Primary Reduction Gear Case - Taylor-Dunn B5-540-48XL Service And Replacement Parts Manual

B5-440-36 / B5-440-48 / B5-540-48XL / BF-030-48

PRIMARY REDUCTION GEAR CASE

WARNING
This section is one section of a complete service
manual. Before starting any procedure, read all
warnings and instructions that are located in the
Service Guidelines chapter.
Illustration is for reference only. This assembly is not
serviceable with the exception of oil seals.
This procedure is only if the gear case must be resealed
due to a leak.
Note: To split the case may require case spreading
tool.
1: Break the case halves seal using a pry bar as shown
in the illustration.
2: Install the spreading tool as shown and SLOWLY
tighten each screw to put pressure on the output and
input gears.
3: Lightly tap the housing to help extract the bearings
from the bores.
4: Thoroughly clean all components
5: Pre-lube all bearings and gears with clean oil.
6: Install new seals and wipe the seal lip with grease.
7: Place the outer housing on a CLEAN flat bench.
8: Brush a small amount of axle oil into the three
bearing bores lubricating the walls of the bore.
9: Place the three gear assemblies into the housing.
10: Clean and dry the housing mating surface on both
housings.
11: Make sure there is no oil or grease on the sealing
flange of both halves and apply a bead of silicon
gasket sealer on the outer housing. The bead should
go around the INSIDE of the mounting holes and the
OUTSIDE of the drain plug.
12: Brush gear oil on the outer walls of the three bearings
and carefully install the inner housing.
13: Using three small C-Clamps, clamp the housings
together and turn over to install the bolts.
14: Torque mounting bolts per torque listed in the
Hardware Torque table at the end of this section.
Note: Apply duct tape across the housing opening If
it is not going to be immediately installed on the
3rd member.
MB-440-06
Transaxle
Page 51