A greasing device that feeds grease to a portion requiring greasing that is housed inside a housing, and includes a jig and a greasing pipe fixed to the jig. The housing includes a though-hole that extends through the housing. The jig includes an insertion part that is inserted into the through-hole of the housing. A side surface of the insertion part bear a marking-off line at a position a predetermined distance away from a leading end side of the insertion part. A positon of the marking-off line is a height position that the greasing pipe does not come into contact with inner components of the housing when the jig is inserted into the through-hole up to the positon of the marking-off line.

There is provided a guide jig including a guide jig body and an engagement portion provided on the guide jig body and configured to be engaged with an engagement partner with the guide jig body positioned with respect to the engagement partner. The guide jig body includes a guide through hole provided as a through hole extending toward a relevant portion with the engagement portion engaged with the engagement partner and configured to guide the direction of insertion of an insertion portion to be inserted into the through hole and moved toward the relevant portion. The engagement portion includes at least two projecting portions. The at least two projecting portions are disposed in line in the direction of insertion. A gap between adjacent projecting portions, among the at least two projecting portions, is set to have a length corresponding to the thickness of the engagement partner.

There is provided a guide jig including a guide jig body and an engagement portion provided on the guide jig body and configured to be engaged with an engagement partner with the guide jig body positioned with respect to the engagement partner. The guide jig body includes a guide through hole provided as a through hole extending toward a relevant portion with the engagement portion engaged with the engagement partner and configured to guide the direction of insertion of an insertion portion to be inserted into the through hole and moved toward the relevant portion. The engagement portion includes at least two projecting portions. The at least two projecting portions are disposed in line in the direction of insertion. A gap between adjacent projecting portions, among the at least two projecting portions, is set to have a length corresponding to the thickness of the engagement partner.

An ejection device includes an insertion portion that is held by an operator and inserted toward a relevant portion in a narrow space. The insertion portion includes an ejection unit that is a fluidic substance supply pipe of which distal end portion is closed. A side surface of the distal end portion of the ejection unit includes at least one fluidic substance ejection port that extends from an outer peripheral surface to an inner peripheral surface of the distal end portion and from which a fluidic substance to be supplied through the ejection unit is ejected.

An ejection device includes an insertion portion that is held by an operator and inserted toward a relevant portion in a narrow space. The insertion portion includes an ejection unit that is a fluidic substance supply pipe of which distal end portion is closed. A side surface of the distal end portion of the ejection unit includes at least one fluidic substance ejection port that extends from an outer peripheral surface to an inner peripheral surface of the distal end portion and from which a fluidic substance to be supplied through the ejection unit is ejected.

A holding member configured to hold an injection portion and an imaging unit of an insertion portion in a state in which the injection portion and the imaging unit are arranged side by side includes an injection-portion insertion portion configured such that the injection portion is press-fitted into the injection-portion insertion portion and an imaging-unit insertion portion configured such that the imaging unit is press-fitted into the imaging-unit insertion portion. The insertion portion is configured to be inserted toward a corresponding portion in a narrow space while being gripped by an operator. The injection portion has a cylindrical shape and is provided with a fluid substance injection port at a tip end portion. The imaging unit has a cylindrical shape and is configured to capture an image including the tip end portion of the injection portion and its surrounding environment.

A holding member configured to hold an injection portion and an imaging unit of an insertion portion in a state in which the injection portion and the imaging unit are arranged side by side includes an injection-portion insertion portion configured such that the injection portion is press-fitted into the injection-portion insertion portion and an imaging-unit insertion portion configured such that the imaging unit is press-fitted into the imaging-unit insertion portion. The insertion portion is configured to be inserted toward a corresponding portion in a narrow space while being gripped by an operator. The injection portion has a cylindrical shape and is provided with a fluid substance injection port at a tip end portion. The imaging unit has a cylindrical shape and is configured to capture an image including the tip end portion of the injection portion and its surrounding environment.

There is provided a guide jig including a guide jig body and an engagement portion provided on the guide jig body and configured to be engaged with an engagement partner with the guide jig body positioned with respect to the engagement partner. The guide jig body includes a guide through hole provided as a through hole extending toward a relevant portion with the engagement portion engaged with the engagement partner and configured to guide the direction of insertion of an insertion portion to be inserted into the through hole and moved toward the relevant portion. The engagement portion includes at least two projecting portions. The at least two projecting portions are disposed in line in the direction of insertion. A gap between adjacent projecting portions, among the at least two projecting portions, is set to have a length corresponding to the thickness of the engagement partner.

There is provided a guide jig including a guide jig body and an engagement portion provided on the guide jig body and configured to be engaged with an engagement partner with the guide jig body positioned with respect to the engagement partner. The guide jig body includes a guide through hole provided as a through hole extending toward a relevant portion with the engagement portion engaged with the engagement partner and configured to guide the direction of insertion of an insertion portion to be inserted into the through hole and moved toward the relevant portion. The engagement portion includes at least two projecting portions. The at least two projecting portions are disposed in line in the direction of insertion. A gap between adjacent projecting portions, among the at least two projecting portions, is set to have a length corresponding to the thickness of the engagement partner.