Multi Pro 5800Hydraulic System Page 5 − 60
4. Inspect thrust plates for the following:
A. Bearing areas should not have excessive wear or
scoring.
B. Face of thrust plates that are in contact with gears
should be free of wear, roughness or scoring.
C. Thickness of thrust plates should be equal.
5. Inspect front flange and rear cover for damage or
wear.
6. If internal parts are found to be worn or damaged,
gear pump replacement is necessary.
Assembly (Fig. 43)
NOTE: When assembling the motor, check the marker
line on each part to make sure the parts are properly
aligned during assembly.
1. Lubricate body seals, pressure seals, uni−rings and
thrust plate grooves with a thin coat of petroleum jelly.
Lubricate all other internal parts freely with clean hy-
draulic oil.
2. Install new seal and retaining ring into front cover.
3. Assembly pump section P1:
A. Install the pressure seals, flat side outward, into
the grooves in the thrust plates. Follow by carefully
placing the uni−rings, flat side outward, between the
pressure seals and the grooves in the wear plate.
B. Apply a light coating of petroleum jelly to the ex-
posed side of the front flange.
C. Lubricate the drive shaft/gear with clean hydrau-
lic oil. Insert the drive end of the drive shaft through
the thrust plate with the pressure seal side down and
the open side of the pressure seal pointing to the inlet
side of the motor. Install shaft into front cover.
D. Lubricate the idler shaft/gear with clean hydraulic
oil. Align the position markings made during disas-
sembly and install idler gear shaft into the front thrust
plate and front cover. Apply a light coating of clean
hydraulic oil to gear faces.
E. Install rear thrust plate with pressure seal side up
and open side of the pressure seal pointing to the in-
let side of the motor.
F. Install steel bushings/dowel pins in body.
G. Apply a light coating of petroleum jelly to new
body seal and body seal groove in the body. Install
new body seal into the body.
IMPORTANT: Do not dislodge seals during
installation.
H. Align marker lines and slide the body over the
gear assembly. A slight tap with a soft hammer on the
pump body should be sufficient to engage the steel
sleeves.
4. Repeat step 3. for pump section P2.
5. Install the four (4) cap screws with washers and hand
tighten.
IMPORTANT: Prevent damage when clamping the
reel motor in a vise; clamp on the front flange only.
Also, use a vise with soft jaws.
6. Place front cover of the motor into a vise with soft
jaws and alternately tighten the cap screws to 33 ft−lb
(45 N−m).
7. Remove motor from vise.
8. Place a small amount of clean hydraulic oil in the inlet
of each pump and rotate the drive shaft away from the
inlet one revolution. If any binding is noted, disassemble
the pump and check for assembly problems.
To Next Page
Loading...
Need help?
General
