Hitachi ZAXIS 30U-5N User Manual

MAINTENANCE
7-22
Swing Bearing
--- every 250 hours
d
CAUTION: Lubricating both the swing bearing and
gear and rotating the upperstructure must be done by
one person. Before you lubricate the swing bearing,
clear the area of all persons. Lower the bucket to the
ground. Stop the engine. Pull the pilot control shut-off
lever to the LOCK position.
1. Parkthemachinefollowingthesameproceduresas
describedonpage7-6forpreparationforinspectionand
maintenance.
2. Apply grease via grease fitting (1) with a grease gun by
twotothreestrokes.
3. Starttheengine.Pushpilotcontrolshut-offlevertothe
UNLOCKposition.Raisethebucketapprox.200mm(8
in) above the ground and rotate the upperstructure 90 °
(1/4turn).
4. Lowerthebuckettotheground.
5. Repeattheprocedure(Step1to4)8times.
6. Applygreasetotheswingbearinguntilgreasecanbe
seenescapingfromtheswingbearingseals.Takecare
nottosupplyexcessivegrease.
1
MADB-07-009

Hitachi ZAXIS 30U-5N Specifications

General

Brand	Hitachi
Model	ZAXIS 30U-5N
Category	Excavators
Language	English