1-43
TROUBLE SHOOTING 1.8
Problem Cause Corrective Action Section
Hydraulic oil
overheating.
Reservoir low on oil. Check for leaks and replenish as required. 1.7
Oil cooler plugged or
dirty. (if applicable)
Auxiliary hydraulics
engaged.
Temperature sender
defective.
Relief valve failure or
out of adjustment.
Wrong type of
hydraulic fluid.
Clean the cooling fins.
Disengage.
Replace.
Check pressure, adjust or replace.
Replace.
8
1.4
1.7
Hydraulic Hose and Fitting Torque Chart
NOTE: all torques are in lbs. / ft (Multiply by 1.36 = N.m.)
HOSE SIZE 37º JIC FITTINGS HOSE SIZE ORB FITTINGS
1/4 9 to 10 1/4 14 to 16
5/16 15 to 16 5/16 18 to 20
3/8 20 to 22 3/8 24 to 26
1/2 30 to 33 1/2 50 to 60
5/8 40 to 44 5/8 72 to 80
3/4 70 to 77 3/4 125 to 135
7/8 82 to 90 7/8 160 to 180
1 55 to 60 1 200 to 220
1 1/4 120 to 132 1 1/4 210 to 280
1 1/2 131 to 144 1 1/2 270 to 360
2 300 to 330
The following torque specifications are for steel ORB fittings into aluminum.
HOSE SIZE ORB FITTINGS HOSE SIZE ORB FITTINGS
1/4 5 to 7 3/4 40 to 45
5/16 8 to 10 7/8 50 to 55
3/8 10 to 12 1 90 to 99
1/2 21 to 24 1 1/4 80to 90
5/8 27 to 30
TORQUE CHART 1.9
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