Yanmar 4LHA-HTP Operation Manual page 606

Chapter 7 Reduction and Reversing Gear
5. Reassembly
34. Install input half of housing onto output half. Ensure loca-
tor pins are in place. Install bolts and lockwashers and
torque to 36 Ib. ft. (49 N.m).
INPUT SHAFT PRELOAD
35. Measure bearing clearance as follows:
a. Install special tool as shown. Tighten hold down bolts
securely.
a - Special Tool
b - Hold Down Bolts
b. Mount dial indicator on input shaft. Turn input shaft sev-
eral times to seat bearing.
c. Zero the dial indicator.
7-2-32
4LHA Series