Yanmar 4LHA-HTP Operation Manual page 547

Chapter 7 Reduction and Reversing Gear
3. Inspection and Servicing
4LHA Series
(3)IVIeasure the amount of wear on the tapered contact
surface of the drive cone, and replace the cone when the
wear exceeds the specified limit.
C l u t c h gear ( A )
Standard dimension Limited dimension
32.7 ~ 33.3 31.6
Dimensions S
( 1 . 2 8 7 4 - 1.3110) (1.2441)
NOTE: When dismantled, the forward or reverse direction
of the drive cone must be clearly identified.
(4) If the wear of the V-groove of the drive cone is exces-
sive, replace the part.
VOTE: When replacing the drive cone, the drive cone
and clutch gears (A) and (B) must be lapped prior
to assembly.
The lapping procedure is described below.
7-1-11