Gradall 544D (9136-4003) Service Manual - Manual (Page 330)

C HAIN R OLLER R EMOVAL/ R EINSTALLATION
1" Retract Chain Roller
Preparation
Position the handler in a safe, level, open area well away from personnel and
equipment. Apply the park brake, shift the forward/reverse lever to “Neutral” and
turn the rear wheels straight forward.
Retract booms fully, then extend 1".
Turn off the ignition, remove the keys and chock all wheels.
Removal
Fasten lifting tackle to the crowd cylinder, take the weight, remove the pin
from the rod eye end and lower the cylinder for access to the retract chains.
Remove the jam nut from the chain clevis at boom-section 1 chain adjusting block.
Back off the adjusting nut on the chain clevis fully without removing it.
At the rear of boom, pull the chain so that the slack is at the rear.
Remove the chain from the back clevis.
Remove the roller.
Reinstallation Hook-Up
Install the roller.
Install the chain on the back clevis.
At the front of the boom, pull the slack from the chain.
Tighten the adjusting nut.
Install and torque the jam nut at the chain clevis.
Readjust the chain per instructions in Section 4.
R EAR, B OOM- S ECTION 3
9.3
9C
Note!
The function of the chain rollers is
to control the path of the chain
loop as the booms extend and
retract. The chain contacts the
surface of the outside diameter of
the roller and is held in place by
the roller lips.
F RONT, B OOM- S ECTION 1
F ORM N O. 29702
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544C/544D B OOM M AINTENANCE
1.
2.
3.
1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
5.
6.
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