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DOUBLE CHAIN ROLLER
BEARING INSTALLATION
STEP 22
G1657MP
Remove the four nuts that secure the clevises of the
double chain assembly to the outer boom section.
Hang both chains over the front of the inner boom
section.
STEP 23
G1649MP
Loosen and remove the bolt (1) and nut (2) from the
front sheave pin.
STEP 24
G1648MP
Remove the sheave pin.
STEP 25
Remove the roller bearings.
STEP 26
G1646MP
The two roller bearings and sheave should be
assembled before installing them. Press the roller
bearing (1) into the sheave (2). Apply grease to the
inside of the roller bearing, then insert the inner ring
(3) into the roller bearing.
1
2
3
1
2