Lull 6K Service Manual - Manual (Page 165)

Supply, Pressure, and Return Hydraulics
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 5-21
Installation
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 installation of the
suction strainer on models with control manifold hydraulics.
1. Insert hydraulic oil strainer (Item 2) into cavity in hydraulic reservoir
and tighten until snug.
2. Reconnect the pipe connector to the suction strainer. For final
tightening, turn connector 2–3 turns past finger tight.
3. Clean end of the suction tube elbow with an appropriate solvent.
Reconnect the suction tube elbow to the pipe connector. For final
tightening, torque to 250–283 ft-lbs.
4. Apply thread sealant to few threads near the head of drain plug
(Item 1). Install the drain plug. Tighten 2–3 turns past finger tight.
5. Fill hydraulic reservoir according to the preferred method on page 5-8.
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 installation of the
suction strainer on models with mid-inlet hydraulics.
1. Insert hydraulic oil strainer (Item 8) into cavity in hydraulic reservoir
and tighten until snug.
2. Install a new O-ring (Item 12) on the hydraulic suction hose (Item 13).
3. Install the hydraulic suction hose on the hydraulic oil strainer using the
two flange halves (Item 9) and the four (4) lockwashers (Item 10) and
capscrews (Item 11). For final tightening, torque the capscrews to 55
ft-lbs.
4. Apply thread sealant to few threads near the head of drain plug
(Item 1). Install the drain plug. Tighten 2–3 turns past finger tight.
5. Fill hydraulic reservoir according to the preferred method on page 5-8.