Yanmar 4LHA-HTP Operation Manual page 640

Chapter 9 Electrical System
3. Starter Motor
6.4 Magnetic switch
(1) Shunt coil continuity test
Check for continuity between the S terminal and the
magnetic switch body (metal part). Continuity indicates
that the coil is open and that the swtich must be replaced.
Coil resistance (at 20 C)
o
(2) Series coil continuity test
Check for continuity between the S terminal and M
terminal. Continuity indicates that the coil is open and
that it must be replaced.
Resistance value (at 20 C)
o
Shunt coil
Series coil
Earth
Magnetic switch wiring
SI 3-41A
0.70Q
SI 3-41A
0.330
6.5 Pinion
(1) Inspect the pinion teeth and replace the pinion if the teeth
are excessively worn or damaged.
(2) Check if the pinion slides smoothly; replace the pinion if
faulty.
(3) Inspect the springs and replace if faulty.
6.6 Ballbearing
(1) Check whether the
abnormal sound and replace the ball bearing if
necessary.
7 Reassembly precautions
Reassemble the starter motor in the reverse order of
disassembly, paying particular attention to the following:
(1) Lubrication
Lubricate each bearing and spline (points indicated in
the figure below) with high quality "Hitachi Electrical
Equipment Grease A"
The following lubricants may be used in place of Hitachi
Electrical Equipment Grease A.
Magnetic switch plunger
Bearing and spline
Reduction gear
Sliding of shitt lever
8 Adjustment and performance test
(1) L-size measurement (gap between pinion and pinion
stopper)
When the pinion is at the projected position,
measure the gap between the pinion and pinion
stopper. This c h e c k should be made with the
pinion pressed back lightly to take up any play in
the engagement linkage.
Starter motor
St 3-41A
Pressing the pinion
1 dimension
Measuring of I dimension
4LHA Series
ball bearing makes any
Aeroshell No.7
Shell
Shell Albania Grease No.2
Aeroshell No.7
Shell
Shell Aeroshell No.7
m m ( | n J
l dimension
0 . 3 - 1 . 5
(0.0118-0.0591)