Yanmar 4LHA-HTP User Manual

Chapter 9 Electrical System
3. Starter Motor
4LHA Series
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.
Shunt coil
Series coil
Earth
Magnetic switch wiring
SI 3-41A
Coil resistance (at 20
o
C)
0.70Q
(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.
SI 3-41A
Resistance value (at 20
o
C) 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 ball bearing makes any
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
Shell
Aeroshell No.7
Bearing and spline
Shell Albania Grease No.2
Reduction gear
Shell
Aeroshell No.7
Sliding of shitt lever
Shell
Aeroshell No.7
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 check should be made with the
pinion pressed back lightly to take up any play in
the engagement linkage.
mm (|nJ
Starter motor
l dimension
St 3-41A
0.3-1.5
(0.0118-0.0591)
Pressing the pinion
1 dimension
Measuring of I dimension

Yanmar 4LHA-HTP Specifications

General

Brand	Yanmar
Model	4LHA-HTP
Category	Engine
Language	English