Pump controls cover plate
P106 184E
M90 (x6)
M1
M11
d
h
5 mm
Seal washer
location (42, 180, 250 cc)
16 N•m [12 lbf•ft]
Displacement control orifices
1. Remove the control assembly as described in the instructions for the specific displacement control.
2. Orifice plugs may be located in the control assembly, at the pump housing face. Remove the orifice
plugs one at a time (to avoid mixing them up) with a 4mm internal hex wrench. Note the location of
each plug, do not interchange plugs. Clean, reinstall, and torque the orifice plugs to 3N•m [2lbf•ft].
3. Assemble the control onto the pump. Refer to the instructions for the specific control.
Underside of an HDC/EDC module showing orifice locations
P
B
A
TB
TA
Orifice check valve
Orifice plugs
E101 085E
Displacement control orifice check valve
1. Remove the control assembly as described in the instructions for the specific displacement control.
Service Manual
Series 90 Pumps
Minor repair
520L0818 • Rev 0101 • August 2015
57