Cub Cadet BDU-10/21 - Manual (Page 14)

BDU-10/21
BDU-10/21 Page 14
Major Repair
Charge Pump
Assembly Procedures
For BDU-21L with implement circuit: Install the drive
pin. Install a new o-ring on each side of the gerotor
assembly and position the gerotor assembly onto the
aligning pins in the same orientation as it was removed.
Install the charge pump shim and the charge pump cover.
Torque the bolts evenly to 18-25 ft.lbs.(24.4-33.9 Nm).
Major Repair
BDU-21L/A CCW Charge Pump Components
BDU-21L/A CW Charge Pump Components
BDU-21L Charge Pump Components
General Information
Major repairs described in the following sections are for the
complete disassembly and reassembly (Major Repair) of
the transmission and will void all product warranty, unless
license to perform said major repairs was previously
obtained from an authorized representative of HYDRO-
GEAR.
Cleanliness is a primary means of assuring satisfactory life
on repaired units. Cleaning parts by using solvent wash
and air drying is usually adequate. As with any precision
equipment, all parts must be kept free of foreign materials
and chemicals.
Protect all exposed sealing surfaces and open cavities
from damage and foreign material. The outer surfaces
should be cleaned before beginning any repairs.
It is recommended that all O-rings and seals be replaced.
Lightly lubricate all O-rings and seals with a clean petro-
leum jelly prior to assembly.
It is recommended that parts requiring replacement be
replaced with the complete assembly (kit) as shown in the
service parts drawings on pages 22-27.
Prior to performing major repairs on the BDU Hydrostatic
Transmission, remove the transmission from its installed
location and remove any external components such as a
cooling fan and input pulley or frame mounting hardware.
NOTE: Thoroughly clean all exposed surfaces prior to any
further disassembly.
Remove the oil lines (hoses and fittings) so that as much
oil as possible can be drained from the housing.