Control Disassembly
If you suspect a coil malfunction, remove the coil. Remove the plastic nut with a 26 mm 12 point socket.
Install a new coil. Torque nut to 5 N•m [3.7 lbf•ft].
It is not necessary to remove solenoids (D025) unless you are replacing them.
1. Use a 4 mm internal hex wrench to remove cap screws (D050).
2. Remove solenoids (D025). Remove and discard O-rings (D025A).
Do not disassemble internal parts of control. Internal parts are not available separately. Control is sold
as a complete unit only.
Disassemble the control
E101 405E
D025
D025A
D025A
D050 (3X)
4 mm
D050 (3X)
4 mm
Remove the Automotive Control
1. Drain pump completely before removing control. Disconnect and remove wiring (D640).
2. Fabricate a special tool to remove two plastic plugs (D610). See drawing below for tool dimensions.
Push down on plug and turn 45 degrees counterclockwise. Discard plugs.
Wax seals will be destroyed when the plugs are removed. Do not damage the housing in the plug
sealing area.
3. Use a 5 mm internal hex to remove two screws (D674). Remove shield (D672).
4. .Use a 5 mm internal hex to remove six screws (D250). Remove control from pump. Remove and
discard gasket (D150).
Alignment pins are pressed into control. Do not remove them.
5. If necessary, use a 3 mm internal hex to remove orifices (F00A, F00B) from housing. Tag each orifice
for reinstallation. Each orifice may be a different size.
6. If it is necessary to remove the screens (D084), drill out screen retention ring (D098) and remove and
discard screen. Note screen orientation for proper reassembly.
W
Warning
Do not allow metal fragments to fall into control housing. This may cause erratic pump operation.
Repair Instructions
H1 45/53/60/68 Closed Circuit Axial Piston Pumps
Disassembly
10
520L0957 • Rev CB • September 2014
