Yanmar 4LHA-HTP Operation Manual page 602

Chapter 7 Reduction and Reversing Gear
5. Reassembly
Preassembly of Output Half of Housing
IMPORTANT: If tapered roller bearing cups were re-
moved, ensure output shaft seal IS NOT in place, as it will
be necessary to heat housing prior to installing bearing
cups.
IMPORTANT: The tapered roller bearing cup on the input
shaft (control block end) is properly positioned by bot-
toming out on the face of the control block assembly. It
will be necessary to temporarily install control block to
install this tapered roller bearing cup.
18. Temporarily install control block on outer housing.
Tighten bolts securely.
^ -diifalfalltb-.' .
a - Input Shaft Bearing Cup
b - Control Block Face
A WARNING
Use care in handling housing, once it is heated with torch
lamp. Severe burns could result. Use special protective
gloves when handling housing.
19. Heat bearing bores of housing using a torch lamp and
install bearing cups using a suitable mandrel.
a - Bearing Cups
b - Torch Lamp
20. Allow housing to cool (Do Not cool with water) ånd then
tap bearing cup with suitable mandrel to ensure it is prop-
erly seated.
21. Remove control block assembly.
7-2-28
4LHA Series