Electrical System; Checking - Kubota WSM J Series Workshop Manual

J SERIES, WSM

[5] ELECTRICAL SYSTEM

(1) Checking

(A) Starter
(B) Glow Plug
Motor Test
CAUTION
• Secure the starter to prevent it from jumping up and down
while testing the motor.
1. Disconnect the battery negative cable from the battery.
2. Disconnect the battery positive cable and the leads from the
starter B terminal.
3. Remove the starter from the engine.
4. Disconnect the connecting lead (2) from the starter C terminal
(1).
5. Connect a jumper lead from the connecting lead (2) to the battery
positive terminal post.
6. Connect a jumper lead momentarily between the starter motor
housing and the battery negative terminal post.
7. If the motor dose not run, check the motor.
Tightening torque B terminal nut
(1) C Terminal
Magnetic Switch Test
1. Disconnect the battery negative cable from the battery.
2. Disconnect the battery positive cable and the leads from the
starter B terminal.
3. Remove the starter from the engine.
4. Disconnect the connecting lead (1) from the starter C terminal
(2).
5. Connect a jumper lead from the starter S terminal (3) to the
battery positive terminal post.
6. Connect a jumper lead momentarily between the starter C
terminal (2) and the battery negative terminal post.
7. If the pinion gear dose not pop out, check the magnetic switch.
NOTE

• This test should be carried out for a short time, about 3 to 5
seconds.
(1) Connecting Lead
(2) C Terminal
Glow Plug
1. Disconnect the leads from the glow plugs.
2. Measure the resistance with a circuit tester across the glow plug
terminal and the housing.
3. If 0 ohm is indicated, the screw at the tip of the glow plug and the
housing are short-circuited.
4. If the factory specification is not indicated, the glow plug is faulty,
replace the glow plug.
Glow plug resistance Factory spec.
S-108
ENGINE
8.8 to 11.8 N·m
0.9 to 1.2 kgf·m
6.5 to 8.7 ft-lbs
(2) Connecting Lead
W1145152
(3) S Terminal
W1145350
Approx. 0.9 ohms
W1145565
KiSC issued 10, 2016 A