9. MAINTENANCE [How to Service the Air Compressor]
92
Load-side bearing
Grease port
Anti-Load-Side bearing
Grease port
Grease pan Bolt with knob
Grease filling amount
Model Load-Side bearing
Anti-Load Side
bearing
DSP-90A6N
DSP-90W6N
DSP-90VA6N
DSP-90VW6N
DSP-110A6N
DSP-110W6N
DSP-110VA6N
DSP-110VW6N
1.2oz
(30g)
2.5oz
(70g)
● Example of grease gun
Lever-type grease gun CH-400 Micro-Hose (pin type
SPK-1C) by Yamada Corporation.
Feed the main motor with grease in accordance with the
Grease Filling Amount table. Grease to be used is Raremax
Super by Kyodo Yushi (Hitachi part name: RMS grease)
(P/N 455).
① Open the front door. Grease the specified amount
through the grease port using a grease gun.
②
Check the grease pan, and clean the pan as necessary.
③ Close the front door.
Be cautious of replenishing grease more than the spcified amont. It may cause leaking of grease and/or
malfunction of the protective device due to overheat of the bearing. Grease at once during start-up
commissioning.
Periodically replace the main motor bearing in accordance with
“9.1 Periodical Maintenance of
Compressor” in page 74 and
“9.2 Standard Maintenance Schedule”
Maintenance Schedule A
Maintenance Schedule B
in pages 75 to 78.
CAUTION
● Contact the local HITACHI distributor/master dealer or
representative office for the grease detail.
● Greasing must be done while the main motor
operating.
● Cleaning of grease pan must be done while the air
compressor stops.
IMPORTANT
14
Main Motor Greasing