317
M6.2-1452-003
02 Rev. 6/09
STEERING
Hydraulic Steer Motor
4. Refer to Figure 21929. Lubricate and install
backup ring (2) and pressure seal (1). Be sure ex-
clusion seal (4) and pressure seal (1) are undam-
aged and properly seated.
5. Apply thread locking adhesive (061004-019) to
mounting flange cap screw threaded holes in mo-
tor housing.
Thread locking adhesive must cure completely before
motor is put into service. Using primer reduces curing
time. For curing time, refer to thread locking adhesive
manufacturer instructions.
6. Install a protective sleeve over output shaft. Lubri-
cate inner edges of exclusion and pressure seals.
Lubricate and install the 49 mm (1 15/16 in) diam-
eter o-ring seal on mounting flange. Slide mounting
flange over shaft.
7. Remove protective sleeve and install the four cap
screws. Torque cap screws, in a crisscross pat-
tern, to 28 Nm (20.7 ft lb). Be sure output shaft re-
mains in housing.
8. Securely clamp motor in vise so output shaft is ver-
tical and down. Clamp on mounting flange.
9. Pour clean hydraulic fluid into motor to provide
start-up lubrication.
10. Lubricate and install one of the three largest diam-
eter seals in motor housing groove.
11. Install drive. If splined ends of drive are different
lengths, install longer end into shaft.
Motor Timing
12. Refer to Figure 21930. Align shaft timing dot (3)
with any bolt hole (5). Bolt hole will be used for tim-
ing reference.
13. Install spacer plate (4), and note position of
threaded hole in housing (aligned with timing dot
on shaft). Be sure slots in spacer plate provide pas-
sage for hydraulic fluid as well as cap screws. If
spacer plate is improperly installed
(wrong-side-up), the motor will not operate.
14. Lightly stretch, lubricate and install the second of
three large diameter seals in geroler (1).
15. Install geroler (1).
16. Align any star point (2) with threaded hole (noted
for location of timing dot).
17. Rotate the geroler (1) to align the screw holes.
18. Lubricate and install the last of the three large di-
ameter seals in end cap groove.
19. Install end cap and secure with cap screws.
Torque cap screws, in a crisscross pattern, to
34 Nm (25 ft lb).
Figure 21929
1 Pressure Seal
2 Back-Up Ring
3 Mounting Flange
4 Exclusion Seal
Figure 21930
1 Geroler
2Star Point
3 Timing Dot
4Spacer Plate
5 Threaded Hole for Timing Dot Reference
Crown 2001 PF13078-3 Rev. 6/09
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