GROVE 8-37
CD3340B/YB4411 AXLES/DRIVE SHAFTS/WHEELS AND TIRES
Published 04/07/2015 Control # 569-00
Assembly
Steering Axle
1. If the bearings (28, Figure 8-138) were removed, press
new bearings into the pin bores of steering knuckles (9
and 10). The top of the bearings must be flush with the
top of pin bore as shown in Figure 8-139.
2. Apply petroleum jelly to thrust washers (6 and 31,
Figure 8-138) and install them on the axle beam (37).
3. Position the steering knuckle on the axle beam. By
hand, lift the steering knuckle and install shims (38 - 41)
until the steering knuckle fits tightly against the axle
beam (minimum vertical movement). Shims are
available in four sizes from 0.127 - 0.601 mm (0.005 to
0.024 in).
4. Align the hole in the axle beam (37), thrust washer (6),
shims (38 - 41) and steering knuckle (9 or 10). Install
thrust washer (31) and pin (8). When installing the pin,
be sure the machine flat for the retainer pin (5) is toward
the axle center. Install retainer pin (5). Using a soft
punch and hammer, install retainer ring (27).
5. Connect ball joint (29) to the steering knuckle with the
slotted nut. Install cotter pin (1).
6. Connect the steering cylinder (3) to the steering knuckle.
7. Repeat steps 2 through 6 for the opposite steering
knuckle (6 or 9).
8. Apply grease to grease zerks (4, 26 and 32) and grease
fitting in item 29
Axle Hub
1. Pack inner bearing cone (15, Figure 8-138) and outer
bearing cone (18) with wheel bearing grease. Install the
bearing cones into hub (24).
2. Install spacer (11) and inner oil seal retainer (12), if
removed. Install felt seal (13) on spindle against inner oil
seal retainer (12). Install outer oil seal retainer (14) on
the spindle.
3. Install the assembled hub on the spindle of the steering
knuckle.
4. Install washer (22) and slotted nut (21).
5. Rotate the hub while tightening the slotted nut (21) snug
until tight to displace grease. Then, back off nut until the
hub rotates free, usually 1/4-1/2 turn and install cotter
pin (19).
6. Install hub cap (20).
7. Repeat steps 1 through 6 for the opposite axle hub.
Installation
1. Use a wheel jack to move the steering axle into position
under the crane. Raise the axle and install the eight
mounting bolts (36, Figure 8-138) and eight self-locking
nuts (35). Tighten the bolts to 245 Nm (180 lb-ft).
2. Connect the hydraulic lines to the steering cylinders.
3. Install the wheels and lower the tires to ground.
4. Bleed air from the steering lines. See Section 8, Steering
System.
5. Check wheel alignment, page 6-7.
DRIVE SHAFTS
Checking for Bearing Wear
At each trunnion, check the drive shaft for side movement.
As wear in the bearings increases, the side movement will
increase. Movement must be at a minimum to prevent
vibration during operation
Removal
NOTE: Before removing the drive shaft mark both
companion flanges and mark the sliding joint.
Make note of which way the drive shaft is installed
between the transmission and axle. Remove the
attaching hardware and remove the drive shaft.
WARNING
Crushing Hazard!
A raised and badly supported machine can fall on you
causing severe injury or death. Position the machine on a
firm, level surface before raising one end. Ensure that the
other end is securely chocked. Do not rely solely on the
machine’s hydraulics or jacks to support the machine
when working under it.
Disconnect the battery cables while you’re under the
machine to prevent the engine from being started.
WARNING
Crushing Hazard!
A raised and badly supported machine can fall on you
causing severe injury or death. Position the machine on a
firm, level surface before raising one end. Ensure that the
other end is securely chocked. Do not rely solely on the
machine’s hydraulics or jacks to support the machine
when working under it.
Disconnect the battery cables while you’re under the
machine to prevent the engine from being started.
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