Service Manual
Series 45 J Frame Open Circuit Axial Piston Pumps
520L0607
• Rev AI • Sep 2013
29
M2
L2
S
L1
P108 669E
B
X
Control assembly
Disassembly
1. Remove four screws (C300).
2. Remove the control and discard the four
O-rings (C200).
3. Remove PC plug (C103), and PC spool (C132)
from the control housing.
Note the orientation of the spool for reassembly.
4. Remove backup plug (G030), and orifice
(G020).
Minor Repair (continued)
Servo Control Orifice
Reassembly
1. Install the orifice (G020), and torque to 2-3.4
N•m [18-30 in•lb]. Then install the orifice
backup plug (G030), and torque to 2-3.4 N•m
[18-30 in•lb].
2. Install the PC spool (C132), spherical end first,
into the PC bore. Install plug (C103). Torque
the plug to 10.8 - 13.5 N•m [8 - 10 lbf•ft].
3. Using petroleum jelly to retain them, install
the four O-rings (C200) in the recesses on the
control housing.
4. Install the control assembly onto the endcap
using four screws (C300). Torque the screws to
5.4 - 7.5 N•m [4 - 5.5 lbf•ft]. Torque screws in a
criss-cross pattern and re-torque the first
screw to ensure proper torque retention.