Plate 15 - Fuel injection pump controls
-5,QrMM< 1. Foot pedal
F{}mlQg 2. Tie-rod
^|y6oj 3. Lever on the lower bracket
*O-1zIlp 4. Lever
S|!)_RL 5. Lower vertical tie-rod
)&:4//}a 6. Upper lever
3a PCi>i!_ 7. Upper vertical shaft
*(6vO{ 8. Lover
kbzzage6L 9. Tie-rod
nIdB, 10. Forked lever
!|6M ,Rk_ 11. Spring
pQ%~u3 12. Hand lever
yf`Nh 13. Fork
kKr|PFz 14. Support for rod
.),ql_sXr 15. Rod
$"&0 16. Supporting bolt
L rV`P)$T 17. Vertical springOn depressing the pedal (#1) the fuel priming lever on the fuel injection pump is operated by means of a system of tie rods and levers.
8CKN^8E On releasing the pedal the spring (#11) returns the control to its original. position provided that the hand lever (#12) does not limit the movement of the tie-rod (#2). The hand lever (#12) is set to a minimum number of engine revs so that on releasing the pedal the engine will not fade.
S <~"\<ED Adjusting the fuel injection pump controls
=" Q5Z6W 1. Disconnect the tie-rod (#2).
P 1`X<A 2. Pull the fuel supply hand lever (#12) right back.
j3{8]D 3. Alter the length of the tie-rod (#2), set the lost motion device (#10) to the extreme rear so that it is in the zero position (the lever resting on the body of the pump).
EIZSV> 4. With the pedal pushed right down (so that it rests on the footboard) join the front end of the tie-rod (#2) to the pedal (#1).
9sYN7x 5. With the bolt (#16) set the pedal (#1) to the extreme forward position so that the fuel supply lever on the pump reaches the stop (#2) (Plate 12) of the set screw.
uk%C:4T 6. Test to see that the travel of the horizontal tie-rod is 18-20 mm.
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! Ra.DSL Plate 16 - Air Cleaner
1haH2F^q3 1. Air Cleaner.
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i 2. Lower vessel
t\LAotTF/ 3. Upper detachable cover.
!ceT>i90h 4. Upper mesh
MZp` 5. Lower mesh
y9W6e" 6. Wire wool.
N"-</kzV Air Cleaner u l[ edp_ (Plate 16)
^6&?R?y The air cleaner serves to purify the air from dust before it enters the cylinders. The air cleaner is supported on brackets welded to the inlet manifold. Thc basic filter element is oiled wire wool. Tanks of the latest modal (with V-2 engine) also have in the transmission compartment two "Cyclone" air cleaners.
PDN3=PAR/A Action of the engine feed system
vY|{CBGbd When the engine is running the fuel feed pump of the rotary type 1 (Plate 13) supplies fuel from the tank to the fuel filter 3 under a pressure of 0.5 -0.7 Kg/cm2. The filtered fuel goes on to the fuel injection pump 5. In conformity with the firing order and the load of the engine, the fuel injection pump forces at high pressure the necessary quantity of fuel into the injectors. Maintenance of the engine fuel system. The main defects of the fuel feed system are due to obstructions in the fuel pipes owing to bad engine maintainece. The following points must be watched :
4wp5ghe 1. In filling the tanks with fuel attention must be paid to the instructions given in chapter VII under the heading "Filling up".
E/x2LYH 2. Every time the vehicle returns from a journey it is necessary to test the tanks, cocks and examine the whole system for damage. To test the air tanks and pipes, apply a pressure of 0.2-0.3 Kg/cm2 and watch the pressure gauge for 2-3 minutes. If after this period the pressure does not subside then there is something wrong with the system.
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14 3. After every 10 hours of engine running it is necessary to examine and clean the mesh filter (#7) (Plate 11) in the distributor cock.
OsS5WY0H 4. After every 25 hours of engine running it is necessary to clean the fuel filter.
pfd||Z 5. After every 50 hours of engine running, the fuel tank drain plugs should be unscrewed and sediment removed.
,S"a ,}8 If any defects occur in the fuel injector pump, the fuel feed pump and the fuel injector pump should be detached and handed over to a base workshop or to a special fitter.
7R9S% The air cleaner should be periodically cleaned. The period depends on the terrain and time of the year. In summer when the atmosphere is dust laden, the air cleaners should be cleaned and oiled after 10 hours of engine running. In the winter only after 20-25 engine running hours. The air cleaners should be cleaned with kerosine.
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3`y9V2&b Plate 17 - Lubrication System
n_G< /8 1. Oil pump
7.hgne'< 2. Oil radiator tank
MQD%m ;[s 5. Change-over cocks
M4hzf 6. Filler plug
7;cb^fi/ 7. Threaded grease guns for lubricating the spindle of the water pump
S`,(10Y 8. Compensating tank
Vc}#Ok 9. Junction pipe
&,?bX]) 10. Fresh oil thermometer
eWjLP{W 11. Used oil thermometer
^[]GsF 12. Pressure gauge
#BA=?7 ENGINE LUBRICATION SYSTEM pJM~'tlHV For the lubrication of the engine, "Avia" Oil MK and M3 is used in the summer and M3L in the winter.
