Manitowoc Grove CD3340B Service Manual page 123

CD3340B/YB4411
a0161
Turned Pin
Inspect the Boom Chain Tension
The boom chains should be checked for the correct tension
to ensure proper retraction of the boom sections.
Lower Retract Chain
To check for correct tension on the lower retract chain loosen
t h e j a m n u t o n t h e r e t r a c t c h a i n a d j u s t i n g s c r e w
(Figure 5-37). Check the retract chain for looseness by
prying the retract rod adjusting nut away from the plate
(Figure 5-37). If a gap is present adjust the chain tension.
Adjusting Nut And Jam Nut Location
p0322
Upper Extend Chain
Check the extend chain for looseness by prying the extend
rod retaining nut away from the bulkhead plate (Figure 5-38).
If a gap is present adjust the chain tension.
GROVE
FIGURE 5-36
p0322
Inspect Hydraulic Hoses
FIGURE 5-37
Inspect hydraulic hose assemblies for leaks, damaged
fittings and worn exterior. Do not use your hands to check for
hydraulic leaks. Hydraulic oil under pressure can cause
serious injury or possible death. Use a piece of cardboard or
other material as a deflector to detect leaks. Replace any
problem hose before beginning work.
Published 04/07/2015 Control # 569-00
Pry Nut Away From Bulkhead Plate
MAINTENANCE
FIGURE 5-38
W0017
5
FIGURE 5-39
5-21