Owner manual

BDU-10/21
BDU-10/21Major Repair
Page 19
BDU-21 Swashplate Components
Measure Control Arm End Play BDU-10 Cylinder Block Kit
BDU-21 with Swashplate Installed
Install the thrust washer and pump cylinder block spring
onto the pump shaft.
Install the springs piston washers and pistons into the
cylinder block. The pistons must move freely in their bores.
Hold the swashplate in position and measure the end play
of the displacement control shaft using a dial indicator or
a depth guage. Using a suitable sleeve, press the control
shaft bearing into the housing until the control shaft end
play is between 0.020" and 0.060" (.508-1.52 mm).
Old Styles
New Styles
BDU-21 Swashplate Changes