 [/underlined] Auto main control switch off
[underlined] 6 [/underlined] Mixer Box to isolated position I.C.
[underlined] 7 [/underlined] Auto controls, clutch IN, control out
[underlined] 8 [/underlined] D.R. compass ON & to setting
[underlined] 9 [/underlined] Set altimeter.
[underlined] 10 [/underlined] Check U/C warning lights change over switch
[underlined] 11 [/underlined] Lock magnets switches on
[underlined] 12 [/underlined] IFF switch off (Identification freind [sic] or foe).
[page break]
[underlined] 13 [/underlined] Oxygen regulator & oxygen test.
[underlined 14 [/underlined] T.R.9. Ground Test.
[underlined] 15 [/underlined] Check Jury struts removed
Taxi to take off position
[underlined] 1 [/underlined] Put correct flaps degree down 15o light 25o heavy
[underlined] 2 [/underlined] A/S fully fine friction nut tight
[underlined] 3 [/underlined] Trimmers ([underlined] centralised [/underlined])
[underlined] 4 [/underlined] Check Engineers panel. Main selector cocks to no 1 tanks & all fuel pumps on.
[underlined] 5 [/underlined] Pilot head heater on.
[underlined] 6 [/underlined] Final brake pressure check
[underlined] 7 [/underlined] Turn into wind, Directional Gyro to nought.
[underlined] 8 [/underlined] Turn all lights off
[underlined] 9 Clear engines [/underlined]
[underlined] 10 [/underlined] Check engine temperatures
[deleted] [underlined] 11 [/underlined] [/deleted]
Overide [sic] Switches:- Can only be automatic OP fully open.
Radiator flaps are to be open when the coolent temp reaches 90o or oil 80o C this should keep the oil pressure between 70 & 80 lb/[symbol]”
Following is a guide.
[bracketed] Ground running Taxiing Marshalling for TO. [/bracketed] All engine Rad flaps open
Take off & climb Inboard rad auto. Outboard open.
Cruising – all automatic normally
Only open for any particular engine if necessary
[page break]
Port Outboard, - AR operator for TR1335
& Rear Turret Pump
Port Inboard – RAE compressor
1500 watt generator – general service
Pesco vacuum pump
General service hydraulic pump
Mid under turret pump if fitted
Start Inboard – Maywood compressor – A Bank
1500 watt generator – General services
Pesco vacuum pump
Hydraulic pump general service
Front turret pump
Start Outboard – Mid upper turret pump
Lancaster III Merlin XXVIII Stromberg bomb
Starting procedure Merlin XXVIII
[underlined] 1 [/underlined] Note that pneumatic air pressure is 130 lbs/[symbol]” minimum
[underlined] 2 [/underlined] Set the throttle lever to about 1” from the slow running stop I.E. 1000 to 1200 rpm
[underlined] 3 [/underlined] Close the master fuel cocks of all stationary engines turn main selector cocks to No 2 tanks & turn on tank fuel booster pumps.
[underlined] 4 [/underlined] Put Idle cut off switches to the I.C.O. position switch on booster coil & main ignition switches
[underlined] 5 [/underlined] Turn on master fuel cock of engine to be started, prime in the normal manner, & press starter button
[page break]
[underlined] 6 [/underlined] As soon as the engine fires on the doping fuel [deleted] swit [/deleted] put the I.C.O. switch to the engine on position & the engine should then push up on the carb
[underlined] 7 [/underlined] If the engine fails to pick up immediately put the I.C.O. switch back to the I.C.O. position & carry on as in [underlined] 6 [/underlined]
[underlined] Note [/underlined]:- The fuel booster pumps must never be switched on with the fuel cock open & the engine stationary unless either the ICO switch is in the ICO position or the master fuel cocks are off, as flooding of the engine will result
Pneumatic System:- The radiator shutters are automatically operated by means of a capilliory [sic] & thermostatic switch which allows air to open or close the shutter. The shutters are opened at 115oC & closed at 109oC
If the services develope [sic] a leak the immediat [sic] action is come down to M gear altitudes watch engine temperatures & do not make any steep climbs keep boost pressure down, for I.C.O. no action in air necessary.
[page break]
[underlined] Emergency Air System [/underlined]:-
[diagram]
Controls
Rudder operated by pendulum type pedal fixed to general shafts, the port pedal is connected to upper push-pull rod which is in five lengths. the auxiliary rod connect to upper push pull rod disopears [sic] into the tail-plane & is connected to a bell crank lever on to the other end of bell crank lever is connected two rods which go out-board & are connected to two similar bell crank levers which in turn are connected to actualizing rods which are fixed to the king posts of Rudders.
