# US 5,704,318 A · Method of adjusting a valve clearance

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- Number: US 5,704,318 A
- Document ID: US5704318A
- Status: Granted
- Kind: A
- Application number: 08/779,568
- Filed: 1997-01-09
- Granted: 1998-01-06
- Earliest claimed: 1995-02-20
- Assignees: Fuji Oozx Inc.
- Inventors: Akiyoshi Mori
- Web page: https://patentgrep.com/patent/US5704318A

## CPC

- F01L 1/205: {by means of shims or the like}
- F01L 1/143: {for use with overhead camshafts}
- F01L 2303/00: Manufacturing of components used in valve arrangements
- Y10T 29/49304: Valve tappet making
- Y10T 74/2107: Follower
- F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Between the end of a valve and a valve-operating cam in an internal combustion engine, a valve lifter is inserted. A filler enclosing portion is formed between a shim and the body of the valve lifter. Through an opening from an injector, a filler is introduced into the filler enclosing portion, so that valve clearance is corrected to zero. Differences in valve clearance can be easily corrected.

## Claims

### Claim 1

A method of adjusting a valve clearance in a valve operating mechanism, the method comprising the steps of:
connecting a first member having a valve contacting surface which contacts an end of a valve, with a second member which has a cam contacting surface which contacts a cam for operating the valve, to provide a volume-variable filler enclosing portion between the first and second members to form an intermediate space of a valve lifter;
providing the intermediate space between the cam and the end of the valve; and
introducing a curable filler into the filler enclosing portion to define a distance between the first and second members to a suitable one to finish the valve lifter.

### Claim 2 (depends on 1)

A method as defined in claim 1 wherein the first member is a body of the valve lifter and the second member is an engagement member.

### Claim 3 (depends on 1)

A method as defined in claim 1 wherein the first member is an engagement member and the second member is a body of the valve lifter.

### Claim 4 (depends on 2, 3)

A method as defined in claim 2 or 3 wherein the engagement member comprises a shim.

### Claim 5 (depends on 2)

A method as defined in claim 2 wherein the filler is introduced from a filler injector through an opening provided in a circumferential wall of the body of the valve lifter.

### Claim 6 (depends on 1)

A method as defined in claim 1, comprising the step of:
inserting a spacer which has a thickness equal to a suitable valve clearance, between the cam and the cam contacting surface of the second member before the filler is introduced into the filler enclosing portion.