Lull 6K Service Manual - Manual (Page 613)

Brakes
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 9-39
8. Remove cotter pin (Item 5) and clevis pin (Item 4) securing the park
brake cylinder (Item 6) to cylinder mount (Item 1). Remove park brake
assembly.
9. Take park brake assembly, along with other disassembled parts, to an
appropriate place for further inspection and cleaning.
10. Remove elbow (Item 3), clevis (Item 10), lockwasher (Item 11), and
jam nut (Item 12) from park brake cylinder.
11. Discard park brake cylinder and cotter pins. Clean all remaining parts
with appropriate solvent; inspect and replace as necessary.
Cylinder Installation
Models with Horizontal Cylinder Mount
644B-37 (S/N 101–383)
644B-42 (S/N 101–119)
844C-42 (S/N 101–281)
1044C-42 (S/N 101–106)
1044C-54 (S/N 101–102)
6K-37 (S/N 101–211)
6K-42 (S/N 101–105)
8K-42 (S/N 101–162, 165)
10K-42 (S/N 101–106) The following procedure refers to Fig. 9-21.
1. Install bell crank assembly (Items 11, 20, 21, and 24–27) as follows:
a. Lubricate and install new bushings (Items 21 and 24) into block
portion of park brake cylinder mount (Item 28). Install one into each
end of block.
b. Install shim(s) (Item 20) on bell crank (Item 11) and install bell
crank through bushings.
c. Install flatwasher (Item 25), shim(s) (Item 26), and retaining ring
(Item 27) on bell crank.
Note: Install as many shims as needed to eliminate horizontal movement of bell
crank.
2. Install adjustable link assembly (Items 12–19) as follows:
a. Install clevis pin (Item 16) to secure two (2) adjustable links
(Item 13) to brake cam. Install flatwasher (Item 14), and cotter pin
(Item 17) on clevis pin.
b. While securing brake cam (Item 15) in the up position and rotating
bell crank (Item 11) towards park brake cylinder, secure adjustable
links to bell crank (Item 11) with clevis pin (Item 18).
c. Install flatwasher (Item 12), and new cotter pin (Item 19) on clevis
pin.
3. Install elbow (Item 4) on new park brake cylinder (Item 5). Position
elbow as shown in Fig. 9-21. For final tightening, turn elbow to 1.5–3
turns past finger tight.
4. Install park brake cylinder (Item 5) on brake cylinder mount (Item 28)
using the brake cylinder pin (Item 2) and new cotter pin (Item 1).
5. Install clevis (Item 8), lockwasher (Item 7), and jam nut (Item 6) on new
park brake cylinder.