[page break]
Elevators:- A arm from the control Column has a lug attached to which the middle push-pull rod is connected & this goes underneath the tail plane to a single lug attachment which controls elevators,
[diagram]
[deleted] indecipherable words [/deleted]
[underlined] Jammed Controls [/underlined] :-
Fuses:-
[underlined] 1 [/underlined] 5 amps Nav lights
[underlined] 2 [/underlined] 5 amps Wing Tip resin lamps
[underlined] 3 [/underlined] 5 amps/10 amps Up & Down Ident.
[underlined] 4 [/underlined] 10 amps D.R. Compass
([underlined] 5 [/underlined]) [underlined] 10 amps Stromberg Idle cutoff Merlin XXVIII[/underlined]
([underlined] 5 [/underlined]) 10 amps [underlined] Main feed to IFF Merlin XX
[underlined] 6 [/underlined] 5 amps 1 pilots floodlight
[underlined] 7 [/underlined] 10 amps Interior fuselage lighting, Cockpit, Cabin. Sockets etc
[underlined] 8 [/underlined] 5 amps Landing flap indicator
[underlined] 9 [/underlined] 10 amps Camera
[underlined] 10 [/underlined] 20 amps Fire Extinguishers
[underlined] 11 [/underlined] 10 amps Pressure Head
[underlined] 12 [/underlined] 5 amps Auto Controls
[underlined] 13 [/underlined] 5 amps U/c Indicator lamps.
[page break]
[underlined] 14 [/underlined] 5 amps U/C Warning Buzzer
[bracketed] [underlined] 15 [/underlined] 40 amps[underlined] 16 [/underlined] 40 amp [/bracketed] Wireless operator
[underlined] 17 [/underlined] 20 amp Bcom approch [sic] recievers [sic] (only on latest A/C)
[bracketed] [underlined] 18 [/underlined] [underlined] 19 [/underlined] [underlined] 20 [/underlined] [underlined] 21 [/underlined] [/bracketed] 20 amps Cowl gills for MKII Hercules Lancaster only
[underlined] 22 [/underlined] 20 amp – Landing lamp No 1 (Filament)
[underlined] 23 [/underlined] 20 amp “ “ No 2 (Filament)
[underlined] 24 [/underlined] Dinghy
[underlined] 25 [/underlined] Engine starting & Ignition Booster Coil
[underlined] 26 [/underlined] 10 amp Supercharge Control. (Fuse for warning lamp supercharge control is on Former F in Rose)
[underlined] 27 [/underlined] 10 amp – For Heated clothing excluding turrets.
[underlined] 28 [/underlined] 20 amp – For Automatic Bombsight.
[underlined] 29 [/underlined] 5 amp – Propellor [sic] anti icing Port
[drawings and diagrams]
30. 5 amp Propeller anti icing starboard
31. 5 amp Fuel contents meters & fuel warning lights
32. 20 amp Supply to rear turret
33. 5 amp Radiator Flap P.O.
34. 5 amp -:- P.I.
35. 5 amp -:- S.I.
36. 5 amp -:- S.O.
37. 5 amp Landing lamp motor No 1
38. 5 amp landing lamp motor No 2
39. 20 amp Supply to front turret
40. 5 amp Worth oil dilution
41. 10 amps Electric fuel pumps Stbd No 3. ( 20 amp if pulsometer type fitted)
42. 10 amps Propellor [sic] Feathering PO
43. 10 amps -:- PI
44. 10 amps -:- SI
45. 10 amps -:- SO
46. 10 amps Fuel pumps Port No3 (20 amp if pulsometer fitted)
47.
48. 5 amps Londex relay Start cut out
49. 10 amps Electric fuel pumps Pt 2 (20 amps if pulsometer fitted)
50. 10 amps -:- Pt 1 -:-
51. 10 amps -:- St 1 -:-
52. 10 amps -;- St 2 -:-
53.
54.
55.
56.
Fuse box on former 24 1. 2 amp for Beam approach [?] A/C only
2. 20 amp Supply to Mid upper.
3. 20 amp Supply to Mid under if fitted
4. 10 amp Intercom call lights
Hydraulics:-
Bleeding after emergency air operation:-
Whenever the U/C & flaps have been lowered by compressed air, the following operations must be carefully carried out to ensure that all air has been removed from the system
1. Ensure that the air control cock has been returned to the off position & that the U/C lever is locked in the down position
2. Jack up the A/C & open the bleeder plugs on the down side of the U/C jacks & on the down side of the flap jacks to release the compressed air
3. Establish the cause of the hydraulic failure & rectify it after topping up the oil in the reservoir.
4. Connect test rig to the ground test couplings & start up the rig at its slowest speed.
5. When a clear column of oil free of air issues from the bleeder plugs on the down side of U/C & flap jacks tighten and relock the plugs & build up to cut out pressure.
