Yanmar 4LHA-HTP Operation Manual page 550

Chapter 7 Reduction and Reversing Gear
3. Inspection and Servicing
3-8 Input shaft
Input shaft gear with torque limiter
Roller bearing
(1) Spline part.
Whenever uneven wear and/or scratches are found,
replace with a new part.
(2) Surface of oil seal.
If the sealing surface of the oil seal is worn or scratched,
replace.
(3) Torque limiter parts.
If the torque limiter has slipped due to excessive torque,
measure the size of the inner parts listed top right. If
the parts are excessively damaged replace.
W " ,
ffll
(4)Plates (A) & (B)
Plates (A) & (B) will be worn in stepped configuration as
shown below. Replace if the measurement is found to
be over the wear-limit.
-t
2
t r
Plate (A)
Stepped wear
Plate (A)
ft, +1,)
Plate (B)
( t 3 + t )
4
Input shaft
W Nut
-Plate (B)
• Plate (A)
Spacer
>— Cup spring
TJ— Input shaft gear
1. Ball bearing
Snap ring
Iff
Plate (B)
m m (in.;
Limit Q'ty/unit
0.03
22
(0.0012)
0.03
23
(0.0012)
(5)Cap spring
Cup spring, T
3-9 Output shaft
(1 (Visually . inspect the spline, oil seal and O-ring, and
repair or replace, a part when any abnormal condition
is found on its surface.
7-1-14
4LHA Series
Standard Limit
3 . 5 - 3 . 8
( 0 . 1 3 7 8 - 0 . 1 4 9 6 )
(0.1319)
\
Cup spring
m m (in.)
3.35