Harrington Hoists and Cranes (N)ER Hoist - ((N)ER2) - Manual (Page 13)

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3.0 Preoperational Procedures
3.1 Gearbox
3.1.1 The gearbox is filled with the correct amount of oil at the time of shipment. The oil level must be verified
prior to operation. The ER2 and NER2 hoists have different checking procedures. Refer to Section 6.3
for specific checking procedures.
3.1.2 Refer to Section 6.3 when replacing the gear oil.
3.1.3 All ER2, mechanical load brake equipped hoists, are shipped with a separate air vented oil cap. This
vented oil cap must be installed prior to use. To install, remove an existing oil plug and replace with the
vented oil cap (refer to Figure 3-1).
3.1.4 There are two oil fill holes located in the top of the gear case on the ER2 hoist. For ER2 coupled to
MR2 trolley, there are some flange widths that make it necessary to relocate the oil cap assembly to the
other oil fill hole. This will prevent interference with trolley side plate. Refer to Figure 3-1.
Figure 3-1 Vented Oil Cap Installation