S}=d74(/n The lubrication system (Plate 17) consists of two oil radiator tanks 3, oil pump 1, oil filter 2, pressure gauge 13, two thermometers 11 and 12, and a compensating tank 9. In the latest models, oil tanks are not in the form of radiators (i.e. without cooling fins), and the change-over cock is not fitted.
hrfu\cI Construction of Lubrication System The oil radiator tanks These are situated in the engine compartment at the sides. Their inner surfaces (facing the engine) are fitted with laminated fins (or radiator sections) where possible. The full capacity of each tank is 57 litres. The minimum possible quantity of oil is 10 -15 litres. A dipstick is provided and is inserted in the filler plug in the oil tank. In the bottom part of the tank there is an oil filter. At the base of the filter there is a threaded drain plug 7. To remove the oil from the tank this plug should be unscrewed two or three turns - it is not necessary to unscrew it completely - and the oil will flow from the opening. The inside of the plug is adapted to take a hose for draining the oil into a vessel. The filler has a mesh filter. The top of the tank has a change-over cock the handle of which has three positions:
KA )9&6 1. Forwards (towards the front of the vehicle) - oil can be forced directly by the pump through the cock into the tank. 2. Backwards - radiator on. The oil is cooled to air temperature as it flows through the radiator fins and it passes into the oil tank to be taken up again into the engine. 3. To the side - the tank and radiator are shut off.
]y*AA58; When the engine is running the handles of the change-over cocks 5 (Plate 17) of both tanks (those which have radiators) must either be in the position "HA BAKN" (to tank) or "HA PADNATOR" (to radiator), it is forbidden to leave the handle pointing to the side.
U68o"iE The junction tube 10 serves to connect both tanks to the crankcase and also to drain off oil and foam when the tanks are overfull.
H{*~d+:ol The oil pump which is fixed to the crankcase bottom half serves to force oil under pressure to the engine and to scavenge the used oil.
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ZA4NVt.yN Plate 18 - Oil Filter
I!IWmU6FN 1. Body
0(A(Vb5J.T 2. Cap
-phwzR\(t 3. Adaptor for inlet pipe
ICSi<V[y1 4. Adaptor for outlet pipe
:S Tj
< 5. Union for safety valve
Fb#_(I[aj 6. Filter disc with rim outside
$~M#msK9 7. Nut
]^HlI4 z 8. Central stud
I;dc[m 9. Union
G(7!3a+ 10. Filter disc with rim inside.
rzC\8Dd The oil filter (Plate 18) is attached to the front of the crankcase bottom half.
ZJev_mj Action of the lubrication system
83,ATQg Both pairs of scavenge gears in the oil pump force oil into the compensation tank (#9) (Plate 17) whence it flows through the change-over cock (#5) into the tank-radiators. The compensation tank serves to return the used oil equally to both tanks. The pressure of the oil system which is indicated in the pressure gauge must be 6-9 Kg/cm2. This oil pressure is obtained by the help of the relief valve situated underneath the top or the oil pump. The temperature of the oil entering the engine (thermometer #11) must be more than 40oC and must not exceed 80oC The temperature of the oil leaving the engine (thermometer #12) must not exceed 100C.
2BA'Zu` In certain exigencies it is possible to fill not more than 5-6 litres of oil directly into the crankcase through the breather. The spindle of the water pump should be lubricated periodically by thc threaded grease gun (#3) (Plate 17).
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\(9hg.E Plate 19 - Plan of Engine Lubrication
>"qnuv G N.B. In V-2 -S4 (Series H) engines, the lubrication is conducted from the front.
p|Po##E}g^ ENGINE COOLING SYSTEM <uUHr,# The engine cooling system (Plate 20) is comprised of the water jacket of the cylinder blocks, water radiator (#1), water pump (#2) with cock (#3), centrifugal fan (#14), T-piece (#8) with air valve, steam valve (#12) and pipes. The capacity of the cooling system is 90-95 litres.
hr9[$4'H Construction of the Cooling System aiP.\`>} Radiators
T%kr&XsQX Two tubular type radiators are installed in the vehicle inclined at each side of the engine.
h$`P|#V& Each radiator consists of two collector tanks at the top and bottom connected to each other by copper tubes. To increase the cooling surface of these tubes, they are covered with thin copper laminations.
Kj|l]' The lower collector tank of the radiators are joined by pipes to the water pump.
feOX]g# The top collector tank of the radiator has two pipe connections, one to the jacket, the other to the T-piece for draining water from the radiator. In the middle of this collector tank there is a union to which is joined to a thermometer. The top right collector tank has, in addition to these pipe connections, yet another pipe for leading off steam to the steam valve and an inspection plug for testing the level of the water.
Dh=?Hzw The centrifugal fan is mounted on the flywheel and servee to blow air round the water and oil radiators.
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