Yanmar 4LHA-HTP User Manual

Chapter 7 Reduction and Reversing Gear
J. Construction
M4LHA Series 't
• A torque limiter is built into the input shaft gear to
prevent damage caused by excessive torque.
• The lube oil temperature can be controlled because in
addition to the input shaft gear which functions as a
centrifugal pump, an oil cooler is also equipped.
• The oil cooler is equipped with a cooling water drain
cock to prevent cracks caused by freezing in cold weather.
It is therefore easy to drain the water.
• The propeller shaft can rotate in both counter clockwise
(C.C.W.) and clockwise (C.W.) directions.
NOTE: Since the difference in reduction gear ratio bet-
. ween C.C.W. and C.W. rotations is within 0.13%,
no problem occurs in operation.
1-2 Specifications of Angle Drive Marine Gear
Model
KM 5 A
For engine models
4LHA-HTE
Down angle
7 degree
Clutch
Constant mesh gear with servo cone clutch (wet type)
Direction of rotation
Input shaft
Counter-clockwise, viewed from stern.
Direction of rotation
Output shaft
Bi-rotation
Reduction ratio
2.57
2.07 1.46
Propeller shaft rpm at cont. rating
1245
1546
2187
Remote control
Control head
Single lever control
Remote control
Cable
Morse, 33-C (Cable travel 76.2mm or 3 in.)
Remote control
Clamp
YANMAR Made, standard accessory
Remote control
Cable connector
YANMAR Made, standard accessory
Output shaft coupling
Outer diameter
0130mm (5.18")
Output shaft coupling
Pitch circle diameter 0108mm (4.25")
Output shaft coupling
Connecting bolt holes
4-012.3mm (4-00.48")
Position of shift lever
Right side, viewed from stern
Lubricating oil
Same as Engine lube oil
Lubricating oil capacity
2.6C
Lube oil cooler
Sea-water cooling
7-1-2

Yanmar 4LHA-HTP Specifications

General

Brand	Yanmar
Model	4LHA-HTP
Category	Engine
Language	English