NASA-LLIS-0015

Lessons Learned - Torque Requirements Aligned to Fitting Sizes

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T15:58:06Z
date available	2017-09-04T15:58:06Z
date copyright	07/24/1993
date issued	1993
identifier other	RBYCQCAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/61289
description abstract	Description of Driving Event: Hydraulic fluid leakage was noted at the interface of the flex hose and Rosan fitting on a hydraulic pump. The fittings were a different size at each end of the flex hose. Different size fittings require different torque values, which the specifications did not identify. The hydraulic system is inspected prior to each mission of the shuttle vehicle. Review of the procedure used during installation of the hydraulic system shows that one end of the flex hose was torqued to 120 foot pounds. The installation drawing does not specify that the other end of the flex hose has a smaller fitting that should require a lower torque. Leakage was corrected by a hose replaced and torqued properly.
language	English
title	NASA-LLIS-0015	num
title	Lessons Learned - Torque Requirements Aligned to Fitting Sizes	en
type	standard
page	2
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1993
contenttype	fulltext
subject keywords	Facilities
subject keywords	Fire Protection
subject keywords	Ground Operations
subject keywords	Hardware
subject keywords	Industrial Operations
subject keywords	Parts Materials & Processes
subject keywords	Spacecraft