6. Select flaps up & U/C up. Should oil issue from vent pipe of emergency air valves give the valve concerned a sharp tap with a hide faced hammer so that the valve returns to to its normal position
7. Fully raise & lower the flaps U/C several times to ensure satisfactory operation & to remove all trapped air
[page break]
8. finally disconnect ground test rig. Remove the lifting jacks from the A/C & reinflate the air bottles to 1200 lbs/sq “. Top up reservoir.
Note :- If jacks are not available disconnect U/C rams from the knuckle joint, fit jury struts & bleed as above.
Defects & Remedies
Automatic cut out. defects in this unit which may cause trouble are as follows.
A. Automatic cut out alternating.
B. Failing to cut out at end of jack travel.
Cause of above A(1) leaking control valve
A(2) – Obstruction or local restriction in line
A(3) – Dirty non return valve in cut out
A(4) – Incorrectly adjusted cut out.
B(1) – Defective jack piston
B(2) – Lack of oil
General Hydraulic Faults and Remedies
Loss of Pressure:-
1. All services inoperative thro failure of either EDP’s or emergency hand pump, replace pump concerned.
2. Internal Leaks:- A. sluggish movement of all services due to excessive clearance in engine driven pumps which allows oil to leak from pressure to the suction side of the pump. Replace pumps concerned.
(B) Sluggish movement on a particular circuit due to oil leakage in control valve. Remove & hand test control valve.
(C) Sagging or returning of flaps, when A/C is stationary or is flying, due to oil leakage in the flap jacks or control box.
(D) If after thorough bleeding of the system the time for any circuit to operate is excessive the jack in the defective circuit should be dismantled & inspected. The trouble would probably be caused by oil leakage passed the jack piston
External leaks:- The most likely places for such leaks to occur are at the pipe connections, control valve operating shaft glands or jack piston rod glands. It is sometimes possible to cure such leaks by merely tightening the connection or gland nut concerned. If further tightening is impracticable or proves ineffective the unit or connection must be dismantled & inspected for damage
Note: tightening of the gland nut should not be resorted to unless permitted in the maintenance notes of the unit concerned
[page break]
Retraction test U/C Up 18 - 20 seconds
Down 20 - 22 seconds.
Flaps Up 8 – 10 seconds
Down 10 - 12 seconds.
Bomb doors Up & down 6 seconds.
Emergency Air U/C down 6 seconds.
[page break]
WITH HOT WATER FOR 5 MINS. PROTECTION FROM OTHER PARTS TIN’D BRASS GAUGE 80 MESH
RADITATERS [SIC]
A TYPE SOLDER 170[DEGREE] C GALLERY TYPE COPRO NICHOL [SIC]
B “ 210[DEGREE] C TUBE FLOW TEST 15 GALS PER ?
1. AFTER REPAIR USE CAUSTIC SODA 2[PERCENT]
2. 5[PERCENT] CHROMIC ACID .75[PERCENT] PHOSPORES [SIC] SYROP BT WEIGHT
3. WASH WITH WATER
PRESURE [SIC] TEST
FILL WITH WATER (COLD) AND AD [SIC] APPROPATE [SIC] PRESSURE FOR ½ HOUR HOT WATER FOR 10 MINS COLD WATER 5 MINS AFTER EACH TIME MESSURE [SIC] TO SEE IF IN ALLOWED DISTORTION. O.K.
[page break]
COOLANTS
[table of constituents of the various forms of anti freeze]
AMAL PRESURE [SIC] REGULATING VALVE
THE PURPOSE IS TO REGULATE THE FUEL SUPLY [SIC] TO THE CARB AT A PREDETERMD [SIC] FIGURE IRRESPECTIVE OF THE NDELIVERY PRESURE [SIC] OF THE FUEL TANK WHEN s/c IS EMPLOYED THE BALLANCE [SIC] CONNECTION PROVIDED ON THE DIAPHRAM COVER SHOULD BE CONNECTED TO THE AIR INTAKE SO THAT THE FUEL PRESSURE WILL BE REGULATED RELATIVE TO THE INTAKE PRESURE [SIC]
[page break]
[table showing FE log for a flight calculating fuel required]