Yanmar 4LHA-HTP Operation Manual page 552

Chapter 7 Reduction and Reversing Gear
3. Inspection and Servicing
3-11-3 Shifter spring
(1 (Check the spring for scratches or corrosion.
(2)Measure the free length of the spring.
Shifter spring
Free length 22.6 m m
8.375N/mm (0.854 kgf/mm)
Spring constant
14.35 mm
Length when attached
Load when attached 69.10N (7.046 kgf)
3-11-4 Stopper bolt
Check the stopper bolt. If it is worn or stepped, replace.
3-11-5 Side cover and o i l seal
(1 (Check the neutral, clutch gear (A( and clutch gear (B)
position grooves. Replace if the grooves are worn.
(2) Measure the insertion hole of the shift lever shaft.
Replace if the size deviates from the standard value.
(3) Check the oil seal and the O-ring for damage.
Replace if the part is defective.
Limit
Standard
19.8 m m (0.780in.)
(0.890in.)
(0.5650 in.)
59.6N (6.08 kgf)
Check point
T o p
r
Clutch gear (B)
Neutral
4
Clutch gear (A)
-
-
3-12 Damper disc
Spline
(1) Spline part.
Whenever uneven wear and/or scratches are.found,
replace with a new part.
(2) Spring.
Whenever uneven wear and/or scratches are found,
replace with a new part.
(3) Pin wear.
Whenever uneven wear and/or scratches are found,
replace with a new part.
(4) Whenever a crack or damage to the spring slot is found
replace the defective part with a new one.
4LHA Series
Spring