SUBSECTION 9D
PROPEL GEAR CASE
3. Remove the shaft assembly oil drain plug and drain the
GENERAL
oil into a container. Install the drain plug after all the oil has
This subsection covers the removal, repair, and installation
been drained.
of the propel gear case.
4. Attach lifting slings to the gear case and attach the slings
GEAR CASE (14Q121)
to a suitable hoist. The gear case weighs approximately
1000 Ibs.
DESCRIPTION
5. Remove the sixteen capscrews which secure the propel
A propel gear case is attached at the rear of each crawler
gear case to the side frame Pull and lift the gear case from
frame (see Figure 9D-1). The gear case transmits propel
the mounting.
motor rotation to the propel driveshaft. The gear case con-
sists of an input section, center planetary section and
DISASSEMBLY
output section.
GENERAL. The propel gear case is disassembled by sec-
tion. Each section is listed separately and the complete dis-
REMOVAL
assembly procedure for the section is given.
To remove the propel gear case, proceed as follows (see Fig-
OUTPUT SECTION. To disassemble the output section, pro-
ure 9D-1):
ceed as follows (see Figure 9D-12):
1. Refer to Subsection 9B and remove the propel motor and
1 Remove capscrews (02), holding cover (04) to the body of
brake.
the drive.
2. Remove the gear case oil drain plug and drain the oil into
2. Lift the cover assembly straight up from the unit, allow-
ing the pilot of the cover to slide straight out of the counter-
a container. Install the drain plug after all the oil has been
bore in ring gear (13).
drained.
Figure 9D-1. Propel Gear Case
