37SG OWNER’S MANUAL 9/05/19 Page 8 of 19
HYDRAULIC HOSE REPLACEMENT
•
Make sure stump grinder is turned off and cooled down.
•
Ensure the stump grinder is on a level and stable surface/ground.
•
Identify the size of the tool needed for hose removal.
•
Have shop rags/towels handy to absorb any fluid in the line.
•
Make sure your replacement hose is the correct one.
•
Once hose is replaced, make sure the fittings are tightened back up.
•
Start machine and run all functions.
•
Inspect hose(s) for leaks.
•
Tighten fittings to spec as illustrated below.
•
Make sure hydraulic fluid is filled to the top of the sight glass. (If low see page 3)
Thread
Size
Assembly Torque
(in-lb)
Assembly Torque
(ft-lb)
Tube Connection
FFFT
Swivel Nut or
Hose FFFT
2
35 - 45
2 - 4
N/A
N/A
3
65 - 75
5 - 7
N/A
N/A
4
130 - 150
11 - 13
2
2
5
165 - 195
14 - 16
2
2
6
235 - 265
20 - 22
1.5
1.25
8
525 - 575
43 - 47
1.5
1
10
650 - 750
55 - 65
1.5
1
12
950 - 1050
80 - 90
1.25
1
14
1200 - 1300
100 - 110
1
1
16
1400 - 1500
115 - 125
1
1
20
1900 - 2100
160 - 180
1
1
24
2250 - 2550
185 - 215
1
1
32
3000 - 3400
250 - 290
1
1
CHANGING THE HYDRAULIC FLUID
•
Lift machine high enough to place a container large enough to hold at least 15 gallons.
•
Remove the drain plug using a 5/16” hex key wrench and allow to drain.
•
Replace drain plug.
•
Remove the fill plug using a 9/16” hex key wrench.
•
Fill to the top of the sight glass using a suitable hydraulic fluid. (See page 3)
•
Replace fill plug.
•
Dispose of the used fluid according to your local laws and regulations.
