September 2016
Part No. 1272852
GTH-5519
3-11
Section 3 • Repair Procedures
BOOM COMPONENTS
9
9 Securely attach a resistant guide rope (length
Securely attach a resistant guide rope (length
about 33 feet / 10 m) to the hydraulic hose, one
about 33 feet / 10 m) to the hydraulic hose, one
for each hose. This will be used to install the
for each hose. This will be used to install the
new hoses.
new hoses.
10
10 Reach the back of the machine and remove the
Reach the back of the machine and remove the
cover.
cover.
11
11 Pull hoses "
Pull hoses "
ee
" and "
" and "
ff
" outward - one at a time -
" outward - one at a time -
until they come out completely.
until they come out completely.
12
12 Move to the front bottom of the boom and
Move to the front bottom of the boom and
remove comb "
remove comb "
d
d
".
".
13
13 Tag, disconnect and plug the hydraulic hoses
Tag, disconnect and plug the hydraulic hoses
from the pipes.
from the pipes.
WARNING
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
e
f
14
14 Pull hoses "
Pull hoses "
ee
" and "
" and "
ff
" outward - one at a time -
" outward - one at a time -
until they come out completely.
until they come out completely.
15
15 Remove the rope from the old hydraulic hoses
Remove the rope from the old hydraulic hoses
and attach it to the new hydraulic hoses
and attach it to the new hydraulic hoses
(straight end side).
(straight end side).
16
16 Connect the ends of the new hoses to the
Connect the ends of the new hoses to the
pipes.
pipes.
17
17 Install the hoses "
Install the hoses "
ee
" e "
" e "
ff
" from underneath the
" from underneath the
boom: pull them from the rear side of the boom.
boom: pull them from the rear side of the boom.
18
18 Install the hoses "
Install the hoses "
ee
" e "
" e "
ff
" from behind the
" from behind the
boom: pull them from the front side of the boom
boom: pull them from the front side of the boom
to connect the straight ends to the shut-off
to connect the straight ends to the shut-off
valve.
valve.
NOTICE
Component damage hazard.
Hoses can be damaged if they
are kinked or pinched.
19
19 Start the engine, and extend and retract the
Start the engine, and extend and retract the
boom. Verify that there are no abnormal
boom. Verify that there are no abnormal
tensions on the hoses.
tensions on the hoses.