Perkins 103-06, Руководство по ремонту

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(4) The motor rotates at full speed before the pinion engages with the ring gear.
Position
Starting motor
Cause
Fatigued pinion sleeve spring
Remedy
Replace
(5) After the engine starts, the motor does not stop when the starting switch is off.
Position Cause Remedy
Starting switch
Magnetic switch Faulty switch
Faulty magnetic switch (solenoid) Replace
Replace
Glow Plug
A sheathed type glow plus is employed and
provides excellent starting.
- Specification
Part No. 185366060
Rated voltage
Current
10.5V 6.9A
B. Short circuit
The glow plug is of a simple structure and short
circuit is rarely caused. However, if the central
electrode, body, sheath, etc. come in contact,
wiring of preheating circuit is burnt during starting.
Correction: Remove the connector and measure
the resistance of each plug terminal and earth
with a tester. The tester reading should be 1.6 ± 0.
161)
Resistance of 0 indicates short circuit.
1 Heat wire 5 Nut
2 Sheath 6 Magnesium oxide powder
3 Asbestos 7 Insulation bush
4 Body 8 Core
Fig 2-
124
- Structure
Coiled thin heat wire is placed in the sintered
magnesium oxide powder enclosed by stainless
sheath. One end of the heat wire is welded to the
sheath end and the other end to the central
electrode. By setting the starter switch to the
position of Heat (H), the heat wire preheats the air
in the combustion chamber.
- Troubleshooting
A. Disconnection of the heat wire.
The glow plug operates even when any one of the
heat wires is disconnected because it is
connected in parallel. However, when discon-
nected, preheating time of the glow signal is
extremely extended.
Check/Remove the connector and check the
continuity between each plug terminal and body
earth. If continuity is not observed, it shows
disconnection. Then replace the heat wire.
Thermoswitch
- Specifications
Part No. 385720100
Type TB-121A
Operating load 12V-3W
Switching temperature 101 to 109°C (Off to
On)
Switching off
temperature
95°C and higher
Oil Pressure Switch
Part No. 185246060
A. The oil pressure switch is a warning device to
inform low engine lubricating oil pressure. When oil
pressure becomes less than specified the
warning light is activated. This pressure switch
houses a diaphragm and contact points.
ON
95°C 101°C 109°C
PB123
Oil pressure switch operating range:
0.2 to 0.4kg/cm
2
(2.8-5.7 psi)