5-60
Maintenance and inspection procedures
5Maintenance and Inspection
(3) Oil seal section lubrication method (for only clean specification)
The clean specification use the oil seal at between the wrist housing and forearm, at the end of the wrist housing
and between the elbow block and forearm. (Oil seal: Refer to "Table 5-6：Consumable part list" on page 65) The
oil seal section lubrication method is shown below.
The grease used here will generate toxic decomposition gases at high temperatures
exceeding 280 ℃ . Do not light cigarettes with this grease on the hands.
Read the precautions enclosed with the grease before starting work.
■ Lubrication between wrist housing and forearm
Fig. 5-16 shows the procedures for Lubrication method between wrist housing and forearm. Refer to the
"5.3.2Installing/removing the cover" on page 48 and remove the necessary covers.
1) Remove the elbow cover U.
2) Make marks on the seal ring <1> and ring guide <2> with a felt-tip pen so that the position is not deviated.
3) Remove the bolts (four M2x2 bolts), and slide the seal ring <1> in the direction of the arrow.
4) Apply grease(BARRIERTA IMI/V) onto the surface that the seal ring <1> oil seal contacts using a brush, etc.
5) Apply grease onto the surface that the seal ring <1> and seal guide <2>, and tighten the bolts <3>.
6) Install the elbow cover U which removed with the above step"1)". In the case of clean specification, take care
not to damage the packing attached to the cover matching surface at this time.
This completes the lubrication between wrist housing and forearm.
Fig.5-16 ： Lubrication between wrist housing and forearm
CAUTION
CAUTION
Makeamark
(alsoonoppositesid
Elbowcover(B)
<2>Ringguide
<3>Bolt
<1>Sealring
Forearm
Applygreaseatshadedsection
Slide
(4‑M2x2)
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