Lull 6K Service Manual - Manual (Page 164)

Supply, Pressure, and Return Hydraulics
5-20 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
Removal and Cleaning
Suction Strainer
Models with Control Manifold Hydraulics
6K-37 (S/N 101–317)
6K-42 (S/N 101–119)
8K-42 (S/N 101–220)
10K-42 (S/N 101–106)
10K-54 (S/N 101–103)
644B-37 (S/N 101–590, 592–666)
644B-42 (S/N 101–207)
844C-42 (S/N 101–621)
1044C-42 (S/N 101–116)
1044C-54 (S/N 101–154) (Ref. Fig. 5-12) The following procedures describes removal of the suction
strainer on models with control manifold hydraulics.
1. Follow preparation procedures as outlined in Section 3 of this manual.
Be sure to follow the guidelines in this section detailed under “General
Hydraulic Maintenance Practices” on page 5-4.
2. Remove the hydraulic reservoir drain plug (Item 1) and drain hydraulic
fluid into a suitable container. Dispose of drained fluid properly.
3. Loosen and disassemble the suction tube elbow (Item 4) from the pipe
connector (Item 3). Cap end of suction tube elbow.
4. Loosen and remove the strainer (Item 2) from the reservoir. Take the
strainer to an appropriate area for further cleaning.
5. Clean the strainer (Item 2) by back flushing with solvent. Dry the
strainer element thoroughly with compressed air.
Models with Mid-Inlet Hydraulics
6K-37 (S/N 318–)
6K-42 (S/N 120–)
8K-42 (S/N 221–)
10K-42 (S/N 107–)
10K-54 (S/N 104–)
644B-37 (S/N 591, 667–)
644B-42 (S/N 208–)
844C-42 (S/N 622–)
1044C-42 (S/N 117–)
1044C-54 (S/N 155–) (Ref. Fig. 5-12) The following procedures describes removal of the suction
strainer on models with mid-inlet hydraulics.
1. Follow preparation procedures as outlined in Section 3 of this manual.
Be sure to follow the guidelines in this section detailed under “General
Hydraulic Maintenance Practices” on page 5-4.
2. Remove the hydraulic reservoir drain plug (Item 1) and drain hydraulic
fluid into a suitable container. Dispose of drained fluid properly.
3. Remove the four (4) capscrews (Item 11) and lockwashers (Item 10)
securing the two (2) flange halves (Item 9) and the hydraulic suction
hose (Item 13) to the hydraulic strainer (Item 8). Remove the flange
halves.
4. Remove and discard the O-ring (Item 12) from the hydraulic suction
hose.
5. Loosen and remove the strainer (Item 8) from the reservoir. Take the
strainer to an appropriate area for further cleaning.
6. Clean the strainer (Item 8) by back flushing with solvent. Dry the
strainer element thoroughly with compressed air.