10
Disc Valve Hydraulic Motor
10 000 Series
Geroler Motors—Two Speed
Figure 23
Spring (4)
Balance Ring/Pins (2)
A, C, E, Back-up Ring
B, C, F, O-ring
A
B
A
D
C
E
F
O-ring
Seal
Figure 24
Small Gap
Plate,
Valve
Valve Housing
Figure 25
Bolt Torquing Sequence
Figure 26
4
1
2
3
59 Install the case drain plug in the bottom of the valve housing. Use
a new o-ring and tighten the plug to 81-122 Nm [60-90 lb-ft] (see
Figure 22).
60 Install the o-rings and back-up rings on the balance ring. Install
the o-rings first then the back-up rings.
61 The largest o-ring has two back-up rings, one on each side. The
two smaller o-rings each have one back-up ring. The two smaller
back-up rings are installed closest to the small end of the balance ring.
62 Put the four balance ring springs into their holes in the valve
housing.
63 To aid the installation of the balance ring lubricate its o-rings and
back-up rings with petroleum jelly. Align the balance ring index pins
with the index holes in the valve housing. Push the balance ring into
the valve housing until it just touches the springs.
Important: Do not push the balance ring all the way down into the
valve housing.
64 Apply petroleum jelly to the 108mm [4.25 in.] seal and 9,5 mm
[.375 in.] o-ring. Install each in the appropriate groove in the valve
housing.
65 Carefully position the valve housing on the valve plate. Be sure to
align the case drain holes. There should be a small gap between the
valve housing and valve plate. This gap will be closed when the hex
head bolts are tightened.
66 Install the four hex head bolts and tighten them to 129-149 Nm
[95-110 lb-ft]. Follow the torque sequence in Figure 26.
67 Install the two check balls and springs.
Reassembly
