Great Plains V300 Assembly Instructions - Manual (Page 23)

Great Plains Mfg., Inc.
Installation Instructions 23
11/08/2006 148-771M
Maintenance
In-Line Hydraulic Filter
If raising or lowering times slow noticeably, check the in-
line filter, and clean as necessary.
To clean the filter:
1. Set tractor’s opener down-force hydraulic circuit to
float.
2. Shut down tractor.
3. Loosen connections at the in-line filter and allow a
few minutes for drain-back.
4. Disconnect and cap the hose to the filter.
5. Disassemble the filter in place.
6. Remove the 50 micron screen. Wash with solvent
and use compressed air to dislodge any debris.
Note: If the filter screen needs to be replaced, order an
810-553C from your Great Plains dealer.
7. Reassemble filter and reconnect hose.
8. Complete a hydraulic system purge and re-phase
per your Operator’s manual.
Installation Reference Information
Connector Identification
➀
JIC - Joint Industry Conference (SAE J514)
Note straiight threads
➁
and the
37
° cone ➂
on “M” fittings (or 37
° flare on “F”).
➃
ORB - O-Ring Boss (SAE J514)
Note the straight threads
➄
and,
elastomer O-Ring
➅
.
Fittings needing orientation, such as the ell above,
also have a washer
➆
and
jam nut
➇
(“adjustable thread port stud”)
- NPT - National Pipe Thread (not shown)
have tapered threads, no cone/flare, no O-ring.
25187
➀
➁
➂
➃
➄
➅
➆
➇
25188
Torque Values
Fastener/Fitting Ft-Lbs N-m
1 ⁄
4 NPT
1.5-3.0 turns past finger tight
1 ⁄
4 -20 GR5
8 11
3 ⁄
8 -16 GR5
31 42
1 ⁄
2 -13 GR5
76 105
9 ⁄
16 JIC
18-20 24-27
9 ⁄
16 ORB w/jam nut
12-16 16-22
9 ⁄
16 ORB straight
18-24 24-32
3 ⁄
4 JIC
27-39 37-53
3 ⁄
4 ORB w/jam nut
20-30 27-41
3 ⁄
4 ORB straight
27-43 37-58