Lull 6K Service Manual User Manual
Page 220
Supply, Pressure, and Return Hydraulics
5-76
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
1. Install low brake pressure switch (Item 1) into SW port and torque to
205–235 in-lbs. Apply torque to hex closest to port. Do not apply
torque to body of switch or large hex (if equipped).
2. Install each fitting in its proper location. Use the following torque
specifications:
Installation
Hydraulic Control
Manifold Assembly
For items referenced below, refer to Fig. 5-43.
1. Clean hydraulic hose endings with solvent. Dry with compressed air.
2. Install assembled control manifold to valve plate (Item 21) with three
(3) each capscrews (Item 23), lockwashers (Item 24), and flatwashers
(Item 25). Torque capscrews to 35 ft-lbs.
3. Reconnect hydraulic hoses to elbows, connectors, and tees as
instructed in Chapter 3 of this manual. Refer to the sketches and notes
made earlier and adjust fittings as necessary so that they are in the
same position as prior to being disconnected.
4. Reconnect the hydraulic tube (Item 20) to the connector on the control
manifold (EF orifice) and the connector on the control valve (Item 22).
Torque nuts on hydraulic tube to 117–125 ft-lbs.
5. Reconnect intermediate wiring harness to low brake pressure switch.
Table 5-4: Torque Specifications for Hydraulic Fittings on Control Manifold
Assembly
Fig. 5-44
Fitting
Ref. #
Fitting Description
Torque Spec.
Fig. 5-43
Hose
Ref. #
2
90° O-Ring Elbow (P1G Port)
160–180 in-lbs.
6
3
O-Ring Connector (STP Port)
205–235 in-lbs.
7
4
O-Ring Connector (STB Port)
46–50 ft-lbs.
8
5
90° O-Ring Elbow (Cartridge on PLT Port) 160–180 in-lbs.
9
6
90° O-Ring Elbow (B Port)
25–29 ft-lbs.
13
7
90° O-Ring Elbow (ACG Port)
160–180 in-lbs.
12
8
O-Ring Tee (F Port)
25–29 ft-lbs.
11 & 14
9
90° O-Ring Elbow (PG Port)
160–180 in-lbs.
10
10
O-Ring Tee (T Port)
25–29 ft-lbs.
15 & 16
11
O-Ring Connector (EF Port)
154–166 ft-lbs.
20
12
O-Ring Connector (CF Port)
46–50 ft-lbs.
19
13
O-Ring Connector (P1 Port)
105–115 ft-lbs.
18
14
O-Ring Connector (LS Port)
205–235 in-lbs.
17
15
90° O-Ring Elbow (Cartridge on ST Port)
25–29 ft-lbs.
3
16
90° O-Ring Elbow (PSG Port)
160–180 in-lbs.
5
17
90° O-Ring Elbow (AC Port)
25–29 ft-lbs.
4
18
90° O-Ring Elbow (Long) (P2 Port)
75–85 in-lbs.
2