Toro Greensmaster
3150 - Page 108

Greensmaster 3150Hydraulic System Page 4 -- 80
3. Inspect drive gear, idler gear and bearing blocks
(Fig. 61) for the following:
A. Gear shaftsshouldbe free ofroughsurfaces and
excessivewearatbushing pointsand sealingareas.
Scoring, rough surfaces or wear on gear shafts indi-
cates need for replacement.
B. Gear teeth should be free of excessive scoring
andwear.Anybrokenornickedgearteethmustbe
replaced.
C. Inspect gear face edge for sharpness. Sharp
edgesofgearswill millinto bearingb locks and,thus,
must be replaced.
D. Bearing areas of bearing blocks should not have
excessive wear or scoring.
E. Face of bearing blocks that are in contact with
gears should be free of wear, roughness or scoring.
4. Inspect front flange and rear cover for damage or
wear.
Assembly
NOTE: Whenreassemblingthemotor,checktheidenti-
fication marks made during disassembly to make sure
the parts are properly aligned during reassembly.
1. LubricateO--rings,pressureseals,back--upgaskets
and seal grooves with a thin coat of petroleum jelly. Lu-
bricate allother internal partsfreely withclean hydraulic
oil.
2. Install new shaft seal into front flange.
3. Install lubricated p ressure seals into the grooves in
the front flange and rear cover. Follow by carefully plac-
ing the back--up rings into the grooves.
4. Install new O-- rings to the body.
5. Lubricate gear faces and bearing surfaces of drive
gear, idler gear and bearing blocks.Carefully assemble
bearing blocks and gears noting identification marks
made during disassembly.
6. Position the motor body on its side. Carefully slide
bearing block and gear assembly into the body cavity
using identification marks made during disassembly.
7. Remove any excess lubrication from mating s ur-
faces of body, rear cover and front flange. Make sure
that these surfaces are clean and dry.
8. Install dowel pins in body.
IMPORTANT: Do not dislodge O--rings, pressure
seals or back--up rings during final assembly.
9. Gently slide the rear cover onto the assembly using
marker or scribe mark for proper location. Firm hand
pressure should be sufficientto engage the dowel pins.
10.Positionthemotorwithrearcoverdownwards.Care-
fullyslidethefrontflangeontotheassemblyusingmark-
er or scribe mark for proper location.
11.Install the four (4) cap screws and hand tighten.
IMPORTANT: Avoid using excessive clamping
pressureonthemotorhousingtopreventdistorting
the housing.
12.Place motor front flange in a vise and alternately
torque the cap screws from 215 to 280 in--lb (24 to 32
N--m).
13.Put a small amount of hydraulic oil in port on motor
and rotate driveshaft one revolution. Protect the shaft if
using a pliers. If drive shaft binds, disassemble motor
and repeat assembly process.
14.Remove motor from vise.