GROVE 11-23
CD3340B/YB4411 STRUCTURAL
11
Published 04/07/2015 Control # 569-00
9. Reference mark for proper assembly and remove the
drum from the mounting bracket.
10. Remove the bearing (5) and seal (4, Figure 11-33) from
the drum (10) and inspect the bearing for signs of pitting
and spalling.
Assembly
1. Thoroughly clean all parts. Replace those which show
wear.
2. After inspecting the drum for excessive wear in the gear
teeth and both the drum and mounting bracket for
structural integrity, install bearing (5, Figure 11-33) and
seal (4) into the drum. Stand the mounting bracket up on
the motor end and slide the drum into it. Make sure the
drum is installed in the same direction as it was removed
or the hoist assembly will be wrong when completed.
3. Check the snap ring (6, Figure 11-33) on output shaft (3)
to ensure it is in its groove and not bent over
(Figure 11-39). Replace if necessary.
4. Install the output shaft (Figure 11-40) into the bracket
and drum, making sure to align the shaft with the bearing
in the drum. Make sure the alignment of the fill and drain
holes is correct. Tighten the capscrews to 130 to 143 Nm
(100 to 110 lb-ft).
5. Turn the assembly over onto the output shaft side and
install the output planet set (23, Figure 11-33). Use the
same eyebolts and chain used to disassemble the unit
(Figure 11-36).
6. Put a light coating of grease on the thrust washer (8,
Figure 11-33) to keep it in place. Install it into the output
planet set and insert the output sun gear (16) into the
output planet set.
7. Install the input planet set (22, Figure 11-33) into the
drum. Make sure it fits into the output sun gear.
8. Install the input sun gear (9) and thrust washer (8) into
the input planet set. Again, coat the thrust washer with a
light coat of grease.
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