Jacobsen HR5111 User Manual

3. Using a wrench, tighten the nut the amount shown
in the chart below. The line will show which fittings
have been tightened correctly and also indicates if
a fitting is becoming loose.
37° Flare Torque Recommendations
Special Hose Installation Instructions
1. Hold the fixed portion of the hose coupling with
one wrench; use a second wrench to tighten or
loosen the hose nut. This will avoid damaging the
fitting seal. When tightening a hose, do not permit
it to twist; hold it in a normal straight position.
2. When installing mower hoses, place fittings at
angles to avoid contact with fixed parts when turn-
ing. Make sure hoses are assembled to proper “A”
and “B” ports on components.
O-RING BOSS FITTINGS
On hoses with O-ring fittings, make sure O-rings are
clean and hose fittings are properly seated before
tightening. Always install new O-rings. See Figure 8C-2.
Replacement O-rings for O-Ring Boss Fittings
NOTE
O-rings should be lubricated with the fluid to be
used in the system prior to assembly.
HYDRAULICS
SECTION 8C. GENERAL INSTRUCTIONS
8C-2
FIgure 8C-1. Reference Marking
SAE
Dash Thread Tube Torque # of Flat
Size Size O.D. In-Lbs. Rotations
3
3
⁄
8-24 0.188 95-105 1
1
⁄
2:1
3
⁄
4
4
7
⁄16-20 0.250 135-145 2
1
⁄4:2
3
⁄4
5
1
⁄2-20 0.312 170-190 3
1
⁄4:3
3
⁄4
6
9
⁄
16-18 0.375 215-245 2
1
⁄
4:2
3
⁄
4
8
3
⁄4-16 0.500 430-470 2
1
⁄4:2
3
⁄4
10
7
⁄8-14 0.625 680-750 2:2
1
⁄2
12 1
1
⁄16-12 0.750 950-1050 2:2
1
⁄2
14 1
3
⁄8-12 0.875 1000-1100 1:1
1
⁄2
16 1
5
⁄16-12 1.000 1300-1360 2
1
⁄4:2
3
⁄4
20 1
5
⁄8-12 1.250 1520-1600 1
1
⁄4:1
3
⁄4
24 1
7
⁄8-12 1.500 1900-2000
3
⁄4:1
1
⁄4
Tube O.D. or Hose I.D. Rotate No. of Hex Flats
3/8" 2
1/2" 2
5/8" 1
1
⁄
2
–2
1"
3
⁄4–1
Figure 8C-2. Boss Fitting O-Ring Installation
ABO-Ring
Tubing O.D. Thread Jacobsen
or Hose I.D. Size Part No.
1
⁄8
5
⁄16-24 459290
3
⁄16
3
⁄8-24 459291
1
⁄
4
7
⁄
16-20 339896
5
⁄16
1
⁄2-20 459293
3
⁄8
9
⁄16-18 339897
1
⁄
2
3
⁄
4-16 339898
5
⁄8
7
⁄8-14 339899
3
⁄4 1
1
⁄16-12 339900
7
⁄
8 1
3
⁄
16-12 459296
11
5
⁄16-12 339901
1
1
⁄4 1
5
⁄8-12 339902
1
1
⁄
2 1
7
⁄
8-12 339903
22
1
⁄2-12 459300

Jacobsen HR5111 Specifications

General

Brand	Jacobsen
Model	HR5111
Category	Lawn Mower
Language	English